{"transactions":[{"id":763181,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44095,"kind":"person","name":"Hadfield Chris","position":1,"cik":"0001837938","reported_name":"Hadfield Chris","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-05-26T18:54:53.000Z","date":"2026-05-21","kind":"purchase","planned":false,"acquired":true,"shares":2000,"price":7.19,"value":14380.0,"ownership":{"direct":false,"nature":"Hadfield Inc."},"balance_after":3500,"source":{"system":"sec-edgar","filing":"0001837938-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000183793826000004/primary_doc.xml","form_type":"4"}},{"id":765268,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44589,"kind":"person","name":"Kabot Brian","position":1,"cik":"0001786113","reported_name":"Kabot Brian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-05-22T18:55:51.000Z","date":"2026-05-20","kind":"purchase","planned":false,"acquired":true,"shares":250,"price":5.515,"value":1378.75,"ownership":{"direct":true},"balance_after":4708,"source":{"system":"sec-edgar","filing":"0001786113-26-000005","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178611326000005/primary_doc.xml","form_type":"4"}},{"id":767342,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Restricted Stock Units","published_at":"2026-05-21T23:30:29.000Z","date":"2026-05-19","kind":"grant","planned":false,"acquired":true,"shares":10635,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":16609,"derivative":{"underlying":"Class A Common Stock","underlying_shares":10635},"source":{"system":"sec-edgar","filing":"0001905262-26-000003","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000190526226000003/primary_doc.xml","form_type":"4"}},{"id":767341,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Class A Common Stock","published_at":"2026-05-21T23:30:29.000Z","date":"2026-05-19","kind":"grant","planned":false,"acquired":true,"shares":6457,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":6476,"source":{"system":"sec-edgar","filing":"0001905262-26-000003","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000190526226000003/primary_doc.xml","form_type":"4"}},{"id":768262,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45301,"kind":"person","name":"Ensler Lon","position":1,"cik":"0002018153","reported_name":"Ensler Lon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Stock Units","published_at":"2026-05-21T23:24:11.000Z","date":"2026-05-19","kind":"grant","planned":false,"acquired":true,"shares":15107,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unite (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":23593,"derivative":{"underlying":"Class A Common Stock","underlying_shares":15107},"source":{"system":"sec-edgar","filing":"0002018153-26-000003","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2018153/000201815326000003/primary_doc.xml","form_type":"4"}},{"id":768261,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45301,"kind":"person","name":"Ensler Lon","position":1,"cik":"0002018153","reported_name":"Ensler Lon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Class A Common Stock","published_at":"2026-05-21T23:24:11.000Z","date":"2026-05-19","kind":"grant","planned":false,"acquired":true,"shares":5405,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":5405,"source":{"system":"sec-edgar","filing":"0002018153-26-000003","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2018153/000201815326000003/primary_doc.xml","form_type":"4"}},{"id":767344,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-05-21T23:17:40.000Z","date":"2026-05-19","kind":"grant","planned":false,"acquired":true,"shares":40485,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":63299,"derivative":{"underlying":"Class A Common Stock","underlying_shares":40485},"source":{"system":"sec-edgar","filing":"0001873855-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000187385526000004/primary_doc.xml","form_type":"4"}},{"id":767343,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-05-21T23:17:40.000Z","date":"2026-05-19","kind":"grant","planned":false,"acquired":true,"shares":55350,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":55474,"source":{"system":"sec-edgar","filing":"0001873855-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000187385526000004/primary_doc.xml","form_type":"4"}},{"id":767340,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45095,"kind":"person","name":"Layman Jon","position":1,"cik":"0001857583","reported_name":"Layman Jon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer"}}],"security":"Restricted Stock Units","published_at":"2026-05-21T23:10:14.000Z","date":"2026-05-19","kind":"grant","planned":false,"acquired":true,"shares":15107,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"shares","element":"transactionShares","label":"F3","text":"This first amendment to the Form 4 filed by the Reporting Person on 05/21/2026 indicates a correction to the amount of derivative securities acquired."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":23593,"derivative":{"underlying":"Class A Common Stock","underlying_shares":15107},"source":{"system":"sec-edgar","filing":"0001857583-26-000005","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000185758326000005/primary_doc.xml","form_type":"4/A","original_submission_date":"2026-05-21"}},{"id":767339,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45095,"kind":"person","name":"Layman Jon","position":1,"cik":"0001857583","reported_name":"Layman Jon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer"}}],"security":"Class A Common Stock","published_at":"2026-05-21T23:10:14.000Z","date":"2026-05-19","kind":"grant","planned":false,"acquired":true,"shares":14270,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This first amendment to the Form 4 filed by the Reporting Person on 05/21/2026 indicates a correction to the amount of securities acquired."}],"balance_after":14270,"source":{"system":"sec-edgar","filing":"0001857583-26-000005","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000185758326000005/primary_doc.xml","form_type":"4/A","original_submission_date":"2026-05-21"}},{"id":767335,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45095,"kind":"person","name":"Layman Jon","position":1,"cik":"0001857583","reported_name":"Layman Jon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer"}}],"security":"Restricted Stock Units","published_at":"2026-05-21T22:55:11.000Z","date":"2026-05-19","kind":"grant","planned":false,"acquired":true,"shares":10635,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents a grant of RSUs, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":16609,"derivative":{"underlying":"Class A Common Stock","underlying_shares":10635},"source":{"system":"sec-edgar","filing":"0001857583-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000185758326000004/primary_doc.xml","form_type":"4"}},{"id":767334,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45095,"kind":"person","name":"Layman Jon","position":1,"cik":"0001857583","reported_name":"Layman Jon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer"}}],"security":"Class A Common Stock","published_at":"2026-05-21T22:55:11.000Z","date":"2026-05-19","kind":"grant","planned":false,"acquired":true,"shares":6457,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":6476,"source":{"system":"sec-edgar","filing":"0001857583-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000185758326000004/primary_doc.xml","form_type":"4"}},{"id":769414,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44589,"kind":"person","name":"Kabot Brian","position":1,"cik":"0001786113","reported_name":"Kabot Brian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-21T00:34:05.000Z","date":"2026-05-18","kind":"grant","planned":false,"acquired":true,"shares":6039,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":6039,"derivative":{"underlying":"Class A Common Stock","underlying_shares":6039},"source":{"system":"sec-edgar","filing":"0001786113-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178611326000004/primary_doc.xml","form_type":"4"}},{"id":769413,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44589,"kind":"person","name":"Kabot Brian","position":1,"cik":"0001786113","reported_name":"Kabot