Aster Acquisition Corp. — Major Shareholding Notification 2026

Feb 12, 2026

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Serabi Gold plc ("Serabi" or the "Company") Holding(s) in Company

The Board of Serabi announces that the Company has received the following TR-1 notification which is set out below.

Enquiries:

Serabi Gold plc
Michael Hodgson	Tel: +44 (0) 20 7246 6830
Chief Executive	Mobile: +44 (0) 7799 473621
Andrew Khov
Vice President, Investor Relations & Business	Mobile +1 647 885 4874
Development
Email: contact@serabigold.com
Website: www.serabigold.com
Beaumont Cornish Limited
Nominated Adviser and Financial Adviser
Roland Cornish / Michael Cornish	Tel: +44 (0) 20 7628 3396
Peel Hunt LLP
Joint UK Broker
Ross Allister	Tel: +44 (0) 20 7418 9000
Tamesis Partners LLP
Joint UK Broker
Charlie Bendon / Richard Greenfield	Tel: +44 (0) 20 3882 2868
Camarco Financial PR - Europe
Gordon Poole / Fergus Young	Tel: +44(0) 20 3757 4980

Copies of this announcement are available from the Company's website at www.serabigold.com.

TR-1: Standard form for notification of major holdings

NOTIFICATION OF MAJOR HOLDINGS (to be sent to the relevant issuer and to the FCA in Microsoft Word format if possible)

1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are at tached ii:	Serabi Gold plc BG5NDX9
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	1b. Please indicate if the issuer is a non-UK issuer (please mark with an "X" if appropriate)
Non-UK issuer
2.	Reason for the notification (please mark		the appropriate box or boxes	with an "X")
An acquisition or disposal of voting rights					X
	An acquisition or disposal of financial instruments
	An event changing the breakdown of voting rights
Other (please specify)	iii:
3. Details of person subject to the		notification obligation	iv
Name				Classe Roca Magma Multiestrategia dade Limitada do SSF IV Coinvestmento I Fundo de Investimento em Participações	Responsabili
	City and country of registered office (if applicable)			Rio de Janeiro, Brazil
4. Full name of shareholder(s)	(if different from 3.)	v
Name
City and country of registered office (if applicable)
5. Date on which the threshold was crossed or reached vi:		05/02/2026
6. Date on which issuer notified (DD/MM/YYYY):		06/02/2026
7. Total positions	of person(s) subject to the notification obligation
	% of voting rights at tached to shares (to tal of 8. A)		% of voting rights through financial instru ments (total of 8.B 1 + 8.B 2)	Total of both in % (8.A + 8.B)	Total number of voting rights held in issuer (8.A + 8.B) vii
Resulting situation on the date on which threshold was crossed or reached	24.98999%	0.00		24.98999%	18,926,056
Position of previous notification (if applicable)	19.99%	0.00		19.99%	15,146,902
8. Notified details reached viii	of the resulting situation on A: Voting rights attached to shares			the date on which the threshold was crossed or

ix % of voting rights

Number of voting rights

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Class/type of shares ISIN code (if possible)	Direct (DTR5.1)	Indirect (DTR5.2.1)	Direct (DTR5.1)	Indirect (DTR5.2.1)
Ordinary shares (GB00BG5NDX91)	18,926,056		24.98999
SUBTOTAL 8. A	18,926,056		24.98999

B 1: Financial Instruments according to DTR5.3.1R (1) (a)
Type of financial in strument	Expiration date x	Exercise/ Conversion Period xi	Number of voting rights that may be acquired if the instrument is exercised/converted.	% of voting rights
		SUBTOTAL 8. B 1

	B 2: Financial Instruments with similar economic effect according to DTR5.3.1R (1) (b)
Type of financial instrument	Expiration date x	Exercise/ Conversion Pe riod xi	Physical or cash Settlement xii	Number of voting rights	% of voting rights
			SUBTOTAL 8.B.2

9. Information in relation to the person subject to the notification obligation (please mark the applicable box with an "X")
Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer xiii	X
Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entity (please add additional rows as necessary) xiv

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Name xv	% of voting rights if it equals or is higher than the notifiable threshold	% of voting rights through financial in struments if it equals or is higher than the notifiable threshold	Total of both if it equals or is higher than the notifiable threshold

10. In case of proxy voting, please identify:
Name of the proxy holder
The number and % of voting rights held
The date until which the voting rights will be held

11. Additional information xvi

The person named in section 3 above (the "Fund") is an investment fund registered in Brazil and managed by Starboard Asset Ltda. (the "Fund Manager"). The Fund Manager has the ability to determine the manner in which the voting rights attached to the shares referred to in section 8A above will be exercised by the Fund, and as such is an indirect holder of shares for the purposes of the definition of shareholder pursuant to DTR 5.2.1R(h), DTR 5.2.2G(4) and DTR 5.2.3G. On that basis, this notification is submitted on behalf of the Fund and the Fund Manager pursuant to DTR 5.2.5R(2) and DTR 5.8.4R(4).

Place of completion	Sao Paulo, Brazil
Date of completion	06/02/2026