Weir Group Inc. — AGM Information 2023

Mar 21, 2023

NOTICE OF ANNUAL GENERAL MEETING 2023

THURSDAY 27 APRIL 2023 AT 2.30P.M. 1 WEST REGENT STREET, GLASGOW G2 1RW

THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION

If you are in any doubt as to the action you should take, you are recommended to seek your own personal financial advice immediately from your stockbroker, bank manager, solicitor, accountant, fund manager or other appropriate independent financial adviser, who is authorised under the Financial Services and Markets Act 2000 if you are in the United Kingdom, or, if not, from another appropriately authorised independent financial adviser.

If you have sold or otherwise transferred all your shares in The Weir Group PLC, you should at once forward this document and the accompanying proxy card to the purchaser or transferee, or to the bank or stockbroker or other agent through whom the sale or transfer was effected, for transmission to the purchaser or transferee.

LETTER TO SHAREHOLDERS

The Weir Group PLC (the 'Company') Registered in Scotland No. SC002934 Registered Office: 1 West Regent Street Glasgow G2 1RW Scotland

Dear Shareholder

21 March 2023

ANNUAL GENERAL MEETING 2023

I am writing to invite you to our 2023 Annual General Meeting, which is due to be held at our Head Office at 1 West Regent Street, Glasgow, on Thursday 27 April 2023 at 2.30p.m.

Shareholders are asked to please exercise their votes by submitting their proxy electronically or by post. Further information on the ways you can appoint a proxy is given in note 6 to the Notice of Annual General Meeting on page 7.

Should a Shareholder have a question that they would like to raise at the meeting, we ask that Shareholders email their questions in advance to WeirAGM2023@mail.weir, or send by post to the Company's Head Office to be received no later than close of business on 25 April 2023. Shareholders (or their duly appointed proxies) attending the Annual General Meeting will still have the opportunity to ask questions at the Annual General Meeting.

As announced on 1 March 2023 and subject to Shareholder approval, a final dividend of 19.3 pence per ordinary share will be paid on 5 June 2023 to all Shareholders who are on the register of members of the Company on 21 April 2023. On 2 March 2023, we received approval from the Science Based Targets initiative (SBTi) of the new more ambitious scope 1, 2 and 3 emissions reduction targets that we submitted for validation in 2022. Our approved targets were published on both SBTi and Weir Group's websites on 9 March 2023.

The consideration of resolutions at the Annual General Meeting is important. Your Directors believe that it is essential that the voting intentions of all Shareholders are taken into account. It is for this reason that we strongly encourage Shareholders to exercise their votes in advance by submitting their proxy electronically or by post.

The Notice for this year's Annual General Meeting is contained on pages 5 to 6 of this document. The purpose of this letter is to provide some background to the business to be transacted at the Annual General Meeting. Resolutions 1 to 16 inclusive are proposed as ordinary resolutions, while resolutions 17 to 20 inclusive are proposed as special resolutions.

If there are any changes to the arrangements for the Annual General Meeting described in this document, updates will be provided on our website: https://www.global.weir/

THE 2022 ANNUAL REPORT (RESOLUTION 1)

Shareholders are being asked to receive the Annual Report and Financial Statements for the year ended 31 December 2022 (the '2022 Annual Report').

REMUNERATION REPORT (RESOLUTION 2)

Shareholders are invited to approve the Directors' Remuneration Report which is contained in the 2022 Annual Report on pages 111 to 113. The report gives details of the Directors' remuneration for the year ended 31 December 2022. In line with relevant legislation, this vote will be advisory and does not affect the future remuneration paid to any Director.

At the 2022 Annual General Meeting, the Directors' Remuneration Policy was approved by Shareholders. The Directors' Remuneration Policy is not therefore required to be approved at this year's Annual General Meeting. The policy will be put to Shareholders again no later than the Annual General Meeting in 2025.

FINAL DIVIDEND (RESOLUTION 3)

Subject to Shareholder approval, a final dividend of 19.3p per ordinary share will be paid on 5 June 2023 to all Shareholders who are on the register of members of the Company on 21 April 2023.

ELECTION AND RE-ELECTION OF THE BOARD (RESOLUTIONS 4-13)

In accordance with the UK Corporate Governance Code 2018, all Directors are offering themselves for election or re-election at the Annual General Meeting are outlined in resolutions 4-13 save for Mary Jo Jacobi and Ebbie Haan who, as previously announced, will retire from the Board at the conclusion of the Annual General Meeting this year. Separate resolutions will be proposed for each Director's election or re-election.

Dame Nicola Brewer and Tracey Kerr have been appointed as Directors since last year's Annual General Meeting. The skills and experience that Nicola and Tracey bring to the Board are outlined in Appendix 1 to the Notice of Annual General Meeting.

The Board Performance Review conducted during 2022 (as explained in more detail on page 91 of the 2022 Annual Report) concluded that each Director continues to make a positive and effective contribution to the Board and demonstrates commitment to the role. The Board has considered whether each of the independent Non-Executive Directors is free from any relationship that could materially interfere with the exercise of their independent judgement and has determined that each continues to be considered to be independent. Biographies of all the Directors standing for re-election, including the reasons why their contribution to the Company is important to its long-term sustainable success, are set out in Appendix 1 to the Notice of Annual General Meeting, in the 2022 Annual Report and on the Company's website www.global.weir.

RE-APPOINTMENT OF AUDITORS AND DETERMINING THE AUDITORS' REMUNERATION (RESOLUTIONS 14 AND 15)

Resolution 14 seeks to re-appoint PricewaterhouseCoopers LLP as the Company's auditors to hold office until the conclusion of the next general meeting of the Company at which accounts are laid, while resolution 15 authorises the Company's Audit Committee to determine the auditors' remuneration.

