GeoVax names Tyler O'Brien interim CEO and chairman; five directors resigned, Behroyan joins board

GeoVax Labs, Inc.

Tyler O'Brien appointed interim Chief Executive Officer effective Nov 8, 2026, also named Chairman of the Board, serving as principal executive officer until a permanent CEO is named.
Shahin Behroyan, 39, appointed a director Nov 5, 2026; he has been CEO of iSpecimen (Nasdaq: ISPC) since Aug 26, 2026 and is deemed independent under Nasdaq Rule 5605(a)(2).
Behroyan fills a board vacancy created by the resignation of five former directors effective Oct 23, 2026; he has no immediate committee assignment.
Filing discloses Mr. Dodd's employment was terminated for 'Cause,' with potential severance of 3x base salary plus target bonus and accelerated stock option vesting if disputed.
Company cites risks including Dodd litigation, going-concern doubt, and the need to regain and maintain Nasdaq continued listing compliance.

item 5.02 item 9.01

Executive movements

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Appointed

Shahin Behroyan

director

GOVX · GeoVax Labs, Inc.

Effective: 2026-11-05
Filed: November 9, 2026, 4:32 PM ET

Effective November 5, 2026, the Board of Directors appointed Shahin Behroyan as a director of the Company.

Appointed (interim)

Tyler O’Brien

interim Chief Executive Officer

GOVX · GeoVax Labs, Inc.

Effective: 2026-11-08
Filed: November 9, 2026, 4:32 PM ET

Effective November 8, 2026, the Board of Directors appointed Tyler O’Brien as interim Chief Executive Officer.

Appointed

Tyler O’Brien

Chairman of the Board

GOVX · GeoVax Labs, Inc.

Effective: 2026-11-08
Filed: November 9, 2026, 4:32 PM ET

Effective November 8, 2026, Mr. O’Brien was also appointed as Chairman of the Board.

Key facts

Extracted from this filing and checked against the source text.

Executive change SEC 8-K Item 5.02 confidence 0.95

Shahin Behroyan was appointed as director at GeoVax Labs, Inc..

Action: appointed
Role: director

Exact text from the filing

Effective November 5, 2026, the Board of Directors appointed Shahin Behroyan as a director of the Company.

View on SEC.gov

Executive change SEC 8-K Item 5.02 confidence 0.95

Tyler O’Brien was appointed as interim Chief Executive Officer at GeoVax Labs, Inc..

Action: appointed
Role: interim Chief Executive Officer

Exact text from the filing

Effective November 8, 2026, the Board of Directors appointed Tyler O’Brien as interim Chief Executive Officer.

View on SEC.gov

Executive change SEC 8-K Item 5.02 confidence 0.95

Tyler O’Brien was appointed as Chairman of the Board at GeoVax Labs, Inc..

Action: appointed
Role: Chairman of the Board

Exact text from the filing

Effective November 8, 2026, Mr. O’Brien was also appointed as Chairman of the Board.

View on SEC.gov

GeoVax Labs, Inc. filing history →

Source: SEC EDGAR

accession 0001437749-26-035911

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