File: '\\swfile\EmailIn\20260521 140634 Attachment 260521 TBird NR.docx'

NOT FOR DISTRIBUTION TO UNITED STATES NEWS WIRE SERVICES

OR FOR DISSEMINATION IN THE UNITED STATES.

THUNDERBIRD MINERALS CORP.

620 - 1111 Melville Street

Vancouver, British Columbia

Canada, V6E 3V6

Telephone: 604 568 8807

Facsimile: 604 681 1864

www.thunderbirdminerals.ca

Thunderbird Announces Closing of Private Placement

Vancouver, British Columbia, May 21, 2026 - Thunderbird Minerals Corp. (TSX-V: BIRD) (the "Company") announces that further to its news release issued May 6, 2026, it has now closed a non-brokered private placement consisting of 30,000,000 units (the "Units") at a price of $0.05 per Unit for gross proceeds of $1,500,000 (the "Offering")

Each Unit consists of one common share of the Company and one- common share purchase warrant (the "Warrants"), with each Warrant entitling the holder to purchase one additional common share (the "Warrant Shares") at a price of $0.07 per Warrant Share for a period of 36 months expiring on May 21, 2029 (the "Expiry Date").

Thunderbird's CEO, John Newell, has subscribed for 500,000 Units. This participation by Mr. Newell constitutes a "related party transaction" as defined under Multilateral Instrument 61-101 Protection of Minority Security Holders in Special Transactions ("MI 61-101"). Such participation is exempt from the formal valuation and minority shareholder approval requirements of MI 61-101 as neither the fair market value of the units acquired by the insider, nor the consideration for the Units paid by such insider, exceed 25% of the Company's market capitalization.

The proceeds of the Offering will be used for general working capital purposes, including the settlement of current liabilities, ongoing exploration expenditures, option payments in respect of mineral properties, and other corporate and administrative expenses.

The securities issued under the Offering, and any shares that may be issuable on exercise of any such securities, are subject to a statutory hold period expiring on September 22, 2026.

No finder's fees are payable in connection with the Offering.

The Offering is subject to final approval of the TSX Venture Exchange.

About Thunderbird Minerals Corp.

Thunderbird Minerals is a Canadian junior exploration company focused on high-quality precious and base metal projects in mining-friendly jurisdictions. With a strategic portfolio and a commitment to responsible exploration, Thunderbird aims to deliver shareholder value through discovery and innovation.

John Newell

President and Chief Executive Officer

For additional information, please visit Thunderbird's website at www.thunderbirdminerals.ca or contact John Newell by telephone (604) 568-8807 or by email at info@thunderbirdminerals.ca or john.newell@thunderbirdminerals.ca.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

File: Attachment 260521 TBird NR.pdf

NOT FOR DISTRIBUTION TO UNITED STATES NEWS WIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES.

THUNDERBIRD MINERALS CORP. 620 1111 Melville Street Vancouver, British Columbia Canada, V6E 3V6 Telephone: 604 568 8807 Facsimile: 604 681 1864 www.thunderbirdminerals.ca

Thunderbird Announces Closing of Private Placement

Vancouver, British Columbia, May 21, 2026 Thunderbird Minerals Corp. (TSX-V: BIRD) (the "Company") announces that further to its news release issued May 6, 2026, it has now closed a non- brokered private placement consisting of 30,000,000 units (the "Units") at a price of $0.05 per Unit for gross proceeds of $1,500,000 (the "Offering")

Each Unit consists of one common share of the Company and one- common share purchase warrant (the "Warrants"), with each Warrant entitling the holder to purchase one additional common share (the "Warrant Shares") at a price of $0.07 per Warrant Share for a period of 36 months expiring on May 21, 2029 (the "Expiry Date").

Thunderbird's CEO, John Newell, has subscribed for 500,000 Units. This participation by Mr. Newell constitutes a "related party transaction" as defined under Multilateral Instrument 61-101 Protection of Minority Security Holders in Special Transactions ("MI 61-101"). Such participation is exempt from the formal valuation and minority shareholder approval requirements of MI 61-101 as neither the fair market value of the units acquired by the insider, nor the consideration for the Units paid by such insider, exceed 25% of the Company's market capitalization.

The proceeds of the Offering will be used for general working capital purposes, including the settlement of current liabilities, ongoing exploration expenditures, option payments in respect of mineral properties, and other corporate and administrative expenses.

The securities issued under the Offering, and any shares that may be issuable on exercise of any such securities, are subject to a statutory hold period expiring on September 22, 2026.

No finder's fees are payable in connection with the Offering.

The Offering is subject to final approval of the TSX Venture Exchange. About Thunderbird Minerals Corp.

Thunderbird Minerals is a Canadian junior exploration company focused on high-quality precious and base metal projects in mining-friendly jurisdictions. With a strategic portfolio and a commitment to responsible exploration, Thunderbird aims to deliver shareholder value through discovery and innovation.

John Newell President and Chief Executive Officer

For additional information, please visit Thunderbird's website at www.thunderbirdminerals.ca or contact John Newell by telephone (604) 568-8807 or by email at info@thunderbirdminerals.ca or john.newell@thunderbirdminerals.ca.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.