Adtran Holdings, Inc.: Christian H. Terlinde, Acquisition of 8,721 shares of restricted stock as part of Equity Incentive Compensation. The restrictions lapse upon vesting of the RSAs and ...

1. Details of the person discharging managerial responsibilities / person closely associated

a) Name

Title:
First name:	Christian H.
Last name(s):	Terlinde

2. Reason for the notification

a) Position / status

Position:

Member of the Board of Directors

b) Initial notification

3. Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a) Name

Adtran Holdings, Inc.

b) LEI

549300VV36J86CRRWF77

4. Details of the transaction(s)

a) Description of the financial instrument, type of instrument, identification code

Type:	Share
Description:	Restricted Stock Awards (RSAs) regarding shares in ADTRAN Holdings, Inc. (ISIN US00486H1059)

b) Nature of the transaction

Acquisition of 8,721 shares of restricted stock as part of Equity Incentive Compensation. The restrictions lapse upon vesting of the RSAs and unrestricted shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) are held.

c) Price(s) and volume(s)

Price(s)	Volume(s)
not numberable	not numberable

d) Aggregated information

Price	Aggregated volume
not numberable	not numberable

e) Date of the transaction

27/10/2026; UTC?5

f) Place of the transaction

Outside a trading venue