Brian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-05-21T00:34:05.000Z","date":"2026-05-19","kind":"purchase","planned":false,"acquired":true,"shares":250,"price":5.615,"value":1403.75,"ownership":{"direct":true},"balance_after":4458,"source":{"system":"sec-edgar","filing":"0001786113-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178611326000004/primary_doc.xml","form_type":"4"}},{"id":769412,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44589,"kind":"person","name":"Kabot Brian","position":1,"cik":"0001786113","reported_name":"Kabot Brian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-05-21T00:34:05.000Z","date":"2026-05-18","kind":"exercise","planned":false,"acquired":true,"shares":913,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":4208,"source":{"system":"sec-edgar","filing":"0001786113-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178611326000004/primary_doc.xml","form_type":"4"}},{"id":769411,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":32036,"kind":"person","name":"Reed Kimberly A.","position":1,"cik":"0001873931","reported_name":"Reed Kimberly A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-21T00:27:36.000Z","date":"2026-05-18","kind":"grant","planned":false,"acquired":true,"shares":6039,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":6039,"derivative":{"underlying":"Class A Common Stock","underlying_shares":6039},"source":{"system":"sec-edgar","filing":"0001873931-26-000002","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000187393126000002/primary_doc.xml","form_type":"4"}},{"id":769410,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":32036,"kind":"person","name":"Reed Kimberly A.","position":1,"cik":"0001873931","reported_name":"Reed Kimberly A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-05-21T00:27:36.000Z","date":"2026-05-18","kind":"exercise","planned":false,"acquired":true,"shares":913,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":2115,"source":{"system":"sec-edgar","filing":"0001873931-26-000002","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000187393126000002/primary_doc.xml","form_type":"4"}},{"id":769409,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45572,"kind":"person","name":"Mercado Victorino","position":1,"cik":"0001873859","reported_name":"Mercado Victorino","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-21T00:21:24.000Z","date":"2026-05-18","kind":"grant","planned":false,"acquired":true,"shares":6039,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":6039,"derivative":{"underlying":"Class A Common Stock","underlying_shares":6039},"source":{"system":"sec-edgar","filing":"0001873859-26-000002","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000187385926000002/primary_doc.xml","form_type":"4"}},{"id":769408,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45572,"kind":"person","name":"Mercado Victorino","position":1,"cik":"0001873859","reported_name":"Mercado Victorino","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-05-21T00:21:24.000Z","date":"2026-05-18","kind":"exercise","planned":false,"acquired":true,"shares":913,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":2077,"source":{"system":"sec-edgar","filing":"0001873859-26-000002","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000187385926000002/primary_doc.xml","form_type":"4"}},{"id":769405,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45571,"kind":"person","name":"Reiners Linda J.","position":1,"cik":"0001873933","reported_name":"Reiners Linda J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-21T00:15:35.000Z","date":"2026-05-18","kind":"grant","planned":false,"acquired":true,"shares":6039,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unite (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":6039,"derivative":{"underlying":"Class A Common Stock","underlying_shares":6039},"source":{"system":"sec-edgar","filing":"0001873933-26-000002","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000187393326000002/primary_doc.xml","form_type":"4"}},{"id":769404,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45571,"kind":"person","name":"Reiners Linda J.","position":1,"cik":"0001873933","reported_name":"Reiners Linda J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-05-21T00:15:35.000Z","date":"2026-05-18","kind":"exercise","planned":false,"acquired":true,"shares":913,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":2115,"source":{"system":"sec-edgar","filing":"0001873933-26-000002","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000187393326000002/primary_doc.xml","form_type":"4"}},{"id":770190,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45704,"kind":"person","name":"Kugler Mitchel B.","position":1,"cik":"0001877834","reported_name":"Kugler Mitchel B.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-21T00:07:29.000Z","date":"2026-05-18","kind":"grant","planned":false,"acquired":true,"shares":6039,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":6039,"derivative":{"underlying":"Class A Common Stock","underlying_shares":6039},"source":{"system":"sec-edgar","filing":"0001877834-26-000002","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1877834/000187783426000002/primary_doc.xml","form_type":"4"}},{"id":769407,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44095,"kind":"person","name":"Hadfield Chris","position":1,"cik":"0001837938","reported_name":"Hadfield Chris","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-20T23:59:45.000Z","date":"2026-05-18","kind":"grant","planned":false,"acquired":true,"shares":6039,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of May 18, 2027 or the day of the 2027 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":6039,"derivative":{"underlying":"Class A Common Stock","underlying_shares":6039},"source":{"system":"sec-edgar","filing":"0001837938-26-000003","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000183793826000003/primary_doc.xml","form_type":"4"}},{"id":769406,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44095,"kind":"person","name":"Hadfield Chris","position":1,"cik":"0001837938","reported_name":"Hadfield Chris","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-05-20T23:59:45.000Z","date":"2026-05-18","kind":"exercise","planned":false,"acquired":true,"shares":913,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1884,"source":{"system":"sec-edgar","filing":"0001837938-26-000003","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000183793826000003/primary_doc.xml","form_type":"4"}},{"id":769402,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44589,"kind":"person","name":"Kabot Brian","position":1,"cik":"0001786113","reported_name":"Kabot Brian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-05-20T14:12:52.000Z","date":"2026-05-15","kind":"purchase","planned":false,"acquired":true,"shares":1850,"price":5.4046,"value":9998.51,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This transaction was executed in multiple trades at prices ranging from $5.275 to $5.6099. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reporting person was previously reported as a beneficial owner of securities held by SRC-NI Holdings, LLC. The number of shares reported in Column 5 as direct ownership is greater than previously reported due to a distribution of shares by SRC-NI Holdings, LLC to its investors."}],"balance_after":3295,"source":{"system":"sec-edgar","filing":"0001786113-26-000002","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178611326000002/primary_doc.xml","form_type":"4"}},{"id":774267,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44095,"kind":"person","name":"Hadfield Chris","position":1,"cik":"0001837938","reported_name":"Hadfield Chris","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-05-18T22:05:03.000Z","date":"2026-05-15","kind":"purchase","planned":false,"acquired":true,"shares":1500,"price":5.32,"value":7980.0,"ownership":{"direct":false,"nature":"Hadfield Inc."