Form 4 Filing for Michael R. Girard

Michael R. Girard, a director at Avidia Bancorp, Inc. (AVBC), reported a transaction on September 16, 2026. He acquired 20,076 shares of Common Stock, with vesting commencing on September 16, 2027, as indicated by footnote F1. Following this acquisition, he directly owns 20,076 shares. Additionally, he acquired 50,190 Stock Options, which vest at a rate of 20% per year starting September 16, 2027, as per footnote F2. These options have an exercise price of $22.29 and expire on September 16, 2036. Mr. Girard also holds 975 shares of Common Stock indirectly through a Roth IRA.