Roderick de Greef's Planned Sale of BioLife Solutions, Inc. Common Stock

Roderick de Greef, an officer and director of BioLife Solutions, Inc., has filed a Form 144 to report the planned sale of 37,795 shares of the company's common stock. The sale is scheduled to occur on October 22, 2025, and is part of a Rule 10b5-1(c) trading plan adopted on October 19, 2023. The shares to be sold are restricted stock units acquired on the same date. The sale is intended to satisfy tax withholding obligations related to the vesting of these shares. The aggregate market value of the shares to be sold is approximately $1,031,807.28. The filing also confirms that there have been no other sales of securities by de Greef in the past three months.