ADTRAN

SEC Filings

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Date Filing Type Filing Description Download / View
December 3, 2020
Form 4/A
Amended Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4/A
Amended Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4/A
Amended Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
December 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 18, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 18, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 18, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 18, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 18, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 18, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 18, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 17, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 16, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 16, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 16, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 16, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 16, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 16, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 12, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 12, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 12, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 12, 2020
Form 4
Statement of Changes in Beneficial Ownership
November 12, 2020
Form 4
Statement of Changes in Beneficial Ownership
October 29, 2020
Form S-8
Securities Registration: Employee Benefit Plan
October 29, 2020
Form S-8
Securities Registration: Employee Benefit Plan
September 16, 2020
Form 4
Statement of Changes in Beneficial Ownership
September 16, 2020
Form 4
Statement of Changes in Beneficial Ownership
September 10, 2020
Form 4
Statement of Changes in Beneficial Ownership
September 8, 2020
Form 4
Statement of Changes in Beneficial Ownership
September 8, 2020
Form 4
Statement of Changes in Beneficial Ownership
September 8, 2020
Form 4
Statement of Changes in Beneficial Ownership
September 8, 2020
Form 4
Statement of Changes in Beneficial Ownership
September 8, 2020
Form 4
Statement of Changes in Beneficial Ownership
September 8, 2020
Form 4
Statement of Changes in Beneficial Ownership
September 8, 2020
Form 4
Statement of Changes in Beneficial Ownership
September 4, 2020
Form 4
Statement of Changes in Beneficial Ownership
September 4, 2020
Form 4
Statement of Changes in Beneficial Ownership
June 5, 2020
Form 4
Statement of Changes in Beneficial Ownership
June 5, 2020
Form 4
Statement of Changes in Beneficial Ownership
June 5, 2020
Form 4
Statement of Changes in Beneficial Ownership
June 5, 2020
Form 4
Statement of Changes in Beneficial Ownership
June 5, 2020
Form 4
Statement of Changes in Beneficial Ownership
June 5, 2020
Form 4
Statement of Changes in Beneficial Ownership
June 5, 2020
Form 4
Statement of Changes in Beneficial Ownership
June 5, 2020
Form 4
Statement of Changes in Beneficial Ownership
June 5, 2020
Form 4
Statement of Changes in Beneficial Ownership
May 14, 2020
Form 4
Statement of Changes in Beneficial Ownership
April 13, 2020
Form DEFA14A
Additional Proxy Soliciting Materials (definitive)
April 2, 2020
Form DEFA14A
Additional Proxy Soliciting Materials (definitive)
March 17, 2020
Form 4
Statement of Changes in Beneficial Ownership
March 10, 2020
Form 4/A
Amended Statement of Changes in Beneficial Ownership
March 9, 2020
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2020
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2020
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2020
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2020
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2020
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2020
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2020
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2020
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2020
Form 4
Statement of Changes in Beneficial Ownership
February 26, 2020
Form 4
Statement of Changes in Beneficial Ownership
February 19, 2020
Form 4
Statement of Changes in Beneficial Ownership
January 22, 2020
Form 4
Statement of Changes in Beneficial Ownership
January 22, 2020
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2020
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2020
Form 4
Statement of Changes in Beneficial Ownership