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ADTRAN Holdings, Inc. — Investor Relations & Filings

Ticker · ADTN ISIN · US00486H1059 LEI · 549300XWTHXJVGKWU616 F Manufacturing
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Filings indexed 2,237 across all filing types
Latest filing 2026-03-12 Major Shareholding Noti…
Country US United States of America
Listing F ADTN

About ADTRAN Holdings, Inc.

https://www.adtran.com/

ADTRAN Holdings, Inc. is a global provider of open, disaggregated networking and communications solutions. The company's portfolio includes hardware, software, and services designed for telecommunication service providers and other network operators. Its offerings encompass fiber broadband access, access and aggregation technologies, and open optical networking systems. These solutions enable the delivery of voice, data, video, and high-speed internet services to residential and business customers. ADTRAN also develops AI-powered software platforms, such as Mosaic One, to simplify network operations and management, providing end-to-end visibility and control from the network core to the subscriber premises.

Recent filings

Filing Released Lang Actions
Major Shareholding Notification 2026
Major Shareholding Notification Classification · 1% confidence The document is a formal notification of major holdings, specifically referencing 'Article 40, Section 1 of the WpHG' (German Securities Trading Act). It details the acquisition/disposal of voting rights and instruments by The Goldman Sachs Group, Inc. in Adtran Holdings, Inc. This fits the definition of a 'Major Shareholding Notification' (MRQ), which tracks changes in significant share ownership levels.
2026-03-12 English
Major Shareholding Notification 2026
Major Shareholding Notification Classification · 1% confidence The document is a formal notification of major holdings (threshold crossing) filed by Morgan Stanley regarding Adtran Holdings, Inc. It explicitly references 'Article 40, Section 1 of the WpHG' (German Securities Trading Act) and provides detailed tables on voting rights and financial instruments. This is a standard regulatory disclosure for significant share ownership changes, which falls under the 'Major Shareholding Notification' category.
2026-03-10 English
Major Shareholding Notification 2026
Major Shareholding Notification Classification · 1% confidence The document is a formal notification of major holdings (voting rights) filed by Morgan Stanley regarding Adtran Holdings, Inc. It explicitly references 'Article 40, Section 1 of the WpHG' (German Securities Trading Act) and provides detailed tables on voting rights, instruments, and the chain of controlled undertakings. This fits the definition of a Major Shareholding Notification (MRQ).
2026-03-09 English
Major Shareholding Notification 2026
Major Shareholding Notification Classification · 1% confidence The document is a formal notification of major holdings (voting rights) filed by Morgan Stanley regarding Adtran Holdings, Inc. It explicitly references 'Article 40, Section 1 of the WpHG' (German Securities Trading Act) and provides detailed tables regarding the acquisition/disposal of shares and voting rights. This fits the definition of a 'Major Shareholding Notification' (MRQ) as it details the crossing of ownership thresholds.
2026-03-07 English
Adtran Holdings, Inc.: Jacqueline Hourigan Rice, Sale of 14,406 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059)
Director's Dealing Classification · 1% confidence The document is a formal notification of a transaction in shares by a person discharging managerial responsibilities (a member of the Board of Directors). It explicitly follows the regulatory format for 'Notification and public disclosure of transactions by persons discharging managerial responsibilities', which is the standard definition for a Director's Dealing report.
2026-03-06 English
Major Shareholding Notification 2026
Major Shareholding Notification Classification · 1% confidence The document is a formal notification of major holdings (voting rights) filed by BlackRock, Inc. regarding Adtran Holdings, Inc. It explicitly references 'Article 40, Section 1 of the WpHG' (German Securities Trading Act) and is titled 'Notification of Major Holdings'. This fits the definition of a Major Shareholding Notification (MRQ), which tracks changes in significant share ownership levels.
2026-03-05 English

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