Gibson Energy Inc. — Proxy Solicitation & Information Statement 2022

Mar 29, 2022

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Mr A Sample Designation (if any) Add1 Add2 add3 add4 add5 add6

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8th Floor, 100 University Avenue Toronto, Ontario M5J 2Y1 www.computershare.com

Security Class COMMON SHARES Holder Account Number

C1234567890 XXX

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Form of Proxy - Annual and Special Meeting to be held on Tuesday, May 3, 2022

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 persons whose names are 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 must sign this proxy with signing capacity stated, and you may be required to provide documentation evidencing your power to sign this proxy.

3. This proxy should be signed in the exact manner as the name(s) appear(s) 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.

5. 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.

6. 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 and, if the holder has 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 or other matters that may properly come before the meeting or any adjournment or postponement thereof.

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

Proxies submitted must be received by 10:00 am (Mountain Time), on Friday, April 29, 2022

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

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To Vote Using the Telephone

• Call the number listed BELOW from a touch tone telephone.

• 1-866-732-VOTE (8683) Toll Free

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To Vote Using the Internet

• Go to the following web site: www.investorvote.com

• Smartphone? Scan the QR code to vote now.

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To Virtually Attend the Meeting

• You can attend the meeting virtually by visiting the URL provided on the back of this proxy.

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

01T1UA

C1234567890

MR SAM SAMPLE

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Appointment of Proxyholder

I/We being holder(s) of common shares of Gibson Energy Inc. (the

“Corporation”) hereby appoint(s): Steven R. Spaulding , President and Chief Executive Officer and a Director of the Corporation, or failing this person, Sean M. Brown , Senior Vice President and Chief Financial Officer of the Corporation

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

Note: If completing the appointment box above and your appointee intends on attending online YOU MUST go to http://www.computershare.com/GibsonEnergy and provide Computershare with the name and email address of the person you are appointing. Computershare will use this information ONLY to provide the appointee with a user name to gain entry to the online meeting.

as my/our proxyholder with full power of substitution and to attend, act and to vote for and on behalf of the shareholder 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 Annual and Special Meeting (the “ Meeting ”) of shareholders of the Corporation to be held via live audio webcast online at https://web.lumiagm.com/453779509 on Tuesday, May 3, 2022 at 10:00 am (Mountain Time) and at any adjournment or postponement thereof.

VOTING RECOMMENDATIONS ARE INDICATED BY HIGHLIGHTED TEXT OVER THE BOXES.

1. Election of Directors

	For	Withhold	Withhold	For	Withhold	Withhold	For	Withhold	Fold
01. James M. Estey			02. Douglas P. Bloom			03. James J. Cleary
04. Judy E. Cotte			05. Heidi L. Dutton			06. John L. Festival
07. Marshall L. McRae			08. Margaret C. Montana			09. Steven R. Spaulding
							For	Withhold
2. Appointment of Auditors
To pass a resolution appointing PricewaterhouseCoopers LLP as our auditors, to serve as our auditors until the next annual directors to fx their remuneration.						meeting of shareholders and authorizing the
							For	Against
3. Executive Compensation
To consider and, if thought advisable, to pass an		advisory resolution to accept the approach to executive compensation as disclosed in the accompanying Management
Information Circular.
							For	Against

4. Long Term Incentive Pan

To consider and, if thought advisable, by way of ordinary resolution approve all unallocated awards under our long-term incentive plan, as disclosed in the accompanying Management Information Circular.

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To transact such other business as may properly come before the Meeting or any adjournment or postponement thereof.

Signature(s) Date Authorized Signature(s) – This section must be completed for your instructions to be executed. 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 MM / DD / YY indicated above, this Proxy will be voted as recommended by Management.

Annual Financial Statements – Mark this box if you would NOT like to receive the Annual Financial Statements and accompanying Management’s Discussion and Analysis by mail.

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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