ADTRAN Holdings, Inc. (ADTN) Insider Ownership

Historic Ownership Trends

According to recent filings covering the 90 days ending January 02, 2026, the three most significant insider holders at ADTRAN Holdings are Chairman & Ceo Thomas R Stanton (982.10K shares), Chief Revenue Officer James Denson Jr Wilson (132.34K shares), Director Nikos Theodosopoulos (52.15K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Thomas R Stanton Chairman & Ceo 982,096 25 Nov, 2025
Brian Protiva 372,906 03 Jan, 2024
James Denson Jr Wilson Chief Revenue Officer 132,341 19 Nov, 2025
Balan Nair 111,564 03 Jan, 2025
Michael Foliano Chief Financial Officer 107,235 04 Jan, 2023
H Fenwick Huss 93,791 03 Jan, 2025
Kathryn A Walker 84,854 03 Jan, 2025
Roy J Nichols 63,870 07 Sep, 2021
Gregory James Mccray 59,084 03 Jan, 2025
Hourigan Rice Jacqueline 53,751 03 Jan, 2025
Nikos Theodosopoulos 52,154 01 Dec, 2025
Ulrich Dopfer Chief Financial Officer 48,195 28 Jan, 2025
Christoph Glingener Chief Technology Officer 46,645 28 Jan, 2025
Eduard Scheiterer Svp And Research & Development 40,027 02 Dec, 2021
Timothy P Santo Svp Of Finance; Cfo 26,594 01 Dec, 2025
Johanna Hey 8,294 21 Sep, 2023

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
28 Nov, 2025 Timothy P Santo Common Stock A 6,150 $8.02 26,594 D P
26 Nov, 2025 Nikos Theodosopoulos Common Stock A 12,859 $7.81 52,154 D P
24 Nov, 2025 Thomas R Stanton Common Stock A 40,928 $7.33 982,096 D P
17 Nov, 2025 Thomas R Stanton Common Stock D 3,355 $7.33 941,168 D F
17 Nov, 2025 James Denson Jr Wilson Common Stock D 468 $7.33 128,223 D F
13 Jul, 2025 Thomas R Stanton Common Stock D 5,663 $9.20 944,523 D F
13 Apr, 2025 Thomas R Stanton Common Stock D 5,408 $7.62 950,186 D F
19 Mar, 2025 Timothy P Santo - - 20,444 D
19 Mar, 2025 Timothy P Santo Common Stock A 20,444 $0.00 20,444 D A
24 Jan, 2025 Christoph Glingener - - 32,775 D
24 Jan, 2025 Christoph Glingener Common Stock A 13,907 $0.00 32,775 D A
24 Jan, 2025 Thomas R Stanton Common Stock A 39,375 $0.00 815,593 D A
24 Jan, 2025 Ulrich Dopfer Common Stock A 16,291 $0.00 37,591 D A
24 Jan, 2025 James Denson Jr Wilson Common Stock A 16,096 $0.00 119,581 D A
24 Jan, 2025 Ulrich Dopfer Common Stock D 4,613 $10.31 32,978 D F
24 Jan, 2025 James Denson Jr Wilson Common Stock D 4,208 $10.31 115,373 D F
24 Jan, 2025 Christoph Glingener Common Stock A 13,870 $0.00 46,645 D A
24 Jan, 2025 Thomas R Stanton Common Stock D 10,307 $10.31 805,286 D F
24 Jan, 2025 Christoph Glingener - - 46,645 D
24 Jan, 2025 Thomas R Stanton Common Stock A 159,844 $0.00 965,130 D A