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The remaining 330,000 shares subject to this option shall vest and become exercisable with respect to 25% of the shares on February 2, 2025, with the balance vesting thereafter in equal monthly installments over the next 36 months of continuous service to the Issuer, in each case subject to the Reporting Person's continued service at such time. This option was granted on May 24, 2023 subject to the approval of the Issuers' stockholders of an amendment to the TScan Therapeutics, Inc. 2021 Equity Incentive Plan, which was obtained on June 13, 2023."}],"balance_after":632500,"derivative":{"exercise_price":2.49,"expiration_date":"2033-06-12","underlying":"Voting Common Stock","underlying_shares":632500},"source":{"system":"sec-edgar","filing":"0000899243-23-015636","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1860597/000089924323015636/doc4.xml","form_type":"4"}},{"id":2075046,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":112286,"kind":"person","name":"Silver Brian M.","position":1,"cik":"0001860597","reported_name":"Silver Brian M.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Voting Common Stock","published_at":"2022-12-29T14:34:48.000Z","date":"2022-12-28","kind":"purchase","acquired":true,"shares":3158,"price":1.5646,"value":4941.0068,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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These securities were purchased in multiple transactions at prices ranging from $1.46 to $1.55, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of securities purchased at each separate price within the ranges set forth in footnotes (1) and (2) to this Form 4."}],"balance_after":29727,"source":{"system":"sec-edgar","filing":"0000899243-22-039506","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1860597/000089924322039506/doc4.xml","form_type":"4"}},{"id":2201405,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":112286,"kind":"person","name":"Silver Brian M.","position":1,"cik":"0001860597","reported_name":"Silver Brian M.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-07-27T16:30:37.000Z","date":"2022-07-25","kind":"grant","acquired":true,"shares":220000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares subject to this option vest over 4 years of service following July 25, 2022, with 25% vesting upon completion of 1 year of continuous service to the Issuer and the balance vesting in 36 equal monthly installments thereafter."}],"balance_after":220000,"derivative":{"exercise_price":3.27,"expiration_date":"2032-07-24","underlying":"Voting Common Stock","underlying_shares":220000},"source":{"system":"sec-edgar","filing":"0000899243-22-026846","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1860597/000089924322026846/doc4.xml","form_type":"4"}},{"id":2316752,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":112286,"kind":"person","name":"Silver Brian M.","position":1,"cik":"0001860597","reported_name":"Silver Brian M.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Voting Common Stock","published_at":"2022-03-28T16:31:12.000Z","date":"2022-03-24","kind":"purchase","acquired":true,"shares":15000,"price":3.3988,"value":50982.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These securities were purchased in multiple transactions at prices ranging from $3.375 to $3.48, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of securities purchased at each separate price within the ranges set forth in this footnote (1) to this Form 4."}],"balance_after":26885,"source":{"system":"sec-edgar","filing":"0000899243-22-012476","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1860597/000089924322012476/doc4.xml","form_type":"4"}},{"id":2430787,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":112286,"kind":"person","name":"Silver Brian M.","position":1,"cik":"0001860597","reported_name":"Silver Brian M.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-01-20T16:26:56.000Z","date":"2022-01-18","kind":"grant","acquired":true,"shares":115000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares subject to this option vest over 4 years of service following January 18, 2022, with 25% vesting upon completion of 1 year of continuous service to the Issuer and the balance vesting in 36 equal monthly installments thereafter."}],"balance_after":115000,"derivative":{"exercise_price":4.85,"expiration_date":"2032-01-17","underlying":"Voting Common Stock","underlying_shares":115000},"source":{"system":"sec-edgar","filing":"0000899243-22-002650","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1860597/000089924322002650/doc4.xml","form_type":"4"}},{"id":2562217,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":112286,"kind":"person","name":"Silver Brian M.","position":1,"cik":"0001860597","reported_name":"Silver Brian M.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Voting Common Stock","published_at":"2021-09-22T18:51:08.000Z","date":"2021-09-21","kind":"purchase","acquired":true,"shares":5000,"price":6.317,"value":31585.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These securities were purchased in multiple transactions at prices ranging from $6.20 to $6.432, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of securities purchased at each separate price within the ranges set forth in this footnote (1) to this Form 4."}],"balance_after":11885,"source":{"system":"sec-edgar","filing":"0000899243-21-037149","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1860597/000089924321037149/doc4.xml","form_type":"4"}},{"id":2572153,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":112286,"kind":"person","name":"Silver Brian M.","position":1,"cik":"0001860597","reported_name":"Silver Brian M.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Voting Common Stock","published_at":"2021-09-13T16:37:00.000Z","date":"2021-09-09","kind":"purchase","acquired":true,"shares":5885,"price":8.4835,"value":49925.3975,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These securities were purchased in multiple transactions at prices ranging from $8.34 to $8.52, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of securities purchased at each separate price within the ranges set forth in this footnote (1) to this Form 4."}],"balance_after":6885,"source":{"system":"sec-edgar","filing":"0000899243-21-035684","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1860597/000089924321035684/doc4.xml","form_type":"4"}},{"id":2627334,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":112286,"kind":"person","name":"Silver Brian M.","position":1,"cik":"0001860597","reported_name":"Silver Brian M.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Voting Common Stock","published_at":"2021-07-22T07:37:40.000Z","date":"2021-07-20","kind":"purchase","acquired":true,"shares":1000,"price":15,"value":15000.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares purchased in the Issuer's initial public offering."}],"balance_after":1000,"source":{"system":"sec-edgar","filing":"0000899243-21-029437","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1860597/000089924321029437/doc4.xml","form_type":"4"}},{"id":2632243,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":112286,"kind":"person","name":"Silver Brian M.","position":1,"cik":"0001860597","reported_name":"Silver Brian M.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Stock Option (right to buy)","published_at":"2021-07-16T16:40:26.000Z","date":"2021-07-15","kind":"grant","acquired":true,"shares":250441,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares subject to this option will vest with respect to 25% of the shares after 12 months of continuous service to the Issuer following May 3, 2021, and the balance will vest in equal monthly installments over the next 36 months of continuous service to the issuer. 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