4BASEBIO PLC

Major Shareholding Notification • Jul 2, 2025

National Storage Mechanism | Additional information

4basebio Plc - Holding(s) in Company

PR Newswire

LONDON, United Kingdom, July 02

TR-1: Standard form for notification of major holdings

1. Issuer Details

ISIN

GB00BMCLYF79

Issuer Name

4BASEBIO PLC

UK or Non-UK Issuer

UK

2. Reason for Notification

An event changing the breakdown of voting rights

3. Details of person subject to the notification obligation

Name

Wilhelm K. T. Zours

City of registered office (if applicable)

Heidelberg

Country of registered office (if applicable)

Germany

4. Details of the shareholder

Full name of shareholder(s) if different from the person(s) subject to the notification obligation, above

City of registered office (if applicable)

Country of registered office (if applicable)

5. Date on which the threshold was crossed or reached

30-Jun-2025

6. Date on which Issuer notified

30-Jun-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
Resulting situation on the date on which threshold was crossed or reached	32.985508	0.000000	32.985508	5115852
Position of previous notification (if applicable)	33.013179	0.000000	33.013179

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)
GB00BMCLYF79	0	5115852	0.000000	32.985508
Sub Total 8.A	5115852		32.985508%

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

2. 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 entities (please add additional rows as necessary)

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
Wilhelm K.T. Zours
Wilhelm K.T. Zours	DELPHI Unternehmensberatung Aktiengesellschaft	4.116447		4.116447%
Wilhelm K.T. Zours	VV Beteiligungen Aktiengesellschaft
Wilhelm K.T. Zours	Deutsche Balaton Aktiengesellschaft
Wilhelm K.T. Zours	SPARTA AG
Wilhelm K.T. Zours	SPARTA Invest AG	8.715480		8.715480%
Wilhelm K.T. Zours	2invest AG	14.372471		14.372471%
Wilhelm K.T. Zours	Latonba AG	5.086279		5.086279%

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

11. Additional Information

12. Date of Completion

30-Jun-2025

13. Place Of Completion

Heidelberg, Germany

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