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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."}],"balance_after":869720,"source":{"system":"sec-edgar","filing":"0001880162-24-000018","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000188016224000018/primary_doc.xml","form_type":"4"}},{"id":1366825,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2024-11-13T22:54:48.000Z","date":"2024-11-12","kind":"exercise","planned":true,"acquired":true,"shares":187500,"price":0.03,"value":5625.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The transactions reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 1, 2023 (the \"10b5-1 Plan\") for a stock option award set to expire on March 20, 2025. 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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."}],"balance_after":692993,"source":{"system":"sec-edgar","filing":"0001880162-24-000007","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000188016224000007/primary_doc.xml","form_type":"4"}},{"id":1547949,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2024-04-04T21:36:11.000Z","date":"2024-04-03","kind":"exercise","planned":false,"acquired":true,"shares":187500,"price":0.03,"value":5625.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The transactions reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 1, 2023 (the \"10b5-1 Plan\") for a stock option award set to expire on March 20, 2025. 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The restricted stock units will vest as to 25% of the granted number on March 22, 2025, and the remaining 75% of the granted number will vest in 12 equal quarterly installments commencing on March 31, 2025, and thereafter at the end of each fiscal quarter of the Issuer, subject to the reporting person continuing to be a service provider (as defined in the Solid Power, Inc. 2021 Equity Incentive Plan) through the applicable vesting date."}],"balance_after":697409,"source":{"system":"sec-edgar","filing":"0001880162-24-000005","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000188016224000005/primary_doc.xml","form_type":"4"}},{"id":1569454,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2024-03-19T22:40:22.000Z","date":"2024-03-18","kind":"exercise","planned":true,"acquired":false,"shares":187500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The transactions reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 1, 2023 (the \"10b5-1 Plan\") for a stock option award set to expire on March 20, 2025. 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The price reported above reflects the weighted average price. 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The price reported above reflects the weighted average price. 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The 10b5-1 Plan is structured to include several sale periods and was established to cover the reporting person's tax liability arising from the option exercises and for longer-term asset diversification."}],"balance_after":3153579,"derivative":{"exercise_price":0.03,"exercise_date":"2021-12-08","expiration_date":"2025-03-20","underlying":"Common Stock","underlying_shares":187500},"source":{"system":"sec-edgar","filing":"0001880162-23-000003","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000188016223000003/primary_doc.xml","form_type":"4"}},{"id":1720255,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2023-12-06T22:50:32.000Z","date":"2023-12-05","kind":"sale","planned":true,"acquired":false,"shares":187500,"price":1.4724,"value":276075.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"This sale was made pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $1.42 to $1.538. The price reported above reflects the weighted average 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."}],"balance_after":206433,"source":{"system":"sec-edgar","filing":"0001880162-23-000003","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000188016223000003/primary_doc.xml","form_type":"4"}},{"id":1720254,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2023-12-06T22:50:32.000Z","date":"2023-12-05","kind":"exercise","planned":true,"acquired":true,"shares":187500,"price":0.03,"value":5625.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The transactions reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 1, 2023 (the \"10b5-1 Plan\") for a stock option award set to expire on March 20, 2025. The 10b5-1 Plan is structured to include several sale periods and was established to cover the reporting person's tax liability arising from the option exercises and for longer-term asset diversification."}],"balance_after":393933,"source":{"system":"sec-edgar","filing":"0001880162-23-000003","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000188016223000003/primary_doc.xml","form_type":"4"}},{"id":1895317,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2023-05-12T21:34:12.000Z","date":"2023-05-12","kind":"tax_withholding","planned":false,"acquired":false,"shares":5519,"price":2.07,"value":11424.33,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units."}],"balance_after":206433,"source":{"system":"sec-edgar","filing":"0001880162-23-000002","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000188016223000002/primary_doc.xml","form_type":"4"}},{"id":1974729,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2023-03-03T20:24:18.000Z","date":"2023-03-02","kind":"grant","acquired":true,"shares":349089,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The stock option will vest as to 25% of the shares of the Issuer's common stock underlying the grant on March 2, 2024, and will vest as to the remaining 75% of the shares underlying the grant in 12 equal quarterly installments commencing on March 31, 2024, and thereafter at the end of each fiscal quarter of the Issuer, subject to the reporting person continuing to be a service provider (as defined in the Issuer's 2021 Equity Incentive Plan) through the applicable vesting date."