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NASDAQ · Utilities

ADTRAN Holdings, Inc. (ADTN)

ADTRAN Holdings, Inc. brought in $1.1B of revenue over the twelve months to September 30, 2026, up 10.1% from a year earlier. It posted a net loss of $25.1M. Operating cash flow minus capital spending left $98M of free cash flow in fiscal 2025. At September 30, 2026 it held $64.6M in cash. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on November 5, 2026.

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Key facts about ADTRAN Holdings, Inc.

Net worth

ADTRAN Holdings, Inc. has a market value (market cap) of $355.7M at the latest share price, and shareholders' equity of $119.6M on its balance sheet at September 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.

Revenue and profit

In fiscal 2025 revenue was $1.1B (+17.5% year on year), with a net loss of $45.7M. Over the 12 months to September 30, 2026: revenue $1.1B, net loss $25.1M.

Cash flow

In fiscal 2025 operations brought in $129.8M of cash; after $31.7M of capital spending, free cash flow was $98M.

Latest report

The latest periodic report (quarterly report, 10-Q) was filed with the SEC on November 5, 2026 and covers the period to September 30, 2026. Open on SEC EDGAR

Next earnings report

ADTRAN Holdings, Inc.'s next report is expected around January 21, 2027. That is an estimate from its filing rhythm, not a date the company has announced.

What ADTRAN Holdings, Inc. does

ADTRAN Holdings, Inc. is registered with the SEC under industry code SIC 3661 (Telephone & Telegraph Apparatus). Its shares trade on NASDAQ under the ticker ADTN.

Revenue and profit by year

Fiscal years as reported in annual reports. Amounts in USD.

Key figures

Earnings: every quarter and the next report date

Full financial statements: income, balance sheet and cash flow

Where ADTN ranks in Utilities

Latest fiscal year of every company in the sector with the figure reported. Revenue is ranked among companies reporting in US dollars; growth and margins among companies with at least 10 million of revenue. Utilities

Dividends

Per share as declared (or paid, where only that is reported), adjusted for stock splits the company itself restated. Yield is the latest fiscal year's dividend over the current price.

Latest SEC filings

What ADTRAN Holdings, Inc. has filed recently, newest first. Each links to the original document on SEC EDGAR.

1. November 5, 2026
   Quarterly report 10-Q · period to September 30, 2026Revenue rose 0.6% to $281.2M versus the same quarter last year; diluted EPS -$0.10 versus -$0.12.
2. November 3, 2026
   Quarterly results 8-K
3. October 30, 2026
   Passive stake (5% or more) SCHEDULE 13G
4. October 29, 2026
   Executive or director change 8-K
5. August 10, 2026
   Executive or director change 8-K
6. August 4, 2026
   Quarterly report 10-Q · period to June 30, 2026Revenue rose 6.1% to $281.1M versus the same quarter last year; diluted EPS -$0.13 versus -$0.24.
7. August 4, 2026
   Quarterly results 8-K
8. July 23, 2026
   Material agreement 8-K
9. July 22, 2026
   Quarterly results 8-K
10. July 17, 2026
    Shelf registration to sell securities S-3ASR

Recent insider filings (Forms 3, 4 and 144): 10, the latest on November 9, 2026. Insider transactions on SEC

What is ADTN worth? A DCF from its reported cash flow

Insider trades

What the people running ADTRAN Holdings, Inc. did with its shares, from the Form 4 filings they must send the SEC within two business days.

Insiders bought $675.1K worth of shares on the open market in the last 90 days and sold none.

All insider filings on SEC.gov · Where insiders are buying across the market

Who owns ADTN

Three views from three kinds of SEC filings, each with its own date. They overlap and are not added up.

5% holders

Anyone who owns more than 5% of a class of shares must say so on Schedule 13D (if they may seek to influence the company) or 13G (a passive holder). The latest filing of each holder is shown: 13G filings of the last 2 years, 13D of the last 3.

Latest filings below 5%: The Vanguard Group 0% (March 26, 2026); EGORA Ventures AG 4.97% (March 18, 2026); Divisar Capital Management LLC 4% (November 14, 2025); William Blair Investment Management, LLC 4.2% (May 9, 2025); DnB Asset Management AS 4.4% (April 23, 2025).

Largest institutional holders

Positions that investment managers reported on Form 13F for the quarter ended June 30, 2026, largest first, with the change on the quarter ended March 31, 2026. Managers file 13F up to 45 days after a quarter ends. 249 managers reported a position.

Insiders

Reported holdings of insiders who filed a Form 4 in the last 12 months: the shares each one held after their latest reported transaction. This is not the total held by all insiders.

12 insiders reported holding 2,216,104 shares in total, about $9.7M at the last price.

Schedule 13D/13G filings on SEC.gov

All filings on SEC EDGAR

Questions about ADTN

What does ADTRAN Holdings, Inc. do?

ADTRAN Holdings, Inc. is a company in the Utilities sector, listed on NASDAQ as ADTN. Its shares trade on NASDAQ under the ticker ADTN.

What is ADTRAN Holdings, Inc.'s net worth?

ADTRAN Holdings, Inc. has a market value (market cap) of $355.7M at the latest share price, and shareholders' equity of $119.6M on its balance sheet at September 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.

Is ADTRAN Holdings, Inc. profitable?

No. Over the twelve months to September 30, 2026 it reported a net loss of $25.1M on revenue of $1.1B.

How much revenue does ADTRAN Holdings, Inc. make?

Over the twelve months to September 30, 2026 ADTRAN Holdings, Inc. reported revenue of $1.1B. That is 10.1% more than a year earlier.

When did ADTRAN Holdings, Inc. last report?

Its most recent periodic report is the quarterly report (10-Q) filed on November 5, 2026. It covers the period to September 30, 2026. Its newest filing of any kind is the insider trade from November 9, 2026.

When is ADTRAN Holdings, Inc.'s next earnings report?

ADTRAN Holdings, Inc.'s next report is expected around January 21, 2027. That is an estimate from its filing rhythm, not a date the company has announced.

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Free, no password. An email when ADTN files with the SEC.

Where the numbers come from

Financial figures are the values ADTRAN Holdings, Inc. tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.

Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.