Adtran Holdings, Inc.: Christoph Glingener, Sale of 126,115 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) Due to their large number, the individual transactions to be reported under number 4 lit. c) of this notification are split across three publi

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

a) Name

Title:
First name:	Christoph
Last name(s):	Glingener

2. Reason for the notification

a) Position / status

Position:

Chief Technology Officer

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
ISIN:	US00486H1059

b) Nature of the transaction

Sale of 126,115 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) Due to their large number, the individual transactions to be reported under number 4 lit. c) of this notification are split across three publications. This is the second of those three publications. The aggregated information under section 4 lit. d) of this notification refers to all individual transactions from all three publications.

c) Price(s) and volume(s)

Price(s)	Volume(s)
14.81 USD	1,481.00 USD
14.79 USD	266.22 USD
14.79 USD	1,212.78 USD
14.79 USD	1,479.00 USD
14.80 USD	44.40 USD
14.80 USD	710.40 USD
14.80 USD	148.00 USD
14.80 USD	148.00 USD
14.79 USD	428.91 USD
14.80 USD	2,960.00 USD
14.80 USD	74.00 USD
14.76 USD	88.56 USD
14.76 USD	14.76 USD
14.76 USD	1,328.40 USD
14.76 USD	29.52 USD
14.76 USD	14.76 USD
14.75 USD	2,950.00 USD
14.77 USD	118.16 USD
14.77 USD	1,358.84 USD
14.73 USD	14.73 USD
14.73 USD	73.65 USD
14.73 USD	14.73 USD
14.73 USD	1,369.89 USD
14.74 USD	1,474.00 USD
14.64 USD	29.28 USD
14.64 USD	263.52 USD
14.63 USD	1,170.40 USD
14.66 USD	2,932.00 USD
14.67 USD	1,467.00 USD
14.69 USD	1,469.00 USD
14.66 USD	1,466.00 USD
14.63 USD	1,463.00 USD
14.63 USD	1,463.00 USD
14.63 USD	1,463.00 USD
14.63 USD	1,463.00 USD
14.64 USD	1,464.00 USD
14.64 USD	1,464.00 USD
14.64 USD	1,464.00 USD
14.65 USD	1,465.00 USD
14.61 USD	1,461.00 USD
14.60 USD	350.40 USD
14.60 USD	1,109.60 USD
14.60 USD	1,460.00 USD
14.60 USD	1,460.00 USD
14.59 USD	1,459.00 USD
14.58 USD	1,458.00 USD
14.55 USD	1,455.00 USD
14.55 USD	1,455.00 USD
14.54 USD	1,454.00 USD
14.55 USD	1,455.00 USD
14.57 USD	1,457.00 USD
14.57 USD	1,457.00 USD
14.57 USD	1,457.00 USD
14.60 USD	1,460.00 USD
14.68 USD	1,468.00 USD
14.68 USD	102.76 USD
14.68 USD	88.08 USD
14.68 USD	587.20 USD
14.68 USD	689.96 USD
14.67 USD	1,467.00 USD
14.64 USD	14.64 USD
14.64 USD	907.68 USD
14.64 USD	29.28 USD
14.64 USD	512.40 USD
14.62 USD	263.16 USD
14.62 USD	1,198.84 USD
14.61 USD	1,461.00 USD
14.61 USD	102.27 USD
14.61 USD	1,358.73 USD
14.61 USD	1,461.00 USD
14.60 USD	1,459.50 USD
14.60 USD	2,920.00 USD
14.52 USD	1,452.00 USD
14.48 USD	101.36 USD
14.48 USD	970.16 USD
14.48 USD	275.12 USD
14.48 USD	101.36 USD
14.49 USD	1,449.00 USD
14.50 USD	1,160.00 USD
14.47 USD	1,447.00 USD
14.43 USD	1,443.00 USD
14.43 USD	1,443.00 USD
14.43 USD	1,067.82 USD
14.38 USD	1,438.00 USD
14.39 USD	661.94 USD
14.42 USD	1,442.00 USD
14.43 USD	288.60 USD
14.43 USD	28.86 USD
14.43 USD	1,125.54 USD
14.44 USD	144.40 USD
14.44 USD	1,299.60 USD
14.44 USD	101.08 USD
14.44 USD	14.44 USD
14.44 USD	1,328.48 USD