}],"balance_after":349089,"derivative":{"exercise_price":3.11,"expiration_date":"2033-03-02","underlying":"Common Stock","underlying_shares":349089},"source":{"system":"sec-edgar","filing":"0001880162-23-000001","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000188016223000001/primary_doc.xml","form_type":"4"}},{"id":1974728,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2023-03-03T20:24:18.000Z","date":"2023-03-02","kind":"grant","acquired":true,"shares":161493,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of the underlying common stock of the Issuer. The restricted stock units will vest as to 25% of the granted number on March 2, 2024, and the remaining 75% of the granted number will vest in 12 equal quarterly installments commencing on March 31, 2024, and thereafter at the end of each fiscal quarter of the Issuer, subject to the reporting person continuing to be a service provider (as defined in the Issuer's 2021 Equity Incentive Plan) through the applicable vesting date."}],"balance_after":211952,"source":{"system":"sec-edgar","filing":"0001880162-23-000001","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000188016223000001/primary_doc.xml","form_type":"4"}},{"id":2272279,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-05-13T21:09:57.000Z","date":"2022-05-12","kind":"grant","acquired":true,"shares":118313,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"25% of the shares issuable upon exercise of the option will vest in four equal annual installments commencing on May 12, 2023, subject to the reporting person continuing to be a service provider (as defined in the Company's 2021 Equity Incentive Plan) through the applicable vesting date."}],"balance_after":118313,"derivative":{"exercise_price":7.26,"expiration_date":"2032-05-12","underlying":"Common Stock","underlying_shares":118313},"source":{"system":"sec-edgar","filing":"0001104659-22-060458","document":"tm2215575-1_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000110465922060458/tm2215575-1_4seq1.xml","form_type":"4"}},{"id":2272278,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2022-05-13T21:09:57.000Z","date":"2022-05-12","kind":"grant","acquired":true,"shares":50459,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restriced stock units, which upon vesting of the unit, represent the right to receive one share of the issuer's common stock. The restricted stock units vest in four equal annual installments commencing on May 12, 2023, subject to the reporting person continuing to be a service provider (as defined in the Company's 2021 Equity Incentive Plan) through the applicable vesting date."}],"balance_after":50459,"source":{"system":"sec-edgar","filing":"0001104659-22-060458","document":"tm2215575-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000110465922060458/tm2215575-1_4seq1.xml","form_type":"4"}},{"id":2480970,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-12-09T00:58:10.000Z","date":"2021-12-08","kind":"grant","acquired":true,"shares":477296,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On December 8, 2021, the Issuer completed the merger (the \"Merger\") pursuant to the as amended Business Combination Agreement and Plan of Reorganization, by and among the Issuer, a wholly owned subsidiary of the Issuer, and Solid Power, Inc. (\"Solid Power\"). At the effective time of the Merger (the \"Effective Time\"), each Solid Power option was converted into an option to purchase a number of shares of Common Stock of the Issuer, equal to the product (rounded down to the nearest whole number) of (x) the number of shares of Solid Power Common Stock subject to such Solid Power Option immediately prior to the Effective Time and (y) an exchange ratio calculated at closing (the \"Exchange Ratio\"), at an exercise price per share (rounded up to the nearest whole cent) equal to (A) the exercise price per share of such Solid Power Option immediately prior to the Effective Time divided by (B) the Exchange Ratio."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"25% of the total number of shares issuable upon exercise of the option will vest on August 3, 2022, and 1/36 of the remaining shares issuable upon exercise of the option vest monthly thereafter."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"On December 8, 2021, the Issuer completed the merger (the \"Merger\") pursuant to the as amended Business Combination Agreement and Plan of Reorganization, by and among the Issuer, a wholly owned subsidiary of the Issuer, and Solid Power, Inc. (\"Solid Power\"). At the effective time of the Merger (the \"Effective Time\"), each Solid Power option was converted into an option to purchase a number of shares of Common Stock of the Issuer, equal to the product (rounded down to the nearest whole number) of (x) the number of shares of Solid Power Common Stock subject to such Solid Power Option immediately prior to the Effective Time and (y) an exchange ratio calculated at closing (the \"Exchange Ratio\"), at an exercise price per share (rounded up to the nearest whole cent) equal to (A) the exercise price per share of such Solid Power Option immediately prior to the Effective Time divided by (B) the Exchange Ratio."