Rochester Resources Ltd. — AGM Information 2024

Oct 1, 2024

SIERRA GRANDE MINERALS INC.

Form of Proxy

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Trader’s Bank Building 702, 67 Yonge Street Toronto ON M5E 1J8

2019 Annual General Meeting to be held on Monday, October 28, 2024

Appointment of Proxyholder

I/We being the undersigned holder(s) of Sierra Grande Minerals Inc. hereby appoint Sonny Janda or failing this person, Navin Sandhu OR

Print the name of the person you are appointing if this person is someone other than the Management Nominees listed herein:

as my/our proxyholder with full power of substitution and to attend, act, and to vote for and on behalf of the holder in accordance with the following direction (or if no directions have been given, as the proxyholder sees fit) and all other matters that may properly come before the 2019 Annual General Meeting of Sierra Grande Minerals Inc. to be held virtually at https://us05web.zoom.us/meeting/register/tZMvc-yvpjkiGdKOiX4nRv5XxJQKuxxW7z3- at 11:20 a.m. (Pacific Time) on October 28, 2024 or at any adjournment thereof.

ath	ttps://us05web.zoom.us/m	eeting/regi	ster/tZM	vc-	yvpjkiG	dKOiX4nRv5XxJQKuxxW7z3-at	11:	20 a.m. (Pa	cific Tim	e)onOctober 28, 2024or at any ad	journme	nt thereof.
											For	Against
1.	Number of Directors.To	set the number of directors to be				elected at the Meeting to at five (5).
2.	Election of Directors.	For	Withhold			For		Withhold			For	Withhold
a.	Sonny Janda				b.	Shaun Dykes			c.	Daryl Ware-Lane
d.	Jared Scharf				e.	Ben Kramer-Miller
											For	Withhold

3. Appointment of Auditors. To appoint Buckley Dodds CPA, Chartered Professional Accountants, as auditor for the Company until the next annual general meeting at a remuneration to be fixed by the directors.

Authorized Signature(s) – This section must be completed for your instructions to be executed.

Signature(s):

Date

I/we authorize you to act in accordance with my/our instructions set out above. I/We hereby revoke any proxy previously given with respect to the Meeting. If no voting instructions are indicated above, this Proxy will be voted as recommended by Management.

MM / DD / YY

This form of proxy is solicited by and on behalf of Management. Proxies must be received by 11:20 a.m., Pacific Time, on October 24, 2024.

Notes to Proxy

1. Each holder has the right to appoint a person, who need not be a holder, to attend and represent them at the Meeting. If you wish to appoint a person other than the persons whose names are printed herein, please insert the name of your chosen proxyholder in the space provided on the reverse.

2. If the securities are registered in the name of more than one holder (for example, joint ownership, trustees, executors, etc.) then all of the registered owners must sign this proxy in the space provided on the reverse. 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.

3. This proxy should be signed in the exact manner as the name appears on the proxy. 4. If this proxy is not dated, it will be deemed to bear the date on which it is mailed by Management to the holder.

4. The securities represented by this proxy will be voted as directed by the holder; however, if such a direction is not made in respect of any matter, this proxy will be voted as recommended by Management.

5. The securities represented by this proxy will be voted or withheld from voting, in accordance with the instructions of the holder, on any ballot that may be called for and, if the holder has specified a choice with respect to any matter to be acted on, the securities will be voted accordingly.

6. This proxy confers discretionary authority in respect of amendments to matters identified in the Notice of Meeting or other matters that may properly come before the meeting.

7. This proxy should be read in conjunction with the accompanying documentation provided by Management.

INSTEAD OF MAILING THIS PROXY, YOU MAY SUBMIT YOUR PROXY USING SECURE ONLINE VOTING AVAILABLE ANYTIME:

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To Vote Your Proxy Online please visit: https://vote.odysseytrust.com

You will require the CONTROL NUMBER printed with your address to the right.

If you vote by Internet, do not mail this proxy.

To request the receipt of future documents via email and/or to sign up for Securityholder Online services, you may contact Odyssey Trust Company at https://odysseytrust.com/ca-en/help/ .

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. A return envelope has been enclosed for voting by mail.