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These shares were purchased in multiple transactions at prices ranging from $5.65 to $6.30, inclusive. The Reporting Person undertakes to provide to 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 set forth in this footnote."}],"balance_after":24329,"source":{"system":"sec-edgar","filing":"0000950170-25-052685","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1776111/000095017025052685/ownership.xml","form_type":"4"}},{"id":1407714,"issuer":{"id":4247,"kind":"organization","name":"MBX Biosciences, Inc."},"owners":[{"id":40955,"kind":"person","name":"Pescovitz Ora H.","position":1,"cik":"0001519624","reported_name":"Pescovitz Ora H.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2024-09-13T21:00:13.000Z","date":"2024-09-12","kind":"grant","planned":false,"acquired":true,"shares":15963,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"25% of the shares underlying this option vest and become exercisable on September 12, 2025, with the remaining 75% vesting in thirty-six (36) equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date."}],"balance_after":15963,"derivative":{"exercise_price":16,"expiration_date":"2034-09-11","underlying":"Common Stock","underlying_shares":15963},"source":{"system":"sec-edgar","filing":"0000950170-24-106431","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1776111/000095017024106431/ownership.xml","form_type":"4"}}]}