{"transactions":[{"id":1164986,"issuer":{"id":275,"kind":"organization","name":"Zenas BioPharma, Inc.","symbol":"ZBIO"},"owners":[{"id":80458,"kind":"person","name":"Xiao Ting","position":1,"cik":"0002035283","reported_name":"Xiao Ting","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-04-28T07:07:52.000Z","date":"2025-02-07","kind":"purchase","planned":false,"acquired":true,"shares":10000,"price":7.76,"value":77600.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported is a weighted average price. These shares were purchased in multiple transactions ranging from $7.64 to $7.78, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This Form 4/A is filed solely to amend the previous Form 4 filed by the Reporting Person on February 11, 2025, which incorrectly reported in column 5 of Table I the amount of securities beneficially owned following reported transactions as 47,000 shares. The correct amount of securities beneficially owned following the reported transactions is 10,000 shares."}],"balance_after":10000,"source":{"system":"sec-edgar","filing":"0001104659-25-039771","document":"tm2513284-1_4aseq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2035283/000110465925039771/tm2513284-1_4aseq1.xml","form_type":"4/A","original_submission_date":"2025-02-11"}},{"id":1274331,"issuer":{"id":275,"kind":"organization","name":"Zenas BioPharma, Inc.","symbol":"ZBIO"},"owners":[{"id":80458,"kind":"person","name":"Xiao Ting","position":1,"cik":"0002035283","reported_name":"Xiao Ting","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-02-11T16:20:30.000Z","date":"2025-02-07","kind":"purchase","planned":false,"acquired":true,"shares":10000,"price":7.76,"value":77600.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported is a weighted average price. These shares were purchased in multiple transactions ranging from $7.64 to $7.78, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range."}],"balance_after":47000,"source":{"system":"sec-edgar","filing":"0001104659-25-011505","document":"tm256174-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2035283/000110465925011505/tm256174-1_4seq1.xml","form_type":"4"}},{"id":1406876,"issuer":{"id":275,"kind":"organization","name":"Zenas BioPharma, Inc.","symbol":"ZBIO"},"owners":[{"id":80458,"kind":"person","name":"Xiao Ting","position":1,"cik":"0002035283","reported_name":"Xiao Ting","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2024-09-16T21:03:54.000Z","date":"2024-09-12","kind":"grant","planned":false,"acquired":true,"shares":37000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option vests in equal annual installments over three years beginning on September 12, 2025, the first anniversary of the vesting commencement date, subject to continued service."}],"balance_after":37000,"derivative":{"exercise_price":17,"expiration_date":"2034-09-11","underlying":"Common Stock","underlying_shares":37000},"source":{"system":"sec-edgar","filing":"0001104659-24-100338","document":"tm2424157-9_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2035283/000110465924100338/tm2424157-9_4seq1.xml","form_type":"4"}}]}