Skip to main content
ADTRAN

SEC Filings

You are provided with a link to a third-party Section 16 Reports website. Adtran, Inc. does not maintain or provide information directly to this site. Adtran, Inc. makes no representations or warranties with respect to the information contained herein and takes no responsibility for supplementing, updating, or correcting such information.

SEC RSS Feed (opens in new window)
SEC filing year list 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996
Date Filing Type Filing Description Download / View
August 30, 2024
Form 8-K
Current report filing
August 9, 2024
Form 10-Q
Quarterly Report
August 6, 2024
Form 8-K
Current report filing
August 2, 2024
Form 8-K
Current report filing
July 17, 2024
Form 4/A
Amended Statement of Changes in Beneficial Ownership
July 16, 2024
Form 4
Statement of Changes in Beneficial Ownership
July 8, 2024
Form SC 13G/A
Amended Statement of Ownership
June 28, 2024
Form 11-K
Annual Report of Employee Stock Plans
June 10, 2024
Form 8-K
Current report filing
May 29, 2024
Form 4
Statement of Changes in Beneficial Ownership
May 29, 2024
Form 4
Statement of Changes in Beneficial Ownership
May 22, 2024
Form SD
Specialized Disclosure Report
May 10, 2024
Form S-8
Securities Registration: Employee Benefit Plan
May 10, 2024
Form S-8
Securities Registration: Employee Benefit Plan
May 10, 2024
Form 10-Q
Quarterly Report
May 9, 2024
Form 8-K
Current report filing
May 7, 2024
Form 8-K
Current report filing
May 3, 2024
Form 8-K
Current report filing
April 17, 2024
Form 8-K
Current report filing
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)
March 27, 2024
Form DEF 14A
Proxy Statement (definitive)
March 25, 2024
Form SC 13G
Statement of Ownership
March 15, 2024
Form 10-K
Annual Report
March 15, 2024
Form 8-K
Current report filing
March 15, 2024
Form 10-Q/A
Amended Quarterly Report
March 15, 2024
Form 10-Q/A
Amended Quarterly Report
March 15, 2024
Form 10-Q/A
Amended Quarterly Report
February 29, 2024
Form NT 10-K
Notification that Annual Report will be submitted late
February 27, 2024
Form 8-K
Current report filing
February 20, 2024
Form 8-K
Current report filing
February 12, 2024
Form SC 13G
Statement of Ownership
February 12, 2024
Form SC 13G/A
Amended Statement of Ownership
February 12, 2024
Form SC 13G/A
Amended Statement of 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 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 22, 2024
Form SC 13G/A
Amended Statement of Ownership
January 22, 2024
Form 8-K
Current report filing
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