},"balance_after":1500,"source":{"system":"sec-edgar","filing":"0001837938-26-000001","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000183793826000001/primary_doc.xml","form_type":"4"}},{"id":864771,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-03T23:58:28.000Z","date":"2026-02-27","kind":"grant","planned":false,"acquired":true,"shares":5974,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":5974,"derivative":{"underlying":"Class A Common Stock","underlying_shares":5974},"source":{"system":"sec-edgar","filing":"0001905262-26-000001","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000190526226000001/primary_doc.xml","form_type":"4"}},{"id":864770,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45095,"kind":"person","name":"Layman Jon","position":1,"cik":"0001857583","reported_name":"Layman Jon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-03T23:52:10.000Z","date":"2026-02-27","kind":"grant","planned":false,"acquired":true,"shares":8486,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":8486,"derivative":{"underlying":"Class A Common Stock","underlying_shares":8486},"source":{"system":"sec-edgar","filing":"0001857583-26-000002","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000185758326000002/primary_doc.xml","form_type":"4"}},{"id":868682,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45301,"kind":"person","name":"Ensler Lon","position":1,"cik":"0002018153","reported_name":"Ensler Lon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-03T23:41:33.000Z","date":"2026-02-27","kind":"grant","planned":false,"acquired":true,"shares":8486,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":8486,"derivative":{"underlying":"Class A Common Stock","underlying_shares":8486},"source":{"system":"sec-edgar","filing":"0002018153-26-000001","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2018153/000201815326000001/primary_doc.xml","form_type":"4"}},{"id":868681,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45301,"kind":"person","name":"Ensler Lon","position":1,"cik":"0002018153","reported_name":"Ensler Lon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-03T23:41:33.000Z","date":"2026-02-27","kind":"grant","planned":false,"acquired":true,"shares":3606,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in four equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in four equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":3606,"derivative":{"underlying":"Class A Common Stock","underlying_shares":3606},"source":{"system":"sec-edgar","filing":"0002018153-26-000001","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2018153/000201815326000001/primary_doc.xml","form_type":"4"}},{"id":864769,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-03T23:28:15.000Z","date":"2026-02-27","kind":"grant","planned":false,"acquired":true,"shares":22744,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Momentus Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":22744,"derivative":{"underlying":"Class A Common Stock","underlying_shares":22744},"source":{"system":"sec-edgar","filing":"0001873855-26-000002","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000187385526000002/primary_doc.xml","form_type":"4"}},{"id":1044168,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45301,"kind":"person","name":"Ensler Lon","position":1,"cik":"0002018153","reported_name":"Ensler Lon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Restricted Stock Units","published_at":"2025-09-10T20:08:05.000Z","date":"2025-08-01","kind":"grant","planned":false,"acquired":true,"shares":95000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"deemedExecutionDate","element":"deemedExecutionDate","label":"F2","text":"This transaction is being reported late due to an administrative error."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents a grant of Restricted Stock Units, which vest in four equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents a grant of Restricted Stock Units, which vest in four equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents a grant of Restricted Stock Units, which vest in four equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":95000,"derivative":{"underlying":"Class A Common Stock","underlying_shares":95000},"source":{"system":"sec-edgar","filing":"0002018153-25-000005","document":"wk-form4_1757534881.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2018153/000201815325000005/wk-form4_1757534881.xml","form_type":"4"}},{"id":1057461,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-08-22T20:03:17.000Z","date":"2025-08-20","kind":"exercise","planned":false,"acquired":false,"shares":327,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSU Award will vest 6.25% of the total number of RSUs on November 20, 2021. 18.75% of the total number of RSUs will vest upon the first anniversary starting on August 20, 2022 and as to 25% of the total number of RSUs on each of the second, third and fourth anniversaries, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSU Award will vest 6.25% of the total number of RSUs on November 20, 2021. 18.75% of the total number of RSUs will vest upon the first anniversary starting on August 20, 2022 and as to 25% of the total number of RSUs on each of the second, third and fourth anniversaries, subject to Executive's continued Employment through each such vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":327},"source":{"system":"sec-edgar","filing":"0001781162-25-000031","document":"wk-form4_1755892993.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000031/wk-form4_1755892993.xml","form_type":"4"}},{"id":1057460,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-08-22T20:03:17.000Z","date":"2025-08-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":116,"price":1.28,"value":148.48,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units."}],"balance_after":2212,"source":{"system":"sec-edgar","filing":"0001781162-25-000031","document":"wk-form4_1755892993.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000031/wk-form4_1755892993.xml","form_type":"4"}},{"id":1057459,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-08-22T20:03:17.000Z","date":"2025-08-20","kind":"exercise","planned":false,"acquired":true,"shares":327,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":2328,"source":{"system":"sec-edgar","filing":"0001781162-25-000031","document":"wk-form4_1755892993.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000031/wk-form4_1755892993.xml","form_type":"4"}},{"id":1091760,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44095,"kind":"person","name":"Hadfield Chris","position":1,"cik":"0001837938","reported_name":"Hadfield Chris","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-07-03T21:42:09.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":16294,"derivative":{"underlying":"Class A Common Stock","underlying_shares":16294},"source":{"system":"sec-edgar","filing":"0001781162-25-000028","document":"wk-form4_1751578923.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000028/wk-form4_1751578923.xml","form_type":"4"}},{"id":1091759,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44095,"kind":"person","name":"Hadfield Chris","position":1,"cik":"0001837938","reported_name":"Hadfield Chris","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2025-07-03T21:42:09.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":17317,"source":{"system":"sec-edgar","filing":"0001781162-25-000028","document":"wk-form4_1751578923.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000028/wk-form4_1751578923.xml","form_type":"4"}},{"id":1092736,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45704,"kind":"person","name":"Kugler Mitchel B.","position":1,"cik":"0001877834","reported_name":"Kugler Mitchel B.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Restricted Stock Units","published_at":"2025-07-03T21:41:37.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"The Reporting Person elected to defer receipt of 16,294 shares of Class A Common Stock granted to the Reporting Person. Each share of Deferred RSUs is the economic equivalent of one share of MNTS Class A Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The Reporting Person elected to defer receipt of 16,294 shares of Class A Common Stock granted to the Reporting Person. Each share of Deferred RSUs is the economic equivalent of one share of MNTS Class A Common Stock."}],"balance_after":16294,"derivative":{"exercise_date":"2030-06-30","expiration_date":"2030-06-30","underlying":"Class A Common Stock","underlying_shares":16294},"source":{"system":"sec-edgar","filing":"0001781162-25-000027","document":"wk-form4_1751578891.