14.43 USD	14.43 USD
14.43 USD	144.30 USD
14.43 USD	1,269.84 USD
14.43 USD	14.43 USD
14.43 USD	259.74 USD
14.43 USD	1,183.26 USD
14.44 USD	1,444.00 USD
14.45 USD	1,445.00 USD
14.43 USD	1,443.00 USD
14.43 USD	1,443.00 USD
14.39 USD	1,439.00 USD
14.41 USD	1,441.00 USD
14.41 USD	1,441.00 USD
14.41 USD	43.23 USD
14.39 USD	1,036.08 USD
14.39 USD	14.39 USD
14.39 USD	388.53 USD
14.38 USD	1,438.00 USD
14.39 USD	1,439.00 USD
14.39 USD	1,395.83 USD
14.39 USD	1,395.83 USD
14.39 USD	1,395.83 USD
14.40 USD	1,440.00 USD
14.43 USD	1,443.00 USD
14.45 USD	1,444.50 USD
14.45 USD	866.70 USD
14.44 USD	577.60 USD
14.45 USD	1,445.00 USD
14.53 USD	1,453.00 USD
14.50 USD	1,189.00 USD
14.50 USD	261.00 USD
14.46 USD	144.60 USD
14.46 USD	72.30 USD
14.46 USD	1,229.10 USD
14.46 USD	173.46 USD
14.46 USD	1,257.59 USD
14.46 USD	14.46 USD
14.45 USD	173.40 USD
14.45 USD	72.25 USD
14.45 USD	289.00 USD
14.45 USD	895.90 USD
14.45 USD	14.45 USD
14.45 USD	1,445.00 USD
14.45 USD	158.95 USD
14.45 USD	1,286.05 USD
14.46 USD	1,446.00 USD
14.46 USD	1,446.00 USD
14.46 USD	1,446.00 USD
14.47 USD	86.82 USD
14.47 USD	1,447.00 USD
14.47 USD	1,447.00 USD
14.47 USD	1,360.18 USD
14.53 USD	1,453.00 USD
14.54 USD	1,454.00 USD
14.52 USD	1,452.00 USD
14.50 USD	1,450.00 USD
14.50 USD	449.35 USD
14.50 USD	1,000.16 USD
14.48 USD	1,448.00 USD
14.45 USD	1,156.00 USD
14.45 USD	289.00 USD
14.42 USD	1,182.44 USD
14.42 USD	259.56 USD
14.40 USD	1,440.00 USD
14.40 USD	230.40 USD
14.40 USD	907.20 USD
14.40 USD	302.40 USD
14.39 USD	446.09 USD
14.39 USD	172.68 USD
14.39 USD	172.68 USD
14.39 USD	647.55 USD
14.40 USD	1,440.00 USD
14.38 USD	1,438.00 USD
14.39 USD	1,439.00 USD
14.38 USD	1,438.00 USD
14.36 USD	1,436.00 USD
14.36 USD	1,435.50 USD
14.37 USD	1,437.00 USD
14.37 USD	1,437.00 USD
14.37 USD	1,437.00 USD
14.38 USD	1,438.00 USD
14.38 USD	1,438.00 USD
14.38 USD	201.32 USD
14.38 USD	1,236.68 USD
14.39 USD	402.92 USD
14.39 USD	1,036.08 USD
14.41 USD	14.41 USD
14.41 USD	1,426.59 USD
14.40 USD	1,440.00 USD
14.41 USD	1,441.00 USD
14.43 USD	1,443.00 USD
14.43 USD	1,443.00 USD
14.43 USD	2,886.00 USD
14.47 USD	1,447.00 USD
14.47 USD	1,447.00 USD
14.50 USD	1,450.00 USD
14.50 USD	1,450.00 USD
14.49 USD	1,449.00 USD
14.47 USD	1,331.24 USD
14.47 USD	115.76 USD
14.47 USD	1,447.00 USD
14.47 USD	1,447.00 USD
14.47 USD	1,056.31 USD
14.47 USD	144.70 USD
14.47 USD	245.99 USD
14.50 USD	1,450.00 USD
14.43 USD	1,443.00 USD
14.43 USD	144.30 USD
14.43 USD	1,240.98 USD
14.43 USD	57.72 USD
14.43 USD	1,183.26 USD
14.43 USD	1,443.00 USD
14.43 USD	259.74 USD
14.43 USD	1,443.00 USD
14.44 USD	1,227.40 USD
14.44 USD	216.60 USD
14.44 USD	924.16 USD
14.44 USD	519.84 USD
14.44 USD	1,444.00 USD
14.45 USD	1,445.00 USD
14.45 USD	1,445.00 USD
14.44 USD	1,444.00 USD
14.43 USD	1,443.00 USD
14.42 USD	403.76 USD
14.43 USD	461.76 USD
14.43 USD	115.44 USD
14.43 USD	404.04 USD
14.42 USD	115.36 USD
14.43 USD	923.52 USD
14.43 USD	519.48 USD
14.42 USD	1,384.32 USD
14.43 USD	865.80 USD
14.43 USD	865.80 USD
14.43 USD	1,168.83 USD
14.43 USD	649.35 USD
14.43 USD	779.22 USD
14.43 USD	1,443.00 USD
14.43 USD	1,053.39 USD
14.41 USD	1,830.07 USD
