The Information Circular provides additional information relating to the matters to be dealt with at the Meeting and forms an integral part of this notice. The Board of Directors has fixed July 14, 2025 as the record date for the determination of the shareholders entitled to receive notice of the Meeting and vote at the Meeting. To maximize the number of participants at the Meeting, the Company will be holding the Meeting virtually via a live audio webcast available online at meetings.lumiconnect.com/400-353-766-264, where all shareholders regardless of geographic location will have an equal opportunity to participate and vote.

Notice-and-Access

As permitted under Canadian securities rules, management is using “Notice-and-Access” to deliver the Information Circular prepared in connection with the Meeting and the Annual Financial Statements to both registered and non-registered shareholders. This means that instead of mailing paper copies of the Information Circular and the Annual Financial Statements, these are posted online for shareholders to access them, which reduces mailing and printing costs, and is more environmentally friendly as it reduces paper use. Shareholders will therefore receive by mail (i) this notice, which explains how to access the Information Circular and the Annual Financial Statements electronically and request paper copies, and how to vote and/or attend the Meeting, (ii) a form of proxy (for registered shareholders) or a voting instruction form (“VIF”) (for non-registered shareholders), with instructions on how to vote, and (iii) an additional document explaining how to attend and vote at the Meeting (the “Virtual Meeting User Guide”). Shareholders who previously signed up for electronic delivery of Meeting materials will receive them via email.

How to Access the Information Circular and Annual Financial Statements

The Information Circular and Annual Financial Statements and other Meeting materials are available on our website at www.alithya.com/en/alithya/investors, on the website of our transfer agent, TSX Trust Company (“TSX Trust”), at www.meetingdocuments.com/TSXT/ALYA, as well as on

SEDAR+ at www.sedarplus.ca and on EDGAR at www.sec.gov. Please review the Information Circular before voting.

How to Request Paper Copies

Shareholders may request paper copies of the Information Circular and Annual Financial Statements at no cost.

Before the Meeting, shareholders may request paper copies on the website of TSX Trust at www.meetingdocuments.com/TSXT/ALYA or by contacting TSX Trust at 1-888-433-6443 (toll free in Canada and the U.S.) or 1-416-682-3801. The Information Circular and/or Annual Financial Statements, as applicable, will be sent within three business days of receipt of the request. To receive a paper copy of the Information Circular prior to the 10:00 a.m. (Eastern Daylight Time) voting deadline on September 8, 2025, requests must be received by no later than 10:00 a.m. (Eastern Daylight Time) on August 29, 2025. Shareholders who request paper copies of these documents will not receive a new form of proxy or VIF and should therefore keep the form that was sent to them to vote their shares. After the Meeting, requests for paper copies may be made by email at secretariat@alithya.com, by mail at Corporate Secretariat, Alithya Group inc., 700, René-Lévesque West Blvd, Suite 400, Montréal, Québec, H3B 1X8, or by phone at 1-844-985-5552. Paper copies of the documents will be sent within ten business days of receipt of the request.

How to Vote

Shareholders may vote prior to the Meeting or at the Meeting. It is however recommended that shareholders vote prior to the Meeting using all forms of proxy or VIFs received even if they intend to attend the Meeting. Shareholders should read the Information Circular and other Meeting materials before voting and refer to the instructions on their form of proxy or VIF and in the Information Circular for details on how to vote. Voting instructions must be received by the 10:00 a.m. (Eastern Daylight Time) voting deadline on September 8, 2025 (or if the Meeting is adjourned or postponed, by 10:00 a.m. (Eastern Daylight Time) on the business day prior to the day fixed for the adjourned or postponed meeting).

How to Attend the Meeting

The Meeting will be held virtually via a live audio webcast available online at meetings.lumiconnect.com/400-353-766-264 and will be open to all shareholders as well as to the general public, except that only registered shareholders and duly appointed and registered proxyholders will have the opportunity to vote and ask questions. The process to attend the Meeting is different for registered shareholders and non-registered shareholders.

Please refer to the information contained in this notice, the Information Circular and the Virtual Meeting User Guide. It is recommended to undertake all required steps at least one week before the Meeting and to join the Meeting at least 15 minutes before it begins to avoid missing the beginning due to technical difficulties.

REGISTERED SHAREHOLDERS

Shareholders who received a form entitled “Form of Proxy” or an email directed to registered shareholders from TSX Trust are registered shareholders. To attend the Meeting, registered shareholders may visit meetings.lumiconnect.com/400-353-766-264 on the day of the Meeting, select the option “I have a login” and enter the 13-digit control number that appears on their form of proxy or in the email they received, as their username, and “alithya2025” (case sensitive) as their password.

Registered shareholders who appointed someone else than the persons named by management as their proxyholder to represent them at the Meeting must, after having submitted their proxy, either contact or have their proxyholder contact TSX Trust by phone at 1-866-751-6315 (toll free in Canada and the U.S.) or 1-416-682-3860, or complete the online form at www.tsxtrust.com/control-number-request, by no later than 10:00 a.m. (Eastern Daylight Time) on September 8, 2025 to register such other person and provide an email address at which TSX Trust will send a 13-digit proxyholder control number 24 to 48 hours before the Meeting.

NON-REGISTERED SHAREHOLDERS

Shareholders who received a form entitled “Voting Instruction Form” from TSX Trust or their intermediary or an email requesting voting instructions from their intermediary, and shareholders who participate in the Company’s Employee Share Purchase Plan (“ESPP Participants”) are non-registered shareholders. Non-registered shareholders are shareholders whose shares are registered in the name of their intermediary (such as a securities broker or a financial institution) which holds them on their behalf. As the Company and TSX Trust do not typically have a record of such shareholders, and, as a result, of their entitlement to vote, non-registered shareholders who wish to vote and ask questions at the Meeting or appoint someone else than the persons named by management must follow the following two steps:

Step 1: Submit their voting instructions and appoint themselves or someone else as their proxyholder by mail, internet, fax or email, as applicable, by no later than 10:00 a.m. (Eastern Daylight Time) on September 8, 2025 or such other deadline their intermediary may fix. Voting by phone is not recommended as it is not possible to appoint someone else than the persons named by management by phone.

