Every material Form 8-K ADTRAN Holdings, Inc. has filed with the SEC since August 10, 2026, read and summarized by AI: what happened, the key figures, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). Newest first; each brief links to its own page and to the filing on SEC.gov.
ADTRAN Holdings reported third quarter 2026 revenue of $281.2 million, up 0.6% from a year earlier, and a GAAP diluted loss of $0.10 per share, compared with a loss of $0.12 a year earlier. The company said revenue came in slightly below the midpoint of its guidance range and gave fourth quarter 2026 revenue guidance of $272.0 million to $292.0 million, with a non-GAAP operating margin of 1.0% to 5.0%.
Q3 2026 revenue was $281.2 million, up 0.6% from $279.4 million in Q3 2025; the CEO said revenue was slightly below the midpoint of guidance
GAAP diluted loss per share was $0.10 versus $0.12 a year earlier; non-GAAP diluted earnings per share was $0.09
Q4 2026 revenue is expected between $272.0 million and $292.0 million, with non-GAAP operating margin of 1.0% to 5.0%
Net cash used in operating activities was $24.5 million in the quarter; cash, cash equivalents and restricted cash were $71.7 million
ADTRAN Holdings expanded its Board from seven to eight directors and elected Dr. Christian Terlinde as an independent director effective October 27, 2026. The filing describes him as Group Chief Financial Officer of Flender International GmbH and a former CFO of publicly listed JOST Werke SE, which gives the Board added finance and international experience.
Board size increased from seven to eight directors by unanimous vote on October 27, 2026
Dr. Christian H. Terlinde is currently Group Chief Financial Officer of Flender International GmbH
Board determined he qualifies as an independent director under Nasdaq listing standards
Director compensation follows standard non-employee director arrangements described in the March 27, 2026 proxy statement
ADTRAN Holdings' majority-owned unit Adtran Networks SE amended the employment agreement of Chief Technology Officer Christoph Glingener on August 10, 2026. The amendment extends the term through December 31, 2026, keeps his base salary at €400,000, and sets new incentive and equity awards tied to revenue, Adjusted EBIT and relative total shareholder return.
Base salary remains €400,000; total annual remuneration capped at €2,800,000.
Target long-term financial plan PSU award of €903,729, covering performance from January 1, 2026 through December 31, 2028, with a cap of €2,000,000.
Annual RSU target equal to 75% of base salary, capped at €903,729; cash bonus target equal to 60% of base salary.
The Compensation Committee does not intend to grant annual market-based PSUs to named executive officers going forward.
Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.
Only material 8-Ks get a brief: results, deals, executive changes, restructuring, impairments, delisting notices, restatements, cybersecurity incidents and other disclosed events. Routine filings (vote results, exhibits only) are skipped. Every ADTRAN Holdings, Inc. filing is on SEC EDGAR ↗. 8-K briefs of other companies →