Welcome to our dedicated page for Adtran SEC filings (Ticker: ADTN), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Fiber-to-the-home line cards, open optical transport and cloud-managed access nodes make Adtran more than another hardware vendor—they also complicate its disclosures. Each 10-K details component pricing swings, government broadband subsidies and R&D for next-gen access chips. If you have ever searched for the Adtran annual report 10-K simplified or wondered where insiders bought shares, you know how dense these documents can be.
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ADTRAN Holdings, Inc., through its majority-owned subsidiary Adtran Networks SE, amended the employment agreement of Chief Technology Officer Christoph Glingener on December 9, 2025. The amendment extends his employment term through December 31, 2026 and increases his annual base salary to €400,000 starting October 1, 2025.
Under the revised agreement, Glingener remains eligible for an annual incentive cash bonus tied to the Company’s total revenue and adjusted earnings before interest and taxes, with a target equal to 60% of his base salary. He also continues to be eligible for annual grants of time-based RSUs and market-based PSUs based on the Company’s relative total shareholder return versus the Nasdaq Telecommunications Index, with the targeted size of the annual RSU grant and the market-based PSU grant to equal 40% of his base salary. The amendment reflects previously granted three-year performance-based PSUs tied to Adjusted EBIT through December 31, 2025 and keeps his total annual remuneration capped at €2,800,000.
ADTRAN Holdings, Inc. (ADTN) reported an insider purchase of its common stock by a reporting person who is both a Director and the Chairman & CEO. On 11/24/2025, this individual acquired 40,928 shares of ADTRAN common stock in an open-market transaction coded as a purchase. The weighted average purchase price reported was $7.33 per share, with individual trades executed between $7.32 and $7.33.
Following this transaction, the reporting person beneficially owns 982,095.51 shares of ADTRAN common stock in direct form. The filing notes that detailed information on the number of shares purchased at each separate price within the stated range is available upon request.
ADTRAN Holdings, Inc. (ADTN) filed a Form 4 reporting a small insider share disposition tied to tax withholding. The company’s Chief Revenue Officer reported that on 11/17/2025, 468 shares of common stock were withheld and delivered to the issuer at $7.33 per share to cover withholding taxes due upon vesting of previously granted restricted stock units. After this administrative transaction, the officer beneficially owns 128,223.486 shares of ADTRAN common stock directly and 4,246.809 shares indirectly through a 401(k) plan. This filing reflects routine equity compensation and tax settlement activity rather than an open-market sale.
ADTRAN Holdings (ADTN) Chairman and CEO reported a Form 4 transaction reflecting shares withheld for taxes. On 11/17/2025, 3,355 shares of common stock were disposed of in a transaction coded "F," meaning the shares were delivered back to the company to cover withholding taxes due on the vesting of previously granted restricted stock units.
After this tax-related share withholding, the reporting person directly beneficially owned 941,167.51 shares of ADTRAN Holdings common stock. The filing is an administrative update to reflect equity compensation and related tax obligations rather than an open-market stock sale.
ADTRAN Holdings (ADTN) filed its Q3 2025 report, showing continued top-line recovery with revenue of $279.4M (vs. $227.7M a year ago). Gross profit rose to $107.1M, while the company recorded an operating loss of $2.8M and a net loss of $7.8M or $0.12 per share.
Cash and cash equivalents were $93.7M with $7.5M in restricted cash; cash, cash equivalents and restricted cash totaled $101.2M as of September 30, 2025. The company issued $201.3M of 3.75% convertible senior notes due 2030, receiving net proceeds of $192.8M, and reduced the non-current revolving credit balance to $25.0M from $189.6M. Remaining performance obligations were $174.0M.
Management highlights ongoing obligations under the DPLTA with Adtran Networks and notes prior restated financials tied to inventory and RNCI accounting. The filing references identified material weaknesses and a non-public SEC information request received on August 4, 2025.
ADTRAN Holdings, Inc. (ADTN) reported that it announced financial results for the third quarter ended September 30, 2025. The company furnished a press release and investor presentation as exhibits, and executives will discuss the results on a live audio webcast.
The webcast is scheduled for November 4, 2025, at 9:30 a.m. Central Time (4:30 p.m. Central European Time), with an archived recording available for a limited time on the Investor Relations website. The information in the results announcement and presentation was furnished, not filed, under the Exchange Act.
Divisar Capital Management, LLC and Steven Baughman report shared beneficial ownership of 4,229,362 shares of ADTRAN Holdings, Inc. common stock, representing 5.3% of the class. The filing states Divisar acts as investment adviser to two funds that hold the shares and that Mr. Baughman, as CEO with voting and investment discretion, may be deemed beneficial owner. All reported shares are held with shared voting and dispositive power; neither reporting person claims sole voting or dispositive power. The ownership percentage is calculated from 80,052,167 shares outstanding as referenced in the filing.
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