Important Note: U.S. non-registered shareholders who are not ESPP Participants and who wish to appoint themselves or a proxyholder must obtain a legal proxy form from their intermediary and submit it to TSX Trust by no later than 10:00 a.m. (Eastern Daylight Time) on September 8, 2025.

Step 2: Once their voting instructions or legal proxy form has been submitted, non-registered shareholders or their proxyholder must contact TSX Trust by phone at 1-866-751-6315 (toll free in Canada and the U.S.) or 1-416-682-3860, or complete the online form at www.tsxtrust.com/control-number-request, by no later than 10:00 a.m. (Eastern Daylight Time) on September 8, 2025 to register and provide an email address at which TSX Trust will send a 13-digit proxyholder control number 24 to 48 hours before the Meeting.

Once these steps are completed and a proxyholder control number has been received, non-registered shareholders or their proxyholder will be able to attend the Meeting at meetings.lumiconnect.com/400-353-766-264 by selecting the option “I have a login” and entering their 13-digit proxyholder control number as their username and “alithya2025” (case sensitive) as their password. Without a proxyholder control number, non-registered shareholders and their proxyholders will only be able to attend the Meeting by selecting the option “I am a guest”, which will not entitle them to vote or ask questions. Non-registered shareholders who do not complete the above two steps by 10:00 a.m. (Eastern Daylight Time) on September 8, 2025 will not be able to obtain a proxyholder control number. The control number appearing on their VIF is NOT a proxyholder control number and may not be used to attend the Meeting.

Questions

For questions about “Notice-and-Access” or assistance with the process to vote or attend the Meeting, shareholders may contact TSX Trust by phone at 1-800-387-0825 or Broadridge Financial Solutions, Inc. at 1-844-916-0609 (toll free in North America) or 1-303-562-9305, as applicable. For live technical assistance in operating the Meeting platform and voting during the Meeting, please contact Lumi Canada Inc. at support-ca@lumiglobal.com.

Montréal, Québec

July 14, 2025

By Order of the Board of Directors,

Nathalie Forcier

Chief Legal Officer and Corporate Secretary

This management information circular (the “Information Circular”) is provided in connection with the solicitation of proxies by the management of Alithya Group inc. for use at its annual general meeting of shareholders which will be held on Wednesday, September 10, 2025, at 10:00 a.m. (Eastern Daylight Time), for the purposes set forth in the foregoing Notice of Meeting, or at any adjournment or postponement thereof (the “Meeting”). To maximize the number of participants at the Meeting, the Company will be holding the Meeting virtually via a live audio webcast available online, where all shareholders regardless of geographic location will have an equal opportunity to participate and vote.

The record date for determination of shareholders entitled to receive notice of, and vote at, the Meeting is July 14, 2025 (the “Record Date”).

In this document “you” and “your” refer to the shareholders of Alithya Group inc. and “Alithya”, the “Company”, “we”, “us”, or “our” refer to Alithya Group inc. (and, where the context so requires, Alithya Group inc. and its subsidiaries).

The information provided in this Information Circular that relates to financial information is provided as at March 31, 2025. Except as otherwise stated, all other information is provided as at July 14, 2025 and all dollar amounts shown are in Canadian dollars.

As permitted under Canadian securities rules, management is using “Notice-and-Access” to deliver this Information Circular and the annual financial statements to both registered and non-registered shareholders. This means that instead of mailing paper copies of this Information Circular to shareholders holding Class A subordinate voting shares (“subordinate voting shares”) or Class B multiple voting shares (“multiple voting shares” and, collectively with the subordinate voting shares, the “Shares”) as of the Record Date, this Information Circular is being posted online for shareholders to access it electronically, which reduces printing and mailing costs and is more environmentally friendly as it reduces paper use. Shareholders will therefore receive by mail (i) a notice explaining how to electronically access the Information Circular and the audited consolidated financial statements of the Company for the fiscal year ended March 31, 2025 (“fiscal 2025”) and the auditor’s report thereon (the “Annual Financial Statements”), how to request paper copies thereof, and how to vote and/or attend the Meeting, (ii) a form of proxy (for registered shareholders) or a voting instruction form (“VIF”) (for non-registered shareholders) with instructions on how to vote, and (iii) a document explaining how to attend the Meeting. Shareholders who previously signed up for electronic delivery of Meeting materials will receive them by email.

Non-registered shareholders are either objecting beneficial owners who object that intermediaries disclose information about their ownership in the Company, or non-objecting beneficial owners who do not object to such disclosure. Alithya is sending proxy-related materials directly to registered shareholders and non-registered shareholders who are non-objecting beneficial owners and is paying for intermediaries to deliver such materials to non-registered shareholders who are objecting beneficial owners.

HOW TO ACCESS THE INFORMATION CIRCULAR AND THE ANNUAL FINANCIAL STATEMENTS ELECTRONICALLY

This Information Circular and the Annual Financial Statements are available on our website at www.alithya.com/en/alithya/investors, on the website of our transfer agent, TSX Trust Company (“TSX Trust”) at www.meetingdocuments.com/TSXT/ALYA, on SEDAR+ at www.sedarplus.ca and on EDGAR at www.sec.gov.

HOW TO REQUEST A PAPER COPY OF THE INFORMATION CIRCULAR AND ANNUAL FINANCIAL STATEMENTS

You may request a paper copy of the Information Circular and the Annual Financial Statements at no cost up to one year from the date the Information Circular was filed on SEDAR+ and EDGAR.

Before the Meeting, shareholders may request paper copies of the Information Circular and the Annual Financial Statements prior to the Meeting on the website of TSX Trust at www.meetingdocuments.com/TSXT/ALYA or by contacting TSX Trust at 1-888-433-6443 (toll free in Canada and the U.S.) or 1-416-682-3801. The Information Circular and/or Annual Financial Statements, as applicable, will be sent within three business days of receipt of the request. Your request should be received no later than 10:00 a.m. (Eastern Daylight Time) on August 29, 2025 to receive the Information Circular prior to the 10:00 a.m. (Eastern Daylight Time) voting deadline on September 8, 2025. Shareholders who request paper copies of the Information Circular and Annual Financial Statements will not receive a new form of proxy or VIF and should therefore keep the original form sent to them to vote their Shares.

