ADTN ADTRAN Holdings, Inc.

company

SEC Filings & Insider Trading Activity 2026

Risk Factors

• • New financial risk: $201.3M convertible senior notes with 3.75% interest payable semi-annually, maturing Sept 15, 2030, issued Sept 19, 2025
• • Materially updated liquidity risk: $25M revolver borrowing by Adtran Networks, $232M additional borrowings limited by covenants as of Sept 30, 2025

What are the latest ADTN SEC filings in 2026?

ADTRAN Holdings, Inc. (ADTN) has filed a 10-K annual report on February 26, 2026, a 10-Q quarterly report on November 4, 2025, an 8-K current report on April 7, 2026 with the SEC. SignalX tracks every new SEC EDGAR filing daily, including 10-K, 10-Q, 8-K, and Form 4 insider transactions, with AI-powered summaries of key sections.

When did ADTN file its most recent 10-K annual report?

ADTRAN Holdings, Inc. (ADTN) filed its most recent 10-K annual report on February 26, 2026. The 10-K includes audited financial statements, business overview, risk factors, and management discussion, all available on SignalX with AI-generated summaries and XBRL financial data.

How do I view ADTN 10-Q quarterly reports?

ADTRAN Holdings, Inc. (ADTN)'s most recent 10-Q quarterly report was filed on November 4, 2025. SignalX displays every ADTN 10-Q with AI-generated summaries of the MD&A (Management Discussion & Analysis) and Risk Factors sections, plus links to the original SEC EDGAR document.

What 8-K current reports has ADTN filed recently?

ADTRAN Holdings, Inc. (ADTN)'s most recent 8-K was filed on April 7, 2026. 8-K filings disclose material corporate events such as earnings releases, executive changes, mergers, and other significant developments. SignalX surfaces each 8-K with item-level summaries so you can quickly see what happened.

Where can I find ADTN insider trading activity (Form 4)?

SignalX aggregates every ADTN Form 4 insider transaction from SEC EDGAR. Form 4 reports show when officers, directors, and 10% shareholders buy or sell company stock, with transaction code, share count, and price per share.

How often does ADTN file with the SEC?

ADTRAN Holdings, Inc. (ADTN) files a 10-K annual report once per year (typically within 60 days of fiscal year-end) and 10-Q quarterly reports three times per year. 8-K current reports are filed as needed when material events occur, and Form 4 insider transaction reports are due within two business days of a trade. SignalX monitors SEC EDGAR daily to surface every new ADTN filing with AI-powered analysis.

What is the difference between 10-K, 10-Q, and 8-K SEC filings?

A 10-K is a comprehensive annual report with audited financials, business overview, and risk factors. A 10-Q is a shorter quarterly report with unaudited financials and management discussion. An 8-K is a current report filed when a material event occurs — such as earnings releases, executive changes, acquisitions, or other significant developments. SignalX provides AI-generated summaries for all three filing types for ADTRAN Holdings, Inc. (ADTN).

What is ADTN's SEC CIK number?

ADTRAN Holdings, Inc. (ADTN)'s SEC CIK (Central Index Key) number is 926282. The CIK is a unique identifier assigned by the SEC to every filing entity. You can use CIK 926282 to look up all ADTN filings on SEC EDGAR, or browse them here on SignalX with AI-powered analysis.

Where can I find ADTN return on equity (ROE) and financial data?

SignalX extracts XBRL financial data from ADTRAN Holdings, Inc. (ADTN) 10-K annual filings, including revenue, net income, gross profit, operating income, EPS, total assets, stockholders' equity, and operating cash flow. Return on equity (ROE) can be derived from net income divided by stockholders' equity. Multi-year financial trends are displayed in the Financial Summary table above.