AUTHORITY TO ALLOT SHARES (RESOLUTION 16)

Under section 551 of the Companies Act 2006, the Directors may only allot shares or grant rights to subscribe for or convert any securities into shares if authorised to do so by Shareholders. The Investment Association ('IA') guidelines on Directors' authority to allot shares state that IA members will regard as routine resolutions seeking authority to allot shares representing up to two-thirds of a company's issued share capital. In accordance with IA guidelines, one half of that section 551 authority (equal to one third of the Company's issued ordinary share capital, excluding treasury shares, as at 14 March 2023 being the latest practicable date prior to publication of the Notice of Annual General Meeting (the 'Latest Practicable Date')) will only be applied (if at all) to fully pre-emptive rights issues. In light of these guidelines, this resolution will, if passed, authorise the Directors to allot ordinary shares or grant rights to subscribe for or convert any securities into ordinary shares up to an aggregate nominal amount of £21,634,337.50 representing 173,074,700 shares ordinary shares of 12.5p each) such amount being equal to approximately two-thirds of the issued ordinary share capital of the Company as at the Latest Practicable Date.

As at the Latest Practicable Date, 1,465 ordinary shares were held by the Company in treasury, which represents approximately 0.0006% of the total issued share capital of the Company (excluding shares held in treasury) as at that date.

The authority sought under this resolution will expire at the conclusion of the next Annual General Meeting of the Company or on 26 July 2024, whichever is the earlier.

The Directors have no present intention to exercise the authority sought under this resolution and do not intend to issue any shares other than pursuant to The Weir Group Share Reward Plan 2018 (the 'SRP') or The Weir Group PLC All-Employee Share Ownership Plan ('Weir ShareBuilder') however, the Directors may consider doing so if they believe it would be appropriate in respect of business opportunities that may arise consistent with the Company's strategic objectives and consider it desirable to have the maximum flexibility permitted by corporate governance guidelines.

PARTIAL DISAPPLICATION OF PRE-EMPTION RIGHTS (RESOLUTIONS 17 AND 18)

Resolutions 17 and 18 will give the Directors authority to allot ordinary shares in the capital of the Company pursuant to the authority granted under Resolution 16 above for cash without complying with the pre-emption rights in the Companies Act 2006 in certain circumstances. Both will be proposed as special resolutions.

The Pre-Emption Group's Statement of Principles were revised in November 2022 (the "Pre-Emption Group Principles") to allow companies to seek authority for an issue of shares for cash otherwise than in connection with a pre-emptive offer to include: (i) an authority up to 10% of a company's issued share capital for use on an unrestricted basis; and (ii) an additional authority up to a further 10% of a company's issued share capital for use in connection with an acquisition or specified capital investment announced contemporaneously with the issue, or has taken place in the twelve month period preceding the announcement of the issue. In both cases, an additional authority of up to 2% may be sought for the purposes of making a follow-on offer.

Having considered the revised Pre-Emption Group Principles, the Directors consider it appropriate to continue to seek disapplication authorities in line with its previous practice being over 5% of the Company's issued share capital for use on an unrestricted basis and a further 5% for use in connection with an acquisition or specified capital investment. This level of authority is in line with institutional shareholder guidance and within the limits set out the Pre-Emption Group Principles as described above. The Board considers that it is in the best interests of the Company and its Shareholders generally that the Company have the flexibility conferred by Resolutions 17 and 18 to conduct a pre-emptive offering without complying with the strict requirements of the statutory pre-emption provisions and to finance business opportunities quickly and efficiently when they arise. The Directors confirm their intention to follow the shareholder protections contained in Part 2B of the Pre-emption Group Principles.

Resolution 17 will therefore permit the directors to allot:

(a) equity securities for cash and sell treasury shares up to a nominal amount of £21,634,337.50, representing two-thirds of the company's issued share capital as at the Latest Practicable Date on an offer to existing Shareholders on a pre-emptive basis (that is including a rights issue or an open offer), with one-third being available only in connection with a rights issue (in each case subject to any adjustments, such as for fractional entitlements and overseas Shareholders, as the Directors see fit); and

(b) equity securities for cash and sell treasury shares up to a maximum nominal value of £1,622,575, representing approximately 5% of the issued ordinary share capital of the Company as at the Latest Practicable Date otherwise than in connection with a pre-emptive offer to existing Shareholders.

LETTER TO SHAREHOLDERS CONTINUED

Resolution 18 will permit the directors to allot additional equity securities for cash and sell treasury shares up to a maximum nominal value of £1,622,575, representing approximately a further 5% of the issued ordinary share capital of the Company as at the Latest Practicable Date, otherwise than in connection with a pre-emptive offer to existing Shareholders for the purposes of financing or refinancing a transaction as contemplated by the Pre-Emption Group Principles described above.

As noted in relation to Resolution 16 above, the Directors have no current intention of issuing ordinary shares other than in relation to the Company's SRP and Weir ShareBuilder share schemes.

The authority contained in Resolutions 17 and 18 will expire upon the expiry of the authority to allot shares conferred in Resolution 16 (that is at the end of the next AGM of the Company or, if earlier, on or, if earlier, on 26 July 2024).

AUTHORITY TO PURCHASE OWN SHARES (RESOLUTION 19)

At last year's Annual General Meeting, the Company was authorised, in accordance with its Articles of Association and within institutional Shareholder guidelines, to purchase its own shares. No such purchases have been made using this authority. The Directors are seeking renewal of this authority for a further year. Accordingly, this resolution, which will be proposed as a special resolution, seeks authority to make market purchases up to a maximum of 25,961,205 ordinary shares (being approximately 10% of the Company's issued share capital as at the Latest Practicable Date, excluding shares in treasury) and specifies the maximum and minimum purchase prices for the shares. It is the Company's current intention to hold any shares purchased in treasury for use in connection with the SRP or Weir ShareBuilder. However, in order to respond properly to the Company's capital requirements and prevailing market conditions, the directors will reassess at the time of any and each actual purchase whether to hold the shares in treasury or cancel them, provided it is permitted to do so. A maximum of 10% of the Company's issued share capital may be held as treasury shares. As at the Latest Practicable Date, there were 1,592,543 awards outstanding to subscribe for ordinary shares under the Company's share plans. If the outstanding awards were fully exercised, they would represent approximately 0.6% of the issued share capital of the Company (excluding shares held in treasury). If the buyback authority was exercised in full, pursuant to this resolution, then the number of awards to subscribe for shares outstanding as at the Latest Practicable Date would represent 0.68% of the reduced share capital of the Company (excluding shares held in treasury).

