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The Reporting Person undertakes to provide to the registrant, any security holder of the registrant, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range."}],"balance_after":18009,"source":{"system":"sec-edgar","filing":"0001731122-26-001230","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1535036/000173112226001230/ownership.xml","form_type":"4"}},{"id":5046,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Unit","published_at":"2026-09-04T23:30:36.000Z","date":"2026-09-02","kind":"exercise","planned":false,"acquired":false,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units (\"RSUs\") convert into common stock on a one-for-one basis."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares of common stock underlying the RSUs granted to the Reporting Person on January 29, 2026. The RSUs vested in full on September 2, 2026, the date of the Issuer's 2026 Annual Meeting of Stockholders."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents shares of common stock underlying the RSUs granted to the Reporting Person on January 29, 2026. The RSUs vested in full on September 2, 2026, the date of the Issuer's 2026 Annual Meeting of Stockholders."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents shares of common stock underlying the RSUs granted to the Reporting Person on January 29, 2026. The RSUs vested in full on September 2, 2026, the date of the Issuer's 2026 Annual Meeting of Stockholders."}],"balance_after":0,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":10000},"source":{"system":"sec-edgar","filing":"0001731122-26-001201","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1535036/000173112226001201/ownership.xml","form_type":"4"}},{"id":5045,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-09-04T23:30:36.000Z","date":"2026-09-02","kind":"grant","planned":false,"acquired":true,"shares":12000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted stock units (\"RSUs\") convert into common stock on a one-for-one basis."},{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the shares of the Issuer's common stock underlying a RSU grant to the Reporting Person on September 2, 2026, which RSUs will vest in full on the date of the Issuer's 2027 Annual Meeting of Stockholders, subject to the Reporting Person's continued service to the Issuer through the vesting date."}],"balance_after":22000,"source":{"system":"sec-edgar","filing":"0001731122-26-001201","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1535036/000173112226001201/ownership.xml","form_type":"4"}},{"id":5044,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-09-04T23:30:36.000Z","date":"2026-09-02","kind":"exercise","planned":false,"acquired":true,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted stock units (\"RSUs\") convert into common stock on a one-for-one basis."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares of common stock underlying the RSUs granted to the Reporting Person on January 29, 2026. The RSUs vested in full on September 2, 2026, the date of the Issuer's 2026 Annual Meeting of Stockholders."}],"balance_after":10000,"source":{"system":"sec-edgar","filing":"0001731122-26-001201","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1535036/000173112226001201/ownership.xml","form_type":"4"}},{"id":924789,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock 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2026 Annual Meeting of Stockholders, subject to the Reporting Person's continued service to the Issuer through the vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents the shares of the Issuer's common stock underlying a RSU grant to the Reporting Person on January 29, 2026, which RSUs vest in full on the date of the Issuer's 2026 Annual Meeting of Stockholders, subject to the Reporting Person's continued service to the Issuer through the vesting date."}],"balance_after":10000,"derivative":{"underlying":"Common Stock","underlying_shares":10000},"source":{"system":"sec-edgar","filing":"0001731122-26-000165","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1419951/000173112226000165/ownership.xml","form_type":"4"}},{"id":937089,"issuer":{"id":8137,"kind":"organization","name":"Data Storage 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16b-3."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001731122-26-000089","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1419951/000173112226000089/ownership.xml","form_type":"4"}},{"id":1114805,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-06-12T01:29:21.000Z","date":"2025-06-02","kind":"grant","planned":false,"acquired":true,"shares":7915,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units (\"RSUs\") convert into common stock on a one-for-one basis."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares of the Issuer's common stock, par value $0.001 per share, underlying an RSU granted to the Reporting Person on June 2, 2025, which RSU vested in full immediately upon grant."}],"balance_after":280850,"source":{"system":"sec-edgar","filing":"0001731122-25-000861","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1419951/000173112225000861/ownership.xml","form_type":"4"}},{"id":1462737,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock 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These Options will expire on June 30, 2034."}],"balance_after":2500,"derivative":{"exercise_price":6.56,"expiration_date":"2034-06-30","underlying":"Common Stock","underlying_shares":2500},"source":{"system":"sec-edgar","filing":"0001731122-24-001070","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1419951/000173112224001070/ownership.xml","form_type":"4"}},{"id":1462736,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-07-03T01:40:23.000Z","date":"2024-06-30","kind":"grant","planned":false,"acquired":true,"shares":2500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the shares of the Issuer's common stock underlying a grant of a restricted stock unit (\"RSU\"), to Mr. Stein on June 30, 2024, which RSUs vest on the one-year anniversary of the date of grant. RSUs convert into common stock on a one-for-one basis and represent a contingent right to receive one share of the Issuer's common stock."