Constellation Software Inc.
Notice of Annual Meeting of Shareholders
To Be Held On May 15, 2026

Notice is hereby given that the annual meeting (the “Meeting”) of the holders of common shares (“Common Shares”) of Constellation Software Inc. (“CSI” or the “Corporation”) will be conducted as a hybrid meeting to be held via live video webcast online at https://meetnow.global/MMT5Q4H and in person at Delta Hotels Toronto, 75 Lower Simcoe Street, Toronto, Ontario, M5J 3A6 on May 15, 2026 at 8:30 a.m. (Eastern Time) for the following purposes:

(a) to receive the financial statements for the year ended December 31, 2025 and the auditors’ report thereon;
(b) to elect directors;
(c) to re-appoint KPMG LLP as auditors for the ensuing year and to authorize the directors to fix their remuneration;
(d) to consider and vote on an advisory resolution on CSI’s approach to executive compensation, and;
(e) to transact such other business as may properly come before the meeting or any adjournment thereof.

The management information circular (the “Circular”) describes the business to be conducted at the Meeting and also describes the Corporation’s governance practices. A holder of Common Shares of record at the close of business on April 2, 2026 will be entitled to vote at the Meeting.

Attending the Meeting In Person: The Meeting will have a physical meeting location at Delta Hotels Toronto, 75 Lower Simcoe Street, Toronto, Ontario, M5J 3A6, with in-person attendance. Registered shareholders and duly appointed proxyholders will be able to vote at the in person Meeting. Non-registered shareholders who have not duly appointed themselves as a proxyholder will not be able to vote at the in person Meeting. Individuals who plan to attend the Meeting in person are requested to register in advance by May 8, 2026 online at https://cvent.me/mRQ94A. This registration is to assist the Corporation in tracking the number of in person Meeting attendees and is in addition to, and not a substitute for, the appointment of a proxyholder. The Circular provides important and detailed instructions about how to appoint a proxyholder.

Attending the Meeting via Live Video Webcast: The Meeting will also permit registered shareholders and duly appointed proxyholders to participate virtually via live webcast online at https://meetnow.global/MMT5Q4H. Registered shareholders and duly appointed proxyholders will be able to virtually attend the Meeting, ask questions and vote, all in real time, provided they are connected to the Internet and comply with all of the requirements set out in the Circular. Non-registered shareholders who have not duly appointed themselves as a proxyholder will be able to virtually attend the Meeting as guests and ask questions, but guests will not be able to vote at the Meeting. The Circular provides important and detailed instructions about how to participate virtually at the Meeting.

We hope that hosting a hybrid Meeting will enable greater participation by our shareholders by allowing shareholders who might not otherwise be able to travel to a physical meeting to attend online.

A shareholder who wishes to appoint a person other than the management nominees identified on the form of proxy or voting instruction form (including a non-registered shareholder who wishes to appoint themselves to attend) must carefully follow the instructions in the Circular and on their form of proxy or voting instruction form. These instructions include the additional step of registering such proxyholder with our transfer agent, Computershare Investor Services Inc., after submitting their form of proxy or voting instruction form. Failure to register the proxyholder with our transfer agent will result in the proxyholder not receiving an invite code to vote in the virtual Meeting and only being able to attend as a guest.

If unable to attend the Meeting, a registered shareholder may submit his or her proxy by mail, by facsimile, by telephone or over the Internet in accordance with the instructions below.

A non-registered shareholder should follow the instructions included on the voting instruction form provided by his or her Intermediary.

Voting by Mail Before the Meeting. A registered shareholder may submit his or her proxy by mail by completing, dating and signing the enclosed form of proxy and returning it using the envelope provided or otherwise to the attention of the Proxy Department of Computershare Investor Services Inc. at 320 Bay Street, 14th Floor, Toronto, Ontario, M5H 4A6.

Voting by Facsimile Before the Meeting. A registered shareholder may submit his or her proxy by facsimile by completing, dating and signing the enclosed form of proxy and returning it by facsimile to Computershare Investor Services Inc. at (416) 263-9524 or toll free (within North America) at (866) 249-7775.

Voting by Telephone Before the Meeting. A registered shareholder may vote by telephone by calling toll free 1-866-732-VOTE (8683) or from outside of North America by calling (312) 588-4290 and following the instructions provided. Shareholders will require the 15 digit control number (located on the front of the proxy) to identify themselves to the system.

Voting by Internet Before the Meeting. A registered shareholder may vote over the Internet by going to www.investorvote.com and following the instructions. Such shareholder will require the 15 digit control number (located on the front of the proxy) to identify themselves to the system.

To be effective, a proxy must be received by Computershare Investor Services Inc. no later than 8:30 a.m. (Eastern Time) on May 13, 2026 or, if the Meeting is adjourned, 48 hours (Saturdays, Sundays and holidays excepted) prior to the time of holding the Meeting.

The Corporation has elected to use the notice-and-access provisions under National Instrument 54-101 – Communication with Beneficial Owners of Securities of a Reporting Issuer ("NI 54-101") and National Instrument 51-102 – Continuous Disclosure Obligations ("NI 51-102" and together with NI 54-101, the "Notice-and-Access Provisions") for the Meeting. The Notice-and-Access Provisions are a set of rules developed by the Canadian Securities Administrators that allow issuers to post electronic versions of proxy-related materials on-line, via the System for Electronic Document Analysis and Retrieval ("SEDAR+") and one other website, rather than mailing paper copies of such materials to securityholders.

Electronic copies of this Notice of Annual Meeting of Shareholders, the Circular, the Corporation’s management’s discussion and analysis of the results of operations and financial condition of the Corporation for the year ended December 31, 2025 and the audited consolidated financial statements of the Corporation and accompanying notes for the year ended December 31, 2025 together with the auditor’s report thereon (the “2025 MD&A and Financials”) may be found on SEDAR+ at www.sedarplus.com and also on the Corporation’s website at www.csisoftware.com.

Shareholders are reminded to review the Circular before voting.

Shareholders will receive paper copies of a notice package (the “Notice Package”) via prepaid mail containing a notice with information prescribed by NI 54-101 and a form of proxy (if you are a registered shareholder) or a voting instruction form (if you are a non-registered shareholder).

The Corporation will not use procedures known as ‘stratification’ in relation to the use of Notice-and-Access Provisions. Stratification occurs when an issuer using Notice-and-Access Provisions sends a paper copy of the Circular to some securityholders with a Notice Package.

Shareholders may obtain paper copies of the Circular and the 2025 MD&A and Financials free of charge by calling the following numbers and using the control number that appears on the form of proxy or voting instructions form.

For holders with a 15 digit control number: Request materials by calling Toll Free, within North America - 1-866-962-0498 or direct, from Outside of North America - 1-514-982-8716 and entering your control number as indicated on your proxy or voting instruction form.

For holders with a 16 digit control number: Request materials by calling Toll Free, within North America - 1-877-907-7643 or outside of North America - 1-303-562-9305.

Any shareholder wishing to obtain a paper copy of the meeting materials should submit their request no later than May 1, 2026 in order to receive paper copies of the meeting materials in time to vote before the Meeting. Shareholders may contact Computershare Toll Free at 1-866-964-0492 or www.computershare.com/noticeandaccess to obtain more information about the Notice-and-Access Provisions. Under the Notice-and-Access Provisions, meeting materials will be available for viewing on the Corporation’s website for one year from the date of posting.

DATED March 28, 2026

By Order of the Board

John Billowits
Chairman

CONSTELLATION SOFTWARE INC.

MANAGEMENT INFORMATION CIRCULAR FOR THE ANNUAL MEETING OF SHAREHOLDERS TO BE HELD ON MAY 15, 2026

SOLICITATION OF PROXIES

This management information circular (the “Circular”) dated as of March 28, 2026 and accompanying form of proxy are furnished in connection with the solicitation, by management of Constellation Software Inc. (“CSI” or the “Corporation”), of proxies to be used at the annual meeting of shareholders of the Corporation (the “Meeting”) referred to in the accompanying Notice of the Annual Meeting of Shareholders (the “Notice”) to be held on May 15, 2026, at the time and place and for the purposes set forth in the Notice. The solicitation will be made primarily by mail, subject to the use of Notice-and-Access Provisions (as defined below) in relation to delivery of the meeting materials, but proxies may also be solicited personally or by telephone by directors and/or officers of the Corporation, or by the Corporation’s transfer agent, Computershare Investor Services Inc. (“Computershare”), at nominal cost. The cost of solicitation by management will be borne by the Corporation. Pursuant to National Instrument 54-101 Communication with Beneficial Owners of Securities of a Reporting Issuer (“NI 54-101”), arrangements have been made with clearing agencies, brokerage houses and other financial intermediaries to forward proxy solicitation material to the beneficial owners of the common shares of the Corporation (“Common Shares”). The cost of any such solicitation will be borne by the Corporation.

MEETING INFORMATION

The Meeting will be held on May 15, 2026 at 8:30 am (Eastern Time) and will have a physical meeting location (Delta Hotels Toronto, 75 Lower Simcoe Street, Toronto, Ontario, M5J 3A6) with in-person attendance, but the Meeting will also permit registered shareholders, duly appointed proxyholders and guests to attend and participate virtually via live webcast online at https://meetnow.global/MMT5Q4H. Please see “How do I Attend and Participate at the Meeting?” for additional details.

The Meeting is scheduled to begin at 8:30 am (Eastern Time) and will follow the meeting of shareholders of Topicus.com Inc., scheduled to begin at 8:00 am (Eastern Time), and Lumine Group Inc., scheduled to begin at 8:15 am (Eastern Time). If the Topicus.com Inc. and Lumine Group Inc. meetings of shareholders run longer than anticipated, the Meeting may begin after the scheduled start time. We encourage shareholders to join the Meeting in advance of the scheduled 8:30 am (Eastern Time) start time and, for those joining the virtual Meeting, to remain logged in until the live video webcast begins. We hope that hosting a hybrid Meeting will enable greater participation by our shareholders by allowing shareholders who might not otherwise be able to travel to a physical meeting to attend online.

