ADTRAN HOLDINGS INC (ADTN) — SEC filings
Information Technology · NASDAQ
ADTRAN HOLDINGS INC (ADTN) has 5 recent SEC EDGAR filings in our data — annual (10-K), quarterly (10-Q) and current (8-K) reports, most recently filed 2026-05-05.
Recent filings
| Filed | Form | Type | Document |
|---|---|---|---|
| 2026-05-05 | 8-K | Current report (material event) | View document |
| 2026-05-05 | 10-Q | Quarterly report | View document |
| 2026-02-26 | 8-K | Current report (material event) | View document |
| 2026-02-26 | 10-K | Annual report | View document |
| 2025-11-04 | 10-Q | Quarterly report | View document |
We store the recent 10-K/10-Q reports and earnings 8-Ks; the complete filing history is on SEC EDGAR.
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Last updated 2026-05-05 (most recent filing date).
Informational only — NOT financial advice. Filings are sourced from SEC EDGAR and shown with their reported filing dates.