ADTRAN

SEC Filings

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Date Filing Type Filing Description Download / View
December 28, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 27, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 23, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 22, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 20, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 20, 2021
Form 4/A
Amended Statement of Changes in Beneficial Ownership
December 20, 2021
Form 4/A
Amended Statement of Changes in Beneficial Ownership
December 17, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 17, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 17, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 17, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 13, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 13, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 8, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 7, 2021
Form 4/A
Amended Statement of Changes in Beneficial Ownership
December 7, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 7, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
December 2, 2021
Form DEFM14A
Proxy Statement - Merger or Acquistion (definitive)
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
December 2, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 24, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
November 24, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
November 23, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
November 19, 2021
Form 4/A
Amended Statement of Changes in Beneficial Ownership
November 19, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 19, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 19, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 19, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 19, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 19, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 19, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 18, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 17, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 17, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 17, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 17, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 17, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 17, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 17, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 15, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 15, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 15, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 15, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 15, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 12, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
November 12, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
November 12, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 12, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 12, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 12, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 12, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 12, 2021
Form 4
Statement of Changes in Beneficial Ownership
November 2, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
November 2, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
November 2, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4/A
Amended Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
September 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
August 31, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 31, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 31, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 31, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 31, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 31, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
August 30, 2021
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
June 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 7, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 4, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 4, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 4, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 4, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 4, 2021
Form 4
Statement of Changes in Beneficial Ownership
June 4, 2021
Form 4
Statement of Changes in Beneficial Ownership
March 30, 2021
Form DEFA14A
Additional Proxy Soliciting Materials (definitive)
March 8, 2021
Form 4/A
Amended Statement of Changes in Beneficial Ownership
March 8, 2021
Form 4
Statement of Changes in Beneficial Ownership
March 8, 2021
Form 4
Statement of Changes in Beneficial Ownership
March 8, 2021
Form 4
Statement of Changes in Beneficial Ownership
March 8, 2021
Form 4
Statement of Changes in Beneficial Ownership
March 8, 2021
Form 4
Statement of Changes in Beneficial Ownership
March 8, 2021
Form 4
Statement of Changes in Beneficial Ownership
March 8, 2021
Form 4
Statement of Changes in Beneficial Ownership
March 8, 2021
Form 4
Statement of Changes in Beneficial Ownership
March 8, 2021
Form 4
Statement of Changes in Beneficial Ownership
March 1, 2021
Form 4
Statement of Changes in Beneficial Ownership
February 17, 2021
Form 4
Statement of Changes in Beneficial Ownership
February 8, 2021
Form 3
Initial Statement of Beneficial Ownership
January 5, 2021
Form 4
Statement of Changes in Beneficial Ownership
January 5, 2021
Form 4
Statement of Changes in Beneficial Ownership
January 5, 2021
Form 4
Statement of Changes in Beneficial Ownership
January 5, 2021
Form 4
Statement of Changes in Beneficial Ownership
January 5, 2021
Form 4
Statement of Changes in Beneficial Ownership
January 5, 2021
Form 4
Statement of Changes in Beneficial Ownership