After the Meeting, requests for paper copies may be made by email at secretariat@alithya.com, by mail at Corporate Secretariat, Alithya Group inc., 700, René-Lévesque West Blvd, Suite 400, Montréal, Québec, H3B 1X8 or by phone at 1-844-985-5552. Paper copies will be sent within ten business days of receipt of the request.

QUESTIONS?

For questions about “Notice-and-Access” or for assistance with the process to vote or attend the Meeting, please contact TSX Trust by phone at 1-800-387-0825, or Broadridge Financial Solutions, Inc. at 1-844-916-0609 (toll free in North America) or 1-303-562-9305, as applicable. For live technical assistance in operating the Meeting platform and voting during the Meeting, please contact Lumi Canada Inc. (“Lumi”) at support-ca@lumiglobal.com. If you have questions about the information contained in this Information Circular, please contact our Corporate Secretariat team by email at secretariat@alithya.com or by mail at the address indicated in the section above.

Shareholders holding subordinate voting shares or multiple voting shares as at the close of business on the Record Date are entitled to vote at the Meeting and at any adjournment or postponement thereof. Your vote is important. Voting by proxy prior to the Meeting is the easiest way to vote your Shares. As a shareholder, it is important that you read this Information Circular carefully and vote your Shares either prior to the Meeting by proxy or at the Meeting by following the steps explained below.

Depending on how your Shares are registered, you may be a registered shareholder for a portion of your Shares and a non-registered shareholder for the balance thereof and may accordingly receive both a form of proxy and a VIF. It is recommended to vote using all forms received to ensure that all of your Shares are voted.

Employees who participate in the Company’s Employee Share Purchase Plan and have their shares managed by TSX Trust, in its capacity of plan administrator, (“ESPP Participants”) will receive the Meeting materials electronically from TSX Trust with instructions on how to vote using the internet.

How to Vote

REGISTERED SHAREHOLDERS

You are a registered shareholder if your Shares are registered in your name (i.e. your name appears on your share certificate or Direct Registration System (DRS) statement) and you received a form entitled “Form of Proxy” or an email directed to registered shareholders from TSX Trust.

Option 1 - Voting by Proxy Prior to the Meeting (Form of Proxy)

Voting by proxy means appointing a proxyholder (i.e. the persons named by management, yourself or someone else) to vote as per your voting specifications, if any, at the Meeting. You may vote by proxy using one of the methods described below:

		Internet: Go to www.meeting-vote.com and follow the instructions. You will need your 13-digit control number that appears on your form of proxy or in the email TSX Trust sent you, if you signed up for electronic delivery.
		Phone: Call 1-888-489-7352 (toll free in Canada and the U.S.). You will need your 13-digit control number that appears on your form of proxy or in the email you received from TSX Trust. If you vote by phone, you will not be able to appoint anyone other than the persons named by management as your proxyholder to represent you at the Meeting. Therefore, if you wish to appoint someone else as your proxyholder to attend the Meeting, this voting method is not recommended.
		Fax or email: Complete your form of proxy and send it to TSX Trust by fax at 1-416-595-9593, or scan and email it to TSX Trust at proxyvote@tmx.com.
		Mail: Complete and return your form of proxy in the prepaid envelope provided.

Your duly completed form of proxy must be received by TSX Trust, or you must have voted on the internet, by phone, by fax

or by email by no later than 10:00 a.m. (Eastern Daylight Time) on September 8, 2025 or, if the Meeting is adjourned or postponed, 10:00 a.m. (Eastern Daylight Time) on the business day prior to the day fixed for the adjourned or postponed meeting. If you elect to vote through the internet or by phone, you do not need to return your form of proxy.

When completing your form of proxy, make sure to indicate the name of the person you wish to appoint as your proxyholder to attend the Meeting on your behalf or leave the space for the appointment blank if you wish to appoint the persons named by management. In both cases, it is recommended to indicate how you wish to vote for each item to be voted on, otherwise your proxyholder will have the discretion to vote as he or she sees fit. If you appoint a proxyholder who is not the persons named by management, once your form is submitted, please contact, or ask your proxyholder to contact, TSX Trust by phone at 1-866-751-6315 (toll free in Canada and the U.S.) or 1-416-682-3860, or complete the online form available at www.tsxtrust.com/control-number-request, by no later than 10:00 a.m. (Eastern Daylight Time) on September 8, 2025 in order to register your proxyholder and provide an email address at which TSX Trust will send a 13-digit proxyholder control number for your proxyholder to be able to join the Meeting. Proxyholder control numbers will be distributed by TSX Trust 24 to 48 hours before the Meeting. Without a proxyholder control number, your proxyholder will be unable to join the Meeting and if your proxyholder does not join the Meeting, your voting rights will not be exercised, as your proxyholder is required to attend the Meeting for them to be exercised.

Option 2 – Attending and Voting at the Meeting

If you wish to attend and vote at the Meeting, you do not need to complete or submit your form of proxy. You may simply visit meetings.lumiconnect.com/400-353-766-264 on the day of the Meeting, select the option “I have a login” and enter the 13-digit control number that appears on your form of proxy or in the email TSX Trust sent you, if you signed up for electronic delivery, as your control number and “alithya2025” (case sensitive) as your password. Once logged in, simply follow the instructions on the screen during the Meeting. Joining the Meeting by selecting the option “I am a guest” will not allow you to vote or ask questions at the Meeting.

If you wish to appoint someone else to attend the Meeting on your behalf, please follow the instructions indicated in the preceding section entitled “Option 1 – Voting by Proxy Prior to the Meeting (Form of Proxy)”.

NON-REGISTERED SHAREHOLDERS

You are a non-registered shareholder if your Shares are not registered in the records of the Company directly in your name, but instead in the name of an intermediary (such as a securities broker or a financial institution) which holds them on your behalf. If you received a form entitled “Voting Instruction Form” from TSX Trust or your intermediary or an email requesting voting instructions from your intermediary, your Shares are not registered in your name.