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1877834/000178116225000027/wk-form4_1751578891.xml","form_type":"4"}},{"id":1092735,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45704,"kind":"person","name":"Kugler Mitchel B.","position":1,"cik":"0001877834","reported_name":"Kugler Mitchel B.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-07-03T21:41:37.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":16294,"derivative":{"underlying":"Class A Common Stock","underlying_shares":16294},"source":{"system":"sec-edgar","filing":"0001781162-25-000027","document":"wk-form4_1751578891.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1877834/000178116225000027/wk-form4_1751578891.xml","form_type":"4"}},{"id":1091758,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45572,"kind":"person","name":"Mercado Victorino","position":1,"cik":"0001873859","reported_name":"Mercado Victorino","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-07-03T21:40:53.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":16294,"derivative":{"underlying":"Class A Common Stock","underlying_shares":16294},"source":{"system":"sec-edgar","filing":"0001781162-25-000026","document":"wk-form4_1751578846.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000026/wk-form4_1751578846.xml","form_type":"4"}},{"id":1091757,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45572,"kind":"person","name":"Mercado Victorino","position":1,"cik":"0001873859","reported_name":"Mercado Victorino","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2025-07-03T21:40:53.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":20777,"source":{"system":"sec-edgar","filing":"0001781162-25-000026","document":"wk-form4_1751578846.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000026/wk-form4_1751578846.xml","form_type":"4"}},{"id":1091754,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":32036,"kind":"person","name":"Reed Kimberly A.","position":1,"cik":"0001873931","reported_name":"Reed Kimberly A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-07-03T21:39:59.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":16294,"derivative":{"underlying":"Class A Common Stock","underlying_shares":16294},"source":{"system":"sec-edgar","filing":"0001781162-25-000025","document":"wk-form4_1751578793.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000025/wk-form4_1751578793.xml","form_type":"4"}},{"id":1091753,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":32036,"kind":"person","name":"Reed Kimberly A.","position":1,"cik":"0001873931","reported_name":"Reed Kimberly A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2025-07-03T21:39:59.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":21441,"source":{"system":"sec-edgar","filing":"0001781162-25-000025","document":"wk-form4_1751578793.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000025/wk-form4_1751578793.xml","form_type":"4"}},{"id":1091756,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45571,"kind":"person","name":"Reiners Linda J.","position":1,"cik":"0001873933","reported_name":"Reiners Linda J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-07-03T21:39:02.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":16294,"derivative":{"underlying":"Class A Common Stock","underlying_shares":16294},"source":{"system":"sec-edgar","filing":"0001781162-25-000024","document":"wk-form4_1751578736.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000024/wk-form4_1751578736.xml","form_type":"4"}},{"id":1091755,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45571,"kind":"person","name":"Reiners Linda J.","position":1,"cik":"0001873933","reported_name":"Reiners Linda J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2025-07-03T21:39:02.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":21441,"source":{"system":"sec-edgar","filing":"0001781162-25-000024","document":"wk-form4_1751578736.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000024/wk-form4_1751578736.xml","form_type":"4"}},{"id":1091752,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44589,"kind":"person","name":"Kabot Brian","position":1,"cik":"0001786113","reported_name":"Kabot Brian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-07-03T21:38:19.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSUs will vest in full on the earlier to occur of June 30, 2026 or the day before the 2026 Annual Meeting, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":16294,"derivative":{"underlying":"Class A Common Stock","underlying_shares":16294},"source":{"system":"sec-edgar","filing":"0001781162-25-000023","document":"wk-form4_1751578692.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000023/wk-form4_1751578692.xml","form_type":"4"}},{"id":1091751,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44589,"kind":"person","name":"Kabot Brian","position":1,"cik":"0001786113","reported_name":"Kabot Brian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2025-07-03T21:38:19.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":16294,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":22698,"source":{"system":"sec-edgar","filing":"0001781162-25-000023","document":"wk-form4_1751578692.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000023/wk-form4_1751578692.xml","form_type":"4"}},{"id":1091750,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Restricted Stock Units","published_at":"2025-07-03T21:37:36.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":44809,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":44809,"derivative":{"underlying":"Class A Common Stock","underlying_shares":44809},"source":{"system":"sec-edgar","filing":"0001781162-25-000022","document":"wk-form4_1751578650.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000022/wk-form4_1751578650.xml","form_type":"4"}},{"id":1091749,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-07-03T21:36:59.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":170580,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in three equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":170580,"derivative":{"underlying":"Class A Common Stock","underlying_shares":170580},"source":{"system":"sec-edgar","filing":"0001781162-25-000021","document":"wk-form4_1751578612.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000021/wk-form4_1751578612.xml","form_type":"4"}},{"id":1091748,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45095,"kind":"person","name":"Layman Jon","position":1,"cik":"0001857583","reported_name":"Layman Jon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer"}}],"security":"Restricted Stock Units","published_at":"2025-07-03T21:35:10.000Z","date":"2025-04-22","kind":"grant","planned":false,"acquired":true,"shares":127298,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in four equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents a grant of Restricted Stock Units, which vest in four equal annual installments from Vesting Commencement Date, subject to Executive's continued Employment through each such vesting date."}],"balance_after":127298,"derivative":{"underlying":"Class A Common Stock","underlying_shares":127298},"source":{"system":"sec-edgar","filing":"0001781162-25-000019","document":"wk-form4_1751578504.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000019/wk-form4_1751578504.xml","form_type":"4"}},{"id":1190454,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Restricted Stock Units","published_at":"2025-03-27T01:05:48.000Z","date":"2025-03-20","kind":"exercise","planned":false,"acquired":false,"shares":157,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2024, subject to the Reporting Person's continued Employment through each such vesting date date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2024, subject to the Reporting Person's continued Employment through each such vesting date date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":157,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":157},"source":{"system":"sec-edgar","filing":"0001781162-25-000005","document":"wk-form4_1743037541.