ADTRAN Holdings, Inc. (ADTN) Current Reports & Earnings Releases
Upcoming
- 2026-11-03 Earnings Release Estimated
| Filed | Form | Items | Filing |
|---|---|---|---|
| 2026-08-10 | 8-K | Officer / Director Changes, Financial Statements & Exhibits | SEC |
| 2026-08-04 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2026-07-23 | 8-K | Material Agreement, Termination of Agreement, Direct Financial Obligation, Financial Statements & Exhibits | SEC |
| 2026-07-22 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2026-06-26 | 8-K | Officer / Director Changes, Other Events, Financial Statements & Exhibits | SEC |
| 2026-05-18 | 8-K | Charter Amendments, Shareholder Vote Results, Financial Statements & Exhibits | SEC |
| 2026-05-05 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2026-04-07 | 8-K | Officer / Director Changes, Financial Statements & Exhibits | SEC |
| 2026-02-26 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2026-01-22 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2025-12-11 | 8-K | Officer / Director Changes, Financial Statements & Exhibits | SEC |
| 2025-11-04 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2025-09-22 | 8-K | Material Agreement, Direct Financial Obligation, Unregistered Sales, Financial Statements & Exhibits | SEC |
| 2025-09-17 | 8-K | Material Agreement, Other Events, Financial Statements & Exhibits | SEC |
| 2025-08-05 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2025-07-30 | 8-K | Shareholder Vote Results, Other Events, Financial Statements & Exhibits | SEC |
| 2025-07-16 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2025-05-28 | 8-K | Results of Operations, Financial Statements & Exhibits | SEC |
| 2025-05-27 | 8-K | Other Events, Financial Statements & Exhibits | SEC |
| 2025-05-13 | 8-K | Non-Reliance on Financials, Other Events, Financial Statements & Exhibits | SEC |
| 2025-05-12 | 8-K | Material Agreement, Financial Statements & Exhibits | SEC |
| 2025-05-08 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2025-04-16 | 8-K | Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2025-03-07 | 8-K | Officer / Director Changes, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2025-02-27 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2024-11-07 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2024-08-30 | 8-K | Officer / Director Changes, Financial Statements & Exhibits | SEC |
| 2024-08-06 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2024-08-02 | 8-K | Officer / Director Changes | SEC |
| 2024-06-10 | 8-K | Material Agreement, Direct Financial Obligation, Financial Statements & Exhibits | SEC |
| 2024-05-09 | 8-K | Officer / Director Changes, Shareholder Vote Results, Financial Statements & Exhibits | SEC |
| 2024-05-07 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2024-05-03 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2024-04-17 | 8-K | Item 2.05, Financial Statements & Exhibits | SEC |
| 2024-03-15 | 8-K | Results of Operations, Financial Statements & Exhibits | SEC |
| 2024-02-27 | 8-K | Results of Operations, Reg FD Disclosure, Financial Statements & Exhibits | SEC |
| 2024-02-20 | 8-K | Non-Reliance on Financials | SEC |
| 2024-01-22 | 8-K | Material Agreement, Direct Financial Obligation, Financial Statements & Exhibits | SEC |
Sourced from SEC EDGAR 8-K/6-K filings. 8-K is the current-report form for US domestic issuers (Item 2.02 = earnings release); 6-K is the equivalent for foreign private issuers, including ADRs. Originals live on sec.gov.