PureWave Hydrogen Corp. — Proxy Solicitation & Information Statement 2022

Dec 29, 2022

LONGHORN EXPLORATION CORP.

Security Class

Holder Account Number

Form of Proxy - Annual General and Special Meeting to be held on January 26, 2023

This Form of Proxy is solicited by and on behalf of Management.

Notes to proxy

• 1. Every holder has the right to appoint some other person or company of their choice, who need not be a holder, to attend and act on their behalf at the meeting or any adjournment or postponement thereof. If you wish to appoint a person or company other than the Management Nominees whose names are printed herein, please insert the name of your chosen proxyholder in the space provided (see reverse).
• 1. 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.
• 1. This proxy should be signed in the exact manner as the name(s) appear(s) on the proxy.
• 1. 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.
• 1. 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, and the proxy appoints the Management Nominees listed on the reverse, this proxy will be voted as recommended by Management.
• 1. The securities represented by this proxy will be voted in favour, or withheld from voting, or voted against 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.
• 1. This proxy confers discretionary authority in respect of amendments or variations to matters identified in the Notice of Meeting and Management Information Circular or other matters that may properly come before the meeting or any adjournment or postponement thereof, unless prohibited by law.
• 1. This proxy should be read in conjunction with the accompanying documentation provided by Management.

Proxies submitted must be received by 10:00 am, (Vancouver time) on Tuesday, January 24, 2023.

VOTE USING THE TELEPHONE OR INTERNET 24 HOURS A DAY 7 DAYS A WEEK!

To Vote Using the Telephone

• • Call the number listed BELOW from a touch tone telephone.
  • 1-866-732-VOTE (8683) Toll Free

• • Go to the following web site: www.investorvote.com
• • Smartphone? Scan the QR code to vote now.

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

I/We being holder(s) of securities of Longhorn Exploration Corp. (the"Company") hereby appoint: Todd Hanas, or failing this person, RyanCheung (the "Management Nominees")				OR	Print the name of the person you areappointing if this person is someoneother than the ManagementNominees 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 beengiven, as the proxyholder sees fit) and on all other matters that may properly come before the Annual General and Special Meeting of shareholders of the Company to be held at 228 – 1122Mainland Street, Vancouver, BC V6B 5L1, on January 26, 2023 at 10:00 am, (Vancouver time) and at any adjournment or postponement thereof.
VOTING RECOMMENDATIONS ARE INDICATED BY HIGHLIGHTED TEXT OVER THE BOXES.								For	Against
1. Number of Directors
To set the number of Directors at 4.
2. Election of Directors	For	Withhold			For	Withhold		For	Withhold	-------Fold
01. Anthony Zelen			02. Todd Hanas				03. Raymond Wladichuk
04. Peter Dyakowski
								For	Withhold
3. Appointment of AuditorsAppointment of Crowe MacKay, LLP as Auditors of the Company for the ensuing year and authorizing the Directors to fix their remuneration.
								For	Against
4. Stock Option PlanApprove, ratify and affirm the Company's 10% "rolling" stock option plan.
										-------Fold

Signature of Proxyholder	Signature(s)	Date
I/We authorize you to act in accordance with my/our instructions set out above. I/We herebyrevoke any proxy previously given with respect to the Meeting. If no voting instructions areindicated above, and the proxy appoints the Management Nominees, this Proxy will bevoted as recommended by Management.
Interim Financial Statements - Mark this box if you wouldAnnual Financial Statements - Mark this box if you wouldlike to receive Interim Financial Statements andlike to receive the Annual Financial Statements andaccompanying Management's Discussion and Analysis byaccompanying Management's Discussion and Analysis by

If you are not mailing back your proxy, you may register online to receive the above financial report(s) by mail at www.computershare.com/mailinglist.

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