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000005/wk-form4_1743037541.xml","form_type":"4"}},{"id":1190453,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Restricted Stock Units","published_at":"2025-03-27T01:05:48.000Z","date":"2025-03-20","kind":"exercise","planned":false,"acquired":false,"shares":80,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2023, subject to the Reporting Person's continued Employment through each such vesting date date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2023, subject to the Reporting Person's continued Employment through each such vesting date date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":0,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":80},"source":{"system":"sec-edgar","filing":"0001781162-25-000005","document":"wk-form4_1743037541.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000005/wk-form4_1743037541.xml","form_type":"4"}},{"id":1190452,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-27T01:05:48.000Z","date":"2025-03-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":65,"price":1.93,"value":125.45,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":331,"source":{"system":"sec-edgar","filing":"0001781162-25-000005","document":"wk-form4_1743037541.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000005/wk-form4_1743037541.xml","form_type":"4"}},{"id":1190451,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-27T01:05:48.000Z","date":"2025-03-20","kind":"exercise","planned":false,"acquired":true,"shares":157,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":396,"source":{"system":"sec-edgar","filing":"0001781162-25-000005","document":"wk-form4_1743037541.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000005/wk-form4_1743037541.xml","form_type":"4"}},{"id":1190450,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-27T01:05:48.000Z","date":"2025-03-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":33,"price":1.93,"value":63.69,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":239,"source":{"system":"sec-edgar","filing":"0001781162-25-000005","document":"wk-form4_1743037541.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000005/wk-form4_1743037541.xml","form_type":"4"}},{"id":1190449,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-27T01:05:48.000Z","date":"2025-03-20","kind":"exercise","planned":false,"acquired":true,"shares":80,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":272,"source":{"system":"sec-edgar","filing":"0001781162-25-000005","document":"wk-form4_1743037541.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000005/wk-form4_1743037541.xml","form_type":"4"}},{"id":1190446,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-03-27T01:04:09.000Z","date":"2025-03-20","kind":"exercise","planned":false,"acquired":false,"shares":600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2024, subject to the Reporting Person's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2024, subject to the Reporting Person's continued Employment through each such vesting date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":600,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":600},"source":{"system":"sec-edgar","filing":"0001781162-25-000003","document":"wk-form4_1743037443.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000003/wk-form4_1743037443.xml","form_type":"4"}},{"id":1190445,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-03-27T01:04:09.000Z","date":"2025-03-20","kind":"exercise","planned":false,"acquired":false,"shares":318,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2023, subject to the Reporting Person's continued Employment through each such vesting date date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2023, subject to the Reporting Person's continued Employment through each such vesting date date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":0,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":318},"source":{"system":"sec-edgar","filing":"0001781162-25-000003","document":"wk-form4_1743037443.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000003/wk-form4_1743037443.xml","form_type":"4"}},{"id":1190444,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-27T01:04:09.000Z","date":"2025-03-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":213,"price":1.93,"value":411.09,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":2001,"source":{"system":"sec-edgar","filing":"0001781162-25-000003","document":"wk-form4_1743037443.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000003/wk-form4_1743037443.xml","form_type":"4"}},{"id":1190443,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-27T01:04:09.000Z","date":"2025-03-20","kind":"exercise","planned":false,"acquired":true,"shares":600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":2214,"source":{"system":"sec-edgar","filing":"0001781162-25-000003","document":"wk-form4_1743037443.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000003/wk-form4_1743037443.xml","form_type":"4"}},{"id":1190442,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-27T01:04:09.000Z","date":"2025-03-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":113,"price":1.93,"value":218.09,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":1614,"source":{"system":"sec-edgar","filing":"0001781162-25-000003","document":"wk-form4_1743037443.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000003/wk-form4_1743037443.xml","form_type":"4"}},{"id":1190441,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-27T01:04:09.000Z","date":"2025-03-20","kind":"exercise","planned":false,"acquired":true,"shares":318,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-14 reverse stock split that was effected by Momentus Inc. on December 5, 2024."}],"balance_after":1727,"source":{"system":"sec-edgar","filing":"0001781162-25-000003","document":"wk-form4_1743037443.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116225000003/wk-form4_1743037443.xml","form_type":"4"}},{"id":1354654,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":85738,"kind":"person","name":"Ney Paul","position":1,"cik":"0001885907","reported_name":"Ney Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer & Corp.Sec"}}],"security":"Restricted Stock Units","published_at":"2024-11-22T16:21:52.000Z","date":"2024-11-20","kind":"exercise","planned":false,"acquired":false,"shares":1375,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSU Award will vest in four equal annual installments starting on November 20, 2022, subject to the Reporting Person's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSU Award will vest in four equal annual installments starting on November 20, 2022, subject to the Reporting Person's continued Employment through each such vesting date."}],"balance_after":1375,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":1375},"source":{"system":"sec-edgar","filing":"0001781162-24-000024","document":"wk-form4_1732310506.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1885907/000178116224000024/wk-form4_1732310506.xml","form_type":"4"}},{"id":1354653,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":85738,"kind":"person","name":"Ney Paul","position":1,"cik":"0001885907","reported_name":"Ney Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer & Corp.Sec"}}],"security":"Class A Common Stock","published_at":"2024-11-22T16:21:52.000Z","date":"2024-11-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":335,"price":0.5647,"value":189.1745,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units."}],"balance_after":5050,"source":{"system":"sec-edgar","filing":"0001781162-24-000024","document":"wk-form4_1732310506.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1885907/000178116224000024/wk-form4_1732310506.xml","form_type":"4"}},{"id":1354652,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":85738,"kind":"person","name":"Ney Paul","position":1,"cik":"0001885907","reported_name":"Ney Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer & Corp.Sec"}}],"security":"Class A Common Stock","published_at":"2024-11-22T16:21:52.000Z","date":"2024-11-20","kind":"exercise","planned":false,"acquired":true,"shares":1375,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":5385,"source":{"system":"sec-edgar","filing":"0001781162-24-000024","document":"wk-form4_1732310506.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1885907/000178116224000024/wk-form4_1732310506.xml","form_type":"4"}},{"id":1374946,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44589,"kind":"person","name":"Kabot Brian","position":1,"cik":"0001786113","reported_name":"Kabot Brian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2024-11-05T23:45:07.