Adtran Networks SE / DE0005103006

Notification of Major Holdings

1. Details of issuer

Name:	Adtran Networks SE
Street:	Märzenquelle 1-3
Postal code:	98617
City:	Meiningen-Dreissigacker Germany
Legal Entity Identifier (LEI):	5299001QZNN0TKI9J120

2. Reason for notification

X	Acquisition/disposal of shares with voting rights
	Acquisition/disposal of instruments
	Change of breakdown of voting rights
	Other reason:

3. Details of person subject to the notification obligation

Legal entity: JPMorgan Chase & Co. City of registered office, country: Wilmington, Delaware, United States of America (USA)

4. Names of shareholder(s)
holding directly 3% or more voting rights, if different from 3.

5. Date on which threshold was crossed or reached:

30 Jul 2025

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	12.02 %	0.39 %	12.41 %	52054500
Previous notification	7.11 %	0.98 %	8.09 %	/

7. Details on total positions
a. Voting rights attached to shares (Sec. 33, 34 WpHG)

ISIN	Absolute		In %
	Direct (Sec. 33 WpHG)	Indirect (Sec. 34 WpHG)	Direct (Sec. 33 WpHG)	Indirect (Sec. 34 WpHG)
DE0005103006	0	6255496	0.00 %	12.02 %
Total	6255496		12.02 %

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

Type of instrument	Expiration or maturity date	Exercise or conversion period	Voting rights absolute	Voting rights in %
Internal right to recall shares lent out			196532	0.38 %
		Total	196532	0.38 %

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

Type of instrument	Expiration or maturity date	Exercise or conversion period	Cash or physical settlement	Voting rights absolute	Voting rights in %
Equity Swap	30/09/2025-30/05/2028	30/09/2025-30/05/2028	Cash	6391	0.01 %
			Total	6391	0.01 %

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

	Person subject to the notification obligation is not controlled nor does it control any other undertaking(s) that directly or indirectly hold(s) an interest in the (underlying) issuer (1.).
X	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)
JPMorgan Chase & Co.	%	%	%
JPMorgan Chase Bank, National Association	%	%	%
J.P. Morgan International Finance Limited	%	%	%
J.P. Morgan Capital Holdings Limited	%	%	%
J.P. Morgan Securities plc	12.02 %	%	12.41 %
-	%	%	%

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:
Holding total positions after general meeting (6.) after annual general meeting:

Proportion of voting rights	Proportion of instruments	Total of both
%	%	%

10. Other explanatory remarks:

Date

04 Aug 2025