DEFA14AThe Ballot
ADTRAN Holdings, Inc. files DEFA14A
Filed Mar 27, 2026 · 3mo ago · Accession 0001193125-26-127317
Plain English
DEFA14A filed with the SEC.
Read the source below for the full document.
Filing details
- Company
- ADTRAN Holdings, Inc.
- Ticker
- ADTN
- CIK
- 926282
- Form type
- DEFA14A
- Filing date
- Mar 27, 2026
- Report date
- —
- Document
- adtn-20260325.htm
- Size
- 562 KB