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":false,"shares":2400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RSUs vested in full on May 29, 2024, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The RSUs vested in full on May 29, 2024, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":2400},"source":{"system":"sec-edgar","filing":"0001781162-24-000019","document":"wk-form4_1730850301.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000019/wk-form4_1730850301.xml","form_type":"4"}},{"id":1374945,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44589,"kind":"person","name":"Kabot Brian","position":1,"cik":"0001786113","reported_name":"Kabot Brian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2024-11-05T23:45:07.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":false,"shares":222,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSUs vested in three equal annual installments on the first, second and third anniversaries of August 12, 2021, subject to the Reporting Person's continued service as a member of the Board of Directors through each vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSUs vested in three equal annual installments on the first, second and third anniversaries of August 12, 2021, subject to the Reporting Person's continued service as a member of the Board of Directors through each vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":222},"source":{"system":"sec-edgar","filing":"0001781162-24-000019","document":"wk-form4_1730850301.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000019/wk-form4_1730850301.xml","form_type":"4"}},{"id":1374944,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44589,"kind":"person","name":"Kabot Brian","position":1,"cik":"0001786113","reported_name":"Kabot Brian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2024-11-05T23:45:07.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":true,"shares":2400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":6404,"source":{"system":"sec-edgar","filing":"0001781162-24-000019","document":"wk-form4_1730850301.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000019/wk-form4_1730850301.xml","form_type":"4"}},{"id":1374943,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44589,"kind":"person","name":"Kabot Brian","position":1,"cik":"0001786113","reported_name":"Kabot Brian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2024-11-05T23:45:07.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":true,"shares":222,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":4004,"source":{"system":"sec-edgar","filing":"0001781162-24-000019","document":"wk-form4_1730850301.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000019/wk-form4_1730850301.xml","form_type":"4"}},{"id":1374942,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-11-05T23:30:32.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":false,"shares":4583,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSU Award will vest 6.25% of the total number of RSUs on November 20, 2021. 18.75% of the total number of RSUs will vest upon the first anniversary starting on August 20, 2022 and as to 25% of the\ntotal number of RSUs on each of the second, third and fourth anniversaries, subject to Executive's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSU Award will vest 6.25% of the total number of RSUs on November 20, 2021. 18.75% of the total number of RSUs will vest upon the first anniversary starting on August 20, 2022 and as to 25% of the\ntotal number of RSUs on each of the second, third and fourth anniversaries, subject to Executive's continued Employment through each such vesting date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":4584,"derivative":{"underlying":"Class A Common Stock","underlying_shares":4583},"source":{"system":"sec-edgar","filing":"0001781162-24-000018","document":"wk-form4_1730849425.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000018/wk-form4_1730849425.xml","form_type":"4"}},{"id":1374941,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-11-05T23:30:32.000Z","date":"2024-11-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":1380,"price":0.5668,"value":782.184,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":19724,"source":{"system":"sec-edgar","filing":"0001781162-24-000018","document":"wk-form4_1730849425.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000018/wk-form4_1730849425.xml","form_type":"4"}},{"id":1374940,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-11-05T23:30:32.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":true,"shares":4583,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":21104,"source":{"system":"sec-edgar","filing":"0001781162-24-000018","document":"wk-form4_1730849425.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000018/wk-form4_1730849425.xml","form_type":"4"}},{"id":1374939,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44095,"kind":"person","name":"Hadfield Chris","position":1,"cik":"0001837938","reported_name":"Hadfield Chris","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2024-11-05T23:27:00.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":false,"shares":222,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSUs vested in full on May 29, 2024, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSUs vested in full on May 29, 2024, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":222},"source":{"system":"sec-edgar","filing":"0001781162-24-000016","document":"wk-form4_1730849214.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000016/wk-form4_1730849214.xml","form_type":"4"}},{"id":1374938,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":44095,"kind":"person","name":"Hadfield Chris","position":1,"cik":"0001837938","reported_name":"Hadfield Chris","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2024-11-05T23:27:00.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":true,"shares":222,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":1023,"source":{"system":"sec-edgar","filing":"0001781162-24-000016","document":"wk-form4_1730849214.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000016/wk-form4_1730849214.xml","form_type":"4"}},{"id":1374937,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45572,"kind":"person","name":"Mercado Victorino","position":1,"cik":"0001873859","reported_name":"Mercado Victorino","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2024-11-05T23:25:54.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":false,"shares":2400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSUs vested in full on May 29, 2024, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSUs vested in full on May 29, 2024, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":2400},"source":{"system":"sec-edgar","filing":"0001781162-24-000015","document":"wk-form4_1730849146.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000015/wk-form4_1730849146.xml","form_type":"4"}},{"id":1374936,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45572,"kind":"person","name":"Mercado Victorino","position":1,"cik":"0001873859","reported_name":"Mercado Victorino","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2024-11-05T23:25:54.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":false,"shares":222,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSUs vested in three equal annual installments on the first, second and third anniversaries of August 12, 2021, subject to the Reporting Person's continued service as a member of the Board of Directors through each vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSUs vested in three equal annual installments on the first, second and third anniversaries of August 12, 2021, subject to the Reporting Person's continued service as a member of the Board of Directors through each vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":222},"source":{"system":"sec-edgar","filing":"0001781162-24-000015","document":"wk-form4_1730849146.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000015/wk-form4_1730849146.xml","form_type":"4"}},{"id":1374935,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45572,"kind":"person","name":"Mercado Victorino","position":1,"cik":"0001873859","reported_name":"Mercado Victorino","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2024-11-05T23:25:54.