Employees who participate in the Company’s Employee Share Purchase Plan and have their shares managed by TSX Trust, in its capacity of plan administrator, are non-registered shareholders and will receive the Meeting materials electronically from TSX Trust with instructions on how to vote using the internet, which instructions are similar to those described below.

Option 1 - Voting by Proxy Prior to the Meeting (Voting Instruction Form)

Voting by proxy means appointing a proxyholder (i.e. the persons named by management, yourself or someone else) to vote as per your voting instructions, if any, at the Meeting. Instructions for voting by proxy prior to the Meeting vary depending on whether you received a VIF from TSX Trust or your intermediary.

If you received a VIF from TSX Trust, you may vote by proxy by giving your voting instructions using one of the methods described below:

		Internet: Go to www.meeting-vote.com and follow the instructions. You will need your 13-digit control number that appears on your VIF.
		Phone: Call 1-888-489-7352 (toll free in Canada and the U.S.). You will need your 13-digit control number that appears on your VIF. If you vote by phone, you will not be able to appoint anyone other than the persons named by management on your VIF as your proxyholder. Therefore, if you wish to appoint someone else as your proxyholder to attend the Meeting, this voting method is not recommended.
		Fax or email: Complete the VIF and send it to TSX Trust by fax at 1-416-595-9593, or scan and email it to TSX Trust at proxyvote@tmx.com.
		Mail: Complete and return your VIF in the prepaid envelope provided.

If you received a VIF or an email from your intermediary, you may vote by proxy by giving your voting instructions using one of the methods described below:

		Internet: Go to www.proxyvote.com and follow the instructions. You will need your 16-digit control number that appears on your VIF or in the email you received.
		Phone: Call 1-800-474-7493 (English) (toll free in Canada), 1-800-474-7501 (French) (toll free in Canada) or 1-800-454-8683 (toll free in the U.S.). You will need your 16-digit control number that appears on your VIF or in the email you received. If you vote by phone, you will not be able to appoint anyone other than the persons named by management on your VIF as your proxyholder. Therefore, if you wish to appoint someone else as your proxyholder to attend the Meeting, this voting method is not recommended.
		Mail: Complete and return your VIF in the prepaid envelope provided.

Your duly completed VIF must be received by TSX Trust or your intermediary, as applicable, or you must have voted on the internet, by phone, by fax or by email, as applicable, by no later than 10:00 a.m. (Eastern Daylight Time) on September 8, 2025 or such other deadline your intermediary may fix or, if the Meeting is adjourned or postponed, 10:00 a.m. (Eastern

Daylight Time) on the business day prior to the day fixed for the adjourned or postponed meeting. Please contact your intermediary to ensure you do not miss your applicable voting deadline. If you elect to vote on the internet or by phone, you do not need to return your VIF.

When completing your VIF, make sure to indicate the name of the person you wish to appoint as your proxyholder to attend the Meeting on your behalf or leave the space for the appointment blank if you wish to appoint the persons named by management. In both cases, it is recommended to indicate how you wish to vote for each item to be voted on, otherwise your proxyholder will have the discretion to vote as he or she sees fit. If you appoint a proxyholder who is not the persons named by management, once your form is submitted, please contact, or ask your proxyholder to contact, TSX Trust by phone at 1-866-751-6315 (toll free in Canada and the U.S.) or 1-416-682-3860, or complete the online form available at www.tsxtrust.com/control-number-request, by no later than 10:00 a.m. (Eastern Daylight Time) on September 8, 2025 in order to register your proxyholder and provide an email address at which TSX Trust will send a 13-digit proxyholder control number for your proxyholder to be able to join the Meeting. Proxyholder control numbers will be distributed by TSX Trust 24 to 48 hours before the Meeting. Without a proxyholder control number, your proxyholder will be unable to join the Meeting and if your proxyholder does not join the Meeting, your voting rights will not be exercised, as your proxyholder is required to attend the Meeting for them to be exercised.

Option 2 – Attending and Voting at the Meeting

As we do not have access to the names or holdings of our non-registered shareholders, if you wish to attend and vote at the Meeting or to appoint someone else to do so on your behalf, you must follow the following two steps:

Step 1: Submit to TSX Trust or your intermediary, as applicable, your voting instructions and appoint yourself or another person (who need not be a shareholder) as your proxyholder before the Meeting by inserting your name or such other person’s name in the space provided for such purpose. Although optional for shareholders who intend to attend the Meeting or have someone else attend it on their behalf, it is recommended to also specify how you wish to vote for each item to be voted on, otherwise your proxyholder will have the discretion to vote as he or she sees fit. Please refer to the section entitled “Option 1 – Voting by Proxy Prior to the Meeting (Voting Instruction Form)” earlier for further details on how to submit your voting instructions. Voting by phone is not recommended as it is not possible to appoint someone else than the persons named by management as proxyholder by phone. TSX Trust or your intermediary, as applicable, must receive your instructions by no later than 10:00 a.m. (Eastern Daylight Time) on September 8, 2025 or such other deadline your intermediary may fix for your proxyholder’s appointment to be effective. Please contact your intermediary to ensure you do not miss your applicable voting deadline.

Important Note: U.S. non-registered shareholders who are not ESPP Participants and who wish to appoint themselves or a proxyholder must obtain a legal proxy form from their intermediary and submit it to TSX Trust by no later than 10:00 a.m. (Eastern Daylight Time) on September 8, 2025.

Step 2: Once your voting instructions or legal proxy form has been submitted, contact, or ask your proxyholder to contact, TSX Trust by phone at 1-866-751-6315 (toll free in Canada and the U.S.) or 1-416-682-3860, or complete the online form available at www.tsxtrust.com/control-number-request, by no later than 10:00 a.m. (Eastern Daylight Time) on September 8, 2025 in order to register yourself or your proxyholder and provide an email address at which TSX Trust will send a 13-digit proxyholder control number to be able to join the Meeting. Proxyholder control numbers will be distributed by TSX Trust 24 to 48 hours before the Meeting. Intermediaries do not provide proxyholder control numbers. Therefore, shareholders who appointed themselves or someone else as their proxyholder through their intermediary must still contact TSX Trust thereafter.