}],"balance_after":272935,"source":{"system":"sec-edgar","filing":"0001731122-24-001070","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1419951/000173112224001070/ownership.xml","form_type":"4"}},{"id":1549233,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Options","published_at":"2024-04-03T10:08:55.000Z","date":"2024-03-31","kind":"grant","planned":false,"acquired":true,"shares":2500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"These options (\"Options\") vest and become exercisable in three equal annual installments over the three-year period measured from March 31, 2024, vesting commencing on March 31, 2025. These Options will expire on March 30, 2034."}],"balance_after":2500,"derivative":{"exercise_price":5.72,"expiration_date":"2034-03-30","underlying":"Common Stock","underlying_shares":2500},"source":{"system":"sec-edgar","filing":"0001731122-24-000580","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1419951/000173112224000580/ownership.xml","form_type":"4"}},{"id":1549232,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-04-03T10:08:55.000Z","date":"2024-03-31","kind":"grant","planned":false,"acquired":true,"shares":2500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the shares of the Issuer's common stock underlying a grant of a restricted stock unit (\"RSU\"), to Mr. Stein on March 31, 2024, which RSUs vest on the one-year anniversary of the date of grant. RSUs convert into common stock on a one-for-one basis and represent a contingent right to receive one share of the Issuer's common stock."}],"balance_after":270435,"source":{"system":"sec-edgar","filing":"0001731122-24-000580","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1419951/000173112224000580/ownership.xml","form_type":"4"}},{"id":3262799,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Options","published_at":"2020-02-19T18:47:15.000Z","date":"2017-12-14","kind":"grant","acquired":true,"shares":66666,"price":0.05,"value":3333.3,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"22,222 of the options vested on December 14, 2018, 22,222 of the options vested on December 14, 2019, and the remaining 22,222 options will vest on December 14, 2020."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"22,222 of the options vested on December 14, 2018, 22,222 of the options vested on December 14, 2019, and the remaining 22,222 options will vest on December 14, 2020."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"22,222 of the options vested on December 14, 2018, 22,222 of the options vested on December 14, 2019, and the remaining 22,222 options will vest on December 14, 2020."}],"balance_after":66666,"derivative":{"exercise_price":0.05,"exercise_date":"2018-12-14","expiration_date":"2027-12-21","underlying":"Common Stock","underlying_shares":66666},"source":{"system":"sec-edgar","filing":"0001731122-20-000190","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1419951/000173112220000190/ownership.xml","form_type":"5"}},{"id":3262798,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock 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2018."}],"balance_after":66666,"derivative":{"exercise_price":0.35,"exercise_date":"2016-12-22","expiration_date":"2025-12-21","underlying":"Common Stock","underlying_shares":66666},"source":{"system":"sec-edgar","filing":"0001731122-20-000189","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1419951/000173112220000189/ownership.xml","form_type":"5"}},{"id":3262797,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock 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2016."}],"balance_after":33333,"derivative":{"exercise_price":0.15,"exercise_date":"2014-12-13","expiration_date":"2023-12-13","underlying":"Common Stock","underlying_shares":33333},"source":{"system":"sec-edgar","filing":"0001731122-20-000188","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1419951/000173112220000188/ownership.xml","form_type":"5"}},{"id":3262796,"issuer":{"id":8137,"kind":"organization","name":"Data Storage Corp","symbol":"DTST"},"owners":[{"id":10304,"kind":"person","name":"Stein Clifford","position":1,"cik":"0001535036","reported_name":"Stein Clifford","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Options","published_at":"2020-02-19T18:44:06.000Z","date":"2012-12-11","kind":"grant","acquired":true,"shares":33333,"price":0.15,"value":4999.95,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"One hundred percent of the options vested on March 11, 2013."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"One hundred percent of the options vested on March 11, 2013."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"One hundred percent of the options vested on March 11, 2013."}],"balance_after":33333,"derivative":{"exercise_price":0.15,"exercise_date":"2013-03-11","expiration_date":"2022-12-10","underlying":"Common 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December 11, 2021, and the remaining 33,334 options will vest on December 11, 2022."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"33,333 of the options will vest on December 11, 2020, 33,333 of the options will vest on December 11, 2021, and the remaining 33,334 options will vest on December 11, 2022."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"33,333 of the options will vest on December 11, 2020, 33,333 of the options will vest on December 11, 2021, and the remaining 33,334 options will vest on December 11, 2022."}],"balance_after":100000,"derivative":{"exercise_price":0.054,"exercise_date":"2020-12-11","expiration_date":"2029-12-10","underlying":"Common 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