{"transactions":[{"id":4638368,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-10-09T01:59:00.000Z","date":"2026-10-06","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":26857,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Reflects the disposition of shares of common stock (\"Common Stock\") of BioLife Solutions, Inc. (the \"Registrant\") in connection with the consummation on October 6, 2026 of the merger of Bravo Merger Sub I, Inc., a Delaware corporation (\"Merger Sub 1\") with and into the Registrant (the \"First Merger\"), pursuant to the Agreement and Plan of Merger, dated as of July 21, 2026 (the \"Merger Agreement\"), by and among the Registrant, Repligen Corporation, a Delaware corporation (\"Repligen\"), Merger Sub 1 and Bravo Merger Sub II, LLC, a Delaware limited liability company. At the effective time of the First Merger (the \"First Merger Effective Time\"), each outstanding share of Common Stock was converted into the right to receive $11.25 in cash and 0.1442 shares of Repligen common stock, in each case subject to the terms and conditions of the Merger Agreement."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001193125-26-418325","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1854968/000119312526418325/ownership.xml","form_type":"4"}},{"id":880794,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-02-26T22:56:12.000Z","date":"2026-02-24","kind":"grant","planned":false,"acquired":true,"shares":8170,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The restricted stock was granted pursuant to the BioLife Solutions 2023 Performance Incentive Plan and fully vests on the first anniversary of the vesting date of January 2, 2026"}],"balance_after":26857,"source":{"system":"sec-edgar","filing":"0001628280-26-012480","document":"wk-form4_1772146569.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828026012480/wk-form4_1772146569.xml","form_type":"4"}},{"id":966116,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-12-17T22:25:59.000Z","date":"2025-12-15","kind":"sale","planned":false,"acquired":false,"shares":2000,"price":24.6,"value":49200.0,"ownership":{"direct":true},"balance_after":18687,"source":{"system":"sec-edgar","filing":"0001628280-25-057721","document":"wk-form4_1766010355.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828025057721/wk-form4_1766010355.xml","form_type":"4"}},{"id":986401,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-11-28T22:39:06.000Z","date":"2025-11-26","kind":"sale","planned":false,"acquired":false,"shares":2000,"price":27,"value":54000.0,"ownership":{"direct":true},"balance_after":20687,"source":{"system":"sec-edgar","filing":"0001628280-25-054285","document":"wk-form4_1764369543.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828025054285/wk-form4_1764369543.xml","form_type":"4"}},{"id":986400,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-11-28T22:39:06.000Z","date":"2025-11-25","kind":"sale","planned":false,"acquired":false,"shares":2000,"price":27,"value":54000.0,"ownership":{"direct":true},"balance_after":22687,"source":{"system":"sec-edgar","filing":"0001628280-25-054285","document":"wk-form4_1764369543.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828025054285/wk-form4_1764369543.xml","form_type":"4"}},{"id":991901,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-11-21T23:34:58.000Z","date":"2025-11-21","kind":"sale","planned":false,"acquired":false,"shares":1000,"price":26,"value":26000.0,"ownership":{"direct":true},"balance_after":24687,"source":{"system":"sec-edgar","filing":"0001628280-25-053665","document":"wk-form4_1763768095.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828025053665/wk-form4_1763768095.xml","form_type":"4"}},{"id":991900,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-11-21T23:34:58.000Z","date":"2025-11-20","kind":"sale","planned":false,"acquired":false,"shares":4523,"price":24.51,"value":110858.73,"ownership":{"direct":true},"balance_after":25687,"source":{"system":"sec-edgar","filing":"0001628280-25-053665","document":"wk-form4_1763768095.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828025053665/wk-form4_1763768095.xml","form_type":"4"}},{"id":991899,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-11-21T23:34:58.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":477,"price":24.5,"value":11686.5,"ownership":{"direct":true},"balance_after":30210,"source":{"system":"sec-edgar","filing":"0001628280-25-053665","document":"wk-form4_1763768095.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828025053665/wk-form4_1763768095.xml","form_type":"4"}},{"id":1196284,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-03-20T23:09:37.000Z","date":"2025-03-18","kind":"grant","planned":true,"acquired":true,"shares":6876,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The restricted stock was granted pursuant to the BioLife Solutions 2023 Performance Incentive Plan (the \"2023 Plan\") and fully vests on the first anniversary of the measurement date of 01-02-2025."}],"balance_after":30687,"source":{"system":"sec-edgar","filing":"0001628280-25-014192","document":"wk-form4_1742512170.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828025014192/wk-form4_1742512170.xml","form_type":"4"}},{"id":1196283,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-03-20T23:09:37.000Z","date":"2025-03-14","kind":"sale","planned":true,"acquired":false,"shares":5632,"price":24.96,"value":140574.72,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported were effected pursuant to a Rule 10b5-1 (c) trading plan adopted by the reporting person effective as of 12-13-2024."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.18 to $25.91, inclusive. 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":23811,"source":{"system":"sec-edgar","filing":"0001628280-25-014192","document":"wk-form4_1742512170.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828025014192/wk-form4_1742512170.xml","form_type":"4"}},{"id":1579561,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-03-13T22:37:47.000Z","date":"2024-03-13","kind":"sale","planned":false,"acquired":false,"shares":5065,"price":17,"value":86105.0,"ownership":{"direct":true},"balance_after":29443,"source":{"system":"sec-edgar","filing":"0001628280-24-011026","document":"wk-form4_1710369455.