Once these two steps are completed and a proxyholder control number is received from TSX Trust, you or your proxyholder will be able to attend the Meeting online at meetings.lumiconnect.com/400-353-766-264 by selecting the option “I have a login” and entering the proxyholder control number in the space provided for the control number and “alithya2025” (case sensitive) as password.

Without a proxyholder control number, you or your proxyholder will not be able to attend the Meeting as a shareholder and will only be able to view the Meeting as a guest, which will not entitle you or your proxyholder to vote or ask any questions. If you do not complete the above two steps by 10:00 a.m. (Eastern Daylight Time) on September 8, 2025, you will not be able to obtain a proxyholder control number. The control number appearing on your VIF is NOT a proxyholder control number and may therefore not be used to attend the Meeting.

How to Complete your Form and How Your Shares Will Be Voted

You can choose to vote FOR or WITHHOLD on the items to be voted on.

When you vote by proxy prior to the Meeting, you may appoint either the persons named by management as your proxyholder (namely, the Chair of the Board of Directors (the “Board”) or the President and Chief Executive Officer of the Company) or you may appoint someone else to represent you at the Meeting and vote on your behalf. You have the right to appoint any other person (who need not be a shareholder) to attend and act on your behalf at the Meeting. That right may be exercised by writing the name of such person in the space provided for such purpose in your form of proxy or VIF.

If you do not intend to attend the Meeting or be represented at the Meeting, you may appoint the persons named by management to represent you at the Meeting and complete your form completely by indicating how you wish to vote for each item to be voted on. If you leave the section for the appointment of your proxyholder blank, you will be deemed having appointed the persons named by management as your proxyholder.

If you intend to attend the Meeting or have someone else than the persons named by management represent you as your proxyholder at the Meeting and vote on your behalf, although you could only indicate your name or the name of such other person in the space provided on your VIF and submit it without

indicating how you wish to vote for each item to be voted on, it is still recommended to complete your form and indicate how you wish to vote for each item.

If you have NOT specified how you wish your proxyholder to vote on a particular matter at the Meeting, your proxyholder will be entitled to vote your Shares as he or she sees fit or, in the case of the Chair of the Board or the President and Chief Executive Officer of the Company, your vote will be exercised as follows:

The proxy confers discretionary authority in respect of amendments to any of the foregoing matters and such other matters as may properly come before the Meeting. Management is not aware of any such amendments or of other matters to be submitted at the Meeting.

If you appointed a proxyholder other than the persons named by management to represent you at the Meeting and vote on your behalf, please make sure your proxyholder obtains his or her proxyholder control number and joins the Meeting, otherwise your voting rights will not be exercised, as your proxyholder is required to attend the Meeting for them to be exercised.

Voting at the Meeting

Registered shareholders who voted prior to the Meeting and who decide to attend the Meeting using their control number do not need to vote again using the voting buttons appearing on their screen during the Meeting. If they vote again at the Meeting, their vote will, however, be taken into account and replace their vote transmitted before the Meeting.

Proxyholders (including non-registered shareholders who appointed themselves as proxyholder and third parties who were appointed as proxyholders by registered shareholders or non-registered shareholders) do not have to vote again at the Meeting if the shareholder they represent already indicated on his, her or its VIF how they wish to vote. They may, however, if they wish, vote at the Meeting by voting in accordance with the voting instructions of the shareholder they represent or as they see fit, if the shareholder they represent has not indicated how to vote. If the shareholder who is represented by a proxyholder indicated how to vote for each item through voting instructions submitted prior to the Meeting and the proxyholder votes differently at the Meeting, the proxyholder’s vote will automatically be changed to follow the shareholder’s voting instructions submitted prior to the Meeting once the Meeting will have ended and the votes are compiled by the scrutineers.

Changing your Vote

If you change your mind about how you want to vote your Shares, you can revoke your proxy by any of the methods outlined below, or by any other means permitted by law.

Registered shareholders may change their vote by:

Non-registered shareholder may change their vote by:

Although proxyholders (including non-registered shareholders who appointed themselves as proxyholder and third parties who were appointed as proxyholder by registered shareholders and non-registered shareholders) could vote differently at the Meeting using the online voting buttons, please note that if such votes differ from the last voting instructions processed by TSX Trust or their intermediary before the proxy voting deadline of 10:00 a.m. (Eastern Daylight Time) on September 8, 2025 or such other deadline their intermediary may fix, the vote of the proxyholder will automatically be modified once the Meeting will have ended and the votes are compiled to reflect the last voting instructions received from the shareholder before such deadline.

Conduct at the Meeting & Asking Questions

The Company’s by-laws describe the requirements for the Meeting and the Chair of the Meeting will conduct the meeting consistent with those requirements. As such, we will strictly follow the items to be covered at the Meeting and which are set forth in the section entitled “Business of the Meeting” of this Information Circular.

Shareholders and guests will be able to join the Meeting on the day of the Meeting at meetings.lumiconnect.com/400-353-766-264. For a better experience, it is recommended to use a high-speed internet connection and the latest version of Chrome, Safari, Edge or Firefox. Internet Explorer is not supported. It is

also recommended to ensure your browser is compatible by trying to log in at least 15 minutes before the Meeting.

Only registered shareholders and duly appointed and registered proxyholders will be eligible to vote while participating at the Meeting. Registered shareholders should use their 13-digit control number appearing on their form of proxy and non-registered shareholders should use their 13-digit proxyholder control number received by email from TSX Trust.

The voting polls will be open during the formal part of the Meeting. The Chair of the Meeting will indicate the time of opening and closure of the polls for the items to be voted on. Voting options will be visible on your screen and you will simply have to select your voting option. Your choice will be highlighted.

During the Meeting, only registered shareholders and duly appointed and registered proxyholders who have joined the Meeting using their 13-digit control number or proxyholder control number will have the opportunity to ask questions by typing and submitting questions through the field available for such purpose, and it will only be possible to submit questions in writing.

Guests and non-registered shareholders who did not appoint themselves as proxyholder by the 10:00 a.m. (Eastern Daylight Time) voting deadline on September 8, 2025 will not be able to log in to the Meeting and submit questions or vote at the Meeting. They will only be able to join the audio webcast as guests.

