../../../../../Desktop/System1_Group_logosetRGB_Pink.png

28^th May 2024

System1 Group PLC (AIM: SYS1)

("System1", or "the Company", or "the Group")

TR1: Notification of major holdings

On 28^th May 2024, the Company received the TR1 Standard form for notification of major holdings as disclosed below:

TR-1: Standard form for notification of major holdings


1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached ⁱⁱ:			System1 Group plc GB00B1GVQH21
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			Chapters Group AG (formerly MEDIQON Group AG)
City and country of registered office (if applicable)			Hamburg, Germany
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:			28/05/2024
6. Date on which issuer notified (DD/MM/YYYY):			28/05/22024
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	0.00%	0.00%		0.00%	0
Position of previous notification (if applicable)	5.52%	-		5.52%

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)



SUBTOTAL 8. A

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
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






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

Place of completion	Hamburg, Germany
Date of completion	28/05/2024

The Company can be found at www.system1group.com.

For further information, please contact:

System1 Group PLC	Tel: +44 (0)20 7043 1000
James Gregory, Chief Executive Officer
Chris Willford, Chief Financial Officer
Canaccord Genuity Limited	Tel: +44 (0)20 7523 8000
Simon Bridges / Andrew Potts / Harry Rees