Every Form 4 that BioLife Solutions Inc. (BLFS) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow BLFS and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full BLFS filings page.
BioLife Solutions executive Karen A. Foster reported equity compensation activity involving company common stock. She acquired 32,112 shares at no cost as a grant under the BioLife Solutions 2023 Omnibus Performance Incentive Plan. The restricted stock vested at approximately 156% of the target amount based on total shareholder return versus selected peers for the period from January 1, 2024 through December 31, 2025. In a related tax-withholding disposition, 13,013 shares were withheld at a price of $22.65 per share to cover tax obligations upon vesting. After these transactions, she directly held 211,083 shares of common stock.
GOSWAMI JOYDEEP reported acquisition or exercise transactions in this Form 4 filing.
BioLife Solutions Inc. director Joydeep Goswami received a grant of 8,170 shares of restricted common stock, recorded at a price of $0 per share as a stock award rather than a market purchase. Following this grant, his directly held common stock increased to 53,156 shares.
The restricted stock was granted under the BioLife Solutions 2023 Performance Incentive Plan and, according to the disclosure, will fully vest on the first anniversary of the vesting date of January 2, 2026.
BioLife Solutions Chief Financial Officer Troy Wichterman reported selling 990 shares of common stock on 01/06/2026 at $25.59 per share. Following this sale, he beneficially owned 150,746 shares.
The sale was executed under a pre-arranged Rule 10b5-1(c) trading plan adopted effective 01/03/2023 to satisfy tax withholding obligations arising from the vesting of restricted stock, indicating it was linked to equity compensation rather than a discretionary open-market exit.
BioLife Solutions Inc. executive Karen A. Foster, Chief Quality and Operations Officer, reported a small automatic sale of company stock. On 01/06/2026, she sold 335 shares of BioLife Solutions common stock at a price of $25.59 per share. After this transaction, she beneficially owned 191,984 shares of common stock directly. The sale was executed under a pre-arranged Rule 10b5-1(c) trading plan that became effective on 01/03/2023 and was used to cover tax withholding obligations tied to the vesting of restricted stock.
BioLife Solutions Inc. Chief Human Resources Officer Sarah Aebersold reported a small sale of company stock. On 01/06/2026, she sold 241 shares of Common Stock at a price of $25.59 per share, leaving her with 75,765 shares owned directly after the transaction.
According to the footnote, this sale was made under a Rule 10b5-1(c) trading plan that was adopted effective 01-03-2023. The filing explains that the trade was executed to satisfy tax withholding obligations related to the vesting of restricted stock rather than as a discretionary open-market sale.
BioLife Solutions executive Aby J. Mathew reported a small insider sale of company stock. On 01/06/2026, the EVP & Chief Scientific Officer sold 405 shares of BioLife Solutions common stock at a price of $25.59 per share. After this transaction, he directly held 349,350 shares of the company’s common stock.
The sale was made under a pre-arranged Rule 10b5-1(c) trading plan that became effective on 01/03/2023, and was carried out to satisfy tax withholding obligations arising from the vesting of restricted stock.
BioLife Solutions' Chief Marketing Officer reported a small insider sale of company stock. On 01/06/2026, Todd Berard sold 344 shares of BioLife Solutions common stock at a price of $25.59 per share, leaving him with 132,564 shares beneficially owned directly after the transaction.
According to the disclosure, this sale was made under a pre-arranged Rule 10b5-1(c) trading plan adopted effective 01/03/2023 and was executed to satisfy tax withholding obligations related to the vesting of restricted stock. This indicates the transaction was part of tax and compensation administration rather than a discretionary open-market sale.
BioLife Solutions Inc. executive vice president and chief scientific officer Aby J. Mathew reported a small insider sale of company stock. On 12/09/2025, he sold 631 shares of common stock at $25.13 per share. After this transaction, he directly owns 349,755 shares of BioLife Solutions common stock.
The filing states that this sale was executed under a pre-arranged Rule 10b5-1(c) trading plan, which was adopted effective 03-08-2024. The purpose of the plan was to sell shares to cover tax withholding obligations arising from the vesting of restricted stock, indicating this was an automated, tax-related transaction rather than a discretionary open-market sale.
BioLife Solutions Inc.'s Chief Financial Officer reported a sale of company stock under a pre-arranged Rule 10b5-1(c) trading plan. On 12/09/2025, the officer sold 1,033 shares of common stock at a price of $25.13 per share. After this transaction, the officer beneficially owned 151,736 shares of BioLife Solutions common stock in direct ownership. The filing explains that the sale was made to satisfy tax withholding obligations related to the vesting of restricted stock.
BioLife Solutions Inc. reported insider share sales by its Chief Human Resources Officer. The officer sold 233 shares of common stock on 12/09/2025 at $25.13 per share and 713 shares on 12/15/2025 at $24.46 per share. After these transactions, the officer beneficially owns 76,006 shares directly. The sales were made under a Rule 10b5-1(c) trading plan adopted effective 03-08-2024 to cover tax withholding obligations from the vesting of restricted stock.
BioLife Solutions Inc. director Amy DuRoss reported a sale of company stock. On 12/15/2025, she sold 2,000 shares of BioLife Solutions common stock at a price of $24.6 per share. After this transaction, she beneficially owned 18,687 shares, held directly.
BioLife Solutions Inc. reported an insider stock sale by its Chief Marketing Officer. On 12/09/2025, the officer sold 358 shares of common stock at a price of $25.13 per share. After this transaction, the officer beneficially owned 132,908 shares in a direct capacity.
The sale was made under a Rule 10b5-1(c) trading plan that the reporting person adopted effective 03-08-2024 to cover tax withholding obligations tied to the vesting of restricted stock. This indicates the transaction was pre-arranged for tax purposes rather than a discretionary open-market sale.
