ADTRAN

SEC Filings

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Date Filing Type Filing Description Download / View
December 23, 2022
Form S-3ASR
Automatic shelf registration statement of securities of well-known seasoned issuers
December 9, 2022
Form 4
Statement of Changes in Beneficial Ownership
December 9, 2022
Form 4
Statement of Changes in Beneficial Ownership
December 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
December 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
December 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
December 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
December 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
December 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
December 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
December 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
December 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
December 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 21, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 21, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 21, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 18, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 18, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 18, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 17, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 17, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 17, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 14, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 14, 2022
Form 4
Statement of Changes in Beneficial Ownership
November 14, 2022
Form 4
Statement of Changes in Beneficial Ownership
September 8, 2022
Form SC 13G
Statement of Ownership
September 8, 2022
Form 4/A
Amended Statement of Changes in Beneficial Ownership
September 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
September 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
September 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
September 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
September 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
September 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
September 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
September 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
September 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
September 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
September 2, 2022
Form 3
Initial Statement of Beneficial Ownership
September 2, 2022
Form 4/A
Amended Statement of Changes in Beneficial Ownership
September 2, 2022
Form 4/A
Amended Statement of Changes in Beneficial Ownership
August 25, 2022
Form 4
Statement of Changes in Beneficial Ownership
August 15, 2022
Form 4
Statement of Changes in Beneficial Ownership
August 15, 2022
Form 4
Statement of Changes in Beneficial Ownership
August 11, 2022
Form 4
Statement of Changes in Beneficial Ownership
August 11, 2022
Form 4
Statement of Changes in Beneficial Ownership
August 11, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 21, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 21, 2022
Form 15-12G
Termination of Registration of a Class of Security under Section 12(g)
July 19, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 18, 2022
Form 3
Initial Statement of Beneficial Ownership
July 18, 2022
Form 3
Initial Statement of Beneficial Ownership
July 18, 2022
Form 3
Initial Statement of Beneficial Ownership
July 15, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 11, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 11, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 11, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 11, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 11, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 11, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 11, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 11, 2022
Form 3
Initial Statement of Beneficial Ownership
July 11, 2022
Form S-8
Securities Registration: Employee Benefit Plan
July 11, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 11, 2022
Form 3
Initial Statement of Beneficial Ownership
July 11, 2022
Form S-8
Securities Registration: Employee Benefit Plan
July 11, 2022
Form 3
Initial Statement of Beneficial Ownership
July 11, 2022
Form 3
Initial Statement of Beneficial Ownership
July 11, 2022
Form 3
Initial Statement of Beneficial Ownership
July 11, 2022
Form 3
Initial Statement of Beneficial Ownership
July 11, 2022
Form 3
Initial Statement of Beneficial Ownership
July 11, 2022
Form 3
Initial Statement of Beneficial Ownership
July 11, 2022
Form 8-K12B
Notification that a class of securities of successor issuer is demed to be registered pursuant to section 12(b)
July 11, 2022
Form 25-NSE
Notification filed by National Security Exchange to report the removal from listing and registration of matured, redeemed or retired securities Initial Filing Amendments
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
July 7, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
July 7, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
July 6, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
July 6, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
July 6, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
July 6, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
July 1, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 6, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 3, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 3, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 3, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 3, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 3, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 3, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 3, 2022
Form 4
Statement of Changes in Beneficial Ownership
June 3, 2022
Form 4
Statement of Changes in Beneficial Ownership
May 13, 2022
Form 4
Statement of Changes in Beneficial Ownership
May 12, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 29, 2022
Form DEFA14A
Additional Proxy Soliciting Materials (definitive)
March 9, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 9, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 7, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 1, 2022
Form 4
Statement of Changes in Beneficial Ownership
March 1, 2022
Form 4
Statement of Changes in Beneficial Ownership
February 17, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
February 17, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 31, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 31, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 31, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 26, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 26, 2022
Form 4
Statement of Changes in Beneficial Ownership
January 25, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 25, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 25, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 24, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 24, 2022
Form 4/A
Amended Statement of Changes in Beneficial Ownership
January 24, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 24, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 21, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 20, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 20, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 14, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 13, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 13, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 11, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 11, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 11, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 11, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 7, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 7, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 7, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 7, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 6, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 5, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions
January 4, 2022
Form 4
Statement of Changes in Beneficial Ownership
January 4, 2022
Form 4
Statement of Changes in Beneficial Ownership
January 4, 2022
Form 4
Statement of Changes in Beneficial Ownership
January 4, 2022
Form 4
Statement of Changes in Beneficial Ownership
January 4, 2022
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2022
Form 425
Filing of certain prospectuses and communications in connection with business combination transactions