ADTRAN Holdings, Inc.

Historical 13F Holders

Symbol: ADTN
CUSIP: 00486H105
All holders as of: Q2 2026
Type: Equity
Class: COM

Reported Value, Excluding Options

Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 00486H105 since 12/18/2024, newest first.

Filer	% of Class	Shares	Form	Filed
Vanguard Portfolio Management LLC 13G	6.0%	4,868,836	13G	4/28/2026 Event 3/31/2026
Vanguard Group Inc 13G/A Amendment 18	0%	0	13G/A Amendment 18	3/26/2026 Event 3/13/2026
EGORA Ventures AG 13G/A Amendment 1	4.97%	4,005,806	13G/A Amendment 1	3/18/2026 Event 2/2/2026
Divisar Capital Management LLC 13G/A Amendment 5	4.0%	3,213,090	13G/A Amendment 5	11/14/2025 Event 9/30/2025
Divisar Capital Management LLC	4.0%	3,213,090
Steven Baughman	4.0%	3,213,090
Divisar Capital Management LLC 13G/A Amendment 4	5.3%	4,229,362	13G/A Amendment 4	8/14/2025 Event 6/30/2025
Divisar Capital Management LLC	5.3%	4,229,362
Steven Baughman	5.3%	4,229,362
Vanguard Group Inc 13G/A Amendment 17	10.2%	8,166,157	13G/A Amendment 17	7/7/2025 Event 6/30/2025
Divisar Capital Management LLC 13G/A Amendment 3	4.3%	3,428,863	13G/A Amendment 3	5/15/2025 Event 3/31/2025
Divisar Partners QP, L.P.	4.0%	3,192,527
Divisar Capital Management LLC	4.3%	3,428,863
Steven Baughman	4.3%	3,428,863
William Blair Investment Management, LLC 13G/A Amendment 2	4.2%	3,354,334	13G/A Amendment 2	5/9/2025 Event 3/31/2025
DnB Asset Management AS 13G/A Amendment 1	4.4%	3,551,606	13G/A Amendment 1	4/23/2025 Event 3/31/2025
Egora Ventures AG 13G	6.7%	5,357,343	13G	3/6/2025 Event 2/14/2025
Divisar Capital Management LLC 13G/A Amendment 2	6.1%	4,806,383	13G/A Amendment 2	2/14/2025 Event 12/31/2024
Divisar Capital Management LLC	6.1%	4,806,383
Divisar Partners QP, L.P.	5.7%	4,491,488
Steven Baughman	6.1%	4,806,383
Divisar Capital Management LLC 13G/A Amendment 1	7.7%	6,083,241	13G/A Amendment 1	11/14/2024 Event 9/30/2024
Divisar Capital Management LLC	7.7%	6,083,241
Divisar Partners QP, L.P.	7.2%	5,683,299
Steven Baughman	7.7%	6,083,241

13F Holders by Quarter

Period	Filings	Shares, Excl. Options	Value, Excl. Options	Options Value
2026 Q3	3	4.33 k	$29.6 k	$0
2026 Q2	259	87.4 M	$1.28 B	$12.4 M
2026 Q1	236	79.1 M	$994 M	$2.37 M
2025 Q4	220	70.4 M	$612 M	$2.12 M
2025 Q3	231	68.3 M	$666 M	$5.09 M
2025 Q2	205	59.5 M	$534 M	$1.34 M
2025 Q1	218	58.8 M	$513 M	$3.15 M
2024 Q4	167	61.7 M	$514 M	$2.45 M
2024 Q3	163	59.2 M	$350 M	$3.96 M
2024 Q2	167	62.3 M	$327 M	$1.98 M
2024 Q1	181	66.6 M	$363 M	$1.47 M
2023 Q4	182	64.9 M	$476 M	$1.59 M
2023 Q3	176	63.6 M	$522 M	$1.31 M
2023 Q2	180	64.8 M	$679 M	$3.14 M
2023 Q1	180	63.5 M	$1.01 B	$509 k
2022 Q4	193	66.4 M	$1.25 B	$3.37 M
2022 Q3	194	61.8 M	$1.21 B	$2.05 M
2022 Q2	14	1.38 M	$24.3 M	$478 k
2022 Q1	1	521	$9.61 k	$0
2021 Q4	1	508	$11.6 k	$0
2021 Q3	1	497	$9.32 k	$0
2021 Q2	1	497	$10.3 k	$0
2021 Q1	1	497	$8.29 k	$0
2020 Q4	1	497	$7.34 k	$0
2020 Q3	1	497	$5.10 k	$0
2020 Q2	1	497	$5.43 k	$0
2019 Q3	1	1.12 k	$12.8 k	$0
2019 Q2	1	1.12 k	$17.1 k	$0
2019 Q1	1	1.12 k	$15.4 k	$0
2018 Q3	1	841	$14.8 k	$0
2018 Q2	1	448	$6.65 k	$0
2018 Q1	1	1.13 k	$17.5 k	$0
2017 Q4	1	1.13 k	$21.8 k	$0
2017 Q3	1	1.13 k	$27.1 k	$0
2017 Q2	1	1.13 k	$23.3 k	$0
2017 Q1	1	1.13 k	$23.4 k	$0
2016 Q4	2	1.15 k	$25.7 k	$0
2016 Q3	2	1.15 k	$22.0 k	$0
2016 Q2	2	1.15 k	$21.5 k	$0
2016 Q1	2	1.15 k	$23.3 k	$0
2015 Q4	1	24.0	$413.00	$0
2015 Q3	1	24.0	$350.00	$0
2015 Q2	1	24.0	$390.00	$0
2015 Q1	1	24.0	$448.00	$0