BioLife Solutions Inc. officer Karen A. Foster, Chief Quality and Operations, reported a small stock sale in a Form 4 filing. On 12/09/2025, she sold 519 shares of common stock at $25.13 per share. This transaction was made under a pre-arranged Rule 10b5-1(c) trading plan adopted effective 03-08-2024 to cover tax withholding obligations from the vesting of restricted stock. After this sale, she directly holds 192,319 shares of BioLife Solutions common stock.
BioLife Solutions Inc. (BLFS) reported an insider stock sale by a board director. Director Amy DuRoss filed a Form 4 disclosing three open-market sales of BLFS common stock on 11/19/2025, 11/20/2025, and 11/21/2025. The reported transactions were sales of 477 shares at $24.50, 4,523 shares at $24.51, and 1,000 shares at $26.00, all coded as dispositions. After these trades, DuRoss beneficially owned 24,687 shares of BioLife Solutions common stock in direct ownership.
BioLife Solutions (BLFS) disclosed insider stock sales by its President and CEO, who is also a Director. The filing reports three open‑market sales of Common Stock: 35,417 shares at a weighted average price of $26.15 on 11/11/2025; 33,418 shares at $25.88 on 11/12/2025; and 31,165 shares at $25.33 on 11/13/2025.
Following these transactions, the executive’s directly held shares moved from 454,581 to 421,163 and then to 389,998. Each price is a weighted average, with individual trades executed within disclosed ranges.
BioLife Solutions (BLFS) reported an insider transaction on Form 4. Director Joydeep Goswami sold 1,666 shares of Common Stock on 10/24/2025 at a price of $28.99 per share, coded as an open-market sale (S). The transaction was executed under a Rule 10b5-1(c) trading plan effective 12/13/2024. Following this sale, Goswami beneficially owns 44,986 shares, held directly.
BioLife Solutions (BLFS) reported an insider transaction by its President & CEO and Director. On October 22, 2025, the reporting person sold 37,795 shares of common stock at $27.3 per share under a Rule 10b5-1(c) trading plan. Following the sale, the reporting person beneficially owns 489,998 shares, held directly.
The filing notes the 10b5-1 plan was effective October 19, 2023 and was adopted to satisfy tax withholding obligations related to the vesting of restricted stock.
BioLife Solutions (BLFS) filed a Form 4 indicating CTO Sean Werner sold 275 shares of common stock at $27.82 on October 20, 2025. The filing states the trade was executed under a Rule 10b5-1(c) plan adopted effective 07-17-2024 to satisfy tax withholding related to restricted stock vesting. Following the transaction, Werner beneficially owned 26,037 shares, held directly.
BioLife Solutions (BLFS) director Joydeep Goswami reported an open-market sale of 1,334 shares of common stock on 10/16/2025. The transaction was executed at a weighted average price with trade prices ranging from $28.99 to $29.00.
Following the sale, the reporting person beneficially owns 46,652 shares directly. The filing states the trades were made under a Rule 10b5-1(c) trading plan adopted effective 12/13/2024.
BioLife Solutions (BLFS): Casdin Partners Master Fund reported an open‑market sale of 750,000 shares of common stock on 10/15/2025 at a weighted average price of $28.5471, executed in multiple trades within the $28.50–$28.8354 range. After the transactions, 5,957,165 shares were beneficially owned indirectly. The shares are held directly by the Master Fund and may be deemed to be indirectly beneficially owned by Casdin Capital, Casdin Partners GP, and Eli Casdin.
BioLife Solutions (BLFS) reported an insider transaction by its Chief Financial Officer. On 10/09/2025, the CFO executed a sale of 833 shares of common stock at a price of $27.36 per share. Following this transaction, the officer beneficially owns 183,353 shares, held directly.
The filing notes the sale was made pursuant to a Rule 10b5-1(c) trading plan, effective 01/03/2023, to satisfy tax withholding obligations arising from the vesting of restricted stock. This indicates a pre-established, automated plan tied to equity award taxation rather than a discretionary open‑market trade.
BioLife Solutions (BLFS) reported an insider transaction by its Chief Marketing Officer. On October 9, 2025, the officer sold 289 shares of common stock at $27.36 per share. Following the sale, the officer beneficially owned 133,617 shares, held directly. The filing notes the sale was made under a Rule 10b5-1(c) trading plan effective January 3, 2023, established to satisfy tax withholding obligations related to the vesting of restricted stock.
BioLife Solutions (BLFS) insider transaction: EVP & Chief Scientific Officer Aby J. Mathew reported selling 509 shares of common stock at $27.36 on October 9, 2025. The filing states the sale was made under a Rule 10b5-1(c) trading plan effective January 3, 2023, to cover tax withholding tied to restricted stock vesting. After the transaction, he beneficially owns 350,912 shares, held directly. The report was filed by one reporting person.
BioLife Solutions (BLFS) reported an insider transaction by its Chief Human Resources Officer, Sarah Aebersold. On 10/09/2025, she sold 188 shares of common stock at $27.36 per share and now beneficially owns 77,169 shares, held directly. The filing states the sale was executed under a Rule 10b5-1(c) trading plan, effective 01/03/2023, to satisfy tax withholding obligations tied to the vesting of restricted stock.
BioLife Solutions (BLFS) reported an insider transaction by its Chief Quality and Operations officer. On 10/09/2025, the reporting person sold 419 shares of common stock at $27.36 per share in a transaction coded “S.” The filing states this sale was made under a Rule 10b5-1(c) trading plan adopted effective 01-03-2023 to satisfy tax withholding obligations upon the vesting of restricted stock.
Following the sale, the reporting person beneficially owned 193,253 shares, held directly.