It is recommended that shareholders send their question as soon as possible during the Meeting so that these can be addressed at the appropriate time. Questions relating to matters to be voted on will be addressed by the Chair of the Meeting and other members of management present at the Meeting before those items are voted on while general questions will be addressed at the end of the Meeting, after the adjournment of the formal business of the Meeting and management’s presentation about the Company’s business.

To respect both time constraints and other shareholders, when submitting questions, shareholders are asked to be brief and as much to the point as possible. To allow us to answer questions from as many shareholders as possible, shareholders and proxyholders are kindly asked to cover only one topic per question. Questions from multiple shareholders on the same topic or that are otherwise related may be grouped, summarized and answered together.

All shareholder questions are welcome, but conducting the business set out in the Meeting’s agenda for the benefit of all shareholders will be paramount. The Company does not intend to address any questions that are, among other things:

If there are any matters of individual concern to a shareholder and not of general concern to all shareholders or if a question asked was not otherwise answered, such matters may be raised separately after the Meeting by contacting the Company’s Corporate Secretary at secretariat@alithya.com.

The Company is committed to offering a forum where, to the fullest extent possible using available electronic solutions, shareholders may communicate adequately through the course of the Meeting.

For assistance with your control number to join the Meeting, please contact TSX Trust at 1-800-387-0825. For live technical assistance in operating the Meeting platform and voting, please contact Lumi at support-ca@lumiglobal.com.

In the event of technical malfunction or other significant problem that disrupts the Meeting, the Chair of the Meeting may adjourn, recess, or expedite the Meeting, or take such other action that the Chair determines is appropriate considering the circumstances.

An audio webcast playback will be available on the Company’s website in the Investors section after the Meeting.

Proxy Solicitation

The solicitation of proxies by management is being made primarily by mail, but directors, officers or employees of the Company may also solicit proxies at a nominal cost. The Company does not intend to retain the services of a proxy advisory firm for the solicitation of proxies.

Transfer Agent

You can contact TSX Trust, the Company’s transfer agent, either by mail at 1700 – 1190 des Canadiens-de-Montreal Avenue, Montreal, Quebec, H3B 0G7, by telephone at 1-800-387-0825, by fax at 1-888-249-6189, or by email at shareholderinquiries@tmx.com.

Authorized Share Capital

The authorized share capital of the Company consists of (i) an unlimited number of subordinate voting shares, without par value, which are listed under the symbol ALYA on the Toronto Stock Exchange (“TSX”), (ii) an unlimited number of multiple voting shares, without par value, which are held by a limited number of holders, except that no further multiple voting shares can be issued, except pursuant to the exercise of options to purchase multiple voting shares that were issued and outstanding as at November 1, 2018, and (iii) an unlimited number of preferred shares, without par value, issuable in series. On January 1, 2025, in connection with an internal reorganization, the Company amended its articles to create two series of preferred shares, each consisting of an unlimited number of shares: the Series A preferred shares and the Series B preferred shares. As at July 14, 2025, 92,653,272 subordinate voting shares, 7,326,880 multiple voting shares and no preferred shares were issued and outstanding.

The following summary of the material features of the Company’s authorized share capital is given subject to the detailed provisions of its articles.

VOTING RIGHTS

Each subordinate voting share entitles its holder to one vote per share, and each multiple voting share entitles its holder to ten votes per share at any meeting of shareholders, other than meetings at which only the holders of a particular class or series of shares are entitled to vote due to statutory provisions or the specific attributes of this class or series. If and when issued, preferred shares will have such voting rights as may be determined by the Board at the time of issuance thereof. Subject to the provisions of the Business Corporations Act (Québec) or

as otherwise provided in the Company’s articles, the Series A preferred shares and Series B preferred shares are not entitled to receive notice of, nor to attend or vote at, meetings of the shareholders of the Company.

The subordinate voting shares are “restricted securities” within the meaning of such term under applicable Canadian securities laws in that they do not carry equal voting rights with the multiple voting shares. In the aggregate, all voting rights associated with the subordinate voting shares represented, as at July 14, 2025, 55.84% of the voting rights attached to all issued and outstanding Shares.

RIGHTS TO DIVIDENDS AND RIGHTS UPON WINDING-UP AND DISSOLUTION

Subject to the prior rights of holders of preferred shares which rank prior to subordinate voting shares and multiple voting shares, if and when issued, holders of subordinate voting shares and multiple voting shares are entitled to receive pari passu any dividends and the remainder of the Company’s property in the event of a voluntary or involuntary winding-up or dissolution, or any other distribution of assets among shareholders for the purposes of winding up the Company’s affairs.

The holders of Series A preferred shares and Series B preferred shares are entitled to receive, as and when declared by the Board, in preference and priority to any payment of distributions on the subordinate voting shares and the multiple voting shares and over any other shares of any other class ranking junior to the Series A preferred shares and Series B preferred shares, pari passu with the holders of each series of preferred shares, non-cumulative preferential dividends.

In the event of a voluntary or involuntary liquidation, dissolution or winding up of the Corporation or any other distribution of assets among shareholders for the purposes of winding up the Company’s affairs, the holders of Series A preferred shares and Series B preferred shares are entitled to receive for each Series A or Series B preferred share, as applicable, in preference and priority to any distribution of the property of the Company to the holders of subordinate voting shares and multiple voting shares or to any other shares of any other class ranking junior to the Series A or Series B preferred shares, as applicable, but pari passu with the holders of each series of preferred shares, an amount equal to the Series A or Series B Preferred Redemption Price (as defined in Section C paragraph 6.1 of the Company’s articles) plus all declared and unpaid dividends

thereon, but shall not be entitled to share any further in the distribution of the property of the Company.

