# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000950170-22-002054
Filing Date
2022-02-25
Accepted
2022-02-25 11:01:06
Documents
148
Period of Report
2021-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | adtn-20211231.htm iXBRL | 10-K | 6603226
2 | EX-10.1 | adtn-ex10_1.htm | EX-10.1 | 94732
3 | EX-21 | adtn-ex21.htm | EX-21 | 42643
4 | EX-23 | adtn-ex23.htm | EX-23 | 5394
5 | EX-24 | adtn-ex24.htm | EX-24 | 16782
6 | EX-31 | adtn-ex31.htm | EX-31 | 30355
7 | EX-32 | adtn-ex32.htm | EX-32 | 15751
8 | GRAPHIC | img226682028_0.jpg | GRAPHIC | 36096
9 | GRAPHIC | img226682028_1.jpg | GRAPHIC | 216318
| Complete submission text file | 0000950170-22-002054.txt |  | 30377650

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
10 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | adtn-20211231.xsd | EX-101.SCH | 123046
11 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | adtn-20211231_cal.xml | EX-101.CAL | 156418
12 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | adtn-20211231_pre.xml | EX-101.PRE | 816906
13 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | adtn-20211231_def.xml | EX-101.DEF | 442203
14 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | adtn-20211231_lab.xml | EX-101.LAB | 1056510
142 | EXTRACTED XBRL INSTANCE DOCUMENT | adtn-20211231_htm.xml | XML | 8080528

Mailing Address 901 EXPLORER BLVD HUNTSVILLE AL 35806
Business Address 901 EXPLORER BLVD HUNTSVILLE AL 35806 256-963-8220
ADTRAN INC (Filer) CIK: 0000926282 (see all company filings)

EIN.: 630918200 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 000-24612 | Film No.: 22676049
SIC: 3661 Telephone & Telegraph Apparatus