}],"balance_after":5520734,"derivative":{"exercise_price":5.02,"expiration_date":"2031-08-03","underlying":"Common Stock","underlying_shares":477296},"source":{"system":"sec-edgar","filing":"0001104659-21-147778","document":"tm2134826-14_4seq.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000110465921147778/tm2134826-14_4seq.xml","form_type":"4"}},{"id":2480969,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-12-09T00:58:10.000Z","date":"2021-12-08","kind":"grant","acquired":true,"shares":1702359,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On December 8, 2021, the Issuer completed the merger (the \"Merger\") pursuant to the as amended Business Combination Agreement and Plan of Reorganization, by and among the Issuer, a wholly owned subsidiary of the Issuer, and Solid Power, Inc. (\"Solid Power\"). At the effective time of the Merger (the \"Effective Time\"), each Solid Power option was converted into an option to purchase a number of shares of Common Stock of the Issuer, equal to the product (rounded down to the nearest whole number) of (x) the number of shares of Solid Power Common Stock subject to such Solid Power Option immediately prior to the Effective Time and (y) an exchange ratio calculated at closing (the \"Exchange Ratio\"), at an exercise price per share (rounded up to the nearest whole cent) equal to (A) the exercise price per share of such Solid Power Option immediately prior to the Effective Time divided by (B) the Exchange Ratio."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"On December 8, 2021, the Issuer completed the merger (the \"Merger\") pursuant to the as amended Business Combination Agreement and Plan of Reorganization, by and among the Issuer, a wholly owned subsidiary of the Issuer, and Solid Power, Inc. (\"Solid Power\"). At the effective time of the Merger (the \"Effective Time\"), each Solid Power option was converted into an option to purchase a number of shares of Common Stock of the Issuer, equal to the product (rounded down to the nearest whole number) of (x) the number of shares of Solid Power Common Stock subject to such Solid Power Option immediately prior to the Effective Time and (y) an exchange ratio calculated at closing (the \"Exchange Ratio\"), at an exercise price per share (rounded up to the nearest whole cent) equal to (A) the exercise price per share of such Solid Power Option immediately prior to the Effective Time divided by (B) the Exchange Ratio."}],"balance_after":5043438,"derivative":{"exercise_price":0.03,"exercise_date":"2021-12-08","expiration_date":"2027-02-01","underlying":"Common Stock","underlying_shares":1702359},"source":{"system":"sec-edgar","filing":"0001104659-21-147778","document":"tm2134826-14_4seq.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000110465921147778/tm2134826-14_4seq.xml","form_type":"4"}},{"id":2480968,"issuer":{"id":5427,"kind":"organization","name":"Solid Power, Inc."},"owners":[{"id":34053,"kind":"person","name":"Buettner-Garrett Joshua","position":1,"cik":"0001880162","reported_name":"Buettner-Garrett Joshua","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-12-09T00:58:10.000Z","date":"2021-12-08","kind":"grant","acquired":true,"shares":3341079,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On December 8, 2021, the Issuer completed the merger (the \"Merger\") pursuant to the as amended Business Combination Agreement and Plan of Reorganization, by and among the Issuer, a wholly owned subsidiary of the Issuer, and Solid Power, Inc. (\"Solid Power\"). At the effective time of the Merger (the \"Effective Time\"), each Solid Power option was converted into an option to purchase a number of shares of Common Stock of the Issuer, equal to the product (rounded down to the nearest whole number) of (x) the number of shares of Solid Power Common Stock subject to such Solid Power Option immediately prior to the Effective Time and (y) an exchange ratio calculated at closing (the \"Exchange Ratio\"), at an exercise price per share (rounded up to the nearest whole cent) equal to (A) the exercise price per share of such Solid Power Option immediately prior to the Effective Time divided by (B) the Exchange Ratio."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"On December 8, 2021, the Issuer completed the merger (the \"Merger\") pursuant to the as amended Business Combination Agreement and Plan of Reorganization, by and among the Issuer, a wholly owned subsidiary of the Issuer, and Solid Power, Inc. (\"Solid Power\"). At the effective time of the Merger (the \"Effective Time\"), each Solid Power option was converted into an option to purchase a number of shares of Common Stock of the Issuer, equal to the product (rounded down to the nearest whole number) of (x) the number of shares of Solid Power Common Stock subject to such Solid Power Option immediately prior to the Effective Time and (y) an exchange ratio calculated at closing (the \"Exchange Ratio\"), at an exercise price per share (rounded up to the nearest whole cent) equal to (A) the exercise price per share of such Solid Power Option immediately prior to the Effective Time divided by (B) the Exchange Ratio."}],"balance_after":3341089,"derivative":{"exercise_price":0.03,"exercise_date":"2021-12-08","expiration_date":"2025-03-20","underlying":"Common Stock","underlying_shares":3341079},"source":{"system":"sec-edgar","filing":"0001104659-21-147778","document":"tm2134826-14_4seq.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1880162/000110465921147778/tm2134826-14_4seq.xml","form_type":"4"}}]}