Registered shareholders and duly appointed proxyholders who participate at the Meeting online will be able to listen to the Meeting, ask questions and vote, all in real time, provided they are connected to the Internet and comply with all of the requirements set out below under “Voting at the Meeting”. Non-registered holders who have not duly appointed themselves as proxyholders may still attend the Meeting in-person and online as guests. Guests will be able to listen to the Meeting and ask questions but will not be able to vote at the Meeting. See “Voting at the Meeting” below.

VOTING BEFORE THE MEETING

Appointment and Revocation of Proxies

The persons named in the form of proxy are directors and/or officers of the Corporation. Each shareholder has the right to appoint a person, who need not be a shareholder of the Corporation, other than the persons named in the form of proxy, to represent such shareholder at the Meeting or any adjournment thereof. Such right may be exercised by inserting such person's name in the blank space provided in the form of proxy or by completing another proper form of proxy. The additional registration step outlined below under “Voting at the Meeting – Appointment of a Third Party as Proxy” must also be followed. All proxies must be executed by the shareholder or his or her attorney duly authorized in writing or, if the shareholder is a corporation, by an officer or attorney thereof duly authorized. A registered shareholder may submit his or her proxy by mail, by facsimile, by telephone or over the Internet in accordance with the instructions below.

A non-registered shareholder should follow the instructions included on the voting instruction form provided by his or her Intermediary (as defined below).

Voting by Mail Before the Meeting. A registered shareholder may submit his or her proxy by mail by completing, dating and signing the form of proxy and returning it using the envelope provided or otherwise to the attention of the Proxy Department of Computershare Investor Services Inc. at 320 Bay Street, 14th Floor, Toronto, Ontario, M5H 4A6.

Voting by Facsimile Before the Meeting. A registered shareholder may submit his or her proxy by facsimile by completing, dating and signing the form of proxy and returning it by facsimile to Computershare Investor Services Inc. at (416) 263-9524 or toll free (within North America) at (866) 249-7775.

Voting by Telephone Before the Meeting. A registered shareholder may vote by telephone by calling toll free 1-866-732-VOTE (8683) or from outside of North America by calling (312) 588-4290 and following the instructions provided (located on the front of the proxy) to identify themselves to the system.

Voting by Internet Before the Meeting. A registered shareholder may vote over the Internet by going to www.investorvote.com and following the instructions. Such shareholder will require a control number (located on the front of the proxy) to identify themselves to the system.

To be effective, a proxy must be received by Computershare no later than 8:30 a.m. (Eastern Time) on May 13, 2026 or, if the Meeting is adjourned, 48 hours (Saturdays, Sundays and holidays excepted) prior to the time of holding the Meeting.

A shareholder who has given a proxy has the power to revoke it as to any matter on which a vote has not already been cast pursuant to the authority conferred by such proxy and may do so either: (1) by delivering another properly executed form of proxy bearing a later date and depositing it as described above; (2) by depositing an instrument in writing revoking the proxy executed by the shareholder with Computershare at any time up to and including 8:30 a.m. (Eastern Time) on the second last business day preceding the day of the Meeting, or any adjournment thereof, at which the proxy is to be used; or (3) in any other manner permitted by law.

If you vote before the Meeting and vote again at the Meeting (either at the in person Meeting or at the virtual Meeting using a 15-digit control number to login to the virtual Meeting and you accept the terms and conditions), you will be revoking any and all previously submitted proxies. If you DO NOT wish to revoke all previously submitted proxies, do not vote again at the in person or virtual Meeting or only enter the virtual Meeting as a guest.

Notice-and-Access

The Corporation has elected to use the notice-and-access provisions under NI 54-101 and National Instrument 51-102 – Continuous Disclosure Obligations (“NI 51-102” and together with NI 54-101, the “Notice-and-Access Provisions”) for the Meeting. The Notice-and-Access Provisions are a set of rules developed by the Canadian Securities Administrators that allow issuers to post electronic versions of proxy-related materials on-line, via the System for Electronic Document Analysis and Retrieval (“SEDAR+”) and one other website, rather than mailing paper copies of such materials to securityholders.

For holders with a 16 digit control number: Request materials by calling Toll Free, within North America - 1-877-907-7643 or outside of North America - 1-303-562-9305.

Non-Registered Holders

Only registered holders of Common Shares, or the persons they appoint as their proxies, are permitted to attend and vote at the Meeting. However, in many cases, Common Shares beneficially owned by a holder (a “Non-Registered Holder”) are registered either:

(A) in the name of an intermediary (an “Intermediary”) that the Non-Registered Holder deals with in respect of the Common Shares, such as, among others, banks, trust companies, securities dealers or brokers and trustees or administrators of self-administered registered savings plans, registered retirement income funds, registered education savings plans and similar plans; or
(B) in the name of a clearing agency (such as CDS Clearing and Depository Services Inc. (“CDS”)) of which the Intermediary is a participant.

Common Shares held in the name of an Intermediary or clearing agency can only be voted upon the instructions of the Non-Registered Holder. Without specific instructions, the Intermediary is prohibited from voting the Common Shares. Therefore, each Non-Registered Holder should ensure that voting instructions are communicated to the appropriate person well in advance of the Meeting.

Applicable Canadian regulatory policy requires Intermediaries to seek voting instructions from Non-Registered Holders in advance of shareholders’ meetings. In Canada, many Intermediaries delegate responsibility for obtaining instructions from clients to Broadridge Financial Solutions Inc.

Generally, a Non-Registered Holder will receive either a voting instruction form or, less frequently, a form of proxy. The purpose of these forms is to permit Non-Registered Holders to direct the voting of the Common Shares they beneficially own. Non-Registered Holders should follow the procedures set out below, in addition, if applicable, to the procedures set out below under “Voting at the Meeting – Appointment of a Third Party as Proxy”, depending on the type of form they receive:

1) Voting Instruction Form. In most cases, a Non-Registered Holder will receive, as part of the meeting materials, a voting instruction form. If the Non-Registered Holder does not wish to attend and vote at the Meeting (or have another person attend and vote on the holder’s behalf), but wishes to direct the voting of the Common Shares they beneficially own, the voting instruction form must be submitted by mail, telephone or over the Internet in accordance with the directions on the form. If a Non-Registered Holder wishes to attend and vote at the Meeting (or have another person attend and vote on the Non-Registered Holder’s behalf), the Non-Registered Holder must complete, sign and return the voting instruction form in accordance with the directions provided; or

2) Form of Proxy. Less frequently, a Non-Registered Holder will receive, as part of the meeting materials, a form of proxy that has already been signed by the Intermediary (typically by facsimile, stamped signature) which is restricted as to the number of Common Shares beneficially owned by the Non-Registered Holder but which is otherwise uncompleted. If the Non-Registered Holder does not wish to attend and vote at the Meeting (or have another person attend and vote on the Non-Registered Holder’s behalf), but wishes to direct the voting of the Common Shares they beneficially own, the Non-Registered Holder must complete the form of proxy and submit it to Computershare as described above. If a Non-Registered Holder wishes to attend and vote at the Meeting (or have another person attend and vote on the holder’s behalf), the Non-Registered Holder must

strike out the persons named in the proxy and insert the Non-Registered Holder (or such other person's) name in the blank space provided and submit it to Computershare as described above.

In either case, Non-Registered Holders should carefully follow the instructions of their Intermediaries, including those regarding when and where the proxy or the voting instruction form is to be delivered. In addition, if applicable, Non-Registered Holders should follow the procedures set out below under “Voting at the Meeting – Appointment of a Third Party as Proxy”.

A Non-Registered Holder may revoke a voting instruction form or a waiver of the right to receive meeting materials and to vote given to an Intermediary at any time by written notice to the Intermediary, except that an Intermediary is not required to act on a revocation of a voting instruction form or of a waiver of the right to receive materials and to vote that is not received by the Intermediary at least seven days prior to the Meeting.

Exercise of Discretion by Proxies

Common Shares represented by properly executed proxies in favour of the persons named in the form of proxy will be voted on any ballot that may be called for and, where the person whose proxy is solicited specifies a choice with respect to the matters identified in the proxy, the shares will be voted or withheld from voting in accordance with the specifications so made. Where shareholders have properly executed proxies in favour of the persons named in the form of proxy and have not specified in the form of proxy the manner in which the named proxies are required to vote the shares represented thereby, such shares will be voted in favour of the passing of the matters set forth in the Notice. The form of proxy confers discretionary authority with respect to amendments or variations to the matters identified in the Notice and with respect to other matters that may properly come before the Meeting. At the date hereof, management of the Corporation knows of no such amendments, variations or other matters to come before the Meeting. However, if any other matters which at present are not known to management of the Corporation should properly come before the Meeting, the proxy will be voted on such matters in accordance with the best judgment of the named proxies.

VOTING AT THE MEETING

General

Registered shareholders may vote at the Meeting in person or by completing a ballot online, as applicable, during the Meeting, as further described below under “How do I Attend and Participate at the Meeting?”.

Non-Registered Holders who have not duly appointed themselves as proxyholder will not be able to vote at the Meeting but will be able to participate as a guest and ask questions. This is because the Corporation and Computershare do not have a record of the Non-Registered Holders, and, as a result, will have no knowledge of your shareholdings or entitlement to vote unless you appoint yourself as proxyholder.

If you are a Non-Registered Holder and wish to vote at the Meeting, you have to appoint yourself as proxyholder by inserting your own name in the space provided on the voting instruction form sent to you and you must follow all of the applicable instructions,

including the deadline, provided by your Intermediary. See “Appointment of a Third Party as Proxy” and “How do I Attend and Participate at the Meeting?” below.

If you are a U.S. beneficial shareholder, to attend and vote at the Meeting, you must first obtain a valid legal proxy from your broker, bank or other agent and then register in advance to attend the Meeting. Follow the instructions from your broker or bank included with these proxy materials, or contact your broker or bank to request a legal proxy form. After first obtaining a valid legal proxy from your broker, bank or other agent, to then register to attend the Meeting, you must submit a copy of your legal proxy to Computershare. Requests for registration should be directed by mail to the attention of the Proxy Department of Computershare Investor Services Inc. at 320 Bay Street, 14th Floor, Toronto, Ontario, M5H 4A6 or by email at [email protected]. Requests for registration must be labeled as “Legal Proxy” and be received no later than May 13, 2026 by 8:30 a.m. (Eastern Time). You will receive a confirmation of your registration by email after Computershare receives your registration materials. Please note that you MUST also register your appointment at http://www.computershare.com/Constellation.

