ADTN · Nasdaq · CIK 0000926282

ADTRAN Holdings, Inc.

ADTRAN Holdings, Inc.’s most recent SEC filing in our snapshot is a Form 8-K filed on Aug 10, 2026. In fiscal 2025 (year ended Dec 31, 2025) it reported revenue of $1.1B and net income of -$45.7M, according to its XBRL data on EDGAR. Its EDGAR record lists 28 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2025
$1.1B
Net income, FY2025
-$45.7M
Form 4 filings on record, past 12 months
28

Company overview

Legal name (as filed)
ADTRAN Holdings, Inc.
Ticker
ADTN
SEC Central Index Key (CIK)
0000926282
Industry (SIC)
Telephone & Telegraph Apparatus (code 3661)
Business address
HUNTSVILLE, AL
State or country of incorporation
—
Fiscal year ends
December 31
SEC filer category
Large accelerated filer
Position in SEC ticker list
#2873 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from ADTRAN Holdings, Inc.’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
$563.0MFY2021$1.0BFY2022$1.1BFY2023$922.7MFY2024$1.1BFY2025
Net income
-$8.6MFY2021-$2.0MFY2022-$268.9MFY2023-$459.9MFY2024-$45.7MFY2025
ADTN annual results
ItemFY2021
ended Dec 31, 2021		FY2022
ended Dec 31, 2022		FY2023
ended Dec 31, 2023		FY2024
ended Dec 31, 2024		FY2025
ended Dec 31, 2025
Revenue$563.0M$1.0B$1.1B$922.7M$1.1B
Net income-$8.6M-$2.0M-$268.9M-$459.9M-$45.7M
Diluted EPS-$0.18-$0.03-$3.43-$5.79-$0.52
Total assets$569.0M$1.9B$1.7B$1.2B$1.2B
Cash and equivalents$56.6M$108.6M$87.2M$76.0M$95.7M

XBRL tags used: revenue = RevenueFromContractWithCustomerExcludingAssessedTax; netIncome = NetIncomeLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

ADTN latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Feb 26, 202610-KAnnual report· period Dec 31, 2025Document · Index
Aug 4, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 10, 20268-KDirector or officer change· period Aug 10, 2026Document · Index
Mar 27, 2026DEF 14ADefinitive proxy statement· period Mar 27, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about ADTRAN Holdings, Inc., by form type:

4 ×118-K ×9144 ×310-Q ×2DEFA14A ×2SCHEDULE 13G/A ×24/A ×23 ×1S-3ASR ×111-K ×1SD ×1SCHEDULE 13G ×1ARS ×1DEF 14A ×1PRE 14A ×110-K ×1
ADTN recent filings
FiledFormWhat it isOriginal
Aug 10, 20268-KDirector or officer change· period Aug 10, 2026Document · Index
Aug 10, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 10, 2026Document · Index
Aug 7, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 6, 2026Document · Index
Aug 4, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 4, 20268-KResults of operations; Regulation FD disclosure· period Aug 3, 2026Document · Index
Jul 28, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 24, 2026Document · Index
Jul 23, 20268-KMaterial agreement; Agreement terminated; New financial obligation· period Jul 21, 2026Document · Index
Jul 22, 20268-KResults of operations; Regulation FD disclosure· period Jul 21, 2026Document · Index
Jul 17, 2026S-3ASRSimplified registration statementDocument · Index
Jul 6, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 1, 2026Document · Index
Jul 1, 20263Initial statement of beneficial ownership· period Jul 1, 2026Document · Index
Jun 26, 202611-KAnnual report of employee stock plans· period Dec 31, 2025Document · Index
Jun 26, 20268-KDirector or officer change; Other events· period Jun 23, 2026Document · Index
May 22, 20264Statement of changes in beneficial ownership (insider trade)· period May 20, 2026Document · Index
May 20, 2026144Notice of proposed sale of securitiesDocument · Index
May 18, 20268-KCharter, bylaws or fiscal year change; Shareholder vote results· period May 13, 2026Document · Index
May 12, 2026SDSpecialized disclosure report (conflict minerals)Document · Index
May 11, 20264Statement of changes in beneficial ownership (insider trade)· period May 7, 2026Document · Index
May 7, 2026144Notice of proposed sale of securitiesDocument · Index
May 5, 202610-QQuarterly report· period Mar 31, 2026Document · Index
May 5, 20268-KResults of operations; Regulation FD disclosure· period May 4, 2026Document · Index
May 1, 2026DEFA14AAdditional proxy soliciting materialsDocument · Index
Apr 28, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Apr 7, 20268-KDirector or officer change· period Apr 1, 2026Document · Index
Apr 3, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 1, 2026Document · Index
Apr 3, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 1, 2026Document · Index
Apr 3, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 1, 2026Document · Index
Mar 27, 2026ARSARS· period Dec 31, 2025Document · Index
Mar 27, 2026DEFA14AAdditional proxy soliciting materialsDocument · Index
Mar 27, 2026DEF 14ADefinitive proxy statement· period Mar 27, 2026Document · Index
Mar 26, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Mar 23, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 19, 2026Document · Index
Mar 18, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Mar 13, 2026PRE 14APRE 14A· period Mar 13, 2026Document · Index
Mar 5, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 4, 2026Document · Index
Mar 5, 20264/AStatement of changes in beneficial ownership (insider trade)· period Jan 24, 2025Document · Index
Mar 4, 2026144Notice of proposed sale of securitiesDocument · Index
Feb 26, 202610-KAnnual report· period Dec 31, 2025Document · Index
Feb 26, 20268-KResults of operations; Regulation FD disclosure· period Feb 25, 2026Document · Index
Jan 30, 20264/AStatement of changes in beneficial ownership (insider trade)· period Jan 26, 2026Document · Index

Insider filing activity

28 Form 4 filings appear in ADTRAN Holdings, Inc.’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

Other companies in Telephone & Telegraph Apparatus

All 3 companies in Telephone & Telegraph Apparatus· Companies headquartered in Alabama

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0000926282 and XBRL company facts. ADTRAN Holdings, Inc. on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.