CONVERSION RIGHTS

Multiple voting shares are, at the holder’s entire discretion, convertible into subordinate voting shares on a share for share basis and shall be automatically converted upon their transfer to a person who is not a Permitted Holder (as defined below) or upon the death of a Permitted Holder, unless acquired by any of the remaining Permitted Holders in accordance with the terms of the voting agreement dated November 1, 2018 entered into between the Permitted Holders (the “Voting Agreement”), a copy of which is available on SEDAR+ at www.sedarplus.ca and on EDGAR at www.sec.gov. For further information on the Voting Agreement, please refer to the section entitled “Principal Shareholders” below. The multiple voting shares are not convertible into any other class of shares. Under applicable Canadian laws, an offer to purchase multiple voting shares would not necessarily require that an offer be made to purchase subordinate voting shares. However, as indicated above, multiple voting shares shall be automatically converted into subordinate voting shares on a share for share basis upon their transfer to a person who is not a Permitted Holder. A “Permitted Holder” means each of Paul Raymond,

Ghyslain Rivard and Pierre Turcotte, and the entities over which they have control.

If and when issued, preferred shares will have such conversion rights as may be determined by the Board at the time of issuance thereof. The Series A and Series B preferred shares are not convertible into, or exchangeable for, any other class of shares of the Company.

RESTRICTIONS ON TRANSFER

Subject to the terms of the Voting Agreement, Permitted Holders cannot sell or otherwise transfer multiple voting shares to a person who is not a Permitted Holder, unless they first convert those shares into subordinate voting shares on a share for share basis, and then transfer such subordinate voting shares.

Normal Course Issuer Bid

On September 13, 2023, the Company announced the renewal of its normal course issuer bid (the “NCIB”) in order to purchase for cancellation up to 2,411,570 subordinate voting shares, representing 5% of the Company’s public float as of the close of markets on September 7, 2023. Purchases for cancellation under the NCIB commenced on September 20, 2023 and ended on September 19, 2024. Purchases were made on the open market through the facilities of the TSX. The Company did not renew its NCIB following September 19, 2024.

Four items will be covered at the Meeting:

Financial Statements

The Annual Financial Statements and the auditor’s report thereon are available on our website at www.alithya.com, on SEDAR+ at www.sedarplus.ca, in the Company’s annual report on Form 40-F available on EDGAR at www.sec.gov, and in print, free of charge, to any shareholder who requests a copy to the Company by email at secretariat@alithya.com, or by mail at Corporate Secretariat, Alithya Group inc., 700, René-Lévesque West Blvd, Suite 400, Montréal, Québec, H3B 1X8, or by phone at 1-844-985-5552.

Election of Directors

The Board may consist of not less than three and not more than 15 directors. The Board has fixed at eight the number of directors to be elected at the Meeting. The persons named in the section entitled “Nominees for Election to the Board” of this Information Circular (“Nominee Directors”) are currently directors of the Company and were elected at the last meeting of shareholders. The Nominee Directors are, in the opinion of the Board and management, well qualified to act as directors of the Company for the ensuing year and have confirmed their willingness to serve as directors.

Unless otherwise indicated, the persons designated by management will vote FOR the election of the persons in the section entitled “Nominees for Election to the Board” of this Information Circular.

Appointment of the Auditor

The Board, on the recommendation of the Audit and Risk Management Committee (the “Audit Committee”), recommends that KPMG LLP (“KPMG”) be reappointed to serve as the Company’s auditor until the next annual meeting of shareholders. KPMG was first appointed as the Company’s auditor on September 15, 2021.

PRE-APPROVAL POLICY FOR EXTERNAL AUDITOR SERVICES

The Audit Committee has adopted procedures for the pre-approval of engagement for services of its external auditor,

which require pre-approval of all audit and non-audit services provided by the external auditor. The Audit Committee also recommends to the Board, and the Board approves, on an annual basis, the fees to be charged to the Company by the external auditor. For more details on the Company’s pre-approval policy and procedures, please refer to the section entitled “Audit and Risk Management Committee – Pre-approval Policy and Procedures” of the Company’s annual information form dated June 12, 2025, which is hereby incorporated by reference.

EXTERNAL AUDITOR SERVICE FEE

KPMG is the external auditor who prepared the report relating to the audit of the Company’s annual consolidated financial statements for fiscal 2025 and notes thereto, presented under the International Financial Reporting Standards.

For fiscal 2025 and 2024, the following fees were billed by KPMG:

Unless otherwise indicated, the persons designated by management will vote FOR the appointment of KPMG as the auditor of the Company and authorizing the Board to fix their compensation.

Other Business

Following the conclusion of the business to be conducted at the Meeting, shareholders will be invited to ask questions. Management is not aware of any changes to the foregoing items or of other matters to be submitted at the Meeting. If, however, there are changes or new items that properly come before the Meeting, your proxyholder will have the authority to vote your Shares on these items as he or she sees fit.

 André P. Brosseau⁽⁵⁾, Québec, Canada

To the knowledge of the Company and based upon information provided to it by the Company’s Nominee Directors, no Nominee Director (including any personal holding company), is or has been, in the last ten years, a director, chief executive officer or chief financial officer of a company (including Alithya) that: (a) was the subject of a cease trade or similar order or an order that denied the relevant company access to any exemption under securities legislation for a period of more than 30 consecutive days while the director or executive officer was acting in that capacity; or (b) was the subject of a cease trade or similar order or an order that denied the relevant company access to any exemption under securities legislation for a period of more than 30 consecutive days that was issued after the director or executive officer ceased to act in that capacity, but which resulted from an event that occurred while the director or executive officer was acting in that capacity.

Other than as disclosed below, to the knowledge of the Company and based upon information provided to it by the Company’s Nominee Directors, no Nominee Director (including any personal holding company): (a) is, or has been in the last ten years, a director or executive officer of a company (including Alithya) that, while that Nominee Director was acting in that capacity, or within a year of that Nominee Director ceasing to act in that

capacity, became bankrupt, made a proposal under any legislation relating to bankruptcy or insolvency or was subject to or instituted any proceedings, arrangement or compromise with creditors or had a receiver, receiver manager or trustee appointed to hold its assets; or (b) has, in the last ten years, become bankrupt, made a proposal under any legislation relating to bankruptcy or insolvency, or become subject to or instituted any proceedings, arrangement or compromise with creditors, or had a receiver, receiver manager or trustee appointed to hold their assets. Ghyslain Rivard was a director of Facilis Inc. (“Facilis”) from November 1, 2021 to March 8, 2023. On March 8, 2023, Facilis initiated bankruptcy proceedings and a trustee was appointed to hold its assets.