Appointment of a Third Party as Proxy

The following applies to shareholders who wish to appoint someone as their proxyholder other than the management nominees named in the form of proxy or voting instruction form. This includes Non-Registered Holders who wish to appoint themselves as proxyholder to attend, participate or vote at the Meeting.

Shareholders who wish to appoint someone other than the management nominees as their proxyholder to attend and participate at the Meeting as their proxy and vote their Common Shares MUST submit their form of proxy or voting instruction form, as applicable, appointing that person as proxyholder AND register that proxyholder online, as described below. Registering your proxyholder is an additional step to be completed AFTER you have submitted your form of proxy or voting instruction form. Failure to register the proxyholder will result in the proxyholder not receiving an invite code to vote in the virtual Meeting and only being able to attend as a guest.

Step 1: Submit your form of proxy or voting instruction form: To appoint someone other than the management nominees as proxyholder, insert that person’s name in the blank space provided in the form of proxy or voting instruction form (if permitted) and follow the instructions for submitting such form of proxy or voting instruction form. This must be completed before registering such proxyholder, which is an additional step to be completed once you have submitted your form of proxy or voting instruction form.

If you are a Non-Registered Holder and wish to vote at the Meeting, you have to insert your own name in the space provided on the voting instruction form sent to you by your Intermediary, follow all of the applicable instructions provided by your Intermediary AND register yourself as your proxyholder, as described below. By doing so, you are instructing your Intermediary to appoint you as proxyholder. It is important that you comply with the signature and return instructions provided by your Intermediary. Please also see further instructions below under the heading “How do I Attend and Participate at the Meeting?”.

Step 2: Register your proxyholder: To register a third party proxyholder, shareholders must visit http://www.computershare.com/Constellation by 8:30 a.m. (Eastern Time) on May 13, 2026 and provide Computershare with the required proxyholder contact

information so that Computershare may provide the proxyholder with an invite code via email to participate in the virtual Meeting. Without an invite code, proxyholders will not be able to vote at the virtual Meeting but will be able to participate as a guest.

How do I Attend and Participate at the Meeting?

The Corporation is holding the Meeting in a hybrid format, which will be conducted via live video webcast and in-person. The Meeting is scheduled to begin at 8:30 am Eastern Time and will follow the meeting of shareholders of Topicus.com Inc., scheduled to begin at 8:00 am Eastern Time, and Lumine Group Inc., scheduled to begin at 8:15 am Eastern Time. If the Topicus.com Inc. and Lumine Group Inc. meetings of shareholders run longer than anticipated, the Meeting may begin after the scheduled start time. We encourage shareholders to join the Meeting in advance of the scheduled 8:30 am Eastern Time start time and, for those joining the virtual Meeting, to remain logged in until the live video webcast begins.

Attending the Meeting In Person

The Meeting will have a physical meeting location (Delta Hotels Toronto, 75 Lower Simcoe Street, Toronto, Ontario, M5J 3A6) with in-person attendance. Individuals who plan to attend the Meeting in person are requested to register in advance by May 8, 2026 online at https://cvent.me/mRQ94A. This registration is to assist the Corporation in tracking the number of in person Meeting attendees and is in addition to, and not a substitute for, the appointment of a proxyholder. Please see "Voting at the Meeting - General" and "Voting at the Meeting - Appointment of a Third Party as Proxy" above for additional details.

Registered shareholders and duly appointed proxyholders will be able to vote at the in person Meeting. Non-registered shareholders who have not duly appointed themselves as a proxyholder will not be able to vote at the in person Meeting.

If you vote again at the Meeting, you will be revoking any and all previously submitted proxies. If you DO NOT wish to revoke all previously submitted proxies, do not vote again at the Meeting.

Attending the Meeting via Live Video Webcast

The Meeting will also permit registered shareholders and duly appointed proxyholders to participate virtually via live webcast online at https://meetnow.global/MMT5Q4H. During the live webcast, shareholders will be able to hear the Meeting live, and registered shareholders and duly appointed and registered proxyholders will be able to submit questions and vote while the Meeting is being held.

Attending the Meeting online enables registered shareholders and duly appointed proxyholders, including Non-Registered Holders who have duly appointed themselves as proxyholder, to vote at the Meeting and ask questions at the appropriate times during the Meeting, all in real time.

Guests, including Non-Registered Holders who have not duly appointed themselves as proxyholder, can login to the virtual Meeting as set out below. Guests can listen to the Meeting and ask questions but are not able to vote.

Log in online at: https://meetnow.global/MMT5Q4H on your smartphone, tablet or computer. You will need the latest version of Chrome, Safari, Edge or Firefox. We

recommend that you log in at least one hour before the Meeting starts.

If you are a registered shareholder click “Shareholder” and then enter your 15-digit control number, which is the control number located on your form of proxy or in the email notification you received from Computershare.

If you are a duly appointed proxyholder click “Invitation” and then enter the invite code that was provided to you by Computershare after the voting deadline passed. In order to be a duly appointed proxyholder the proxyholder must be registered as described in “Appointment of a Third Party as Proxy” above.

If you are a Non-Registered Holder that has not appointed yourself as a proxyholder click “Guest” and then complete the online form.

If you attend the Meeting online, it is important that you are connected to the internet at all times during the Meeting in order to vote when balloting commences. It is your responsibility to ensure connectivity for the duration of the Meeting. You should allow ample time to check into the Meeting online and complete the related procedures outlined above.

If you are using a 15-digit control number to login to the Meeting and you accept the terms and conditions, and you vote again at the Meeting, you will be revoking any and all previously submitted proxies. If you DO NOT wish to revoke all previously submitted proxies, do not vote again at the Meeting or only enter the Meeting as a guest.

INTERPRETATION

Unless otherwise indicated, all dollar amounts are expressed in U.S. dollars. All references to “$” are to U.S. dollars and all references to “C$” are to Canadian dollars. The information contained herein is provided as of March 28, 2026, unless indicated otherwise.

VOTING SHARES AND PRINCIPAL HOLDERS THEREOF

The Corporation has fixed April 2, 2026 as the record date (the “Record Date”) for the persons entitled to receive notice of the Meeting. The Corporation shall prepare a list of all persons who are registered holders of Common Shares on the Record Date and the number of Common Shares registered in the name of each holder on such date. Each holder of Common Shares is entitled to be present at the Meeting and to one vote for each Common Share registered in the name of such holder in respect of each matter to be voted upon at the Meeting. As at March 28, 2026, there were 21,191,530 Common Shares outstanding.

A quorum for the transaction of business at the Meeting is the presence of two shareholders of the Corporation holding Common Shares, present in person or by telephonic or electronic means and holding or representing by proxy not less than 15% of the votes entitled to be cast at the Meeting.

To the knowledge of the directors and officers of the Corporation, no person beneficially owns, or exercises control or direction over, directly or indirectly more than 10% of the outstanding Common Shares.

COMPENSATION OF EXECUTIVE OFFICERS

COMPENSATION DISCUSSION AND ANALYSIS

Objectives of the Corporation’s Executive Compensation Program

The primary objective of the Corporation's executive compensation program is to attract and retain highly skilled executives required for the success of the Corporation and to reward and retain executives who create long-term value for our shareholders. The Compensation, Nominating and Human Resources (“CNHR”) Committee is responsible for making recommendations to the Board of Directors of the Corporation (the “Board” or the “Board of Directors”) with respect to the establishment of a compensation plan for the Corporation's executive officers, including the Named Executive Officers (as defined below).

The Corporation’s executive compensation program consists of base salary and annual incentive compensation. The annual incentive compensation is paid by way of a cash bonus, although a portion of the bonus is usually required to be used to purchase Common Shares.

Total compensation for each executive officer is designed to be competitive. The compensation for the executives is determined based on the experience of the CNHR members and an internal comparison across the Corporation’s business units giving consideration to the size of the business unit and the performance metrics which are important to CSI, namely return on invested capital and revenue growth.

Certain CSI executives voluntarily waived portions of their salary and bonus entitlements in 2025 and in previous years.

Base Salary

Providing a market competitive base salary is necessary to attract new talent as required, and it assists in retaining skilled executive talent. Base salaries for the Operating Group Managers and other Named Executive Officers are set by the CNHR Committee taking into account the executive’s responsibilities, skills, and in the case of the Operating Group Managers, the size of the Operating Group in which they are employed. All executive salaries are reviewed annually by the CNHR Committee on the basis of the above criteria and adjusted accordingly.

Annual Incentive Bonus

The objective of our annual incentive bonus is to reward employees for working towards our goal of increasing shareholder value. We believe that shareholder value is created by managing two financial components over the long term: profitability and growth. As such, our corporate bonus plan, which compensates our most senior employees, is based upon return on invested capital (“ROIC”) and net revenue growth (ROIC is calculated by dividing net income for bonus purposes for the year by the Average Invested Equity Capital for the period.). “Average Invested Equity Capital” represents the average equity capital of CSI, and is based on the Corporation’s estimate of the amount of money that our common shareholders have invested in CSI. Subsequent to that estimate, the Corporation keeps a running tally and adds net income for bonus purposes, subtracting any dividends, adding any amounts related to share issuances and makes some minor adjustments, including adjustments relating to our use of certain incentive programs and the impairment of intangible assets. Where Operating Groups, portfolios, or businesses are subject to a policy requiring them to keep their capital and reinvest it, dividends are treated as notional loans to the

parent company and do not reduce Average Invested Equity Capital. Neither net income for bonus purposes nor Average Invested Equity Capital are measures defined by International Financial Reporting Standards. Net income for bonus purposes is calculated by making a number of adjustments to net income per the annual consolidated financial statements. The principal adjustments to net income include adjustment for the impact of deferred income taxes, unrealized foreign exchange gains/losses, bargain purchase gains, contingent consideration expense, redeemable preferred securities expense, reductions due to ownership interests in subsidiaries and amortization and impairments of intangibles.

