GABELLI MERGER PLUS+ TRUST PLC

Proxy Solicitation & Information Statement • Oct 26, 2023

(AA111AAZZ) MR SAM SAMPLE DESIGNATION (IF ANY) MR JOINT HOLDER 1 ADD1 ADD2 ADD3 ADD4

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Attendance Card

Please bring this card with you to the Meeting and present it at Shareholder registration/accreditation.

Additional Holders: ADDITIONAL HOLDER 1 ADDITIONAL HOLDER 2 ADDITIONAL HOLDER 3 ADDITIONAL HOLDER 4

The Co-Chairmen of Gabelli Merger Plus + Trust Plc invites you to attend the Annual General Meeting of the Company to be held at the offi ces of GAMCO (UK), 3 St. James's Place, London, SW1A 1NP on 30 November 2023 at 4.00 pm.

Shareholder Reference Number C1234567890

Please detach this portion before posting this proxy form.

Form of Proxy - Annual General Meeting to be held on 30 November 2023

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To be effective, all proxy appointments must be lodged with the Company's Registrars at: Computershare Investor Services PLC, The Pavilions, Bridgwater Road, Bristol BS99 6ZY by 28 November 2023 at 4.00 pm.

Explanatory Notes:

• 1. Every holder has the right to appoint some other person(s) of their choice, who need not be a shareholder, as his proxy to exercise all or any of his rights, to attend, speak and vote on their behalf at the meeting. If you wish to appoint a person other than the Chairman, please insert the name of your chosen proxy holder in the space provided (see reverse). If the proxy is being appointed in relation to less than your full voting entitlement, please enter in the box next to the proxy holder's name (see reverse) the number of shares in relation to which they are authorised to act as your proxy. If returned without an indication as to how the proxy shall vote on any particular matter, the proxy will exercise his discretion as to whether, and if so how, he votes (or if this proxy form has been issued in respect of a designated account for a shareholder, the proxy will exercise his discretion as to whether, and if so how, he votes).
• 2. To appoint more than one proxy, an additional proxy form(s) may be obtained by contacting the Registrar's helpline on 03707071390 or you may photocopy this form. Please indicate in the box next to the proxy holder's name (see reverse) the number of shares in relation to which they are authorised to act as your proxy. Please also indicate by marking the box provided if the proxy instruction is one of multiple instructions being given. All forms must be signed and should be returned together in the same envelope.
• 3. The 'Vote Withheld' option overleaf is provided to enable you to abstain on any particular resolution. However, it should be noted that a 'Vote Withheld' is not a vote in law and will not be counted in the calculation of the proportion of the votes 'For' and 'Against' a resolution.
• 4. Pursuant to Regulation 41 of the Uncertifi cated Securities Regulations 2001, entitlement to attend and vote at the meeting and the number of votes which may be cast thereat will be determined by reference to the Register of Members of the Company at close of business on the day which is two days before the day of the meeting. Changes to entries on the Register of Members after that time shall be disregarded in determining the rights of any person to attend and vote at the meeting.
• 5. To appoint one or more proxies or to give an instruction to a proxy (whether previously appointed or otherwise) via the CREST system, CREST messages must be received by the issuer's agent (ID number 3RA50) not later than 48 hours before the time appointed for holding the meeting. For this purpose, the time of receipt will be taken to be the time (as determined by the timestamp generated by the CREST system) from which the issuer's agent is able to retrieve the message. The Company may treat as invalid a proxy appointment sent by CREST in the circumstances set out in Regulation 35(5)(a) of the Uncertifi cated Securities Regulations 2001.
• 6. The above is how your address appears on the Register of Members. If this information is incorrect please ring the Registrar's helpline on 03707071390 to request a change of address form or go to www.investorcentre.co.uk to use the online Investor Centre service.
• 7. Any alterations made to this form should be initialled.
• 8. The completion and return of this form will not preclude a member from attending the meeting and voting in person.

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Kindly Note: This form is issued only to the addressee(s) and is specific to the All Named Holders unique designated account printed hereon. This personalised form is not transferable between different: (i) account holders; or (ii) uniquely designated accounts. The Company and Computershare Investor Services PLC accept no liability for any instruction that does not comply with these conditions.

MR A SAMPLE ADDITIONAL HOLDER 1 ADDITIONAL HOLDER 2 ADDITIONAL HOLDER 3 ADDITIONAL HOLDER 4

Form of Proxy

Please complete this box only if you wish to appoint a third party proxy other than the Chairman. Please leave this box blank if you want to select the Chairman. Do not insert your own name(s).

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C1234567890

I/We hereby appoint the Chairman of the Meeting OR the person indicated in the box above as my/our proxy to attend, speak and vote in respect of my/our full voting entitlement* on my/our behalf at the Annual General Meeting of Gabelli Merger Plus + Trust Plc to be held at the offi ces of GAMCO (UK), 3 St. James's Place, London, SW1A 1NP on 30 November 2023 at 4.00 pm, and at any adjourned meeting.

* For the appointment of more than one proxy, please refer to Explanatory Note 2 (see front).

Please mark here to indicate that this proxy appointment is one of multiple appointments being made.

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Please use a black pen. Mark with an X
inside the box as shown in this example.	X

	Ordinary Resolutions	For	Vote Against Withheld			For	Vote Against Withheld
1.	To receive the Company's audited fi nancial statements, the Strategic Report and the reports of the Directors of the Company for the period ended 30 June 2023.			12.	To authorise the Audit and Risk Committee to determine the remuneration of the auditors. Special Business
2.	To approve the Directors' Remuneration Report for the period ended 30 June 2023.			13.	To authorise the Directors to allot shares in the Company under section 551 Companies Act 2006.
3.	To approve the Directors' Remuneration Policy, as set out in the Director's Remuneration Report, which takes effect			14.	That the Board of Directors be authorised to issue and allot Special Voting Loyalty Shares.
	immediately after the end of the annual general meeting.				Special Resolutions
4.	To approve the Company's dividend policy to continue to pay four quarterly interim dividends.			15.	To authorise the Directors to allot Ordinary shares and/or to sell Ordinary shares held by the Company as treasury shares.
5.	To re-elect Marc Gabelli as a Director.			16.	To authorise the company to allot equity securites.
6.	To re-elect Marco Bianconi as a Director.			17.	To approve the Company's Investment Policy to enable the management team to implement the Company's Investment
7.	To re-elect John Birch as a Director.			18.	Policy as a closed company. To adopt Articles of Association as amended.
8.	To re-elect John Newlands as a Director.
				19.	To authorise the Company to make market purchases of its own Ordinary shares.
9.	To re-elect Yuji Sugimoto as a Director.			20.	To permit general meetings to be called on
10.	To re-elect James Wedderburn as a Director.				14 days' notice.
					Intention to Attend
11.	To re-appoint PricewaterhouseCoopers LLP as auditors of the Company to hold offi ce until the conclusion of the next annual general meeting of the Company.				Please indicate if you intend to attend the AGM

I/We instruct my/our proxy as indicated on this form. Unless otherwise instructed the proxy may vote as he or she sees fit or abstain in relation to any business of the meeting.

Signature Date

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In the case of a corporation, this proxy must be given under its common seal or be signed on its behalf by an attorney or offi cer duly authorised, stating their capacity (e.g. director, secretary).

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