X0508 4 2026-03-09 0001443575 Avidbank Holdings, Inc. AVBH 0001329196 ROSINUS MIKE 1732 N 1ST STREET 6TH FLOOR SAN JOSE CA 95112 true false Common Stock 2026-03-09 4 S false 15847 28.09 D 84233 I See Footnote 1 Common Stock 16680 D 1. Such shares are held directly by PTMR Capital Partners LP ("PTMR Capital"), of which the general partners are PTMR GP, LLC ("PTMR GP") and TRF Partners LLC ("TRF"). Reporting Person is the sole member of each of PTMR GP and TRF, and has sole voting and dispositive power over shares held by PTMR Capital. Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest, if any, therein. /s/Shawn Zeagler, Attorney-in-fact for Michael F. Rosinus 2026-03-09