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828024011026/wk-form4_1710369455.xml","form_type":"4"}},{"id":1579560,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-03-13T22:37:47.000Z","date":"2024-03-12","kind":"sale","planned":false,"acquired":false,"shares":6135,"price":16.86,"value":103436.1,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.60 to $17.11, inclusive. 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":34508,"source":{"system":"sec-edgar","filing":"0001628280-24-011026","document":"wk-form4_1710369455.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828024011026/wk-form4_1710369455.xml","form_type":"4"}},{"id":1579559,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-03-13T22:37:47.000Z","date":"2024-03-08","kind":"grant","planned":false,"acquired":true,"shares":11264,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The restricted stock was granted pursuant to the BioLife Solutions 2023 Performance Incentive Plan (the \"2023 Plan\") and fully vests on the first anniversary of the grant date."}],"balance_after":40643,"source":{"system":"sec-edgar","filing":"0001628280-24-011026","document":"wk-form4_1710369455.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828024011026/wk-form4_1710369455.xml","form_type":"4"}},{"id":1750703,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-11-03T21:09:57.000Z","date":"2023-11-01","kind":"grant","planned":false,"acquired":true,"shares":598,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of restricted stock reported herein were issued to the reporting person in lieu of a portion of cash director fees at the last closing price as of the date of grant."}],"balance_after":29379,"source":{"system":"sec-edgar","filing":"0001628280-23-036779","document":"wk-form4_1699045788.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828023036779/wk-form4_1699045788.xml","form_type":"4"}},{"id":1763055,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-10-10T21:27:30.000Z","date":"2023-10-01","kind":"grant","planned":false,"acquired":true,"shares":437,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of restricted stock reported herein were issued to the reporting person in lieu of a portion of cash director fees at the last closing price as of the date of grant."}],"balance_after":28781,"source":{"system":"sec-edgar","filing":"0001628280-23-034209","document":"wk-form4_1696973241.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000162828023034209/wk-form4_1696973241.xml","form_type":"4"}},{"id":2053193,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-01-19T00:01:35.000Z","date":"2023-01-03","kind":"grant","acquired":true,"shares":10187,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The restricted stock was granted pursuant to the BioLife Solutions 2013 Performance Incentive Plan (the \"Plan\") and fully vests on the first anniversary of the grant date."}],"balance_after":28344,"source":{"system":"sec-edgar","filing":"0001437749-23-001268","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000143774923001268/rdgdoc.xml","form_type":"4"}},{"id":2113467,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-11-18T01:00:44.000Z","date":"2022-11-15","kind":"sale","acquired":false,"shares":2600,"price":24.35,"value":63310.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.31 to $24.39, inclusive. 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":18157,"source":{"system":"sec-edgar","filing":"0001437749-22-027684","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000143774922027684/rdgdoc.xml","form_type":"4"}},{"id":2198318,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-08-03T00:02:36.000Z","date":"2022-08-01","kind":"grant","acquired":true,"shares":295,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of restricted stock reported herein were issued to the reporting person in lieu of a portion of directors fees at the last closing price as of the date of grant"}],"balance_after":20757,"source":{"system":"sec-edgar","filing":"0001437749-22-018516","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000143774922018516/rdgdoc.xml","form_type":"4"}},{"id":2213264,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-07-07T00:00:37.000Z","date":"2022-07-01","kind":"grant","acquired":true,"shares":389,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of restricted stock reported herein were issued to the reporting person in lieu of a portion of directors fees at the last closing price as of the date of grant."}],"balance_after":20462,"source":{"system":"sec-edgar","filing":"0001437749-22-016764","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000143774922016764/rdgdoc.xml","form_type":"4"}},{"id":2246150,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-06-04T00:00:26.000Z","date":"2022-06-01","kind":"grant","acquired":true,"shares":343,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of restricted stock reported herein were issued to the reporting person in lieu of a portion of directors fees at the last closing price as of the date of grant."}],"balance_after":20073,"source":{"system":"sec-edgar","filing":"0001437749-22-014306","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000143774922014306/rdgdoc.xml","form_type":"4"}},{"id":2276776,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-05-11T00:01:41.000Z","date":"2022-05-06","kind":"grant","acquired":true,"shares":14730,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The restricted stock was granted pursuant to the BioLife Solutions 2013 Performance Incentive Plan (the \"Plan\") and fully vests on the first anniversary of the grant date."}],"balance_after":19730,"source":{"system":"sec-edgar","filing":"0001437749-22-011804","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000143774922011804/rdgdoc.xml","form_type":"4"}},{"id":2749888,"issuer":{"id":4614,"kind":"organization","name":"BIOLIFE SOLUTIONS INC","symbol":"BLFS"},"owners":[{"id":64611,"kind":"person","name":"DuRoss Amy","position":1,"cik":"0001854968","reported_name":"DuRoss Amy","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-04-15T01:38:18.000Z","date":"2021-04-12","kind":"grant","acquired":true,"shares":5000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The restricted stock award was granted pursuant to the BioLife Solutions 2013 Performance Incentive Plan and fully vests on the first anniversary of the grant date."}],"balance_after":5000,"source":{"system":"sec-edgar","filing":"0001437749-21-008952","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/834365/000143774921008952/rdgdoc.xml","form_type":"4"}}]}