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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)

IRS No.: 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
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