Mr. Scott Lendrum reports

GIGA METALS ANNOUNCES PRIVATE PLACEMENT AMENDMENT

Further to the news release dated Oct. 15, 2025, Giga Metals Corp. has amended the terms of its previously announced non-brokered private placement financing.

Each critical mineral flow-through unit will include one flow-through share that qualifies as a critical mineral flow-through share under the Income Tax Act (Canada), along with one non-transferable flow-through share purchase warrant of the company. As previously disclosed, each FT warrant will enable the holder to acquire an additional share at a price of 25 cents per share for a period of 36 months from the date of issuance.

Each NFT unit will include one non-flow-through share, along with one non-transferable non-flow-through share purchase warrant of the company. As previously disclosed, each NFT warrant will enable the holder to acquire an additional share at a price of 25 cents per share for a period of 36 months from the date of issuance.

All other terms related to the private placement remain the same.

About Giga Metals Corp.

Giga Metals' core asset is the Turnagain project, located in Northern British Columbia, which contains one of the few significant undeveloped sulphide nickel and cobalt resources in the world. Turnagain is held in Hard Creek Nickel, a subsidiary owned jointly by Giga Metals and Mitsubishi Corp. The prefeasibility study was released in October, 2023.

The Turnagain ultramafic complex is also prospective for copper, platinum and palladium mineralization in the Attic zone, an area adjacent to the known nickel resource.

We seek Safe Harbor.