RM plc: Holding(s) in Company

TR-1: Standard form for notification of major holdings 1. Issuer Details ISIN GB00BJT0FF39 Issuer Name RM PLC UK or Non-UK Issuer UK 2. Reason for Notification An acquisition or disposal of voting rights 3. Details of person subject to the notification obligation Name Aberforth Partners LLP City of registered office (if applicable) London Country of registered office (if applicable) United Kingdom 4. Details of the shareholder

Name	City of registered office	Country of registered office
Nortrust Nominees Ltd	London	United kingdom

5. Date on which the threshold was crossed or reached 01-Oct-2026 6. Date on which Issuer notified 02-Oct-2026 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
Resulting situation on the date on which threshold was crossed or reached	24.915000	0.000000	24.915000	24438311
Position of previous notification (if applicable)	16.360000	0.000000	16.360000

8. Notified details of the resulting situation on the date on which the threshold was crossed or reached 8A. Voting rights attached to shares

Class/Type of shares ISIN code(if possible)	Number of direct voting rights (DTR5.1)	Number of indirect voting rights (DTR5.2.1)	% of direct voting rights (DTR5.1)	% of indirect voting rights (DTR5.2.1)
GB00BJT0FF39	0	24438311	0.000000	24.915000
Sub   Total 8.A	24438311		24.915000%

8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))

Type of financial instrument	Expiration date	Exercise/conversion period	Number of voting rights that may be acquired if the instrument is exercised/converted	% of voting rights
Sub   Total 8.B1

8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b))

Type of financial instrument	Expiration date	Exercise/conversion period	Physical or cash settlement	Number of voting rights	% of voting rights
Sub   Total 8.B2

9. Information in relation to the person subject to the notification obligation 1. 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.

Ultimate controlling person	Name of controlled undertaking	% 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

10. In case of proxy voting Name of the proxy holder   The number and % of voting rights held   The date until which the voting rights will be held   If date does not apply, explain below   11. Additional Information   12. Date of Completion 02-Oct-2026 13. Place Of Completion Edinburgh, United Kingdom