The company has announced it will offer to shareholders of record on Thursday, Aug. 6, 2026, rights to purchase shares of the company. Four-fifths (0.80) of a right will be issued for each share held. One right and 12 cents are required to purchase one share. The expiry date for the rights offering is Thursday, Aug. 27, 2026. As at July 28, 2026, the company had 212,692,988 shares issued and outstanding. A standby commitment is associated with this rights offering for $20,418,526.80. A total of 1,237,486 non-transferable bonus warrants will be issued to four stand-by guarantors for their commitments. Each bonus warrant will be exercisable to acquire one common share of the company at an exercise price of 16.5 cents per share until Aug. 28, 2031.

Effective at the opening, Thursday, Aug. 6, 2026, the shares of the company will trade ex-rights and the rights will commence trading at that time. The company is classified as a mining company.

Summary:

Basis of offering:  one right exercisable for one share at 12 cents per share

Record date:  Aug. 6, 2026

Shares trade ex rights:  Aug. 6, 2026

Rights called for trading:  Aug. 6, 2026

Rights trade for cash:  Aug. 27, 2026

- Trading in the rights shall be for cash same day settlement on the expiry date.

Rights expire:  Aug. 27, 2026, at 12 p.m. Toronto Eastern Time

Halt and delist

The rights will be halted at noon Eastern Time, on Aug. 27, 2026, and delisted at the close.

Trade dates

Aug. 27, 2026 -- to settle -- Aug. 27, 2026

On the expiry date of the rights, trading in the rights shall cease at 9 a.m. (Vancouver time), 10 a.m. (Calgary time) and noon (Toronto and Montreal time).

Rights trading symbol:   BTR.RT

Rights Cusip No.:  09852X180

Subscription agent and trustee:  Odyssey Trust Company

Authorized jurisdiction(s):   all provinces and territories of Canada, and in all jurisdictions outside Canada where the company is eligible to make this offer

For further details, please refer to the company's rights offering circular dated July 28, 2026.