PL Gold Mine Restart Update

Mineral Resource Estimate Supports High Grade Open Pit Restart

PL Gold Mine Resource Highlights:

Measured & Indicated 601,158 Ounces Gold and Inferred 202,810 Ounces Gold

One of Canada's Highest Grade Open Pit Resources at Over 5 g/t

Open Pit and Underground Resource Expansion Potential

Toronto, Ontario--(Newsfile Corp. - September 10, 2026) - Minnova Corp. (TSXV: MCI) (OTC Pink: AGRDF) (" Minnova " or the " Company "), an advanced development-stage gold company focused on the restart and the expansion of our 100% owned PL Gold Mine in central Manitoba, is pleased to provide an update on the planned restart of the PL Gold Mine. The 2026 Mineral Resource Estimate (2026 MRE) was prepared by A&B Global Mining ("ABGM") under the supervision of Nicholas Ross King, BSc (Hons) Geology, GDE (Mining Engineering), Pr.Sci Nat., an independent consultant to the company and a Qualified Person as defined under National Instrument 43-101 – Standards of Disclosure for Mineral Projects ("NI 43-101"). Unless otherwise stated, all currencies reported in this press release are in United States dollars.

2026 Mineral Resource Estimate for the PL Gold Mine

The 2026 Mineral Resource Estimate defines 601,158 Measured & Indicated gold ounces at 4.98 g/t, including 268,091 open-pit ounces at 5.28 g/t and 202,810 Inferred gold ounces at 3.78 g/t. Additional drilling offers significant resource-growth potential.

The 2026 MRE uses a US$3,000/oz gold price; cut-off grades, costs, recoveries, dilution, and mining-loss assumptions are detailed in the Table 1 notes.

With one of Canada's highest-grade Measured and Indicated gold resources, the PL Gold Mine is positioned for restart at 1,000 tpd, expanding to 2,000 tpd in year two.

The high-grade open-pit resource materially improves restart economics. At 1,000 tpd, Minnova expects initial annual production of approximately 45,000 ounces, increasing to approximately 90,000 ounces after the planned 2,000 tpd