This authority will expire at the conclusion of the next Annual General Meeting of the Company or on 26 July 2024, whichever is earlier. Purchases of shares either for cancellation or to be held in treasury would only be undertaken within the limits of the Company's available reserves and only if, in the opinion of the Directors, they are expected to enhance earnings per share or otherwise benefit the overall financial position of the Company.

NOTICE OF GENERAL MEETINGS (RESOLUTION 20)

Resolution 20 is a resolution to allow the Company to hold general meetings (other than annual general meetings) on 14 clear days' notice. The minimum notice period permitted by the Companies Act 2006 for general meetings is 21 clear days unless Shareholders approve a shorter notice period, which cannot be less than 14 clear days (annual general meetings must always be held on at least 21 clear days' notice).

The Companies Act 2006 also requires, in order for the Company to be able to call a general meeting on less than 21 clear days' notice, that it offers a facility for Shareholders to vote by electronic means. This condition is met if the Company offers a facility, accessible to all Shareholders, to appoint a proxy by means of a website. The Board is confident that electronic means of voting are or can be made available to all the Company's registered Shareholders. It is, therefore, proposing resolution 20 as a special resolution to approve 14 clear days as the minimum period of notice for all general meetings of the Company other than annual general meetings. The approval will be effective until the end of the Company's next Annual General Meeting, when it is intended that the approval be renewed. The shorter notice period would not be used as a matter of course for such meetings, but only where, taking into account the circumstances the Directors consider that the flexibility is merited by the business of the meeting and is to the advantage of Shareholders as a whole.

RECOMMENDATION AND ACTION TO BE TAKEN

The Board believes that the attached resolutions are in the best interests of the Company and its Shareholders and the Directors recommend that you give them your full support by voting in favour of the resolutions, which they intend to do in respect of their own beneficial holdings.

You will find enclosed a proxy card which you are requested to complete and return in accordance with the instructions printed thereon as soon as possible, but in any event to be received not less than 48 hours before the Annual General Meeting.

BARBARA JEREMIAH Chair of The Weir Group PLC

21 March 2023

NOTICE OF ANNUAL GENERAL MEETING

Notice is hereby given that the one hundred and twenty-nineth Annual General Meeting of The Weir Group PLC (the 'Company') will be held at the Company's Head Office, 1 West Regent Street, Glasgow G2 1RW, on 27 April 2023 at 2.30p.m. for the purpose of transacting the following business:

To consider and, if thought fit, pass resolutions 1 to 16 inclusive as ordinary resolutions and resolutions 17 to 20 inclusive as special resolutions:

• 1. That the audited financial statements of the Company for the year ended 31 December 2022 and the Reports of the Directors and Auditors of the Company thereon, be received.
• 1. That the Directors' Remuneration Report (excluding the Directors' Remuneration Policy) contained on pages 111 to 134 of the Annual Report and Financial Statements of the Company for the year ended 31 December 2022 be approved.
• 1. That a final dividend for the year ended 31 December 2022 of 19.3p pence per ordinary share of 12.5 pence each in the capital of the Company, payable on 5 June 2023 to those Shareholders on the register of members of the Company at the close of business on 21 April 2023, be declared.
• 1. That Barbara Jeremiah be re-elected as a Director of the Company.
• 1. That Jon Stanton be re-elected as a Director of the Company.
• 1. That John Heasley be re-elected as a Director of the Company.
• 1. That Dame Nicole Brewer be elected as a Director of the Company.
• 1. That Clare Chapman be re-elected as a Director of the Company.
• 1. That Tracey Kerr be elected as a Director of the Company.
• 1. That Ben Magara be re-elected as a Director of the Company.
• 1. That Sir Jim McDonald be re-elected as a Director of the Company.
• 1. That Srinivasan Venkatakrishnan be re-elected as a Director of the Company.
• 1. That Stephen Young be re-elected as a Director of the Company.
• 1. That PricewaterhouseCoopers LLP be re-appointed as auditors of the Company to hold office from the conclusion of the Annual General Meeting until the conclusion of the next general meeting at which accounts are laid before the Company.
• 1. That the Company's Audit Committee be authorised to determine the remuneration of the auditors.
• 1. That the Directors of the Company be and are hereby generally and unconditionally authorised for the purposes of section 551 of the Companies Act 2006, in substitution for all existing authorities to the extent unused, to exercise all the powers of the Company to allot shares in the Company and to grant rights to subscribe for, or to convert any security into, shares in the Company:
• (a) up to an aggregate nominal amount of £10,817,168.75;
• (b) up to a further aggregate nominal amount of £10,817,158.75 provided that (i) they are equity securities (within the meaning of section 560(1) of the Companies Act 2006) and (ii) they are offered by way of a rights issue to holders of ordinary shares on the register of members at such record date as the Directors may determine where the equity securities respectively attributable to the interests of the Shareholders are proportionate (as nearly as may be practicable) to the respective numbers of shares held by them on any such record date, subject to such exclusions or other arrangements as the Directors may deem necessary or expedient to deal with treasury shares, fractional entitlements or legal or practical problems arising under the laws of any overseas territory or the requirements of any regulatory body or stock exchange or by virtue of shares being represented by depositary receipts or any other matter; and
• (c) provided that, the authority hereby conferred shall expire at the conclusion of the next Annual General Meeting of the Company or, if earlier, on 26 July 2024, save that the Company may before such expiry make any offer or agreement which would or might require equity securities to be allotted or such rights to be granted after such expiry and the Directors of the Company may allot equity securities and grant rights in pursuance of any such offer or agreement as if the authority conferred hereby had not expired.
• 1. That if resolution 16 is passed, the Board be authorised to allot equity securities (as defined in the Companies Act 2006) for cash under the authority given by that resolution and/or to sell ordinary shares held by the Company as treasury shares for cash as if section 561 of the Companies Act 2006 did not apply to any such allotment or sale, such authority to be limited:
• (a) to the allotment of equity securities or sale of treasury shares in connection with an offer of securities (but in the case of the authority granted under paragraph (b) of resolution 16 by way of rights issue only) in favour of the holders of ordinary shares on the register of members at such record dates as the Directors may determine and other persons entitled to participate therein where the equity securities respectively attributable to the interests of the ordinary Shareholders are proportionate (as nearly as may be practicable) to the respective numbers of ordinary shares held by them on any such record dates, subject to such exclusions or other arrangements as the Directors may deem necessary or expedient to deal with treasury shares, fractional entitlements or legal or practical problems arising under the laws of any overseas territory or the requirements of any regulatory body or stock exchange or by virtue of ordinary shares being represented by depositary receipts or any other matter; and

