WSP Global Inc. — Proxy Solicitation & Information Statement 2026

Apr 1, 2026

WSP

Computershare

320 Bay Street, 14th Floor

Toronto, ON M5H 4A6

www.computershare.com

Security Class

123

Holder Account Number

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Form of Proxy - Annual Meeting of Shareholders to be held on Thursday, May 7, 2026

Notes to Proxy

1. Every shareholder has the right to appoint a person of their choice, who need not be a shareholder, to attend and act on their behalf at the meeting. If you wish to appoint a person other than the persons whose names are printed herein as your proxyholder, please insert the name of your chosen proxyholder in the space provided (see reverse) and follow the instructions provided to register their appointment as proxyholder.

2. This form of proxy must be signed by the person whose name appears on the form of proxy as the registered shareholder in order to be deemed valid.

3. 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.

4. This form of proxy should be read in conjunction with the Notice of Annual Meeting of Shareholders and the Management Information Circular in respect of the annual meeting of shareholders to be held on May 7, 2026 (the "Meeting"). The Notice of Annual Meeting of Shareholders and the Management Information Circular are available on WSP's website at www.wsp.com.

5. If this form of proxy is not dated, it will be deemed to bear the date on which it is mailed by management to the holder.

6. The shares 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 "FOR" items 1, 2 and 3.

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Proxies submitted must be received by 11:00 a.m. (Eastern Daylight Time) on May 5, 2026.

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

If you vote by telephone or the Internet, DO NOT mail back this proxy.

Voting by mail may be the only voting 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 voting methods by which a holder may appoint a person as proxyholder other than the management nominees named on the reverse of this form of proxy. Instead of mailing this form of proxy, you may choose one of the two other 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

025BRA

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

Appointment of Proxyholder

I/We, being holder(s) of common shares of WSP Global Inc. (the "Corporation"), hereby appoint: Alexandre L'Heureux, director, President and Chief Executive Officer of the Corporation, or failing him. Philippe Fortier, Chief Legal Officer of the Corporation, or

OR

Print the name of the person you are appointing if this person is someone other than the President and Chief Executive Officer of the Corporation, or the Chief Legal Officer of the Corporation,

If you complete the appointment box and appoint a proxyholder other than the President and Chief Executive Officer of the Corporation, or the Chief Legal Officer of the Corporation, you MUST go to http://www.computershare.com/WSP and provide Computershare with the name and email address of the person you are appointing by no later than 11:00 a.m. (Eastern Daylight Time) on May 5, 2026. Computershare will use this information ONLY to provide the appointee with a log-in code to gain entry to the virtual Meeting. For additional details, see the section "APPOINTING A PROXYHOLDER TO VOTE AT THE MEETING" of the management information circular in respect of the Meeting (the "Information Circular").

as my/our proxyholder with full power of substitution and to vote in accordance with the following direction (or, in the case of amendments or variations to the matters identified in the Notice of Meeting and new points properly brought before the Meeting, as the proxyholder sees fit) at the Annual Meeting of Shareholders to be held on Thursday, May 7, 2026, at 11:00 a.m. (Eastern Daylight Time), via the Internet at https://meetings.lumiconnect.com/400-802-840-155 password WSP2026 (case sensitive) and at any adjournment thereof.

The Board of Directors and Management recommend that shareholders VOTE FOR items 1, 2 and 3.

VOTING RECOMMENDATIONS ARE INDICATED BY BANKS AND TEXT OVER THE BOXES. Please use a dark black pencil or pen.

1. Election of Directors

	FOR AGAINST			FOR AGAINST			FOR AGAINST
1. Christopher Cole	☐	☐	☐	4. Alexandre L'Heureux	☐	☐	☐	7. Pascale Sourisse	☐
2. Martine Ferland	☐	☐	☐	5. Suzanne Rancourt	☐	☐	☐	8. Macky Tall	☐
3. Eric Lamarre	☐	☐	☐	6. Linda Smith-Galipeau	☐	☐	☐	9. Claude Tessier	☐

2. Appointment of Auditors

To appoint PricewaterhouseCoopers LLP as auditors of the Corporation for the forthcoming year and authorize the directors to fix the auditor's remuneration.

3. Executive Compensation

Consider a non-binding advisory resolution on the Corporation's approach to executive compensation.

	FOR AGAINST
For	☐	☐
For	☐	☐
FOR	☐	☐

Signature of Proxyholder

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, and the proxy appoints the Management Nominees, this Proxy will be voted as recommended by Management. 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.

Signature(s)

Signing Capacity

Date

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To reduce costs and help protect the environment, we no longer send paper copies of WSP's annual financial statements and related management's discussion and analysis (Annual Report) and WSP's quarterly financial statements and related management's discussion and analysis (Quarterly Reports) and Information Circular, unless you tell us that you want to receive them in paper format by checking the appropriate box below. Such documents are available on WSP's website at www.wsp.com.

☐ Quarterly Reports
☐ Annual Report

You can also receive these documents electronically - see reverse for instructions to enroll for electronic delivery.

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390213
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025BSC