Common Stock, Par Value $0.01 per share
- Symbol
- ADTN
- Exchange
- NASDAQ
- Classification
- COMMON
- Status
- Current
Current Report · Items 5.02, 8.01, 9.01 · 8-K
ADTRAN Holdings, Inc.
ADTNNASDAQEQUITYCurrent
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · Other Events
Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On October 27, 2026, the Board of Directors (the “Board”) of ADTRAN Holdings, Inc.…
Press release in this filing
ADTRAN Holdings, Inc. Appoints Dr. Christian H. Terlinde to Board of Directors →Company context
ADTRAN Holdings, Inc. (NASDAQ: ADTN and FSE: QH9) is the parent company of Adtran, Inc., a leading global provider of open, disaggregated networking and communications solutions that enable voice, data, video and internet communications across any network infrastructure. From the cloud edge to the subscriber edge, Adtran empowers communications service providers around the world to manage and scale services that connect people, places and things. Adtran solutions are used by service providers, private enterprises, government organizations and millions of individual users worldwide. ADTRAN Holdings, Inc. is also the majority shareholder of Adtran Networks SE, formerly ADVA Optical Networking SE. Find more at Adtran.com, LinkedIn and X.
Current securities
Recent company filings
Registered securities in this filing
ADTRAN Holdings, Inc. · 8-K · Filed 2026-10-29
Disclosure sections
Item 5.02Item 5.02 - Departure/Election of Directors
Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
On October 27, 2026, the Board of Directors (the “Board”) of ADTRAN Holdings, Inc. (the “Company”), upon the recommendation of the Board’s Nominating and Corporate Governance Committee, voted unanimously to increase the size of the Board from seven (7) to eight (8) directors and to elect Christian Terlinde as a director, effective as of October 27, 2026 (the “Effective Date”). The Board has determined that Dr. Terlinde qualifies as an “independent director” under Nasdaq listing standards.
There are no arrangements or understandings between Dr. Terlinde and any other person pursuant to which Dr. Terlinde was selected as a director of the Company. There are no related person transactions (within the meaning of Item 404(a) of Regulation S-K promulgated by the Securities and Exchange Commission) between Dr. Terlinde and the Company. Dr. Terlinde will receive compensation for his Board service in accordance with the Company’s standard compensation arrangements for non-employee directors, which are described under the caption “2025 Director Compensation” in the Company’s definitive proxy statement on Schedule 14A filed with the Securities and Exchange Commission on March 27, 2026, as adjusted by the Board from time to time.
Item 8.01Item 8.01 - Other Events
Item 8.01 Other Events.
On October 29, 2026, the Company issued a press release announcing the appointment of Dr. Terlinde to the Board, which press release contains additional biographical information about Dr. Terlinde. A copy of this press release is attached hereto as Exhibit 99.1.
Filed exhibits (1)
Exhibit 99.1 ADTRAN Holdings, Inc. Appoints Dr. Christian H. Terlinde to Board of Directors Huntsville, Alabama, USA. - October 29, 2026 - ADTRAN Holdings, Inc. (NASDAQ: ADTN and FSE: QH9) (“ADTRAN Holdings” or the “Company”), a leading global provider of networking and communications solutions, today announced the appointment of Dr. Christian H. Terlinde as an independent member of its Board of Directors effective October 27, 2026. Dr. Terlinde brings more than two decades of senior financial leadership experience at large, multinational manufacturing companies, with operating experience spanning both European and North American markets. Having lived and worked in both the United States and Germany, he brings a firsthand international perspective to the Board that reflects the global nature of Adtran’s business and its customer base. Dr. Terlinde currently serves as Group Chief Financial Officer of Flender International GmbH, a multinational manufacturer of industrial and wind gearboxes. Prior to joining Flender, he served as Group Chief Financial Officer of JOST Werke SE (ETR: JST), a publicly traded German manufacturer of components for commercial and agricultural vehicles, …
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