Notice of Postal Ballot notice intimation is attached herewith.

Hindustan Oil Exploration Company Ltd has issued a Postal Ballot Notice seeking shareholder approval for the appointment of Ms. Preeti Grover as a Non-Executive Independent Director. She was initially appointed as an Additional Director by the Board on May 12, 2026. The remote e-voting period for this special resolution will commence on June 24, 2026, and conclude on July 23, 2026. This is a standard governance procedure to formalize a board appointment.