An individual’s annual incentive bonus is calculated as follows:

Base salary x Company performance factor x Individual factor

Individual factors for the Operating Group Managers and other Named Executive Officers are set by the CNHR Committee taking into account the executive’s responsibilities, skills, and in the case of the Operating Group Managers, the size of the Operating Group in which they are employed.

The company performance factor for Operating Group Managers is based upon the performance of their respective Operating Group. The President, CFO, and other head office employees’ company performance factor is based upon the performance of the Corporation as a whole.

The company performance factor is determined by reference to net revenue growth and ROIC. ROIC is calculated by dividing net income for bonus purposes for the year by the Average Invested Equity Capital for the period. In all but one of our Operating Groups, a ‘risk free’ rate of return established by the board (currently 5%) is netted from the ROIC. If the ROIC does not exceed the risk-free rate of return, then the manager of the business receives no bonus. The Corporation measures growth by looking at the year-over-year increase in net revenues for the particular Operating Group. Net Revenue is not a measure defined by International Financial Reporting Standards. It is calculated based on revenue as reported in the Corporation’s consolidated financial statements prepared in accordance with International Financial Reporting Standards less any third party and flow-through expenses.

In considering the implications of the risks associated with the Corporation’s annual incentive bonus structure, the CNHR Committee was satisfied that the counterbalance between ROIC (calculated by dividing net income for bonus purposes for the year by the Average Invested Equity Capital for the period) and net revenue growth and the requirement to generally invest 75% of their after-tax incentive bonus into Common Shares mitigates the risk that a Named Executive Officer would take inappropriate or excessive risks in respect of the Corporation’s operations.

Although the Board may, at its discretion, increase or decrease the amount of annual incentive bonus awarded to a Named Executive Officer in a given year, it did not exercise such discretion in respect of the most recently completed fiscal year.

Investment of Annual Incentive Bonus in Constellation shares

Executive officers are generally required to invest 75% of their after-tax incentive bonus into Common Shares (or in the case of executive officers of Topicus.com Inc., subordinate voting shares of Topicus.com Inc.). The shares are held in escrow for a minimum average period of four years. Once in every five-year period, executive officers may choose to receive their bonus entirely

in cash. As of the date hereof, the Corporation does not have a formal policy that restricts the purchase by its Named Executive Officers, directors or other employees of financial instruments (including prepaid variable forward contracts, equity swaps, collars or units of exchange funds) that are designed to hedge or offset a decrease in the market value of equity securities granted as compensation or held, directly or indirectly, by the Named Executive Officer, director or employee.

Mark Leonard's Compensation

Mr. Leonard's compensation for acting as President of the Corporation during fiscal 2025 was determined by the CNHR Committee. Mr. Leonard's and head office employees' incentive bonus entitlement is calculated in the same manner as the other executive officers as described above. In 2023, 2024 and 2025, Mr. Leonard voluntarily waived his entitlement to receive a salary and a bonus. Additional information regarding Mr. Leonard's compensation was included in a Letter to Shareholders filed on SEDAR+ on April 6, 2015. Mark Leonard resigned as President of Constellation on September 25, 2025.

Mark Miller's Compensation

Mark Miller was appointed President of the Corporation on September 25, 2025. During 2025, Mark Miller received his previously agreed to compensation for his role as the Executive Chairman of the Volaris Operating Group. Mr. Miller has voluntarily waived his entitlement to receive a salary and a bonus commencing on January 1, 2026. The President's performance will be reviewed on an annual basis by the CNHR Committee, and changes to his base salary and/or the basis used for calculating incentive compensation in the coming year are made at that time.

Share Performance Graph

The following graph compares the total cumulative shareholder return over the five most recently completed financial years for C$100 invested in Common Shares on such date with the total cumulative return of the S&P/TSX Composite Index on an annual basis.

	Dec 31/20	Dec 31/21	Dec 31/22	Dec 31/23	Dec 31/24	Dec 31/25
Constellation Software Inc. (CSU: TSX)	100	142	129	204	277	206
S&P/TSX Composite Index	100	125	118	132	160	211

The Corporation's total shareholder return increased by $106\%$ since December 31, 2020, while the S&P/TSX composite index increased by $111\%$ over the same period. Named Executive Officer compensation from 2020 to 2025, increased by $39\%$ , compared to the $106\%$ increase in cumulative shareholder return over the same period. The bonuses of the Named Executive Officers, except for the President and Chief Financial Officer of the Corporation, are tied to the returns on invested capital of the Operating Group for which they are directly responsible, rather than the returns on the capital of the Corporation as a whole.

Summary Compensation Table

The following table provides a summary of the compensation earned during 2023, 2024 and 2025 by the President, the Chief Financial Officer and the Corporation's other three most highly compensated executive officers based on total compensation for the fiscal year ended December 31, 2025 (collectively, the "Named Executive Officers").

Name and Principal Position	Fiscal Year	Annual Compensation (presented in United States Dollars) (1)
			Annual Incentive Plan Compensation ($)(2)
		Salary ($)	Portion of Bonus Paid in Cash ($)	Portion of Bonus Expected to be Used to Purchase Common Shares (3) (5) ($)	Total Bonus ($)	Other Annual Compensation ($)	Total Compensation ($)
Mark Miller, President and Chief Operating Officer of Constellation Software and Executive Chairman, Volaris Operating Group (7)	2025	329,067	176,788	530,364	707,152	NIL	1,036,219
	2024	335,732	187,824	563,471	751,295	NIL	1,087,027
	2023	340,827	221,860	665,578	887,438	NIL	1,228,265
Mark Leonard President(6)	2025	-(4)	-	-	-(4)	NIL	-
	2024	-(4)	-	-	-(4)	NIL	-
	2023	-(4)	-	-	-(4)	NIL	-
Jamal Baksh Chief Financial Officer	2025	248,947	154,337	463,012	617,349	NIL	866,296
	2024	241,581	200,627	601,880	802,507	NIL	1,044,088
	2023	237,838	180,153	540,460	720,613	NIL	958,451
Jeff Bender Executive Chairman, Harris Operating Group	2025	429,218	278,704	836,110	1,114,814	NIL	1,544,032
	2024	437,911	265,828	797,484	1,063,312	NIL	1,501,223
	2023	444,556	409,876	1,229,627	1,639,503	NIL	2,084,059
Robin Van Poelje President, Chief Executive Officer and Chairman, Topicus.com Inc.	2025	401,366	430,061	1,290,184	1,720,245	NIL	2,121,611
	2024	385,040	272,887	818,661	1,091,548	NIL	1,476,588
	2023	384,873	332,834	998,501	1,331,335	NIL	1,716,208
Damian McKay Chief Executive Officer, Vela Operating Group	2025	444,522	922,040	1,202,341	2,124,381	NIL	2,568,903
	2024	423,760	384,198	1,152,595	1,536,793	NIL	1,960,553
	2023	387,858	465,774	1,397,320	1,863,094	NIL	2,250,952

Notes:
(1) The compensation data presented for Damian McKay was paid in Australian dollars. The compensation data presented for Robin Van Poelje was paid in euros. The compensation data presented for the remaining individuals was paid in Canadian dollars. Australian dollar salary amounts have been converted to U.S. dollars using the average annual exchange rate of $0.6442 for 2025 (2024 - $0.6594; 2023 - $0.6639). 2024 Australian dollar bonus amounts have been converted to U.S. dollars using the exchange rate prevailing at December 31, 2025 of $0.6682 (2024 - $0.6204; 2023 - $0.6805). Euro salary amounts have been converted to U.S. dollars using the average annual exchange rate of $1.1274 for 2025 (2024 - $1.0816; 2023 - $1.0811). 2025 euro bonus amounts have been converted to U.S. dollars using the exchange rate prevailing at December 31, 2025 of $1.1739 (2024 - $1.0386; 2023 - $1.1036). Canadian dollar salary amounts have been converted to U.S. dollars using the average annual exchange rate of $0.7154 for 2025 (2024 - $0.7299; 2023 - $0.7409). 2025 Canadian dollar bonus amounts have been converted to U.S. dollars using the exchange rate prevailing at December 31, 2025 of $0.7294 (2024 - $0.6957; 2023 - $0.7543). The amounts shown in this table do not reflect deductions for any amounts withheld at the source for tax purposes.
(2) Annual incentive compensation is paid by way of a cash bonus, although a portion of such bonus is required to be used to purchase Common Shares on the open market. See "Compensation Discussion and Analysis" for a description of the annual incentive bonus.
(3) The after-tax amounts are expected to be used to purchase Common Shares.
(4) Mr. Leonard voluntarily waived his entitlement to receive a salary or a bonus in 2023, 2024 and 2025.

(5) Mr. Van Poelje was required to purchase subordinate voting shares of Topicus.com Inc. instead of Common Shares of CSI.
(6) Mr. Leonard resigned as President of Constellation Software Inc. on September 25, 2025.
(7) Mr. Miller was appointed President of Constellation Software Inc. on September 25, 2025. The compensation data presented for Mr. Miller for 2023, 2024 and 2025 was paid in relation to his role as Executive Chairman of the Volaris Operating Group. Mr. Miller has voluntarily waived his entitlement to receive a salary or a bonus commencing on January 1, 2026.

Employment Agreements

Each of the Named Executive Officers has an employment contract which provides for, among other things, certain covenants in favour of the Corporation or, in respect of a Named Executive Officer employed by one of our subsidiaries, that subsidiary. Each employment agreement provides that the Named Executive Officer will not, during the period of his employment or for a period of at least one year thereafter, be involved in any business that develops or markets competitive software or consulting, maintenance, support or training services in any jurisdiction where we market our products or services. The Named Executive Officer will not, without the prior written approval of the board of directors of his employer, employ any employee or consultant of CSI, in the case of the President and Chief Financial Officer, and, in the case of the other Named Executive Officers, of the applicable operating group each is responsible for, in each case for a period of at least 12 months (or six months in the case of Mr. Miller) after the termination of his employment. Each Named Executive Officer will not, during his employment or for a period of at least 12 months thereafter, contract or solicit any clients (including persons who become clients within six months of the termination of his employment) for the purposes of the selling or supplying software products or services competitive to those offered by the Corporation, in the case of the President and the Chief Financial Officer, and, in the case of the other Named Executive Officers, those offered by the applicable Operating Group he is responsible for. If terminated for other than just cause, Mr. Miller is entitled to either 12 months prior written notice or payment in an amount equal to 12 months' pay at the rate in effect at the time of his termination. Mr. Baksh is not entitled to any termination payments or prior notice pursuant to the terms of his employment contract. If Mr. McKay is terminated for other than just cause, he is entitled to six months' prior notice of any termination or six months basic salary at the rate in effect at termination. Mr. Van Poelje is entitled to two months' prior notice of any termination and is not entitled to any termination payments pursuant to the terms of his employment contract. If terminated for other than just cause, Mr. Bender is entitled to either 12 months prior written notice or payment in an amount equal to 12 months' salary at the rate in effect at the time of his termination.

