ADTN - CIK 0000926282
ADTRAN Holdings, Inc. has filed 2,087 documents with the SEC between 1996 and 2026. The most frequent type is insider trade (1,171 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| Major company event | 8-K | 2022-10-25 | 2022-10-24 |
| Major company event | 8-K | 2022-10-18 | 2022-10-18 |
| Major company event (amended) | 8-K/A | 2022-09-30 | 2022-07-15 |
| Insider trade (amended) | 4/A | 2022-09-08 | 2022-09-01 |
| Passive ownership stake | SC 13G | 2022-09-08 | - |
| Passive ownership stake | SC 13G | 2022-09-08 | - |
| Insider trade | 4 | 2022-09-06 | 2022-09-01 |
| Insider trade | 4 | 2022-09-06 | 2022-09-01 |
| Insider trade | 4 | 2022-09-06 | 2022-09-01 |
| Insider trade | 4 | 2022-09-06 | 2022-09-01 |
| Insider trade | 4 | 2022-09-06 | 2022-09-01 |
| Insider trade | 4 | 2022-09-06 | 2022-09-01 |
| Insider trade | 4 | 2022-09-06 | 2022-09-01 |
| Insider trade | 4 | 2022-09-06 | 2022-09-01 |
| Insider trade | 4 | 2022-09-06 | 2022-09-01 |
| Insider trade | 4 | 2022-09-06 | 2022-09-01 |
| New insider ownership | 3 | 2022-09-02 | 2022-09-01 |
| Insider trade (amended) | 4/A | 2022-09-02 | 2022-08-23 |
| Insider trade (amended) | 4/A | 2022-09-02 | 2022-08-11 |
| Insider trade | 4 | 2022-08-25 | 2022-08-23 |
| Insider trade | 4 | 2022-08-15 | 2022-08-11 |
| Insider trade | 4 | 2022-08-15 | 2022-08-11 |
| Insider trade | 4 | 2022-08-11 | 2022-08-09 |
| Insider trade | 4 | 2022-08-11 | 2022-08-09 |
| Insider trade | 4 | 2022-08-11 | 2022-08-09 |
| Quarterly report | 10-Q | 2022-08-05 | 2022-06-30 |
| Major company event | 8-K | 2022-08-04 | 2022-08-03 |
| Major company event | 8-K | 2022-07-22 | 2022-07-18 |
| Insider trade | 4 | 2022-07-21 | 2022-07-20 |
| 15-12G | - | 2022-07-21 | - |
| Activist ownership stake | SC 13D | 2022-07-20 | - |
| Insider trade | 4 | 2022-07-19 | 2022-07-15 |
| New insider ownership | 3 | 2022-07-18 | 2022-07-15 |
| New insider ownership | 3 | 2022-07-18 | 2022-07-15 |
| New insider ownership | 3 | 2022-07-18 | 2022-07-15 |
| Major company event | 8-K | 2022-07-15 | 2022-07-15 |
| Insider trade | 4 | 2022-07-15 | 2022-07-13 |
| Delisting notice | 25-NSE | 2022-07-11 | - |
| Insider trade | 4 | 2022-07-11 | 2022-07-08 |
| Insider trade | 4 | 2022-07-11 | 2022-07-08 |
| Insider trade | 4 | 2022-07-11 | 2022-07-08 |
| Insider trade | 4 | 2022-07-11 | 2022-07-08 |
| Insider trade | 4 | 2022-07-11 | 2022-07-08 |
| Insider trade | 4 | 2022-07-11 | 2022-07-08 |
| Insider trade | 4 | 2022-07-11 | 2022-07-08 |
| Insider trade | 4 | 2022-07-11 | 2022-07-08 |
| New insider ownership | 3 | 2022-07-11 | 2022-07-08 |
| New insider ownership | 3 | 2022-07-11 | 2022-07-08 |
| New insider ownership | 3 | 2022-07-11 | 2022-07-08 |
| New insider ownership | 3 | 2022-07-11 | 2022-07-08 |