Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0000950170-25-070514
Filing Date
2025-05-13
Accepted
2025-05-13 17:05:08
Documents
11

Document Format Files

Seq Description Document Type Size
1 DEFA14A adtn-20250513.htm   iXBRL DEFA14A 30873
  Complete submission text file 0000950170-25-070514.txt   77003

Data Files

Seq Description Document Type Size
2 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT adtn-20250513.xsd EX-101.SCH 7248
13 EXTRACTED XBRL INSTANCE DOCUMENT adtn-20250513_htm.xml XML 1298
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.: 25941211
SIC: 3661 Telephone & Telegraph Apparatus
(CF Office: 04 Manufacturing)