NOTICE OF ANNUAL GENERAL MEETING CONTINUED

• (b) to the allotment of equity securities or sale of treasury shares (otherwise than under paragraph (a) above) up to a nominal amount of £1,622,575, such authority to expire at the end of the next Annual General Meeting of the Company (or, if earlier, at the close of business on 26 July 2024) but, in each case, prior to its expiry the Company may make offers, and enter into agreements, which would, or might, require equity securities to be allotted (and treasury shares to be sold) after the authority expires and the Board may allot equity securities (and sell treasury shares) under any such offer or agreement as if the authority had not expired.
• 1. That if resolution 16 is passed, the Board be authorised in addition to any authority granted under resolution 16 to allot equity securities (as defined in the Companies Act 2006) for cash under the authority given by that resolution and/or to sell ordinary shares held by the Company as treasury shares for cash as if section 561 of the Companies Act 2006 did not apply to any such allotment or sale, such authority to be:
• (a) limited to the allotment of equity securities or sale of treasury shares up to a nominal amount of £1,622,575; and
• (b) used only for the purposes of financing (or refinancing, if the authority is to be used within twelve months after the original transaction) a transaction which the Board of the Company determines to be an acquisition or other capital investment of a kind contemplated by the Statement of Principles on Disapplying Pre-emption Rights most recently published by the Pre-emption Group prior to the date of this notice, such authority to expire at the end of the next Annual General Meeting of the Company (or, if earlier, at the close of business on 26 July 2024) but, in each case, prior to its expiry the Company may make offers, and enter into agreements, which would, or might, require equity securities to be allotted (and treasury shares to be sold) after the authority expires and the Board may allot equity securities (and sell treasury shares) under any such offer or agreement as if the authority had not expired.
• 1. That the Company be generally and unconditionally authorised for the purposes of section 701 of the Companies Act 2006 to make market purchases (within the meaning of section 693(4) of the Companies Act 2006) on the London Stock Exchange of ordinary shares of 12.5p each in the capital of the Company provided that:
• (a) the maximum aggregate number of ordinary shares hereby authorised to be purchased is 25,961,205 representing approximately 10% of the issued ordinary share capital of the Company as at 14 March 2023;
• (b) the minimum price (exclusive of expenses) which may be paid for each ordinary share is 12.5p;
• (c) the maximum price (exclusive of expenses) which may be paid for each ordinary share shall not be more than 5% above the average of the market values for an ordinary share as derived from the London Stock Exchange's Daily Official List for the five business days immediately preceding the date on which the ordinary share is purchased;
• (d) unless previously renewed, varied or revoked by the Company in general meeting, the authority hereby conferred shall expire at the conclusion of the next Annual General Meeting of the Company, or, if earlier, on 26 July 2024; and

• (e) the Company may make a contract or contracts to purchase ordinary shares under the authority conferred by this resolution prior to the expiry of such authority which will or may be executed wholly or partly after the expiry of such authority and may make a purchase of ordinary shares in pursuance of any such contract or contracts.

• That a general meeting of the Company, other than an Annual General Meeting, may be called on not less than 14 clear days' notice.

By order of the Board

GRAHAM VANHEGAN Company Secretary

Registered Office: 1 West Regent Street Glasgow G2 1RW Scotland

21 March 2023

NOTES

• 1. To be entitled to attend and vote at the Annual General Meeting (and for the purpose of determining the number of votes they may cast), Shareholders must be on the Company's register of members at 6.30p.m. on 25 April 2023 or, if this Annual General Meeting is adjourned, at 6.30p.m. on the day which is two days before the day of the adjourned meeting. Changes to the register of members after the relevant deadline shall be disregarded in determining the rights of any person to attend and vote (and the number of votes they may cast) at the Annual General Meeting, or adjourned meeting.
• 1. If you are attending the Annual General Meeting in person, please bring your attendance card with you. It authenticates your right to attend, speak and vote at the Annual General Meeting and will speed your admission. You may find it useful to also bring the Notice of Annual General Meeting and the 2022 Annual Report so you may refer to them at the Annual General Meeting.

All joint Shareholders may attend and communicate at the Annual General Meeting, however, only the first Shareholder listed on the register of members of the Company is entitled to vote.