Compensation of Non-Employee Directors

The following table provides a summary of the compensation earned by each of the non-employee directors during the fiscal year ended December 31, 2025. Non-employee directors are paid $60,000 per annum, plus $20,000 per annum for each committee of the Board (“Committee”) of which they are a member. The Vice-Chairman of the Board is paid an additional $40,000 per annum. The fees are payable in cash; however, the after-tax portion of such fees must be used by the non-employee directors to purchase Common Shares on the open market. The Common Shares are required to be held in escrow for a minimum average period of four years. The non-employee directors will also be reimbursed for all out-of-pocket expenses incurred in their capacities as members of the Board. During the fiscal year ended December 31, 2025, no non-employee directors rendered additional professional services, directly or indirectly, to the Corporation.

Name	Annual Compensation(1)
	Fees Earned ($)			All Other Compensation ($)	Total Compensation ($)
	Fees paid in cash ($)	Fees used to purchase common shares ($)(2)	Total fees earned ($)
Lori O’Neill(3)	NIL	30,000	30,000	NIL	30,000
Robert Kittel	NIL	100,000	100,000	NIL	100,000
Lawrence Cunningham	NIL	120,000	120,000	NIL	120,000
Susan Gayner(3)	NIL	30,000	30,000	NIL	30,000
Claire Kennedy	NIL	72,500	72,500	NIL	72,500
Donna Parr	NIL	60,000	60,000	NIL	60,000
Andrew Pastor	NIL	80,000	80,000	NIL	80,000
John Billowits	NIL	60,000	60,000	NIL	60,000
Laurie Schultz	NIL	72,500	72,500	NIL	72,500

Notes:
(1) The amounts shown in this table do not reflect deductions for any amounts withheld at the source for tax purposes.
(2) The after-tax amounts have been used to purchase Common Shares.
(3) Ms. O’Neill and Ms. Gayner did not stand for re-election to the Board at the annual meeting of shareholders held on May 13, 2025.

Directors' and Officers' Liability Insurance

We currently maintain directors' and officers' liability insurance coverage with a C$25 million per occurrence limit and a C$25 million limit in aggregate. The policy provides coverage for corporate directors and officers against claims for financial loss arising from any alleged wrongful act in directing the business of a corporation. It covers the associated legal, accounting, adjusting and investigation expenses, compensatory damages and punitive or exemplary damages. C$20 million of this insurance includes coverage to reimburse the Corporation for its indemnity obligations to the directors and officers and for securities claims made against the Corporation. The remaining C$5 million is dedicated to the directors and officers where they are not indemnified by the Corporation. The annual premium paid by the Corporation for this coverage is C$417,500.

STATEMENT OF CORPORATE GOVERNANCE PRACTICES

Our Board of Directors is responsible for developing our approach to corporate governance issues and is committed to ensuring that a healthy governance culture exists at the Corporation. The directors periodically review the size, composition and compensation of the Board of Directors, the effectiveness of the Board and its individual members, and appropriate committee structures, mandates, composition, membership and effectiveness. To the extent that a conflict of interest arises from time to time, a conflicted director is required to recuse himself or herself from the applicable portion of any meeting at which such matter is to be discussed or decided.

In accordance with National Instrument 58-101 Disclosure of Corporate Governance Practices ("NI 58-101"), the Corporation is required to disclose on an annual basis its approach to corporate governance. The Corporation's approach to significant issues of corporate governance is designed to ensure that the business and affairs of the Corporation are effectively managed to enhance shareholder value. The Corporation's corporate governance practices have been and continue to be in compliance with applicable Canadian requirements. Where the Corporation does not comply with recommended guidelines, it believes non-compliance is justifiable and its reasoning is provided. The Board has approved the description of the Corporation's approach to corporate governance as outlined in Schedule "A" to this Circular. Corporate governance guidelines change from time to time. The Board monitors pending regulatory initiatives and developments in the corporate governance area and will address them as appropriate.

INDEBTEDNESS OF DIRECTORS AND EXECUTIVE OFFICERS

As of March 28, 2026, no current or former directors, executive officers or employees of the Corporation, or any of its subsidiaries, has any indebtedness to the Corporation or any of its subsidiaries.

PARTICULARS OF MATTERS TO BE ACTED UPON AT THE MEETING

Appointment of Auditors

At the Meeting, shareholders will be requested to re-appoint KPMG LLP as auditors of the Corporation, to hold office until the next annual meeting of shareholders, and to authorize the Board of Directors to fix the auditors’ remuneration. KPMG LLP have been the auditors of the Corporation since the fiscal year ended December 31, 1995.

Unless the shareholder directs that his or her Common Shares are to be withheld from voting in connection with the appointment of auditors, the persons named in the form of proxy intend to vote for the reappointment of KPMG LLP as auditors of the Corporation until the next annual meeting of shareholders and to authorize the directors to fix their remuneration.

Election of Directors

The number of directors to be elected at the Meeting is nine. Directors of the Corporation are elected annually and, unless re-elected, retire from office at the end of the next annual general meeting of shareholders.

Majority Director Election Policy

In 2009, the Board of Directors adopted a majority director election policy (the “Policy”). The Policy requires that the form of proxy for the vote at a shareholder meeting where directors are to be elected will provide for separate voting for each director nominee. The Policy requires that any nominee for director who receives a greater number of votes “withheld” than votes “for” his or her election must immediately resign from the Board following the shareholders meeting.

The Board of Directors will consider relevant circumstances surrounding a nominee’s failure to obtain a majority vote and will, in the absence of compelling circumstances, accept the resignation as soon as appropriate, consistent with an orderly transition. The Board will disclose the decision, via press release, announcing the resignation of the director or explaining the reasons justifying the decision not to accept the resignation. It is expected any resignation will be accepted by the Board within 90 days of the meeting at which such director was found not to have the confidence of the shareholders. Subject to applicable law, if a resignation is accepted, the Board may (i) leave the vacancy unfilled until the next annual general meeting of shareholders; (ii) fill the vacancy through the appointment of a new director whom the Board considers to merit the confidence of shareholders; (iii) call a special meeting of shareholders at which there will be presented a management slate to fill the vacant position or positions; or (iv) reduce the size of the Board.

Unless the shareholder directs that his or her Common Shares be otherwise voted or withheld from voting in connection with the election of directors, the persons named in the form of proxy will vote for the election of the nine (9) nominees whose names are set forth below. Management does not contemplate that any of the nominees will be unable to serve as a director but if that should occur for any reason prior to the Meeting or any adjournment thereof, it is intended that discretionary authority shall be exercised by the persons named in the form of proxy to vote the proxy for the election of any other person or persons in place of any nominee or nominees unable to serve. Each director elected will hold office until the close of business of the first annual meeting of shareholders of the Corporation following his or her election unless his or

her office is earlier vacated in accordance with the Corporation's by-laws, the Policy, and the Business Corporations Act (Ontario) ("OBCA"). The Board may from time to time appoint a Vice Chairman.

The following table sets out, for each person proposed to be nominated for election as a director, the person's name, municipality of residence, position(s) with CSI, principal occupation, the year in which the person became a director, and the approximate number of (i) Common Shares of CSI, (ii) subordinate voting shares of Topicus.com Inc., a subsidiary of CSI (iii) ordinary units of Topicus Coop, a subsidiary of CSI, and (iv) subordinate voting shares of Lumine Group Inc., a subsidiary of CSI that each has advised are beneficially owned or subject to his or her control or direction, either directly or indirectly as of March 28, 2026.

Name and Place of Residence	Position(s) with CSI	Principal Occupation	Director Since	Common Shares of CSI Beneficially Held or Over Which Control is Exercised	Subordinate Voting Shares of Topicus.com Inc. Beneficially Held or Over Which Control is Exercised	Ordinary Units of Topicus Coop Beneficially Held or Over Which Control is Exercised	Subordinate Voting Shares of Lumine Group Inc. Beneficially Held or Over Which Control is Exercised
Mark Miller Oakville, Ontario, Canada	President, Chief Operating Officer and Director, CSI, Executive Chairman, Volaris Group, Director and Chairman of Lumine Group Inc.	President and Chief Operating Officer, CSI, Executive Chairman, Volaris Operating Group	2025	254,533	521,237	-	806,261
Claire Kennedy (1), Toronto, Ontario, Canada	Director	Senior Advisor, Bennett Jones LLP	2022	220	1,739	-	498
Lawrence Cunningham (2) New York, NY, USA	Director and Vice-Chairman of the Board	Professor	2023	1,324	336	-	3,354
Andrew Pastor (2), Toronto, Ontario, Canada	Director	Partner, EdgePoint	2020	108	-	-	141

Name and Place of Residence	Position(s) with CSI	Principal Occupation	Director Since	Common Shares of CSI Beneficially Held or Over Which Control is Exercised	Subordinate Voting Shares of Topicus.com Inc. Beneficially Held or Over Which Control is Exercised	Ordinary Units of Topicus Coop Beneficially Held or Over Which Control is Exercised	Subordinate Voting Shares of Lumine Group Inc. Beneficially Held or Over Which Control is Exercised
John Billowits, Toronto, Ontario, Canada	Director and Chairman of the Board	Investor	2020	35,961	74,086	-	113,106
Donna Parr, Toronto, Ontario, Canada	Director	President, Crimson Capital	2020	99	2,511	-	138
Laurie Schultz(1), Vancouver, British Columbia, Canada	Director	Consultant	2021	369	-	-	396
Robert Kittel(1) (2), Toronto, Ontario, Canada	Director	Consultant	2013	1,203	1,918	-	3,352
Jamal Baksh Toronto, Ontario, Canada	Director, Chief Financial Officer	Chief Financial Officer of CSI	2025	1,811	4,888	-	7,033

Notes:
(1) Member of Audit Committee.
(2) Member of Compensation, Nominating and Human Resources Committee.

