Exhibit 99.3
320 Bay Street, 14th Floor Toronto, ON M5H 4A6 www.computershare.com 000001 Mr A Sample Designation (if any) Security Class Add1 Common Shares Add2 add3 Holder Account Number add4 add5 C1234567890 XXX add6 Fold Form of Proxy—Special Meeting of Shareholders to be held on September 12, 2025 This Form of Proxy is solicited by and on behalf of Management. Notes to proxy 1. shareholders Every holder has or any the adjournment right to appoint or postponement some other person thereof. or company If you wish of to their appoint choice, a person who need or company not be a holder, other than to attend the Management and act on their Nominees behalf whose at the names meeting are of printed herein, please insert the name of your chosen proxyholder in the space provided (see reverse). 2. If the securities are registered in the name of more than one owner (for example, joint ownership, trustees, executors, etc.), then all those registered should sign this proxy. If you are voting on behalf of a corporation or another individual you may be required to provide documentation evidencing your power to sign this proxy with signing capacity stated. If you are voting on behalf of a corporation you are required to provide your name and designation of office, e.g., ABC Inc. per John Smith, President. 3. This proxy should be signed in the exact manner as the name(s) appear(s) on the proxy. 4. If a date is not inserted in the space provided on the reverse of this proxy, it will be deemed to bear the date on which it was mailed to the holder by Management. 5. the The Management securities represented Nominees by listed this on proxy the reverse, will be voted this proxy as directed will be by voted the holder, as recommended however, if by such Management. a direction is not made in respect of any matter, and the proxy appoints 6. The securities represented by this proxy will be voted in favour, against or withheld from voting on each of the matters described herein, as applicable, in accordance with the instructions of the holder, on any ballot that may be called for. If you have specified a choice with respect to any matter to be acted on, the securities will be voted accordingly. 7. This proxy confers discretionary authority in respect of amendments or variations to matters identified in the Notice of Meeting and Management Proxy Circular or other matters that may properly come before the meeting or any adjournment or postponement thereof, unless prohibited by law. 8. This proxy should be read in conjunction with the accompanying Notice of Meeting and the Management Proxy Circular provided by Management. Fold Proxies submitted must be received by 10:00 a.m., Eastern Time, on September 10, 2025. VOTE USING THE TELEPHONE OR INTERNET 24 HOURS A DAY 7 DAYS A WEEK! • Call the number listed BELOW from a touch tone telephone. • Go to the following web site: www.investorvote.com • You can enroll to receive future securityholder communications electronically by visiting • You can attend the meeting virtually by visiting the URL provided on the back of this document. 1-866-732-VOTE (8683) Toll Free • Smartphone? Scan the QR code to vote now. www.investorcentre.com. If you vote by telephone or the Internet, DO NOT mail back this proxy. Voting by mail may be the only method for securities held in the name of a corporation or securities being voted on behalf of another individual. Voting by mail or by Internet are the only methods by which a holder may appoint a person as proxyholder other than the Management Nominees named on the reverse of this proxy. Instead of mailing this proxy, you may choose one of the two voting methods outlined above to vote this proxy. To vote by telephone or the Internet, you will need to provide your CONTROL NUMBER listed below. CONTROL NUMBER 123456789012345 CPUQC01.E.INT/000001/i1234 023P8B