All Shareholders or their proxies will have the opportunity to ask questions in advance and at the Annual General Meeting. A question may not be answered at the Annual General Meeting if it is considered not to be in the interests of the Company or the good order of the Annual General Meeting, if it would involve the disclosure of sensitive information, or if the answer has already been given on a website in the form of an answer to a question. The Chair may also nominate a representative to answer a specific question after the Annual General Meeting or refer the Shareholder to the Company's website.

• 1. A registered Shareholder entitled to vote at the Annual General Meeting is entitled to appoint a proxy or proxies (who need not be Shareholders) to exercise all or any of their rights to attend, speak and vote at the Annual General Meeting. A Shareholder may appoint more than one proxy in relation to the Annual General Meeting provided that each proxy is appointed to exercise the rights attached to a different share or shares held by that Shareholder. Your proxy must vote as you instruct and must attend the Annual General Meeting for your vote to be counted. Unless you are appointing the Chair as your proxy, please check with your appointed proxy prior to appointing him/ her that he/ she intends to attend the Annual General Meeting. A Shareholder must inform the Company in writing of any termination of the authority of a proxy.
• 1. A proxy need not be a member of the Company, but must attend the Annual General Meeting either electronically or in person to represent you. Details of how to appoint the Chair of the meeting as your proxy are set out on the proxy card and its notes. Unless you are appointing the Chair as your proxy, please check with your appointed proxy prior to appointing him/her that he/she intends to attend the Annual General Meeting. A Shareholder must inform the Company in writing of any termination of the authority of a proxy.
• 1. Voting on Resolutions 1 to 20 will be conducted by way of a poll.
• 1. To appoint a proxy you may:
• (i) register the appointment of your proxy vote electronically using the internet by going to www.investorcentre.co.uk/eproxy and follow the instructions provided. The proxy appointment must be received by Computershare at the address referred to on the website by 2.30p.m. on 25 April 2023. Please note that any electronic communication sent to the Company's Registrar in respect of the appointment of a proxy that is found to contain a computer virus will not be accepted; or
• (ii) use the proxy card enclosed with this Notice of Annual General Meeting (together with any power of attorney or other authority (if any) under which it is signed (or a duly certified copy thereof)) which should be returned direct to:

Computershare Investor Services PLC, The Pavilions Bridgwater Road, Bristol BS99 6ZY so as to arrive no later than 2.30p.m. on 25 April 2023; or

• (iii) if you hold your shares in uncertificated form, utilise the CREST electronic proxy appointment service as set out overleaf;
• (iv) if you are an institutional investor you may also be able to appoint a proxy electronically via the Proxymity platform, a process which has been agreed by the Company and approved by the Registrar. For further information regarding Proxymity, please go to www.proxymity.io. Your proxy must be lodged by 2.30p.m. on 25 April 2023 in order to be considered valid. Before you can appoint a proxy via this process you will need to have agreed to Proxymity's associated terms and conditions. It is important that you read these carefully as you will be bound by them and they will govern the electronic appointment of your proxy.
• 1. Completion of a proxy card will not preclude a Shareholder from attending and voting at the Annual General Meeting. A 'vote withheld' option is provided on the proxy card accompanying this Notice of Annual General Meeting which is to enable a Shareholder to abstain on any particular resolution. It should be noted that an abstention is not a vote in law and will not be included in the calculation of the proportion of votes 'for' or 'against' a resolution.

NOTES CONTINUED

• 1. In the case of joint Shareholders, where more than one of the joint Shareholders purports to appoint a proxy, only the appointment submitted by the most senior holder will be accepted. Seniority is determined by the order in which the names of the joint holders appear in the Company's register of members in respect of the joint holding (the first named being the most senior).
• 1. To change your proxy instructions, you may return a new proxy card in accordance with note 6. Please contact the Company's Registrar, Computershare Investor Services PLC, at The Pavilions, Bridgwater Road, Bristol, BS99 6ZY if you require another proxy card. The deadline for receipt of proxy appointments (see above) also applies in relation to amended instructions. Any attempt to terminate or amend a proxy appointment received after the relevant deadline will be disregarded. Where two (or more) valid but differing appointments of proxy are received in respect of the same share(s) for use at the same meeting and in respect of the same matter, the one which is last validly received (regardless of its date or of the date of its execution or submission) shall be treated as replacing and revoking the other or others as regards the relevant share(s). If the Company is unable to determine which appointment was last validly received, none of them shall be treated as valid in respect of the relevant share(s).
• 1. The following documents will be available for inspection at the registered office of the Company:
• (i) copies of terms of appointment or service contracts, as appropriate, of the Directors of the Company; and
• (ii) the Directors' deeds of indemnity.
• 1. The statement of rights of Shareholders in relation to the appointment of proxies above does not apply to any nominated persons. The rights described in these paragraphs can only be exercised by Shareholders.
• 1. Information regarding the Annual General Meeting including the information required by section 311A of the Companies Act 2006 is available at www.global.weir/investors/shareholder-information/agm. You can contact the Company electronically by emailing WeirAGM2023@mail.weir. Any email should be accompanied by your full name and Shareholder Reference Number (SRN) as authentication.
• 1. Shareholders of the Company have the right, under section 338 of the Companies Act 2006, to require the Company to give its Shareholders notice of a resolution which the Shareholders wish to be moved at an Annual General Meeting of the Company.

Additionally, Shareholders of the Company have the right under section 338A of the Companies Act 2006 to require the Company to include a matter (other than a proposed resolution) in the business to be dealt with at the Annual General Meeting. The Company is required to give such notice of a resolution or include such matter once it has received requests from Shareholders representing at least 5% of the total voting rights of all the Shareholders who have a right to vote at the Annual General Meeting or from at least 100 Shareholders with the same right to vote who hold shares in the Company on which there has been paid up an average sum, per Shareholder, of at least £100.

This request must be received by the Company not later than six weeks before the Annual General Meeting or, if later, the time at which notice is given of the Annual General Meeting. In the case of a request relating to section 338A of the Companies Act 2006, the request must be accompanied by a statement setting out the grounds for the request.