The following are brief profiles of each person proposed to be nominated for election as a director, including a description of each individual’s principal occupation within the past five years.

Mark Miller – Director, President and Chief Operating Officer, Constellation Software, Executive Chairman, Volaris Operating Group, Chairman of Lumine Group Inc. Board of Directors

Mr. Miller has worked with CSI, Volaris Group and its subsidiaries for more than 30 years. Mr. Miller co-founded Trapeze Group in 1988, which was the first company acquired by CSI in 1995. Since joining Volaris Group, Trapeze Group has expanded on a global scale. The focus of his role at CSI has been on growing and developing exceptional leaders, while continuing to acquire great companies that we buy and hold forever. Mr. Miller also currently serves on the boards of Lumine Group, CSI’s telecom-focused independent division; Modaxo CSI’s people transportation division, ventureLAB, a technology incubator located within one of Canada’s densest technology clusters and VoxCell BioInnovation, a biotechnology and tissue engineering company focused on

advancing drug discovery. Mr. Miller previously served on the boards of Medgate (now known as Cority), a Toronto-based market leader in occupational health and industrial hygiene software and Computer Modeling Group, a Calgary-based software technology company with hundreds of oil and gas clients and consulting firms across the world.

Claire Kennedy - Director

Ms. Kennedy joined the Board in 2022. From 2019-2025, Ms. Kennedy was Senior Advisor, Clients & Industries at Bennett Jones LLP, prior to which she was a tax partner of the firm from 2009. Ms. Kennedy received her BASc in Chemical Engineering & Applied Chemistry from the University of Toronto in 1989 and her LL.B from Queen's University in 1994. Called to the bar in Ontario in 1996, Ms. Kennedy was law clerk to the late Honourable Mr. Justice Charles D. Gonthier of the Supreme Court of Canada. Ms. Kennedy currently serves as Chair of the Audit Committee of Alamos Gold Inc. and as a Trustee of the National Gallery of Canada. She served as a director of the Bank of Canada from 2012 to 2025 and was Lead Director from 2018-2025. She is past Chair of the Board at Neo Performance Materials Inc. and past Chair of the University of Toronto's Governing Council. She is a co-Chair of the University's Defy Gravity campaign and she is a member of the Dean's Advisory Board at the Rotman School of Management.

Robert Kittel - Director

Mr. Kittel joined the Board in 2013. Since May 2025, Mr. Kittel has been the President of Saranac Capital Inc., a personal investment holding company and a corporate director. Mr. Kittel was the Chief Operating Officer of Westaim Canada Services Corporation from January 2025 to April 2025 and The Westaim Corporation from January 2013 to December 2024. The Westaim Corporation is a publicly traded financial and investment holding company. Previously he was a Partner and Portfolio Manager at Goodwood Inc., an investment management firm that he joined in 2002. From 2000 through 2002, he was Vice President and Analyst of a Canadian-based hedge fund investment firm. From 1997 through 2000, Mr. Kittel was employed by the Cadillac Fairview Corporation, a commercial real estate development company in the investments area. Prior to 1997, Mr. Kittel was a staff accountant at KPMG LLP. Mr. Kittel has served as a director on several public boards, both in Canada and the United States. Mr. Kittel holds a BBA Honours (Gold Medalist) from Wilfrid Laurier University and is a Chartered Professional Accountant and a Chartered Financial Analyst.

Lawrence Cunningham - Director and Vice Chairman of the Board

Mr. Cunningham joined the Board in August 2017. Mr. Cunningham is the Presiding Director of the John L. Weinberg Center for Corporate Governance at the University of Delaware and Professor Emeritus at George Washington University. He has served on numerous public and private boards, including currently as a director of Market Group (New York Stock Exchange), and is Trustee of the Museum of American Finance. Previous positions include practicing corporate law with Cravath, Swaine & Moore and Mayer Brown; Academic Dean of Boston College Law School; and Director of the Heyman Center on Corporate Governance at Cardozo Law School. In 2018, he received the B. Kenneth West Lifetime Achievement Award from the National Association of Corporate Directors (NACD). Prof. Cunningham holds a bachelor's degree in economics (with honors) from the University of Delaware and a juris doctor (law) degree from Cardozo (magna cum laude).

John Billowits - Director and Chairman of the Board

Mr. Billowits was previously employed by CSI from 2003 until 2020, most recently as the Chief Executive Officer of the Vela Operating Group. Prior to being CEO of the Vela Operating Group, he was the Chief Financial Officer of CSI and was the President of Jonas Club division. Prior to joining CSI, Mr. Billowits held a number of roles with Bain & Company, Dell Computers and PwC. Mr. Billowits is a Chartered Professional Accountant, holds an MBA with Distinction from the

London Business School and Honours BBA with Distinction from Wilfrid Laurier University. Mr. Billowits also serves on the Board of Directors of Togetherwork, a privately held vertical market software company, Topicus.com Inc., a European provider of vertical market software and vertical market platforms to clients in public and private sector markets, and HgCapital Trust Plc.

Andrew Pastor – Director

Mr. Pastor is currently a Partner at EdgePoint and has been with EdgePoint since 2013. Mr. Pastor was an equity research analyst at Sionna Investment Managers from 2010 to 2012 and previously spent four years at BMO Harris Investment Management. From 2016 to 2020 (prior to his formal appointment to the Board), Mr. Pastor had been engaged as an unpaid Board observer to CSI’s Board of Directors. Mr. Pastor has a BA from the University of Western Ontario and is a CFA charterholder.

Donna Parr – Director

Ms. Parr has significant experience in venture and private equity investing and corporate finance working for Canadian Medical Discoveries Fund, Ontario Municipal Employees Retirement System, Canada Pension Plan, and several other institutional investors. Ms. Parr has served on numerous boards of private companies primarily on behalf of institutional investors and as an Independent Corporate Director, including a term as a director of CSI from 1995 to 2003. Ms. Parr is currently a Managing Partner at Cross-Border Impact Ventures, the President of Crimson Capital and has been with Crimson Capital since 2009. Ms. Parr holds an MBA from York University and Masters and Honours degrees from the University of Toronto in International Relations. Ms. Parr is currently a director of Topicus.com Inc.

Laurie Schultz — Director

Ms. Schultz has been a member of the Board since 2021. Ms. Schultz has over thirty years of experience in the software and technology sectors, including leadership of several multi-million dollar software businesses spanning the personal finance, small business accounting, SaaS, mid-market ERP, and GRC categories. Ms. Schultz served as the President and CEO of Galvanize from 2011 until it was sold in 2021. Starting in 2004 she held several executive positions at Sage including serving as VP and GM at Sage’s Mid-Market ERP business group from 2007 until 2011. Ms. Schultz was a Senior Manager at KPMG from 1996 until 1999 and was a Senior Manager at Telus Communications from 1989 until 1996. Ms. Schultz is currently a Director of Lumine Group Inc. Ms. Schultz holds a Bachelor of Commerce and an MBA from the University of Alberta.

Jamal Baksh – Director and Chief Financial Officer

Mr. Baksh has been with CSI since 2003 when he joined as Controller of the Jonas Operating Group. Mr. Baksh is currently the Chief Financial Officer of CSI. Prior to assuming this role, he has served in a number of senior executive roles within Jonas and Constellation including Vice President of Finance for Constellation reporting to the Chief Financial Officer. Mr. Baksh is a Certified Management Accountant and holds an Honours Bachelor of Mathematics degree from the University of Waterloo.

Approach to Executive Compensation

The primary objective of the Corporation's executive compensation program is to attract and retain highly skilled executives required for the success of the Corporation and to reward and retain executives who create long-term value for our shareholders. See “Compensation Discussion and Analysis” for detailed disclosure of CSI’s executive compensation program. The Board has adopted a policy to hold a non-binding advisory vote on the approach to executive compensation as disclosed in the management information circular at each annual meeting. At the Meeting, shareholders will have an opportunity to vote on CSI’s approach to executive compensation through consideration of the following advisory resolution:

Be it resolved, on an advisory basis and not to diminish the role and responsibilities of the board of directors of CSI, that the approach to executive compensation disclosed in the management information circular of CSI dated March 28, 2026 is accepted.

As the vote is advisory, it will not be binding upon the Board; however, the CNHR Committee will take into account the results of the vote when considering future executive compensation arrangements.

The Board recommends that shareholders vote IN FAVOUR of the above resolution.

OTHER MATTERS WHICH MAY COME BEFORE THE MEETING

Management knows of no matters to come before the Meeting other than the matters referred to in the Notice of the Meeting. However, if any other matters which are not now known to management should properly come before the Meeting, the proxy solicited hereby will be voted on such matters in accordance with the best judgment of the persons voting the proxy.

ADDITIONAL INFORMATION

Additional information relating to the Corporation is available on SEDAR+ at www.sedarplus.com and also on the Corporation's website at www.csisoftware.com. A comprehensive description of the Corporation and its business as well as a summary of the risk factors applicable to the Corporation are set out in the Corporation's Annual Information Form ("AIF"). Financial information is provided in the 2025 MD&A and Financials, which are available at www.sedarplus.com. Copies of the Corporation's AIF, together with any documents incorporated by reference therein; the Corporation's most recently filed annual consolidated financial statements, together with the accompanying report of the independent auditor, and any of the Corporation's condensed consolidated interim financial statements that have been filed for any period after the end of the Corporation's most recently completed financial year; annual and interim management's discussion and analysis and this Circular are available without charge to shareholders of the Corporation, upon request, from the Corporation at:

Constellation Software Inc.
66 Wellington Street West, Suite 5300
TD Bank Tower, Toronto, Ontario, Canada
M5K 1E6
Email: [email protected]

For certain information with respect to the Corporation's Audit Committee, including its charter and composition, the relevant education and experience of its members, and services fees paid to the Corporation's external auditors, please refer to the section entitled "Committees of the Board of Directors" in the Corporation's most recently filed AIF.

