Mr. Scott Lendrum reports

GIGA METALS COMPLETES FIRST TRANCHE OF PRIVATE PLACEMENT OF CRITICAL MINERALS FLOW-THROUGH AND NON-FLOW-THROUGH UNITS

Further to the news release dated Oct. 15, 2025, Giga Metals Corp. has closed the first tranche of its previously announced private placement of critical mineral flow-through units and non-flow-through units and increased aggregate proceeds up to $1,525,000.

The offering consists of both critical mineral flow-through units and non-flow-through units. In the first tranche of the offering, the company closed on 8,637,693 FT units at a price of 13 cents per FT unit for gross proceeds of $1,122,900 and 3,404,109 NFT units at a price of 11 cents per NFT unit for gross proceeds of $374,452.

Each critical mineral FT unit will include one flow-through share that qualifies as a critical mineral flow-through share under the Income Tax Act (Canada), along with a non-transferable share purchase warrant of the company. Each 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 share purchase warrant of the company. Each 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.

The company intends to use the gross proceeds of the private placement for exploration of the company's Turnagain nickel-cobalt project and for working capital and general corporate purposes. The flow-through proceeds of the private placement will be used to advance the Turnagain project and any other Canadian properties that the company may acquire, provided that the company will use an amount equal to the gross proceeds received by the company from the sale of the FT units to incur eligible Canadian exploration expenses that will qualify as flow-through mining expenditures as such terms are defined in the tax act.

Finders' fees were paid on 11,750,893 units for a total of $102,574 in cash plus a total of 822,563 finders' warrants. Each finder's warrant is exercisable into one common share of the company at a price of 13 cents per common shares for a period of three years from the date of issuance, being Oct. 29, 2025.

Completion of a second tranche of the private placement is anticipated to occur on or about Nov. 5, 2025 or such other date as the company may determine, and is subject to certain closing conditions, including, but not limited to, the receipt of all necessary regulatory approvals, including the approval of the TSX Venture Exchange.

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.