Holding(s) in Company

TR-1: Standard form for notification of major holdings

1. Issuer Details

ISIN

GB00BMCLYF79

Issuer Name

4BASEBIO PLC

UK or Non-UK Issuer

2. Reason for Notification

An acquisition or disposal of voting rights; An event changing the breakdown of voting rights

3. Details of person subject to the notification obligation

Name

Deutsche Balaton Aktiengesellschaft

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-Jan-2024

6. Date on which Issuer notified

02-Feb-2024

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	47.404828	0.000000	47.404828	5840025
Position of previous notification (if applicable)	17.022612	0.000000	17.022612

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	823065	5016960	6.681008	40.723820
Sub Total 8.A	5840025		47.404828%

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	5.182332		5.182332%
Wilhelm K.T. Zours	Deutsche Balaton Aktiengesellschaft	6.681008		6.681008%
Wilhelm K.T. Zours	SPARTA AG	10.972206		10.972206%
Wilhelm K.T. Zours	2invest AG	29.751614		29.751614%