Gibson Energy Inc. — Proxy Solicitation & Information Statement 2026

Apr 2, 2026

GIBSON ENERGY

Notice of Annual Meeting of Shareholders
to be held on May 5, 2026

You are invited to our 2026 annual meeting of shareholders (the "Meeting"):

When:
May 5, 2026
10:00 a.m. (Mountain Daylight Time)

Where:
In-Person at: The Westin Calgary, 320 4 Avenue S.W.,
Calgary, Alberta, T2P 2S6
Or virtually at:
https://meetings.lumiconnect.com/400-823-796-176

The items of business at the Meeting are:

(1) receiving the audited annual consolidated financial statements for the years ended December 31, 2025 and 2024 and the auditor's report thereon;
(2) electing directors for the ensuing year or until their successors are elected or appointed;
(3) appointing the auditors for the ensuing year and authorizing the directors to fix the remuneration to be paid to the auditors;
(4) considering and, if thought advisable, approving an advisory resolution on our approach to executive compensation; and
(5) transacting such other business as may properly come before the Meeting or any adjournment or postponement thereof.

No shareholder proposals were submitted to us for consideration at the Meeting.

Information relating to the foregoing is set forth in the accompanying Management Information Circular (the "Circular") which forms an integral part of this Notice of Annual Meeting of Shareholders. Only shareholders of record as of the close of business on March 18, 2026 will be entitled to notice of and to vote, in person or online, at the Meeting or any adjournment or postponement thereof. How you vote depends on whether you are a registered or beneficial shareholder. Please see the accompanying Circular beginning at page 1 for more details. The Meeting will be a hybrid meeting (virtual and in-person). Applying technology to the Meeting by allowing virtual participation will make the Meeting more relevant, accessible and engaging for all involved, permitting a broader base of shareholders to participate in the Meeting, regardless of their geographic location.

If you are unable to participate in the Meeting (in person or virtually), please vote your shares by following the instructions on the enclosed instrument of proxy or the voting information form provided by your broker or other intermediary. Registered shareholders who are unable to participate in the Meeting are requested to date, sign and return the accompanying form of proxy to Odyssey Trust Company, by mail at Traders Bank Building 1100, 67 Yonge Street Toronto, Ontario M5E 1J8 Attention: Proxy Department or by fax at (800) 517-4553. To be valid, a properly executed form of proxy must be received by Odyssey Trust Company not less than forty-eight (48) hours (excluding Saturdays, Sundays and statutory holidays in the Province of Alberta) before the time fixed for holding the Meeting or any adjournment or postponement thereof. We may refuse to recognize any instruments of proxy received after that time. Please refer to the "Solicitation of Proxies" section in the Circular for more information on how to vote at the Meeting.

By order of the Board of Directors,

(signed) "Curtis D. Philippon"

Curtis D. Philippon
President and Chief Executive Officer
March 23, 2026