Form 4 Filing for Amy DuRoss - BIOLIFE SOLUTIONS INC

Amy DuRoss, a director at BIOLIFE SOLUTIONS INC (BLFS), reported the disposition of 26,857 shares of common stock on October 6, 2026. This transaction occurred in connection with the merger of Bravo Merger Sub I, Inc. with and into the Registrant, as per the merger agreement dated July 21, 2026. Each outstanding share of common stock was converted into $11.25 in cash and 0.1442 shares of Repligen common stock. Following this transaction, Ms. DuRoss holds 0 shares of common stock. The filing is a Form 4 and is not subject to Section 16 reporting requirements.