ADTRAN

SEC Filings

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Date Filing Type Filing Description Download / View
April 4, 2024
Form DEFA14A
Additional Proxy Soliciting Materials (definitive)
March 27, 2024
Form ARS
Annual Report to Security Holders
March 27, 2024
Form DEFA14A
Additional Proxy Soliciting Materials (definitive)
February 29, 2024
Form NT 10-K
Notification that Annual Report will be submitted late
January 30, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 30, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 30, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 30, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 23, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 23, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2024
Form 4
Statement of Changes in Beneficial Ownership
January 3, 2024
Form 4
Statement of Changes in Beneficial Ownership