To the knowledge of the Company and based upon information provided to it by the Company’s directors, no Nominee Director (including any personal holding company) has been subject to: (a) any penalties or sanctions imposed by a court relating to securities legislation or by a securities regulatory authority or has entered into a settlement agreement with a securities regulatory authority; or (b) any other penalties or sanctions imposed by a court or regulatory body that would likely be considered important to a reasonable securityholder in deciding whether to vote for a Nominee Director.

The compensation program of the Board is designed to align the interests of directors with the long-term interests of the Company’s shareholders and aims at providing fair, reasonable and competitive total compensation required to attract and retain experienced and competent directors.

To assist in determining the appropriate compensation for members of the Board, the Human Capital and Compensation Committee (the “Compensation Committee”) reviews competitive practices from time to time with the assistance of independent compensation consultants as discussed in the section entitled “Compensation Discussion and Analysis – Executive Compensation Framework – Compensation Review Process – Compensation Consultant”.

For fiscal 2025, the Compensation Committee, retained the services of Willis Towers Watson (“WTW”), as compensation consultant, to conduct a review of the Board’s compensation to assess the competitiveness of its compensation policy, including a review of its comparator group.

Following such review process, a new comparator group was selected to be used for the review of director compensation for

fiscal 2025 and the Compensation Committee recommended, and the Board approved, changes effective for the fiscal year ending March 31, 2025 (“fiscal 2025”). The changes principally aimed at progressively adjusting the directors’ total compensation with the median of the new comparator group over the next three years, from fiscal 2025 to 2027, to ensure compensation competitiveness.

For an overview of the Company’s structure of compensation and Board retainers as well as a list of the companies comprised in the comparator group, please refer to the section entitled “Structure of Compensation” below.

Any director who is also an employee of the Company or of any of its affiliates does not receive any compensation as a director. As such, this section excludes the compensation earned by Paul Raymond who is also the President and Chief Executive Officer of the Company. For information regarding the compensation of Mr. Raymond, please refer to the section entitled “Compensation Discussion and Analysis – Executive Compensation Framework – Compensation of the NEOs”.

The compensation of the directors is structured as an all-inclusive annual retainer payable in cash (“Cash-Based Component”) and in share-based awards in the form of deferred share units (“DSUs”) (“Share-Based Component”). The Cash-Based Component varies based on role(s) held by the directors on the Board (e.g. chairing the Board or a committee and/or being a committee member), while the Share-Based Component is fixed. For fiscal 2025, the Share-Based Component was increased from $50,000 to $60,000 for all directors, except the Chair of the Board whose Share-Based Component was increased from $90,000 to $100,000. The Cash-Based Component remained the same at $45,000 for all directors and $85,000 for the Chair of the Board. This flat-fee approach is consistent with compensation trends, adds predictability to compensation paid to directors, and is simpler to administer. Until a director has achieved his or her minimum share ownership requirement, 50% of his or her annual Cash-Based Component is paid in DSUs.

Directors are also reimbursed for reasonable travel and other out-of-pocket expenses incurred for attendance at Board and committee meetings.

Comparator Group

For fiscal 2025, the Compensation Committee selected a new comparator group which was used for the review of director compensation. Such comparator group is comprised of 26 companies: 12 Canadian companies and 14 U.S. companies; all publicly listed, with an operating business model similar to Alithya, operating in the IT consulting services or other services with an operating segment in IT consulting and services.

Based on the Company’s footprint and operations, the new comparator group is composed of the following companies:

Annual Retainer

The following table shows the Cash-Based Component and the Share-Based Component of the annual retainer of all directors for fiscal 2025:

In addition to the Share-Based Component of their annual retainer, directors may, subject to the Director Share Ownership Requirement (as defined below), prior to the beginning of each calendar year, elect to receive all or part of the Cash-Based Component of their annual retainer either in cash, in DSUs issued pursuant to the Company’s Long Term Incentive Plan (the “LTIP”), or a combination of both.

DSUs are credited to each director’s account on the last day of each quarter and the number to be credited is calculated by dividing the dollar amount to be received in DSUs for such quarter by the closing price of the subordinate voting share on the TSX, on the last trading day immediately preceding the date

of grant. Each DSU entitles the beneficiary thereof to receive upon resignation, retirement or death, one subordinate voting share of the Company. Each director has an account where DSUs are credited and held until the director leaves the Board.

The issuance of DSUs to directors is considered a key component to enhance the Company’s ability to attract and retain talented individuals to serve as members of the Board, to promote alignment of interests between directors and the Company’s shareholders and to assist directors in fulfilling the Director Share Ownership Requirement.

Detailed information on the LTIP is included in Schedule A of this Information Circular.

The directors of the Company play a central role in enhancing shareholder value and are therefore required to acquire and maintain a certain level of ownership in the Company in accordance with the Company’s minimum share ownership requirement for directors (the “Director Share Ownership Requirement”). Such policy was adopted to better align the directors’ economic interests with those of shareholders. The Director Share Ownership Requirement is three times the Cash-Based Component of their annual retainer, regardless of whether it is paid in cash or in DSUs, which shall be reached within a five-year period starting on the later of July 1, 2021 and their election or appointment on the Board.

To assess the Director Share Ownership Requirement, Shares and vested equity grants such as DSUs are valued at the greater of (i) the price of the subordinate voting shares at the time those

Shares or DSUs were acquired and (ii) the market value of the Shares or DSUs using the average closing price of the subordinate voting shares on the TSX for the five trading days preceding the date on which the share ownership level is assessed.

Alithya securities held to comply with the Director Share Ownership Requirement shall not be, during the directors’ tenure, the object of specific monetization procedures or other hedging procedures to reduce the exposure related to their ownership.

Directors may elect to receive up to 100% of the Cash-Based Component of their annual retainer in DSUs. Until they meet the Director Share Ownership Requirement, directors are required to receive at least 50% of the Cash-Based Component of their annual retainer in DSUs.