• 1. Under section 527 of the Companies Act 2006, Shareholders have a right to request publication of any concerns that they propose to raise at the Annual General Meeting relating to the audit of the Company's accounts (including the auditors' report and the conduct of the audit) that are to be submitted to the Annual General Meeting or any circumstances connected to the Company's auditors who ceased to hold office since the last Annual General Meeting. The Company will publish the statement if sufficient requests have been received in accordance with section 527(2) of the Companies Act 2006 which, broadly, requires a minimum of 100 Shareholders holding shares in the Company on which there has been paid up an average sum, per Shareholder, of at least £100 or Shareholders holding at least 5% of the Company's issued share capital to make the request. The Company may not require the Shareholders requesting any such website publication to pay its expenses in complying with such request. Where a statement is published, the Company will forward the statement to the Company's auditors not later than the time when it makes the statement available on the website. The business which may be dealt with at the Annual General Meeting includes any statement that the Company has been required under section 527 of the Companies Act 2006 to publish on its website.
• 1. As at the Latest Practicable Date, the Company's issued share capital comprised 259,613,517 ordinary shares of 12.5p each. Each ordinary share carries the right to one vote at a general meeting of the Company. There are 1,465 ordinary shares held as treasury shares and therefore the total number of voting rights in the Company as at 9.00a.m. on the Latest Practicable Date is 259,612,052. The Company website includes information on the number of ordinary shares in issue and voting rights thereon.
• 1. A corporation which is a Shareholder can appoint one or more corporate representatives who may exercise, on its behalf, all its powers as a Shareholder provided that no more than one corporate representative exercises power over the same share.
• 1. CREST members who wish to appoint a proxy or proxies through the CREST electronic proxy appointment service may do so for the Annual General Meeting and any adjournment(s) thereof by using the procedures described in the CREST Manual on the Euroclear website www.euroclear.com/CREST. CREST personal members or other CREST sponsored members and those CREST members who have appointed a voting service provider(s) should refer to their CREST sponsor or voting service provider(s), who will be able to take the appropriate action on their behalf.

In order for a proxy appointment or instruction made using the CREST service to be valid, the appropriate CREST message (a 'CREST Proxy Instruction') must be properly authenticated in accordance with Euroclear UK & International Limited specifications and must contain the information required for such instructions, as described in the CREST Manual. The message, regardless of whether it relates to the appointment of a proxy or to an amendment to the CREST Proxy Instruction given to a previously appointed proxy must, in order to be valid, be transmitted so as to be received by the issuer's agent (ID 3RA50) not later than 48 hours before the Annual General Meeting. For this purpose, the time of receipt will be taken to be the time (as determined by the timestamp applied to the message by the CREST Applications Host) from which the issuer's agent is able to retrieve the message by enquiry to CREST in the manner prescribed by CREST.

CREST members and, where applicable, their CREST sponsors or voting service providers should note that Euroclear UK & International Limited does not make available special procedures in CREST for any particular messages. Normal system timings and limitations will therefore apply in relation to the input of CREST Proxy Instructions. It is the responsibility of the CREST member concerned to take (or, if the CREST member is a CREST personal member or sponsored member or has appointed a voting service provider(s), to procure that his CREST sponsor or voting service provider(s) take(s)) such action as shall be necessary to ensure that a message is transmitted by means of the CREST system by any particular time. In this connection, CREST members and, where applicable, their CREST sponsors or voting service provider(s) are referred, in particular, to those sections of the CREST Manual concerning practical limitations of the CREST system and timings.

The Company may treat as invalid a CREST Proxy Instruction in the circumstances set out in Regulation 35(5)(a) of the Uncertificated Securities Regulations 2001.

• 1. Please note that the Company takes all reasonable precautions to ensure no viruses are present in any electronic communication it sends out, but the Company cannot accept responsibility for loss or damage arising from the opening or use of any email or attachments from the Company and recommends that Shareholders subject all messages to virus checking procedures prior to use. Any electronic communication received by the Company, including the lodgement of an electronic proxy form, that is found to contain any virus will not be accepted.
• 1. The contents of this notice of Annual General Meeting and, if applicable, any members' statements, members' resolutions or members' matters of business received by the Company after the date of this notice will be available on the Company's website www.global.weir.
• 1. Since 1 March 2023 (the date of the 2022 Annual Report and Accounts), Barbara Jeremiah, Chair, has purchased 2,500 shares in the Company and Dame Nicola Brewer, Non-Executive Director, has purchased 500 shares in the Company.
• 1. The Company will process personal data that Shareholders provide to the Company, including the personal data of a shareholder's proxy if a proxy is provided. Personal data includes all data provided by Shareholders, or on behalf of Shareholders, which relates to: (1) the Shareholder, including name and contact details, the votes that the shareholder casts and any other personal data collected by the controller regarding the shareholder (for example, their Shareholders Reference Number); and (2) any person who is identified as a proxy by a shareholder via form of proxy, including their name and contact details. The Company will also process personal data of Shareholders and/or their proxy to the extent that Shareholders or their proxy attend meetings held by the Company and the Company documents or makes a recording of these meetings, in which case personal data processed by the data may include images and audio of the shareholder or their proxy which may be captured in the form of photographs and/or video and audio recordings.

Please note that if Shareholders either provide the personal data of a proxy, or send a proxy to a meeting in their place, the Company requires the shareholder to communicate this privacy information to such proxy.

The Company and any third party to which it discloses the data (including the Company's registrar) may process such data for the purposes of maintaining the Company's records, meeting management, managing corporate actions, fulfilling the Company's obligations to Shareholders, fulfilling the Company's legal obligations and communicating with Shareholders.

The Company's lawful bases for the processing described above, for the purposes described above, is that the processing is necessary in order for the Company to: (1) fulfil its legitimate interests; and (2) comply with its legal obligations.

