Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0001193125-25-127881
Filing Date
2025-05-27
Accepted
2025-05-27 17:27:45
Documents
2

Document Format Files

Seq Description Document Type Size
1 DEFA14A d12892ddefa14a.htm DEFA14A 32112
2 GRAPHIC g12892g0523233258444.jpg GRAPHIC 2864
  Complete submission text file 0001193125-25-127881.txt   37259
Mailing Address 901 EXPLORER BLVD HUNTSVILLE AL 35806
Business Address 901 EXPLORER BLVD HUNTSVILLE AL 35806 256-963-8220
ADTRAN Holdings, Inc. (Filer) CIK: 0000926282 (see all company filings)

EIN.: 872164282 | Fiscal Year End: 1231
Type: DEFA14A | Act: 34 | File No.: 001-41446 | Film No.: 25990036
SIC: 3661 Telephone & Telegraph Apparatus
(CF Office: 04 Manufacturing)