Form 8-K - Current report:
SEC Accession No. 0001193125-21-368041
Filing Date
2021-12-28
Accepted
2021-12-28 17:26:59
Documents
12
Period of Report
2021-12-28
Items
Item 8.01: Other Events

Document Format Files

Seq Description Document Type Size
1 8-K d281397d8k.htm   iXBRL 8-K 253446
  Complete submission text file 0001193125-21-368041.txt   392630

Data Files

Seq Description Document Type Size
2 XBRL TAXONOMY EXTENSION SCHEMA adtn-20211228.xsd EX-101.SCH 2886
3 XBRL TAXONOMY EXTENSION LABEL LINKBASE adtn-20211228_lab.xml EX-101.LAB 17374
4 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE adtn-20211228_pre.xml EX-101.PRE 10949
6 EXTRACTED XBRL INSTANCE DOCUMENT d281397d8k_htm.xml XML 3268
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: 8-K | Act: 34 | File No.: 000-24612 | Film No.: 211525689
SIC: 3661 Telephone & Telegraph Apparatus