Trio Petroleum Corp. (the Company) filed Amendment No. 1 to its Prospectus Supplement on March 3, 2026. This amendment updates the amount of common stock eligible for sale under its At Market Issuance Sales Agreement (ATM Agreement) with Ladenburg Thalmann & Co. Inc. The aggregate amount of shares now eligible for sale is $3,292,000. The maximum aggregate offering amount under the ATM Agreement is $6,892,542, which includes $3,599,885 (7,344,372 shares) previously sold. The ATM Agreement allows the Company to issue and sell shares of its common stock from time to time through the Sales Agent.