Form 8-K - Current report:
SEC Accession No. 0001193125-26-018367
Filing Date
2026-01-22
Accepted
2026-01-21 19:34:42
Documents
14
Period of Report
2026-01-21
Items
Item 2.02: Results of Operations and Financial Condition
Item 7.01: Regulation FD Disclosure
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K adtn-20260121.htm   iXBRL 8-K 46527
2 EX-99.1 adtn-ex99_1.htm EX-99.1 52567
3 EX-99.2 adtn-ex99_2.htm EX-99.2 40489
4 GRAPHIC img50768744_0.jpg GRAPHIC 15313
5 GRAPHIC img51692265_0.jpg GRAPHIC 15313
  Complete submission text file 0001193125-26-018367.txt   304569

Data Files

Seq Description Document Type Size
6 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT adtn-20260121.xsd EX-101.SCH 25023
16 EXTRACTED XBRL INSTANCE DOCUMENT adtn-20260121_htm.xml XML 4760
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: 8-K | Act: 34 | File No.: 001-41446 | Film No.: 26549409
SIC: 3661 Telephone & Telegraph Apparatus
(CF Office: 04 Manufacturing)