DIRECTORS' APPROVAL

The contents of this Circular and the delivery thereof to the shareholders of the Corporation has been approved by the Board of Directors.

DATED the 28th day of March 2026.

ON BEHALF OF THE BOARD OF DIRECTORS

John Billowits
Chairman

SCHEDULE “A”

NATIONAL INSTRUMENT 58-101

DISCLOSURE OF CORPORATE GOVERNANCE PRACTICES

1. Board of Directors

The board of directors of the Corporation (the “Board of Directors” or the “Board”) is currently composed of ten members. All Board members, with the exception of Mark Leonard, Jamal Baksh, and Mark Miller are independent according to the definition of “independence” set out in NI 58-101 as it applies to the Board of Directors. Mark Miller and Jamal Baksh are not independent because they are executive officers of the Corporation. Mark Leonard is not independent because he was an executive officer of the Corporation within the last three years. As seven of the ten existing directors are independent, the Corporation has deemed the majority of the Board to be independent.

Following the Meeting, the Board is expected to be composed of nine members. Assuming each of the members proposed for election are elected as directors at the Meeting, all Board members, with the exception of Jamal Baksh and Mark Miller will be independent according to the definition of “independence” set out in NI 58-101 as it applies to the Board of Directors. Mark Miller and Jamal Baksh will not be independent because they are executive officers of the Corporation. As seven of the nine directors will be independent, the Corporation has deemed the majority of the Board will be independent following the Meeting.

The following directors are currently directors of other issuers that are reporting issuers (or the equivalent) in a jurisdiction of Canada or a foreign jurisdiction:

Name	Director of Other Issuer
Mark Miller	Lumine Group Inc.
Andrew Pastor	Computer Modelling Group Ltd.
John Billowits	Topicus.com Inc.
HgCapital Trust Plc
Donna Parr	Topicus.com Inc.
Laurie Schultz	Lumine Group Inc.
Claire Kennedy	Alamos Gold Inc.
Lawrence Cunningham	Markel Group Inc.

At regularly scheduled meetings of the Board of Directors, the independent directors hold in camera sessions while members of management are not in attendance. The Board held four in camera sessions during fiscal 2025. The Audit Committee holds in camera sessions with only the external auditors present. The Compensation, Nominating and Human Resources (“CNHR”) Committee consists only of independent directors with management attending only by invitation.

Since the beginning of the fiscal year ended December 31, 2025, the Board of Directors held ten meetings. The attendance of the individual directors was as follows:

Director	Number of Meetings Attended
Mark Leonard***	9/10
Robert Kittel	10/10
Jeff Bender*	6/6

Director	Number of Meetings Attended
Mark Miller***	6/6
Lawrence Cunningham	10/10
Robin Van Poelje*	6/6
Lori O’Neill*	6/6
Dexter Salna*	5/6
Susan Gayner*	6/6
John Billowits	10/10
Barry Symons*	6/6
Donna Parr	10/10
Andrew Pastor	10/10
Claire Kennedy	10/10
Laurie Schultz	9/10
Jamal Baksh*	4/4
Mr. Bender, Mr. Van Poelje, Ms. O’Neill, Mr. Salna, Ms. Gayner and Mr. Symons did not stand for re-election to the Board on May 13, 2025.Mr. Baksh was elected to the Board on May 13, 2025. Mr. Miller did not stand for re-election to the Board on May 13, 2025 and was subsequently appointed to the Board on December 9, 2025.* Mr. Leonard is not standing for re-election to the Board.

Since the beginning of the fiscal year ended December 31, 2025, the Audit Committee held four meetings. The attendance of the individual directors was as follows:

Director	Number of Meetings Attended
Susan Gayner*	2/2
Lori O’Neill*	2/2
Robert Kittel	4/4
Laurie Schultz**	2/2
Claire Kennedy**	2/2
Ms. O’Neill and Ms. Gayner did not stand for re-election to the Board on May 13, 2025. *Ms. Schultz and Ms. Kennedy joined the Audit Committee on May 13, 2025.

Since the beginning of the fiscal year ended December 31, 2025, the CNHR Committee held six meetings. The attendance of the individual directors was as follows:

Director	Number of Meetings Attended
Robert Kittel	6/6
Lawrence Cunningham	6/6
Andrew Pastor	6/6

2. Board Mandate

The Board of Directors is responsible for the stewardship of the Corporation, ensuring that long-term value is being created for its shareholders. The Board has adopted a written charter to formalize their responsibilities, a copy of which is attached as Annex I hereto.

Position Descriptions

There are no specific written position descriptions for the Chairman of the Board, the Chairs of the various Board Committees or the President. The Board and each Committee has a written mandate pursuant to which its members and Chairs can be assessed. The President’s role and responsibilities are assessed periodically by the Board. The role of the Chairman of the Board is to set agendas, ensure that the Board functions effectively, act as a liaison between management and the Board, and coordinate the activities of the committees with the work of the Board. The role of the chair of each committee is to set agendas, ensure that the committee functions effectively and report to the Board on committee business.

Orientation and Continuing Education

While the Corporation does not have a formal orientation program for new members of the Board, the President and other members of senior management are and will continue to be available to Board members to discuss the Corporation’s business and assist in the orientation and education of Board members as required. As part of the orientation process, new Board members are provided with copies of the Corporation’s relevant financial data and have the opportunity to attend management meetings.

The Board does not formally provide continuing education to its directors; however, the directors are experienced members, the majority of whom are or have been directors on boards of other companies. The Board of Directors relies on professional assistance when considered necessary in order to be educated or updated on a particular topic.

Ethical Business Conduct

The Corporation has not adopted a written code of conduct and ethics. The Board’s mandate requires that business be conducted ethically and in compliance with applicable laws and regulations. In addition, most employees and officers of the Corporation have signed employment contracts that require that ethical and lawful behaviour must be exhibited at all times. In addition, most of the subsidiaries of the Corporation have codes of conduct in place and available to their employees which further outline what behaviour is/is not tolerated. Lastly, the Corporation has established a whistleblower policy which outlines the procedures for the receipt, retention and treatment of complaints regarding accounting, internal accounting control or auditing matters as well as other issues.

Under the OBCA, to which the Corporation is subject, a director or officer of the Corporation must disclose to the Corporation, the nature and extent of any interest that he or she has in a material contract or material transaction, whether made or proposed, with the Corporation, if the director or officer: (a) is a party to the contract or transaction; (b) is a director or an officer, or an individual acting in a similar capacity, of a party to the contract or transaction; or (c) has a material interest in a party to the contract or transaction. Subject to limited exceptions set out in the OBCA, the director cannot vote on any resolution to approve the contract or transaction and must recuse himself or herself from the decision-making process pertaining to a contract or transaction in which he or she has an interest.

6. Nomination of Directors

The Board of Directors has delegated to the CNHR Committee the responsibility for identifying new candidates for Board nomination and proposing such nominees to the Board. Board members or management may suggest candidates for consideration by the Committee. Prospective candidates are interviewed by the President and by other Board members on an ad hoc basis.

All of the members of the CNHR Committee are independent according to the definition of “independence” set out in NI 58-101. The powers and responsibilities of the CNHR Committee are set out in the CNHR Committee’s written mandate, a copy of which is attached as Annex II hereto.

7. Compensation

The Board periodically reviews the remuneration of directors and makes adjustments where considered necessary. The CNHR Committee considers responsibilities, skills and competitive compensation in determining remuneration. With respect to the compensation of the Corporation’s officers, see “Compensation Discussion and Analysis” above.

The Board of Directors has established the CNHR Committee whose primary role and responsibility concerns human resources and compensation policies and processes, including:

Ensuring that the Corporation’s compensation programs balance the needs of shareholders and employees;
Reviewing and approving total remuneration of the President and other senior executives and the total allowance for increases to other employees;
Monitoring the Corporation’s succession plans; and
As required, recommending candidates for the Corporation’s Board of Directors.

The following sets out the relevant education and experience of each director relevant to the performance of his duties as a member of the CNHR Committee:

Mr. Kittel is the President of Saranac Capital Inc., a personal investment holding company and a corporate director. Mr. Kittel was the Chief Operating Officer of Westaim Canada Services Corporation. He also served as a director on several public boards, both in Canada and the United States. Mr. Kittel holds a BBA Honours (Gold Medalist) from Wilfrid Laurier University and is a Chartered Professional Accountant and a Chartered Financial Analyst.

Mr. Cunningham is the Presiding Director of the John L. Weinberg Center for Corporate Governance at the University of Delaware and Professor Emeritus at The George Washington University. He has served on numerous public and private boards. He is a Trustee of the Museum of American Finance. Previous positions include practicing corporate law with Cravath, Swaine & Moore; Academic Dean of Boston College Law School; and Director of the Heyman Center on Corporate Governance at Cardozo Law School. Prof. Cunningham holds a bachelor’s degree in

economics (with honors) from the University of Delaware and a juris doctor (law) degree from Cardozo (magna cum laude).

Corporate objectives are established periodically by the Board of Directors. Executive performance is assessed at least annually by the CNHR Committee against those objectives. No compensation consultant or advisor was retained by the Corporation during the fiscal year ended December 31, 2025.

8. Other Board Committees

Other than the Audit Committee and CNHR Committee, the Board does not have any other committees in place.

The Board has established an advisory board including key leaders within the Corporation’s management team, as well as external advisors. The purpose of the advisory board is to provide the Board with strategic, technological, investing and operating advice and insights stemming from the advisory board members’ specialized knowledge, experience and perspective. The advisory board will meet concurrently with the Board, except when issues involving potential conflicts of interest are being considered. The advisory board consists of Jeff Bender (Executive Chairman of Harris Operating Group), Barry Symons (Chief Executive Officer of Jonas Operating Group), Dexter Salna (member of Perseus Operating Group board of directors), Robin van Poelje (Chief Executive Officer and Chairman of Topicus.com Inc.), Damian McKay (Chief Executive Officer of Vela Operating Group), Bernard Anzarouth (Chief Investment Officer), and former members of the Corporation’s board of directors, Susan Gayner and Steve Scotchmer. Unlike Board members who are subject to certain formalities and regulatory requirements, the advisory board members, as deeply experienced leaders, will be expected to contribute meaningfully to Board discussions without being obliged to shoulder all of the responsibilities required of Board members.

