Thomas R. Stanton, Chairman and CEO of ADTRAN Holdings ($ADTN), made one open market purchase of company shares in the last year, totaling about $300 thousand. His most recent buy occurred on November 24, 2025. These purchases rank 1,146th among nearly 5,000 individual insiders, compared to an average of $1.5 million per insider over 3.3 transactions. Stanton reported no open market sales in the period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 1, 2026 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | A | Common Stock | 170723 | $0.00 | 1,126,553.5100 | 80,115,995 | 17.86% | 0.21% |
| Jan. 24, 2025 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | A | Common Stock | 39735 | $0.00 | 815,952.5100 | 0 | 5.12% | 0.00% |
| Jan. 26, 2026 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 12407 | $9.24 | 955,470.5100 | 80,115,995 | 1.28% | 0.02% |
| Jan. 26, 2026 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | A | Common Stock | 27973 | $0.00 | 967,877.5100 | 80,115,995 | 2.98% | 0.03% |
| Jan. 24, 2026 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 17535 | $9.55 | 954,313.5100 | 80,115,995 | 1.80% | 0.02% |
| Jan. 26, 2026 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 14409 | $9.73 | 939,904.5100 | 80,115,995 | 1.51% | 0.02% |
| Jan. 20, 2026 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 10247 | $9.24 | 971,848.5100 | 80,115,995 | 1.04% | 0.01% |
| Nov. 24, 2025 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | P | Common Stock | 40928 | $7.33 | 982,095.5100 | 80,115,995 | 4.35% | 0.05% |
| Nov. 17, 2025 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 3355 | $7.33 | 941,167.5100 | 80,115,995 | 0.36% | 0.00% |
| July 13, 2025 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 5663 | $9.20 | 944,522.5100 | 79,860,033 | 0.60% | 0.01% |
| April 13, 2025 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 5408 | $7.62 | 950,185.5100 | 79,860,033 | 0.57% | 0.01% |
| Jan. 26, 2025 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 9536 | $10.31 | 955,593.5100 | 0 | 0.99% | 0.00% |
| Jan. 24, 2025 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | A | Common Stock | 159844 | $0.00 | 965,129.5100 | 0 | 19.85% | 0.00% |
| Jan. 24, 2025 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 10307 | $10.31 | 805,285.5100 | 0 | 1.26% | 0.00% |
| Jan. 24, 2025 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | A | Common Stock | 39375 | $0.00 | 815,592.5100 | 0 | 5.07% | 0.00% |
| Jan. 20, 2025 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 6395 | $10.19 | 776,217.5100 | 0 | 0.82% | 0.00% |
| Jan. 13, 2025 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 6018 | $10.01 | 782,612.5100 | 0 | 0.76% | 0.00% |
| Nov. 17, 2024 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 16773 | $7.75 | 788,630.5100 | 0 | 2.08% | 0.00% |
| Nov. 16, 2024 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 5572 | $7.75 | 805,403.5100 | 0 | 0.69% | 0.00% |
| Oct. 13, 2024 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 3748 | $5.91 | 810,975.5100 | 0 | 0.46% | 0.00% |
| July 13, 2024 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 41906 | $5.78 | 814,723.5100 | 0 | 4.89% | 0.00% |
| July 13, 2024 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 72549 | $5.78 | 784,080.5100 | 0 | 8.47% | 0.00% |
| Jan. 26, 2024 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | A | Common Stock | 129958 | $0.00 | 856,629.5100 | 0 | 17.88% | 0.00% |
| Jan. 20, 2024 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 10817 | $7.03 | 726,671.5100 | 0 | 1.47% | 0.00% |
| Nov. 16, 2023 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 27856 | $5.37 | 740,843.5100 | 0 | 3.62% | 0.00% |
| Nov. 17, 2023 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 3355 | $5.55 | 737,488.5100 | 0 | 0.45% | 0.00% |
| Nov. 15, 2023 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 7398 | $5.51 | 768,699.5100 | 0 | 0.95% | 0.00% |
| Sept. 5, 2023 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | A | Phantom Stock | 2340 | $0.00 | 225,774.5870 | 0 | 1.05% | 0.00% |
| June 6, 2023 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | A | Phantom Stock | 2262 | $0.00 | 223,434.2260 | 0 | 1.02% | 0.00% |
| March 21, 2023 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | A | Phantom Stock | 1241 | $15.95 | 221,171.8810 | 0 | 0.56% | 0.00% |
| Jan. 20, 2023 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | A | Common Stock | 87146 | $0.00 | 776,097.5100 | 0 | 12.65% | 0.00% |
| Dec. 31, 2022 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | A | Phantom Stock | 60320 | $0.00 | 219,930.7840 | 0 | 37.79% | 0.00% |
| Dec. 31, 2022 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | F | Common Stock | 56493 | $18.79 | 749,271.5100 | 0 | 7.01% | 0.00% |
| Dec. 31, 2022 | ADTRAN Holdings, Inc. | $ADTN | STANTON THOMAS R | Chairman & CEO | D | Common Stock | 60320 | $0.00 | 688,951.5100 | 0 | 8.05% | 0.00% |