# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000950170-25-031056
Filing Date
2025-03-03
Accepted
2025-03-03 17:21:29
Documents
155
Period of Report
2024-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | adtn-20241231.htm iXBRL | 10-K | 6040830
2 | EX-4.1 | adtn-ex4_1.htm | EX-4.1 | 45507
3 | EX-10.1(U) | adtn-ex10_1u.htm | EX-10.1(U) | 31227
4 | EX-10.1(Y) | adtn-ex10_1y.htm | EX-10.1(Y) | 37349
5 | EX-10.1(Z) | adtn-ex10_1z.htm | EX-10.1(Z) | 22926
6 | EX-19 | adtn-ex19.htm | EX-19 | 145225
7 | EX-21 | adtn-ex21.htm | EX-21 | 50240
8 | EX-23 | adtn-ex23.htm | EX-23 | 5014
9 | EX-24 | adtn-ex24.htm | EX-24 | 15981
10 | EX-31 | adtn-ex31.htm | EX-31 | 29775
11 | EX-32 | adtn-ex32.htm | EX-32 | 15695
12 | GRAPHIC | img143569204_0.jpg | GRAPHIC | 25491
13 | GRAPHIC | img229452591_0.jpg | GRAPHIC | 209306
14 | GRAPHIC | img229452591_1.jpg | GRAPHIC | 494445
| Complete submission text file | 0000950170-25-031056.txt |  | 28076795

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
15 | XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT | adtn-20241231.xsd | EX-101.SCH | 2789997
158 | EXTRACTED XBRL INSTANCE DOCUMENT | adtn-20241231_htm.xml | XML | 6041330

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: 10-K | Act: 34 | File No.: 001-41446 | Film No.: 25699662
SIC: 3661 Telephone & Telegraph Apparatus
(CF Office: 04 Manufacturing)