| SC 13G | 2024-03-25 | Divisar Capital Management LLC | ADTRAN Holdings, Inc. | 4,066,153 | 5.1% | EDGAR |
| SC 13G/A | 2024-02-12 | VANGUARD GROUP INC | ADTRAN Holdings, Inc. | 7,722,425 | 9.8% | EDGAR |
| SC 13G/A | 2024-02-12 | VANGUARD GROUP INC | ADTRAN Holdings, Inc. | 7,876,776 | 10.0% | EDGAR |
| SC 13G | 2024-02-12 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | ADTRAN Holdings, Inc. | 4,001,171 | 5.1% | EDGAR |
| SC 13G/A | 2024-01-22 | BlackRock Inc. | ADTRAN Holdings, Inc. | 13,502,046 | 17.2% | EDGAR |
| SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | ADTRAN Holdings, Inc. | 8,099,787 | 10.4% | EDGAR |
| SC 13G/A | 2023-01-26 | BlackRock Inc. | ADTRAN Holdings, Inc. | 13,723,837 | 17.7% | EDGAR |
| SC 13G | 2023-01-20 | BlackRock Inc. | ADTRAN Holdings, Inc. | 13,723,837 | 17.7% | EDGAR |
| SC 13G | 2022-09-08 | BlackRock Inc. | ADTRAN Holdings, Inc. | - | - | EDGAR |
| SC 13G | 2022-09-08 | BlackRock Inc. | ADTRAN Holdings, Inc. | 12,503,474 | 16.2% | EDGAR |
| SC 13D | 2022-07-20 | Protiva Brian | ADTRAN Holdings, Inc. | 1,257,908 | 1.6% | EDGAR |
| SC 13G/A | 2022-02-09 | VANGUARD GROUP INC | ADTRAN INC | 5,424,685 | 11.0% | EDGAR |
| SC 13G/A | 2022-02-08 | DIMENSIONAL FUND ADVISORS LP | ADTRAN INC | 2,271,552 | 4.6% | EDGAR |
| SC 13G/A | 2022-02-07 | BlackRock Inc. | ADTRAN INC | 8,140,068 | 16.7% | EDGAR |
| SC 13G | 2022-02-02 | Bank of New York Mellon Corp | ADTRAN INC | 3,222,495 | 6.6% | EDGAR |
| SC 13G/A | 2022-02-01 | VICTORY CAPITAL MANAGEMENT INC | ADTRAN INC | 1,929,047 | 3.9% | EDGAR |
| SC 13G/A | 2021-02-12 | DIMENSIONAL FUND ADVISORS LP | ADTRAN INC | 2,779,006 | 5.8% | EDGAR |
| SC 13G/A | 2021-02-10 | VANGUARD GROUP INC | ADTRAN INC | 5,231,303 | 10.9% | EDGAR |
| SC 13G/A | 2021-02-10 | RENAISSANCE TECHNOLOGIES LLC | ADTRAN INC | 1,993,673 | 4.2% | EDGAR |
| SC 13G/A | 2021-02-02 | VICTORY CAPITAL MANAGEMENT INC | ADTRAN INC | 4,119,412 | 8.6% | EDGAR |