9. Assessments

Each Committee reviews and assesses the adequacy of its Committee mandate on a periodic basis and recommends any proposed changes to the Board for approval. The Board in conjunction with the President periodically reviews and assesses the effectiveness of the Board as a whole, the membership of the Board committees, the mandates and activities of each committee and the contribution of individual directors. Feedback is obtained from members of the Board and the various Committees on an informal basis, which the Board believes is sufficient to address any changes that may be necessary or desirable.

10. Term Limits

CSI does not have term limits for directors. While there is benefit to adding new perspectives to the Board from time to time, there are also benefits to be achieved by continuity and directors having in-depth knowledge of CSI’s businesses. CSI’s Board believes that the key to effective leadership is to choose directors and officers that, having regard to a wide array of factors, possess the range of necessary skills, experience, commitment and qualifications that are best suited to fostering effective leadership and decision-making at the Corporation.

11. Representation of Women and Diverse Persons on the Board and in Executive Officer Positions

CSI currently has three women directors (30% of the existing total), Claire Kennedy, Laurie Schultz and Donna Parr and one woman (10% of the existing total), Bonnie Wilhelm, in an

executive officer (as defined in National Instrument 58-101) position. Assuming each of the members proposed for re-election are elected as directors at the Meeting, subsequent to the Meeting CSI is expected to have three women directors (33% of the post-Meeting total), Claire Kennedy, Laurie Schultz and Donna Parr. CSI has one racially or ethnically diverse persons on the Board (10% of the existing total), Jamal Baksh. CSI does not have a formal written policy on the representation of women or diverse persons on the Board or in senior management and has not adopted a formal written policy or targets with respect to such representation, as the Board does not believe that quotas or strict rules result in the identification or selection of the best candidates. The CNHR Committee will recommend candidates for the Board of Directors, based on, among other things, their wisdom, long-term orientation, shareholder alignment, belief in the motivational power of autonomy and decentralisation, experience with successful capital allocation, diversity, age, and track record of exercising sound judgment.

ANNEX I

BOARD MANDATE

CONSTELLATION SOFTWARE INC.

CORPORATE GOVERNANCE BOARD OF DIRECTORS

MANDATE

The Board of Directors is responsible for the stewardship of the Corporation, ensuring that long-term value is being created for its shareholders.

BOARD COMPOSITION

The Board of Directors shall be comprised of a majority of independent Directors. The number of Directors may be set from time to time by the Board within the minimum and maximum numbers approved by the shareholders.

The Directors shall be elected by the shareholders, except as permitted by the Ontario Business Corporations Act. Where a vacancy arises the Compensation, Nominating and Human Resources (“CNHR”) Committee will recommend an appropriate person to fill such vacancy, at the Board’s discretion, or the Board may decide to reduce the size of the Board. The Board will appoint a Chairman and a Corporate Secretary. The Chairman shall be designated from among the members of the Board. A lead Director will be chosen each year to act as Chairman in instances when the Board meets without the Chairman being present. The Board may from time to time appoint a Vice Chairman.

MEETINGS AND BOARD PROCESS

The Board shall meet at least five times per year, once after each quarter, and once when the drafts of the Annual Information Form, Annual Report, and Proxy have been prepared. The Board will meet more frequently if circumstances dictate.

Board meetings will allow for input from all Board members. Any Director may request that the lead Director co-ordinate a meeting of the non-management members of the Board. Board and Board Committee liaison with the Corporation will be principally through the President. The Board may, from time to time, assign specific duties and tasks to individuals or committees.

Audit and CNHR Committees have been established. Each of the Committees shall operate under a written Mandate document approved by the Board. The two standing Committees of the Board shall be comprised entirely of non-management Directors. The Board receives regular reports from the Committees.

Periodically, the Board will evaluate the effectiveness of the Board as a whole and ensure that appropriate succession plans are in place. This may include: Reviewing the process for nominating, orienting, and remunerating Board members, determining the committees required, and changing the mandates for the committees.

The Board has the authority to conduct any investigation appropriate to fulfilling its responsibilities, and has direct access to the books, records, facilities and personnel of the organization. The Board has the ability to retain, at the Corporation’s expense, special legal, accounting or other consultants or experts it deems necessary in the performance of its duties.

RESPONSIBILITIES

The Board members shall ensure that:

All Board members understand the business of the Corporation;
Processes are in place to effectively plan, monitor and manage the long-term viability of the Corporation;
There is a balance between long and short-term goals and risks;
Management's performance is adequate and that an adequate management succession plan is in place;
Communication with shareholders and other stakeholders is timely and effective;
Business is conducted ethically and in compliance with applicable laws and regulations; and
All matters requiring shareholder approval are referred to them.

OPERATIONAL MATTERS

In the process of executing its responsibilities the Board will:

Review corporate performance on a quarterly basis;
Periodically adjust hurdle rates used to assess acquisitions;
Review and approve all business acquisitions over certain thresholds (the Board of Directors may change the threshold requiring approval);
Review and approve divestitures;
Review and approve dividend payments;
Ensure that management compensation is appropriate;
Review and approve company banking and borrowing resolutions;
Review and approve any changes in the issued shares;
Review accounting policies, internal control and audit procedures;
Review and approve the Annual Information Form and proxy for the annual meeting of shareholders;
Review and approve the annual financial statements and the interim consolidated quarterly results;
Recommend to the shareholders the appointment of auditors and their remuneration; and
Provide advice to management.

ANNEX II

COMPENSATION, NOMINATION AND HUMAN RESOURCE (“CNHR”)

COMMITTEE MANDATE

The purpose of the CNHR Committee is to assist, and where appropriate, make recommendations to the Board of Directors and President concerning matters relating to the Corporation’s employees and directors.

The Committee exists at the pleasure of the Board, and its Mandate may be changed by the Board at any time.

Responsibilities

The CNHR Committee’s duties and responsibilities are to:

Ensure the Corporation’s compensation programs balance the needs of shareholders and employees;
Review and approve total remuneration of the President and other senior executives;
Review the Corporation’s succession plans;
Develop a pool of potential director candidates for consideration in the event of a vacancy on the Board, and as part of such development efforts, identify highly qualified women and highly qualified individuals from minority groups to include in the pool of candidates;
As required, recommend candidates for the Corporation’s Board of Directors, based on, among other things, their wisdom, long-term orientation, shareholder alignment, belief in the motivational power of autonomy and decentralisation, experience with successful capital allocation, diversity, age, and track record of exercising sound judgment; and
Consider matters of corporate governance and periodically review the Corporation’s corporate governance policies and guidelines and recommend to the Board modifications to such policies and guidelines as appropriate.

Composition

The CNHR Committee shall be comprised of two or more directors, at least two of whom will be independent, as determined and appointed by the Board.

The Committee may elect its own chairman and secretary. The secretary to the Committee need not be a member of the Committee.

Meetings

The Committee shall meet at least twice per year and more frequently if circumstances dictate. The Chairman shall report on the Committee’s activities and make recommendations to the Board for approval.

Committee liaison with the Corporation will be principally through the President.

The Committee has the authority to conduct any investigation appropriate to fulfilling its responsibilities, and has direct access to the books, records, facilities and personnel of the organization. The CNHR Committee has the ability to retain, at the Corporation’s expense, special legal, accounting or other consultants or experts it deems necessary in the performance of its duties.

AI assistant

Constellation Software Inc. — Proxy Solicitation & Information Statement 2026

45800_rns_2026-04-09_32c924bd-910f-40f8-80f7-99ce5d71093d.pdf

CONSTELLATION SOFTWARE INC.

MANAGEMENT INFORMATION CIRCULAR FOR THE ANNUAL MEETING OF SHAREHOLDERS TO BE HELD ON MAY 15, 2026

SOLICITATION OF PROXIES

MEETING INFORMATION

VOTING BEFORE THE MEETING

Appointment and Revocation of Proxies

Notice-and-Access

Non-Registered Holders

Exercise of Discretion by Proxies

VOTING AT THE MEETING

General

Appointment of a Third Party as Proxy

How do I Attend and Participate at the Meeting?

Attending the Meeting In Person

Attending the Meeting via Live Video Webcast

COMPENSATION OF EXECUTIVE OFFICERS

COMPENSATION DISCUSSION AND ANALYSIS

Objectives of the Corporation’s Executive Compensation Program

Base Salary

Annual Incentive Bonus

Investment of Annual Incentive Bonus in Constellation shares

Mark Leonard's Compensation

Mark Miller's Compensation

Share Performance Graph

Summary Compensation Table

Employment Agreements

Compensation of Non-Employee Directors

Directors' and Officers' Liability Insurance

STATEMENT OF CORPORATE GOVERNANCE PRACTICES

INDEBTEDNESS OF DIRECTORS AND EXECUTIVE OFFICERS

Claire Kennedy - Director

Robert Kittel - Director

Lawrence Cunningham - Director and Vice Chairman of the Board

John Billowits - Director and Chairman of the Board

Andrew Pastor – Director

Donna Parr – Director

Laurie Schultz — Director

Jamal Baksh – Director and Chief Financial Officer

OTHER MATTERS WHICH MAY COME BEFORE THE MEETING

ADDITIONAL INFORMATION

DIRECTORS' APPROVAL

SCHEDULE “A”

NATIONAL INSTRUMENT 58-101

DISCLOSURE OF CORPORATE GOVERNANCE PRACTICES

1. Board of Directors

2. Board Mandate

6. Nomination of Directors

7. Compensation

8. Other Board Committees

9. Assessments

10. Term Limits

11. Representation of Women and Diverse Persons on the Board and in Executive Officer Positions

ANNEX I

BOARD MANDATE

CONSTELLATION SOFTWARE INC.

CORPORATE GOVERNANCE BOARD OF DIRECTORS

MANDATE

BOARD COMPOSITION

MEETINGS AND BOARD PROCESS

RESPONSIBILITIES

OPERATIONAL MATTERS

Responsibilities

Composition

Meetings

More from Constellation Software Inc.

Constellation Software Inc. Proxy Solicitation & Information Statement 2026