Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0000950170-25-047718
Filing Date
2025-03-31
Accepted
2025-03-31 16:13:07
Documents
13

Document Format Files

Seq Description Document Type Size
1 DEFA14A adtn-20250327.htm   iXBRL DEFA14A 26312
2 GRAPHIC img230347257_0.jpg GRAPHIC 77037
3 GRAPHIC img230347257_1.jpg GRAPHIC 63523
  Complete submission text file 0000950170-25-047718.txt   411857

Data Files

Seq Description Document Type Size
4 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT adtn-20250327.xsd EX-101.SCH 7248
15 EXTRACTED XBRL INSTANCE DOCUMENT adtn-20250327_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.: 25793374
SIC: 3661 Telephone & Telegraph Apparatus
(CF Office: 04 Manufacturing)