All of this data will be processed in accordance with the Company's privacy notice which can be accessed at https://www.global.weir/ privacy-statement

The Weir Group PLC

Appendix 1

BOARD OF DIRECTORS

The Board considers that each Director standing for election or re-election at the Annual General Meeting in 2023 continues to promote the long-term sustainable success of the Company by contributing a specialist skill set that is valuable to the Company, its stakeholders and is complementary to the Board as a whole. You can read more about the Directors' individual skillsets in the Nomination Committee Report on page 95 of the 2022 Annual Report.

BARBARA JEREMIAH Chair

N*

Nationality: American

Independent: Yes Date of appointment:

1 August 2017 Chair from 28 April 2022, Chair-Designate from 2 September 2021 – 28 April 2022, Senior Independent Director from 1 January 2020 - 28 April 2022, Non-Executive Director from 1 August 2017 – 31 December 2019)

Tenure: 5 years, 4 months Ethnicity: White American Age: 70 Gender: Female

Key strengths and experience which support strategy and long-term success

Barbara contributes considerable experience to the Board having spent over 30 years in a number of senior leadership roles within Alcoa Inc., the global aluminium producer and as the Chairwoman of Boart Longyear Limited. She was previously a Non-Executive Director and RemCo Chair of Premier Oil plc and Aggreko plc and a Non-Executive Director of Russel Metals Inc.

Barbara's leadership and governance experience allows her to effectively contribute to the Board.

Barbara has a BA in Political Science and is a qualified lawyer.

Key external appointments

Non-Executive Director and Member of the Audit, Nominations and Remuneration Committees of Senior plc

JON STANTON Chief Executive Officer

Nationality: British Independent: No

Date of appointment: Chief Executive Officer since 1 October 2016, Finance Director from April 2010 – October 2016 Tenure: 12 years, 8 months

Ethnicity: White British Age: 55

Gender: Male

Key strengths and experience which support strategy and long-term success

Jon became CEO in 2016 and contributes a wealth of experience to the Board. Since becoming CEO, he has led the Weir portfolio transformation and oversees the delivery of the 'We are Weir' strategic framework to create long-term sustainable performance improvement.

He provides leadership to deliver the strategy and ensure it aligns with our purpose and values and in particular our zero-harm commitments. Jon is committed to regular engagement with stakeholders and to ensuring stakeholder views and concerns are heard, understood and considered.

Jon joined the Board as Finance Director in 2010. Prior to this he was a partner with Ernst & Young, where he led global boardlevel relationships with a number of FTSE 100 multinational companies.

He is a Chartered Accountant and a member of the Institute of Chartered Accountants in England and Wales.

Key external appointments

Non-Executive Director and Audit Committee Chair of Imperial Brands PLC

JOHN HEASLEY Chief Financial Officer

Nationality: British Independent: No

Date of appointment: Chief Financial Officer since 3 October 2016

Tenure: 6 years, 2 months Ethnicity: White British Age: 48

Gender: Male

Key strengths and experience which support strategy and long-term success

John contributes financial expertise and significant management, commercial and operational experience to execute the Group strategy, while ensuring a robust and effective financial control environment which is compliant with regulations. Previously John worked in financial practice, before holding executive positions in the Renewable Energy Division and corporate office of Scottish Power plc. Since joining Weir in 2008, John has served as Group Financial Controller and Divisional President of the former Flow Control Division, before being appointed to the Board in 2016.

John is also our Group Executive Sponsor for Inclusion, Diversity & Equity, chairing the Group Inclusion, Diversity & Equity Steering Committee and our Global Weir Women's Network. John is a Chartered Accountant and a member of the Institute of Chartered Accountants of Scotland.

Key external appointments

Non-Executive Director and Honorary Treasurer of Royal Scottish National Orchestra Society Limited

DAME NICOLA BREWER Non-Executive Director

R

Nationality: British Independent: Yes

Date of appointment: 21 July 2022

Tenure: 5 months Ethnicity: White British

Age: 65 Gender: Female

Key strengths and experience which support strategy and longterm success

Nicola brings deep experience of international relations and external communications from a long and distinguished diplomatic career. Most recently, she was Vice Provost (international) of University College London, and prior to that, held senior positions in the Foreign and Commonwealth Office (FCO) of the British government. Nicola served as British High Commissioner to South Africa between 2009 and 2013 and was the first Chief Executive of the Equality and Human Rights Commission from 2007 to 2009.

Nicola was a Non-Executive Director and Chair of the Ethics & Corporate Responsibility Committee of Aggreko plc from 2016 to 2021. She was also a Non-Executive Director of London First and of Scottish Power Limited.

Key external appointments

Non-Executive Director and member of the Sustainable Development Committee at Iberdrola SA.

Member of the Trilateral Commission

CLARE CHAPMAN Non-Executive Director

Nationality: British

R* A

Independent: Yes Date of appointment:

1 August 2017

Tenure: 5 years, 4 months Ethnicity: White British

Age: 62

Gender: Female

Key strengths and experience which support strategy and longterm success

Clare brings a wide range of people, governance and large scale business transformation skills to the Board which allow her to contribute effectively in her role as Remuneration Committee Chair. She has vast experience of HR Management gained during her time as Group People Director of BT Group plc and Tesco PLC and as Director General of Workforce for the NHS and Social Care. Clare was also previously a Non-Executive Director and Remuneration Committee Chair of Kingfisher plc, TUI Travel PLC and G4S PLC. Clare was Group HR Director of Tesco PLC from 1999-2006, HR Vice President of Pepsi Cola's European operations from 1994-1999 and has experience of working outside the UK with over ten years based in the USA and mainland Europe. Clare's considerable experience and expertise allows her to contribute and challenge as well as to engage with stakeholders to ensure that there is an appropriate and transparent Remuneration Policy which is aligned with the Weir culture and strategy.

