⌘K

Holding(s) in Company

RNS Number : 4908U

Aptamer Group PLC

07 August 2025

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) ⁱ

1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached ⁱⁱ:			Aptamer Group Plc
1b. Please indicate if the issuer is a non-UK issuer (please mark with an "X" if appropriate)
UK						X
2. Reason for the notification (please mark the appropriate box or boxes with an "X")
An acquisition or disposal of voting rights
An acquisition or disposal of financial instruments
An event changing the breakdown of voting rights						X
Other (please specify) ⁱⁱⁱ:
3. Details of person subject to the notification obligation ^iv
Name			Northern Standard Limited
City and country of registered office (if applicable)			2^nd Floor, Connaught House, St. Julian's Avenue, St. Peter Port, Guernsey, GY1 1RD
4. Full name of shareholder(s) (if different from 3.) ^v
Name			Fiske Nominees Limited
City and country of registered office (if applicable)			100 Wood Street, London, England, EC2V 7AN
5. Date on which the threshold was crossed or reached ^vi:			28/07/2025
6. Date on which issuer notified (DD/MM/YYYY):			06/08/2025
7. Total positions of person(s) subject to the notification obligation
	% of voting rights attached to shares (total of 8. A)	% of voting rights through financial instruments (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	8.1424%	-		8.1424%	216,666,667
Position of previous notification (if applicable)	9.0589%	-		9.0589%

8. Notified details of the resulting situation on the date on which the threshold was crossed or reached ^viii
A: Voting rights attached to shares
Class/type of shares ISIN code (if possible)		Number of voting rights ^ix					% of voting rights
		Direct (DTR5.1)		Indirect (DTR5.2.1)			Direct (DTR5.1)		Indirect (DTR5.2.1)
GB00BNRRP542		216,666,667		-			8.1424%		-


SUBTOTAL 8. A		216,666,667					8.1424%

B 1: Financial Instruments according to DTR5.3.1R (1) (a)
Type of financial instrument		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 Period ^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
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				X
Name ^xv	% of voting rights if it equals or is higher than the notifiable threshold	% of voting rights through financial instruments if it equals or is higher than the notifiable threshold	Total of both if it equals or is higher than the notifiable threshold
Dr John Wardle	-	-	-
Tracarta Limited	-	-	-
Northern Standard Limited	8.1424%	-	8.1424%



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
Mr. Edward James Norman Wardle holds a 49% ownership interest in Northern Standard Limited but does not exercise majority control. The chain of control is through Dr John Wardle, who owns 100% of Tracarta Limited, which holds 51% of Northern Standard Limited.

Place of completion	St. Peter Port, Guernsey
Date of completion	07/08/2025

This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com.

RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our Privacy Policy.

END

HOLUPUPPRUPAGQM

Holding(s) in Company - Aptamer Group PLC | RNS | Ticker