SCHEDULE 13G 0001218749 XXXXXXXX LIVE Common Stock, no par value per share 09/30/2025 0001443575 AVIDBANK HOLDINGS, INC. 05368J103 1732 North First Street 6th Floor San Jose CA 95112 Rule 13d-1(b) Endeavour Capital Advisors Inc. DE 0 697886 0 697886 697886 N 6.4 IA Laurence M. Austin X1 0 697886 0 697886 697886 N 6.4 IN HC Mitchell J. Katz X1 0 697886 0 697886 697886 N 6.4 HC IN Jonah Marcus X1 0 697886 0 697886 697886 N 6.4 IN HC AVIDBANK HOLDINGS, INC. 1732 North First Street, 6th Floor, San Jose, CA 95112 This Schedule 13G is being jointly filed by each of the following persons pursuant to Rule 13d-1(k)(1) promulgated by the Securities and Exchange Commission pursuant to Section 13 of the Act, with respect to shares of Common Stock, no par value per share (the "Common Stock") of Avidbank Holdings, Inc. (the "Issuer"): (i) Endeavour Capital Advisors Inc. ("Endeavour"), (ii) Laurence M. Austin, (iii) Mitchell J. Katz and (iv) Jonah Marcus. Endeavour Capital Advisors Inc. 410 Greenwich Avenue Greenwich, CT 06830 Endeavour is a Delaware corporation and Messrs. Austin, Katz and Marcus are citizens of the United States of America. N IA HC The information in items 5 through 9 on the cover pages of this Schedule 13G is hereby incorporated by reference. The ownership percentages are based on 10,925,102 shares of Common Stock outstanding as of September 30, 2025, as reported in Exhibit 99.1 to the Issuer's Current Report on Form 8-K filed with the Securities and Exchange Commission on October 23, 2025. Endeavour: 6.4% Laurence M. Austin: 6.4% Mitchell J. Katz: 6.4% Jonah Marcus: 6.4% Endeavour: 0 Laurence M. Austin: 0 Mitchell J. Katz: 0 Jonah Marcus: 0 Endeavour: 697,886 Laurence M. Austin: 697,886 Mitchell J. Katz: 697,886 Jonah Marcus: 697,886 Endeavour: 0 Laurence M. Austin: 0 Mitchell J. Katz: 0 Jonah Marcus: 0 Endeavour: 697,886 Laurence M. Austin: 697,886 Mitchell J. Katz: 697,886 Jonah Marcus: 697,886 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. 99.1 Joint Filing Agreement Endeavour Capital Advisors Inc. /s/ Glenn Hofsess 11/12/2025 Laurence M. Austin /s/ Laurence M. Austin 11/12/2025 Mitchell J. Katz /s/ Mitchell J. Katz 11/12/2025 Jonah Marcus /s/ Jonah Marcus 11/12/2025 *The Reporting Persons disclaim beneficial ownership in the shares reported herein except to the extent of their pecuniary interest therein, and this report shall not otherwise be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 13(d) or Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.