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BTR.V ·

Bonterra Announces Mailing of Rights Offering Materials

Bonterra Announces Mailing of Rights Offering

Materials

Val-d'Or, Quebec--(Newsfile Corp. - August 7, 2026) -

Bonterra Resources Inc. (TSXV: BTR)

(OTCQX: BONXF) (FSE: 9BR2)

(the "

Company

") is pleased to announce that, it completed the mail

out of the materials for its previously announced rights offering (the "

Rights Offering

") to eligible

shareholders.

A copy of the documents is also available for download from the Company's profile on

SEDAR+ at:

www.sedarplus.ca

.

The Company is offering rights (the "

Rights

") to eligible holders of its common shares (the

"

Shareholders

") as of the record date of August 6, 2026 on the basis of four fifths (0.8) of a Right for

each one (1) common share held (a "

Share

").

Each whole Right will entitle the holder to subscribe for

one Share upon payment of a subscription price of $0.12 per Share.

The Rights Offering will expire at

12:00 p.m. (Eastern time) on August 27, 2026 (the "

Expiry Time

"), after which time unexercised rights

will be void and of no value.

The Rights are listed and posted for trading on the TSX Venture Exchange

("

TSXV"

) under the symbol "BTR.RT" on a "when issued" basis and will expire at the Expiry Time.

The Rights are offered to shareholders resident in (i) all provinces and territories of Canada, and (ii) in all

jurisdictions outside Canada and the United States excluding any jurisdiction that does not provide a

prospectus exemption substantially similar to the exemption provided in Canada or that otherwise

requires obtaining any approvals of a regulatory authority in such jurisdiction or the filing of any document

by the Company in such jurisdiction in connection with the Rights Offering (the "

Eligible Jurisdictions

").

Accordingly, and subject to the detailed provisions of the rights offering circular dated July 28, 2026 (the

"

Circular

"), Rights DRS certificates (the "

Rights Certificates

") and subscription forms have not been

mailed to Shareholders resident outside of the Eligible Jurisdictions, unless such Shareholders are able

to establish to the satisfaction of the Company, on or before August 17, 2026, that they are eligible to

participate in the Rights Offering.

The Company requests any ineligible shareholder interested in

exercising their rights to contact the Rights agent, Odyssey Trust Company, or the Company at their

earliest convenience.

Shareholders who fully exercise their rights will be entitled to subscribe pro rata for

additional Shares not otherwise purchased, if any, as a result of unexercised rights prior to the Expiry

Time, subject to certain limitations set out in the Circular.

Registered Shareholders who wish to exercise their Rights must forward the completed subscription

form, together with the applicable funds, to Odyssey Trust Company on or before the Expiry Time.

Shareholders who own their shares through an intermediary, such as a bank, trust company, securities

dealer or broker, will receive materials and instructions from their intermediary.

Rights delivered to

brokers, dealers or other intermediaries may not be delivered by those intermediaries to beneficial

shareholders who are residents in a jurisdiction outside of Canada or in Quebec.

For more information about the Rights Offering, please see the Company's news release dated July 28,

2026.

The Rights Offering is subject to regulatory approval, including the approval of the TSXV.

The

Company has obtained conditional approval from the TSXV.

The securities referred to herein have not been, and will not be, registered under the United

States

Securities Act of 1933, as amended (the "

U.S. Securities Act

"), or any U.S. state securities

laws, and

may not be offered or sold in the United States or to, or for the account or benefit of, any U.S. persons or

any persons within the United States absent registration or available exemptions from the registration

requirements of the U.S. Securities Act and applicable U.S. state securities laws. This news release

shall not constitute an offer to sell or the solicitation of an offer to buy securities in the United States, nor

shall there be any sale of these securities in any jurisdiction in which such offer, solicitation or sale would

be unlawful. 'United States' and 'U.S. person' are as defined in Regulation S under the U.S. Securities

Act.

FOR ADDITIONAL INFORMATION

Cesar Gonzalez, Executive Chairman & Interim CEO

[email protected]

2872 Sullivan Road, Suite 2, Val d'Or, Quebec J9P 0B9

819-825-8678 | Website:

www.btrgold.com

Neither 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.

Forward-Looking Information

This news release may contain forward-looking statements and forward-looking information within the

meaning of applicable securities laws. All statements other than statements of historical fact may be

forward-looking statements or information. Forward-looking statements are frequently identified by

such words as “may”, “will”, “plan”, “expect”, “anticipate”, “estimate”, “intend” and similar words referring

to future events and results. The forward-looking statements and information are based on certain key

expectations and assumptions made by management of the Company. Forward-looking statements

made in this news release include, but are not limited to, statements with respect to the completion of

the Rights Offering, future performance of the Company, and the Company's plans and exploration

programs for its mineral properties, including the timing of such plans and programs.. Although

management of the Company believes that the expectations and assumptions on which such forward-

looking statements and information are based are reasonable, undue reliance should not be placed

on the forward-looking statements and information since no assurance can be given that they will

prove to be correct.

Forward-looking statements and information are provided for the purpose of providing information

about the current expectations and plans of management of the Company relating to the future.

Readers are cautioned that reliance on such statements and information may not be appropriate for

other purposes, such as making investment decisions. Actual results could differ materially from

those currently anticipated The forward-looking statements and information contained in this news

release are made as of the date hereof and no undertaking is given to update publicly or revise any

forward-looking statements or information, whether as a result of new information, future events or

otherwise, unless so required by applicable securities laws.

NOT FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES OR FOR RELEASE, PUBLICATION,

DISTRIBUTION OR DISSEMINATION DIRECTLY, OR INDIRECTLY, IN WHOLE OR IN PART, IN

OR INTO THE UNITED STATES

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/308557