Adtran Inc

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Adtran Inc
TickerADTN
CIK #0000926282
CUSIP00738A106
SectorManufacturing - Telephone & Telegraph Apparatus
Address901 Explorer Blvd, Huntsville, AL 35806
Source [EDGAR]
CIK Filing 2011 - 2026
[0000926282] 10-K
[0000926282] 10-Q
[0000926282] 3
[0000926282] 4
[0000926282] 5
[0000926282] 8-K
[0000926282] SC 13D
[0000926282] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Vanguard Portfolio Management LLC Adtran Holdings Inc [2026-04-28] 0.0
Egora Ventures AG Adtran Holdings Inc [2025-03-06] 0.0
DNB Asset Management as Adtran Holdings Inc [2024-11-12] 6.1
Vanguard Group Inc Adtran Holdings Inc [2024-11-04] 8.26
Divisar Capital Management LLC Adtran Holdings Inc [2024-03-25] 5.1
William Blair Investment Management LLC Adtran Holdings Inc [2024-02-12] 5.1
BlackRock Inc Adtran Holdings Inc [2023-01-20] 17.7
BlackRock Inc Adtran Holdings Inc [2022-09-08] 0.0
BlackRock Inc Adtran Holdings Inc [2022-09-08] 16.2
Protiva Brian Adtran Holdings Inc [2022-07-20] 1.6
Bank of New York Mellon Corp Adtran Inc [2022-02-02] 6.56
BlackRock Inc Adtran Inc [2021-01-25] 16.1
Renaissance Technologies LLC Adtran Inc [2020-02-12] 5.13
Victory Capital Management Inc Adtran Inc [2017-02-10] 7.19
Dimensional Fund Advisors LP Adtran Inc [2017-02-09] 5.57
Citadel Advisors LLC Adtran Inc [2013-08-29] 5.1
Vanguard Group Inc Adtran Inc [2013-02-13] 5.37
Artisan Partners Holdings LP Adtran Inc [2013-02-06] 7.4
Price T Rowe Associates Inc /MD/ Adtran Inc [2012-10-10] 13.1
FMR LLC Adtran Inc [2012-09-10] 0.0
Kornitzer Capital Management Inc /KS Adtran Inc [2012-01-20] 5.32
Form 3/4/5 Filer 2011 - 2026
DelSanto Anne
Adtran Inc
Wilson James Denson Jr
Glingener Christoph
Santo Timothy P
Stanton Thomas R
Jacqueline Hourigan Rice
Theodosopoulos Nikos
Nair Balan
HUSS H Fenwick
Walker Kathryn A
McCray Gregory James
Dopfer Ulrich
Protiva Brian
Hey Johanna
Foliano Michael
Centis Ronald
Conger Robert
Harris Ray
Kimpe Marc
Scheiterer Eduard
Nichols Roy J
McInnis Jeffrey F
Melone Anthony J
Whalen Daniel T
Shannon Roger D
Marks William L
Neville John
Marsh Charles E
Heering Kevin P
Schansman Raymond R
Schneider Kevin W
Matthews James E
Fredrickson Robert A
North James L
Ireland Ross K
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Santo Timothy P
Common Stock
2026-03-19 Tax withheld 1,501 $11.90 17,862
Jacqueline Hourigan Rice
Common Stock
2026-03-04 Sell 14,406 $10.29 148,238
Wilson James Denson Jr
Common Stock
2026-01-26 Tax withheld 1,087 $9.24 10,044
Wilson James Denson Jr
Common Stock
2026-01-26 Grant 3,777 $0.00
Stanton Thomas R
Common Stock
2026-01-26 Grant 27,973 $0.00
Wilson James Denson Jr
Common Stock
2026-01-26 Tax withheld 998 $9.73 9,711
Common Stock
2026-01-26 Tax withheld 1,309 $9.24 12,095
Stanton Thomas R
Common Stock
2026-01-26 Tax withheld 12,407 $9.24 114,641
Stanton Thomas R
Common Stock
2026-01-26 Tax withheld 14,409 $9.73 140,200
Stanton Thomas R
Common Stock
2026-01-24 Tax withheld 17,535 $9.55 167,459
Wilson James Denson Jr
Common Stock
2026-01-24 Tax withheld 1,227 $9.55 11,718
Wilson James Denson Jr
Common Stock
2026-01-20 Tax withheld 765 $9.24 7,069
Stanton Thomas R
Common Stock
2026-01-20 Tax withheld 10,247 $9.24 94,682
Walker Kathryn A
Common Stock
2025-12-31 Grant 13,809 $0.00
Jacqueline Hourigan Rice
Common Stock
2025-12-31 Grant 13,809 $0.00
Nair Balan
Common Stock
2025-12-31 Grant 13,809 $0.00
HUSS H Fenwick
Common Stock
2025-12-31 Grant 13,809 $0.00
McCray Gregory James
Common Stock
2025-12-31 Grant 13,809 $0.00
Theodosopoulos Nikos
Common Stock
2025-12-31 Grant 13,809 $0.00
Santo Timothy P
Common Stock
2025-11-28 Buy 6,150 $8.02 49,323
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 228 76,596,999
2025-12-31 214 68,878,603
2025-09-30 224 67,973,634
2025-06-30 196 59,241,260
2025-03-31 207 58,939,555
2024-12-31 161 61,856,803
2024-09-30 154 59,699,107
2024-06-30 158 60,047,306
2024-03-31 171 66,609,794
2023-12-31 173 64,650,534
2023-09-30 166 63,608,130
2023-06-30 169 64,369,058
Form 13F Holdings
Firm Period DFND Voting Shares
Assenagon Asset Management SA [2026-06-30] SOLE 917,754 917,754
Counterpoint Mutual Funds LLC [2026-06-30] SOLE 529,866 529,866
Hennessy Advisors Inc [2026-06-30] SOLE 526,300 526,300
Y-Intercept Hong Kong Ltd [2026-06-30] SOLE 370,294 370,294
Burney CO/ [2026-06-30] SOLE 0 93,597
Koesten Hirschmann & Crabtree Inc [2026-06-30] SOLE 0 84,854
Curated Wealth Partners LLC [2026-06-30] OTR 0 30,760
Wealth Enhancement Advisory Services LLC [2026-06-30] SOLE 587 19,025
Alaska Retirement Management Board [2026-06-30] SOLE 3,872 3,872
Gamma Investing LLC [2026-06-30] DFND 3,457 3,457
Versant Capital Management Inc [2026-06-30] SOLE 2,631 2,631
Farther Finance Advisors LLC [2026-06-30] SOLE 0 322
IFP Advisors LLC [2026-06-30] SOLE 300 300
True Wealth Design LLC [2026-06-30] SOLE 0 194
Torren Management LLC [2026-06-30] SOLE 0 46
Physician Wealth Advisors Inc [2026-06-30] SOLE 0 29
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