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":true,"shares":2400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":4483,"source":{"system":"sec-edgar","filing":"0001781162-24-000015","document":"wk-form4_1730849146.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000015/wk-form4_1730849146.xml","form_type":"4"}},{"id":1374934,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45572,"kind":"person","name":"Mercado Victorino","position":1,"cik":"0001873859","reported_name":"Mercado Victorino","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2024-11-05T23:25:54.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":true,"shares":222,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":2083,"source":{"system":"sec-edgar","filing":"0001781162-24-000015","document":"wk-form4_1730849146.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000015/wk-form4_1730849146.xml","form_type":"4"}},{"id":1374933,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":32036,"kind":"person","name":"Reed Kimberly A.","position":1,"cik":"0001873931","reported_name":"Reed Kimberly A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2024-11-05T23:24:42.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":false,"shares":2400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSUs vested in full on May 29, 2024, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSUs vested in full on May 29, 2024, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":2400},"source":{"system":"sec-edgar","filing":"0001781162-24-000014","document":"wk-form4_1730849075.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000014/wk-form4_1730849075.xml","form_type":"4"}},{"id":1374932,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":32036,"kind":"person","name":"Reed Kimberly A.","position":1,"cik":"0001873931","reported_name":"Reed Kimberly A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2024-11-05T23:24:42.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":false,"shares":222,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSUs vested in three equal annual installments on the first, second and third anniversaries of August 12, 2021, subject to the Reporting Person's continued service as a member of the Board of Directors through each vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSUs vested in three equal annual installments on the first, second and third anniversaries of August 12, 2021, subject to the Reporting Person's continued service as a member of the Board of Directors through each vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":222},"source":{"system":"sec-edgar","filing":"0001781162-24-000014","document":"wk-form4_1730849075.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000014/wk-form4_1730849075.xml","form_type":"4"}},{"id":1374931,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":32036,"kind":"person","name":"Reed Kimberly A.","position":1,"cik":"0001873931","reported_name":"Reed Kimberly A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2024-11-05T23:24:42.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":true,"shares":2400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":5147,"source":{"system":"sec-edgar","filing":"0001781162-24-000014","document":"wk-form4_1730849075.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000014/wk-form4_1730849075.xml","form_type":"4"}},{"id":1374930,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":32036,"kind":"person","name":"Reed Kimberly A.","position":1,"cik":"0001873931","reported_name":"Reed Kimberly A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2024-11-05T23:24:42.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":true,"shares":222,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":2747,"source":{"system":"sec-edgar","filing":"0001781162-24-000014","document":"wk-form4_1730849075.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000014/wk-form4_1730849075.xml","form_type":"4"}},{"id":1374929,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45571,"kind":"person","name":"Reiners Linda J.","position":1,"cik":"0001873933","reported_name":"Reiners Linda J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2024-11-05T23:23:45.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":false,"shares":2400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSUs vested in full on May 29, 2024, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSUs vested in full on May 29, 2024, subject to the Reporting Person's continued service as a member of the Board of Directors through such vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":2400},"source":{"system":"sec-edgar","filing":"0001781162-24-000013","document":"wk-form4_1730849018.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000013/wk-form4_1730849018.xml","form_type":"4"}},{"id":1374928,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45571,"kind":"person","name":"Reiners Linda J.","position":1,"cik":"0001873933","reported_name":"Reiners Linda J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2024-11-05T23:23:45.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":false,"shares":222,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of Momentus, Inc. Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSUs vested in three equal annual installments on the first, second and third anniversaries of August 12, 2021, subject to the Reporting Person's continued service as a member of the Board of Directors through each vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSUs vested in three equal annual installments on the first, second and third anniversaries of August 12, 2021, subject to the Reporting Person's continued service as a member of the Board of Directors through each vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":222},"source":{"system":"sec-edgar","filing":"0001781162-24-000013","document":"wk-form4_1730849018.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000013/wk-form4_1730849018.xml","form_type":"4"}},{"id":1374927,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45571,"kind":"person","name":"Reiners Linda J.","position":1,"cik":"0001873933","reported_name":"Reiners Linda J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2024-11-05T23:23:45.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":true,"shares":2400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":5147,"source":{"system":"sec-edgar","filing":"0001781162-24-000013","document":"wk-form4_1730849018.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000013/wk-form4_1730849018.xml","form_type":"4"}},{"id":1374926,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45571,"kind":"person","name":"Reiners Linda J.","position":1,"cik":"0001873933","reported_name":"Reiners Linda J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2024-11-05T23:23:45.000Z","date":"2024-11-01","kind":"exercise","planned":false,"acquired":true,"shares":222,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":2747,"source":{"system":"sec-edgar","filing":"0001781162-24-000013","document":"wk-form4_1730849018.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000013/wk-form4_1730849018.xml","form_type":"4"}},{"id":1562982,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-03-22T21:17:41.000Z","date":"2024-03-20","kind":"exercise","planned":false,"acquired":false,"shares":8400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2024, subject to the Reporting Person's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2024, subject to the Reporting Person's continued Employment through each such vesting date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":16800,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":8400},"source":{"system":"sec-edgar","filing":"0001781162-24-000004","document":"wk-form4_1711142252.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000004/wk-form4_1711142252.xml","form_type":"4"}},{"id":1562981,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-03-22T21:17:41.000Z","date":"2024-03-20","kind":"exercise","planned":false,"acquired":false,"shares":4444,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2023, subject to the Reporting Person's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2023, subject to the Reporting Person's continued Employment through each such vesting date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":4445,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":4444},"source":{"system":"sec-edgar","filing":"0001781162-24-000004","document":"wk-form4_1711142252.