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ADTRAN Holdings Inc.
ADTN · SEC Filings
website
3.3K
ADTRAN Holdings, Inc. develops and provides network access solutions. It is a global provider of ope...
Price
4.29
Market Cap
349.62 M
Float
81.5 M
Country
US
Sector
Technology
Exchange
NASDAQ
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TYPE
HEADLINE
FILED AT
TYPE
HEADLINE
FILED AT
TYPE
HEADLINE
FILED AT
TYPE
HEADLINE
FILED AT
All
Chronological
Financials
Registrations
Prospectus
News
Proxies
Ownerships
Other
ADTRAN Holdings Inc.
ADTN · SEC Filings
81.5 M
Float
4.29
Price
349.62 M
Market Cap
Financials
TYPE
HEADLINE
FILED AT
10-Q
Form 10-Q - Quarterly report [Sections 13 or 15(d)]
Nov 5, 2026
10-Q
Form 10-Q - Quarterly report [Sections 13 or 15(d)]
Aug 4, 2026
11-K
Form 11-K - Annual report of employee stock purchase, savings and similar plans
Jun 26, 2026
10-Q
Form 10-Q - Quarterly report [Sections 13 or 15(d)]
May 5, 2026
10-K
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]
Feb 26, 2026
10-Q
Form 10-Q - Quarterly report [Sections 13 or 15(d)]
Nov 4, 2025
News
TYPE
HEADLINE
FILED AT
Prospectus
TYPE
HEADLINE
FILED AT
425
Common Stock, Par Value $0.01
Jul 8, 2022
425
Common Stock, Par Value $0.01
Jul 7, 2022
425
Registration
Jul 6, 2022
425
Registration
Jul 6, 2022
425
Registration
Jul 6, 2022
425
Registration
Jul 6, 2022
Registrations
TYPE
HEADLINE
FILED AT
S-3ASR
July 2026 SHELF
Jul 17, 2026
S-3
SHELF | Offering amount: $200,000,000.00 EFFECTIVE
Nov 18, 2024
S-8
Form S-8 - Securities to be offered to employees in employee benefit plans
May 10, 2024
S-8
Form S-8 - Securities to be offered to employees in employee benefit plans
May 10, 2024
S-3ASR
Common Stock
Dec 23, 2022
S-8
Registration
Jul 11, 2022
Proxies
TYPE
HEADLINE
FILED AT
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
May 1, 2026
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Mar 27, 2026
DEF 14A
Form DEF 14A - Other definitive proxy statements
Mar 27, 2026
PRE 14A
Form PRE 14A - Other preliminary proxy statements
Mar 13, 2026
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Jun 6, 2025
DEFR14A
Form DEFR14A - Revised definitive proxy soliciting materials
Jun 6, 2025
Ownerships
TYPE
HEADLINE
FILED AT
4
NEW
Santo Timothy P (Reporting)
Nov 9, 2026
4
NEW
STANTON THOMAS R (Reporting)
Nov 9, 2026
4
Wilson James Denson Jr (Reporting)
Nov 5, 2026
4
Terlinde Christian (Reporting)
Nov 2, 2026
3
Terlinde Christian (Reporting)
Nov 2, 2026
SCHEDULE 13G
VANGUARD CAPITAL MANAGEMENT LLC (Filed by)
Oct 30, 2026
Chronological
TYPE
HEADLINE
FILED AT
Other
TYPE
HEADLINE
FILED AT
SD
Form SD - Specialized disclosure report
May 12, 2026
SD
Form SD - Specialized disclosure report
May 29, 2025
EFFECT
Form EFFECT - Notice of Effectiveness
Nov 27, 2024
CORRESP
Form CORRESP - Correspondence
Nov 22, 2024
LETTER
Form UPLOAD - SEC-generated letter
Nov 21, 2024
LETTER
Form UPLOAD - SEC-generated letter
Nov 4, 2024