14.38 USD	2,876.00 USD
14.38 USD	2,876.00 USD
14.39 USD	2,878.00 USD
14.39 USD	4,317.00 USD
14.41 USD	4,323.00 USD
14.45 USD	5,780.00 USD
14.51 USD	2,902.00 USD
14.51 USD	8,706.00 USD
14.51 USD	1,451.00 USD
14.51 USD	1,451.00 USD
14.52 USD	2,904.00 USD
14.53 USD	4,359.00 USD
14.56 USD	1,456.00 USD
14.55 USD	378.30 USD
15.69 USD	2,934.03 USD
15.69 USD	3,138.00 USD
15.69 USD	203.97 USD
15.55 USD	186.54 USD
15.55 USD	854.98 USD
15.55 USD	512.99 USD
15.53 USD	186.36 USD
15.55 USD	854.98 USD
15.53 USD	512.49 USD
15.53 USD	186.36 USD
15.55 USD	699.53 USD
15.55 USD	155.45 USD
15.53 USD	512.49 USD
15.53 USD	1,553.00 USD
15.52 USD	1,552.00 USD
15.44 USD	15.44 USD
15.45 USD	309.00 USD
15.44 USD	1,219.76 USD
15.46 USD	15.46 USD
15.46 USD	1,530.54 USD
15.47 USD	1,546.50 USD
15.44 USD	1,544.00 USD
15.44 USD	1,544.00 USD
15.45 USD	1,545.00 USD
15.45 USD	1,545.00 USD
15.44 USD	1,544.00 USD
15.47 USD	4,795.70 USD
15.47 USD	1,392.30 USD
15.37 USD	245.92 USD
15.36 USD	768.00 USD
15.36 USD	522.24 USD
15.37 USD	92.22 USD
15.37 USD	1,444.78 USD
15.37 USD	92.22 USD
15.37 USD	1,444.78 USD
15.37 USD	92.22 USD
15.37 USD	1,444.78 USD
15.37 USD	92.22 USD
15.37 USD	768.50 USD
15.37 USD	676.28 USD
15.37 USD	92.22 USD
15.37 USD	1,444.78 USD
15.37 USD	92.22 USD
15.36 USD	1,443.84 USD
15.37 USD	153.65 USD
15.37 USD	307.40 USD
15.37 USD	1,075.55 USD
15.36 USD	1,536.00 USD
15.33 USD	15.33 USD
15.34 USD	767.00 USD
15.34 USD	444.86 USD
15.33 USD	306.60 USD
15.29 USD	1,529.00 USD
15.26 USD	1,526.00 USD
15.26 USD	1,526.00 USD
15.26 USD	1,526.00 USD
15.22 USD	1,522.00 USD
15.21 USD	1,521.00 USD
15.19 USD	15.19 USD
15.19 USD	1,503.81 USD
15.17 USD	1,517.00 USD
15.16 USD	1,516.00 USD
15.11 USD	15.11 USD
15.11 USD	1,495.89 USD
15.08 USD	15.08 USD
15.08 USD	1,492.92 USD
15.11 USD	1,511.00 USD
15.11 USD	1,511.00 USD
15.10 USD	15.10 USD
15.12 USD	3,008.88 USD
15.14 USD	484.48 USD
15.14 USD	1,029.52 USD
15.14 USD	121.12 USD
15.14 USD	1,392.88 USD
15.15 USD	1,515.00 USD
15.12 USD	1,512.00 USD
15.13 USD	4,539.00 USD
15.13 USD	164,932.13 USD
15.10 USD	6,040.00 USD
15.10 USD	6,040.00 USD
15.00 USD	1,515.00 USD
15.00 USD	1,080.00 USD
15.00 USD	1,500.00 USD
15.00 USD	2,295.00 USD
15.00 USD	2,205.00 USD
15.00 USD	255.00 USD
15.00 USD	1,500.00 USD
15.00 USD	2,355.00 USD
15.00 USD	1,500.00 USD
15.00 USD	810.00 USD
15.00 USD	1,500.00 USD
15.00 USD	1,500.00 USD
15.00 USD	735.00 USD
15.00 USD	765.00 USD
15.00 USD	3,735.00 USD
15.00 USD	690.00 USD
15.00 USD	1,500.00 USD
15.00 USD	735.00 USD
15.00 USD	1,500.00 USD
15.00 USD	3,000.00 USD
15.00 USD	3,000.00 USD
15.00 USD	3,000.00 USD
15.00 USD	3,000.00 USD
15.00 USD	3,000.00 USD
15.00 USD	150.00 USD
15.00 USD	1,500.00 USD
15.00 USD	1,500.00 USD
15.00 USD	1,140.00 USD
15.00 USD	1,500.00 USD
15.00 USD	855.00 USD
15.00 USD	15.00 USD
15.00 USD	2,985.00 USD
15.00 USD	15.00 USD
15.00 USD	1,500.00 USD
15.00 USD	1,500.00 USD
15.00 USD	2,265.00 USD
15.00 USD	1,095.00 USD
15.00 USD	1,500.00 USD

d) Aggregated information

Price	Aggregated volume
14.95 USD	1,885,662.54 USD

e) Date of the transaction

07/05/2026; UTC?4

f) Place of the transaction

Name:	NASDAQ
MIC:	XNAS