O'Connell Mark's SEC Filing Summary

Mark O'Connell, a director at Avidia Bancorp, Inc., acquired 20,076 shares of Common Stock on September 16, 2026. These shares vest at a rate of 20% annually starting September 16, 2027. Concurrently, O'Connell was granted 50,190 stock options for Common Stock, also vesting at 20% annually from September 16, 2027. The options have an exercise price of $22.29 and expire on September 16, 2036. Both transactions are marked as direct ownership.