Form SD - Specialized disclosure report:
SEC Accession No. 0000950170-25-078965
Filing Date
2025-05-29
Accepted
2025-05-29 16:14:51
Documents
2

Document Format Files

Seq Description Document Type Size
1 SD 25_specialized_disclosur.htm SD 27672
2 EX-1.01 adtn-ex1_01.htm EX-1.01 78779
  Complete submission text file 0000950170-25-078965.txt   107735
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: SD | Act: 34 | File No.: 001-41446 | Film No.: 251003522
SIC: 3661 Telephone & Telegraph Apparatus
(CF Office: 04 Manufacturing)