Key external appointments

Non-Executive Director, Chair of the Remuneration Committee and a member of the Risk and Nomination Committee of M&G plc Chair of the Advisory, Conciliation and Arbitration Service (Acas) Council

Steering Group Member and Co-Chair of Purposeful Company

BOARD OF DIRECTORS

COMMITTEE MEMBERSHIP KEY

* Committee Chair A Audit Committee member N Nomination Committee member R Remuneration Committee member

TRACEY KERR Non-Executive Director

A Nationality:

Australian / British Independent: Yes Date of appointment: 21 July 2022 Tenure: 5 months

Ethnicity: White Australian Age: 57

Gender: Female

Key strengths and experience which support strategy and long-term success

Tracey was Group Head of Sustainable Development at Anglo American Plc between 2020 and 2021. Prior to that, she held accountability for safety, operational risk management and sustainable development across the Anglo American group from 2016 to 2020 and served as Group Head of Exploration from 2011 to 2015. In her earlier career she held a variety of roles at Vale S.A. and BHP Pty Ltd. She was previously a Non-Executive Director at Polymetal International Plc.

Key external appointments

Non-Executive Director of Hochschild Mining PLC Non-Executive Director of Jubilee Metals Group PLC

BEN MAGARA Non-Executive Director

R N

Nationality: Zimbabwean Independent: Yes

Date of appointment: 19 January 2021 Tenure: 1 year 11 month Ethnicity: Black African

Age: 55 Gender: Male

Key strengths and experience which support strategy and long-term success

Ben is a seasoned mining industry leader. He contributes extensive experience of leading global mining businesses, which is of critical importance to the Board as the Group transforms into a focused, premium mining technology business. Since 2019, Ben has run his own mining advisory firm.

Prior to joining the Weir Board, Ben served from 2013-2019 as CEO of Lonmin Plc, the then third largest global platinum mining company. He was a senior mining executive at Anglo American plc, having served as Executive Vice President of Engineering & Projects for Anglo Platinum from 2009-2013 and CEO of Anglo Coal SA from 2006-2009. Ben started his career as a graduate with Anglo American plc after completing his mining engineering degree at the University of Zimbabwe.

Key external appointments

Non-Executive Director and member of the Risk and Business Resilience Committee of Exxaro Resources Limited

Non-Executive Director and Chair of REMCO of Grindrod Limited

SIR JIM McDONALD Senior Independent Director

N

Nationality: British Independent: Yes

Date of appointment: Non-Executive Director since 1 January 2015, Senior Independent Director since 28 April 2022

Tenure: 7 years 11 months Ethnicity: White British Age: 65

Gender: Male

Key strengths and experience which support strategy and long-term success

Sir Jim is a highly regarded expert in engineering and technology and therefore contributes specialist technical knowledge to the Board. He is currently the Principal and Vice Chancellor of the University of Strathclyde and has held the Rolls-Royce Chair in Electrical Power Systems since 1993. He holds a number of Non-Executive Director roles and co-chairs the Scottish Energy Advisory Board with the First Minister. Sir Jim draws on his extensive experience to assist the Board to approve the development of the Group's technology agenda and to provide oversight and guidance on the sustainable engineering solutions that promote the success of the Company and build on its legacy of engineering excellence.

He is Chairman of the Scottish Engineering and Energy Research Pools and is FREng, FRSE, FIET, FInstP, FEI.

Key external appointments

Non-Executive Director of Scottish Power Limited Senior Adviser to the UK Offshore Renewable Energy Catapult Board Non-Executive Director of UK National Physical Laboratory President of the Royal Academy of Engineering Member to the Prime Minister's Council for

Science and Technology

SRINIVASAN VENKATAKRISHNAN Non-Executive Director

Nationality: British/Indian

Independent: Yes Date of appointment:

19 January 2021 Tenure: 1 year 11 month

Ethnicity: Asian Indian Age: 57

A

Gender: Male

Key strengths and experience which support strategy and long-term success

Venkat brings a wealth of mining experience to the Board gained through his vast experience of leading global mining businesses. He served as CEO of Vedanta Resources plc from 2018-2020 and was CEO of AngloGold Ashanti Limited between 2013-2018, having previously been Chief Financial Officer of the business from 2005, and of Ashanti Goldfields Limited from 2000. His earlier career was as a Chartered Accountant and restructuring specialist with Deloitte & Touche in the UK and India.

Key external appointments

Non-Executive Chair of Endeavour Mining plc Non-Executive Director BlackRock World Mining Trust plc

STEPHEN YOUNG Non-Executive Director

Nationality: British

A* R

Independent: Yes Date of appointment:

1 January 2018 Tenure: 4 years 11 months

Ethnicity: White British

Age: 67 Gender: Male

Key strengths and experience which support strategy and long-term success

Stephen is a skilled and experienced financial professional. He was previously Chief Executive of Meggitt PLC from 2013-2017, having previously served as Group Finance Director from 2004. Prior to joining Meggitt PLC, Stephen was Group Finance Director of Thistle Hotels plc and the Automobile Association.

Stephen's financial background and his leadership experience allow him to contribute effectively both as a Board member and as Chair of the Audit Committee. His oversight of the Group's Audit function helps the Board to ensure the ongoing integrity of the financial information, internal controls and risk management frameworks.

He is a Fellow of the Royal Aeronautical Society, a Fellow of the Chartered Institute of Management Accountants and a council member of The University of Southampton.

Key external appointments

Senior Independent Director, Audit Committee Chair and member of the Nomination Committee and Sustainable Development Committee of Mondi plc.

11

The Weir Group PLC

Registered in Scotland No. SC002934 Registered Office: 1 West Regent Street Glasgow G2 1RW Scotland

Telephone: +44 (0)141 637 7111 Email: WeirAGM2023@mail.weir Website: www.global.weir