4. Names of shareholder(s) holding directly 3% or more voting rights, if different from 3
DELPHI Unternehmensberatung Aktiengesellschaft, Deutsche Balaton Aktiengesellschaft, SPARTA AG

5. Date on which threshold was crossed or reached
15.10.2020

6. Total positions

	% of voting rights attached to shares (total of 7.a.)	% of voting rights through instruments (total of 7.b.1 + 7.b.2)	Total of both in % (7.a. + 7.b.)	Total number of voting rights pursuant to Sec. 41 WpHG
New	43.60	3.07	43.60	51,733,386
Previous notification (if applicable)	43.50	9.20	43.50

7. Details on total positions

a. Voting rights attached to shares (Sec.s 33, 34 WpHG)

ISIN	Absolute direct (Sec. 33 WpHG)	Absolute indirect (Sec. 34 WpHG)	In % direct (Sec. 33 WpHG)	In % indirect (Sec. 34 WpHG)
DE000A2YN801	0	22,555,022	0.00	43.60
Total:		22,555,022		43.60

b.1. Instruments according to Sec. 38 (1) no. 1 WpHG

Type of instrument	Maturity / Expiration	Exercise or conversion period	Voting Rights Absolute	Voting Rights in %
Vertraglicher Lieferanspruch	Ende Oktober 2020		1,190,545	2.30
Vertraglicher Lieferanspruch	Ende Oktober 2020		396,848	0.77
		Total:	1,587,393	3.07

b.2 Instruments according to Sec. 38 (1) no. 2 WpHG

Type of instrument	Maturity / Expiration	Exercise or conversion period	Cash or physical transaction	Voting Rights Absolute	Voting Rights in %
				0	0.00
			Total:	0	0.00

8. Information in relation to the person subject to the notification obligation

Full chain of controlled undertakings starting with the ultimate controlling natural person or legal entity

Name	% of voting rights (if at least 3% or more)	% of voting rights through instruments (if at least 5% or more)	Total of both (if at least 5% or more)
- Wilhelm K. T. Zours
- DELPHI Unternehmensberatung Aktiengesellschaft	43.40		43.40
- VV Beteiligungen Aktiengesellschaft
- Deutsche Balaton Aktiengesellschaft	43.40		43.40
- AEE Ahaus-Enscheder AG
-
- Wilhelm K. T. Zours
- DELPHI Unternehmensberatung Aktiengesellschaft	43.40		43.40
- VV Beteiligungen Aktiengesellschaft
- Deutsche Balaton Aktiengesellschaft	43.40		43.40
- SPARTA AG	43.40		43.40
-
- Wilhelm K. T. Zours
- DELPHI Unternehmensberatung Aktiengesellschaft	43.40		43.40
- VV Beteiligungen Aktiengesellschaft
- Deutsche Balaton Aktiengesellschaft	43.40		43.40
- Investunity AG
-
- Wilhelm K. T. Zours
- DELPHI Unternehmensberatung Aktiengesellschaft	43.40		43.40
- VV Beteiligungen Aktiengesellschaft
- Deutsche Balaton Aktiengesellschaft	43.40		43.40
- Latonba AG	43.40		43.40

9. In case of proxy voting according to Sec. 34 para. 3 WpHG
(only in case of attribution of voting rights in accordance with Sec. 34 para. 1 sent. 1 No. 6 WpHG)

Date of general meeting: N/A

10. Other useful information
The instruments listed in field 7.b.1 are not added to the sum of the shares in fields 6 and 8 because they are claims to voting rights which are already held within the Group and are mutually allocated to SPARTA, Deutsche Balaton, DELPHI Unternehmensberatung and Latonba on the basis of a pooling agreement and are therefore included in the share of voting rights.

Date
19.10.2020

(end)

Emitter:	4basebio AG Waldhofer Str. 102 69123 Heidelberg Germany
Contact Person:	Robert Mayer
Phone:	+49 171 3876540
E-mail:	robert.mayer@4basebio.com
Website:	investors.4basebio.com
Stock Exchanges:	regulated market in Frankfurt; free market in Dusseldorf, free market in Hamburg, free market in Munich, free market in Stuttgart; open market in Berlin, Tradegate
ISIN(s):	DE000A2YN801 (share)