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000004/wk-form4_1711142252.xml","form_type":"4"}},{"id":1562980,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-03-22T21:17:41.000Z","date":"2024-03-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":2453,"price":0.4521,"value":1109.0013,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":16521,"source":{"system":"sec-edgar","filing":"0001781162-24-000004","document":"wk-form4_1711142252.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000004/wk-form4_1711142252.xml","form_type":"4"}},{"id":1562979,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-03-22T21:17:41.000Z","date":"2024-03-20","kind":"exercise","planned":false,"acquired":true,"shares":8400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":18974,"source":{"system":"sec-edgar","filing":"0001781162-24-000004","document":"wk-form4_1711142252.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000004/wk-form4_1711142252.xml","form_type":"4"}},{"id":1562978,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-03-22T21:17:41.000Z","date":"2024-03-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":1298,"price":0.4521,"value":586.8258,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":10574,"source":{"system":"sec-edgar","filing":"0001781162-24-000004","document":"wk-form4_1711142252.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000004/wk-form4_1711142252.xml","form_type":"4"}},{"id":1562977,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45097,"kind":"person","name":"Rood John C.","position":1,"cik":"0001873855","reported_name":"Rood John C.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-03-22T21:17:41.000Z","date":"2024-03-20","kind":"exercise","planned":false,"acquired":true,"shares":4444,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":11872,"source":{"system":"sec-edgar","filing":"0001781162-24-000004","document":"wk-form4_1711142252.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000004/wk-form4_1711142252.xml","form_type":"4"}},{"id":1562975,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Restricted Stock Units","published_at":"2024-03-22T21:16:49.000Z","date":"2024-03-20","kind":"grant","planned":false,"acquired":false,"shares":2200,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2024, subject to the Reporting Person's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2024, subject to the Reporting Person's continued Employment through each such vesting date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":4400,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":2200},"source":{"system":"sec-edgar","filing":"0001781162-24-000003","document":"wk-form4_1711142194.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000003/wk-form4_1711142194.xml","form_type":"4"}},{"id":1562974,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Restricted Stock Units","published_at":"2024-03-22T21:16:49.000Z","date":"2024-03-20","kind":"grant","planned":false,"acquired":false,"shares":1111,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2023, subject to the Reporting Person's continued Employment through each such vesting date.ng date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2023, subject to the Reporting Person's continued Employment through each such vesting date.ng date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":1111,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":1111},"source":{"system":"sec-edgar","filing":"0001781162-24-000003","document":"wk-form4_1711142194.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000003/wk-form4_1711142194.xml","form_type":"4"}},{"id":1562973,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Class A Common Stock","published_at":"2024-03-22T21:16:49.000Z","date":"2024-03-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":902,"price":0.4521,"value":407.7942,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":2685,"source":{"system":"sec-edgar","filing":"0001781162-24-000003","document":"wk-form4_1711142194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000003/wk-form4_1711142194.xml","form_type":"4"}},{"id":1562972,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Class A Common Stock","published_at":"2024-03-22T21:16:49.000Z","date":"2024-03-20","kind":"exercise","planned":false,"acquired":true,"shares":2200,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":3587,"source":{"system":"sec-edgar","filing":"0001781162-24-000003","document":"wk-form4_1711142194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000003/wk-form4_1711142194.xml","form_type":"4"}},{"id":1562971,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Class A Common Stock","published_at":"2024-03-22T21:16:49.000Z","date":"2024-03-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":456,"price":0.4521,"value":206.1576,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of vested restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":1387,"source":{"system":"sec-edgar","filing":"0001781162-24-000003","document":"wk-form4_1711142194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000003/wk-form4_1711142194.xml","form_type":"4"}},{"id":1562970,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":45096,"kind":"person","name":"SCHWARZ ROBERT E","position":1,"cik":"0001905262","reported_name":"SCHWARZ ROBERT E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Class A Common Stock","published_at":"2024-03-22T21:16:49.000Z","date":"2024-03-20","kind":"exercise","planned":false,"acquired":true,"shares":1111,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Reflects a 1-for-50 reverse stock split that was effected by Momentus Inc. on August 23, 2023."}],"balance_after":1843,"source":{"system":"sec-edgar","filing":"0001781162-24-000003","document":"wk-form4_1711142194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1781162/000178116224000003/wk-form4_1711142194.xml","form_type":"4"}},{"id":1563618,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":85738,"kind":"person","name":"Ney Paul","position":1,"cik":"0001885907","reported_name":"Ney Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer & Corp.Sec"}}],"security":"Restricted Stock Units","published_at":"2024-03-22T17:16:06.000Z","date":"2024-03-20","kind":"exercise","planned":false,"acquired":false,"shares":2500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2024, subject to the Reporting Person's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2024, subject to the Reporting Person's continued Employment through each such vesting date."}],"balance_after":5000,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":2500},"source":{"system":"sec-edgar","filing":"0001781162-24-000002","document":"wk-form4_1711142144.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1885907/000178116224000002/wk-form4_1711142144.xml","form_type":"4"}},{"id":1563617,"issuer":{"id":6834,"kind":"organization","name":"Momentus Inc."},"owners":[{"id":85738,"kind":"person","name":"Ney Paul","position":1,"cik":"0001885907","reported_name":"Ney Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer & Corp.Sec"}}],"security":"Restricted Stock Units","published_at":"2024-03-22T17:16:06.000Z","date":"2024-03-20","kind":"exercise","planned":false,"acquired":false,"shares":289,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2023, subject to the Reporting Person's continued Employment through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSU Award will vest in three equal annual installments starting on March 20, 2023, subject to the Reporting Person's continued Employment through each such vesting date."}],"balance_after":289,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":289},"source":{"system":"sec-edgar","filing":"0001781162-24-000002","document":"wk-form4_1711142144.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1885907/000178116224000002/wk-form4_1711142144.xml","form_type":"4"}}],"next_cursor":"2024-03-22T17:16:06.000000Z,1563617"}