ATEYY · OTC, OTC · CIK 0001158838

ADVANTEST CORP

ADVANTEST CORP’s most recent SEC filing in our snapshot is a Form EFFECT filed on Aug 11, 2026. Its EDGAR record lists 0 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
—
Net income
—
Form 4 filings on record, past 12 months
0

Company overview

Legal name (as filed)
ADVANTEST CORP
Tickers
ATEYY, ADTTF
SEC Central Index Key (CIK)
0001158838
Industry (SIC)
Semiconductors & Related Devices (code 3674)
Business address
CHIYODA-KU, TOKYO 100-0005, Japan
State or country of incorporation
Japan
Fiscal year ends
December 31
SEC filer category
Large accelerated filer
Position in SEC ticker list
#106 of the 3,000 companies we track

Five-year financial highlights

We could not find standardized annual figures for ADVANTEST CORP in the SEC’s XBRL company facts. Read the latest annual report directly on EDGAR.

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.

ATEYY latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Jun 25, 201520-FANNUAL REPORT· period Mar 31, 2015Document · Index
Apr 1, 20166-KREPORT OF FOREIGN PRIVATE ISSUER· period Apr 1, 2016Document · Index

Recent SEC filings

The 40 newest documents filed by or about ADVANTEST CORP, by form type:

6-K ×14S-8 POS ×6D/A ×3SC 13G/A ×3SC 13G ×2UPLOAD ×225 ×1EFFECT ×1F-6 ×1SCHEDULE 13G/A ×1D ×1F-6 POS ×115F-12B ×1CORRESP ×120-F ×1SD ×1
ATEYY recent filings
FiledFormWhat it isOriginal
Aug 11, 2026EFFECTEFFECTDocument · Index
Aug 6, 2026F-6F-6Document · Index
May 27, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Aug 28, 2025D/AD/ADocument · Index
Sep 3, 2024D/AD/ADocument · Index
Jun 6, 2023D/AD/ADocument · Index
Jun 9, 2022DDDocument · Index
Aug 6, 2020SC 13GPassive beneficial ownership report (over 5%)Document · Index
Apr 22, 2016F-6 POSF-6 POSDocument · Index
Apr 22, 201615F-12BFORM 15FDocument · Index
Apr 22, 2016S-8 POSPOST-EFFECTIVE AMENDMENT NO. 1Document · Index
Apr 22, 2016S-8 POSPOST-EFFECTIVE AMENDMENT NO. 1Document · Index
Apr 22, 2016S-8 POSPOST-EFFECTIVE AMENDMENT NO. 1Document · Index
Apr 22, 2016S-8 POSPOST-EFFECTIVE AMENDMENT NO. 1Document · Index
Apr 22, 2016S-8 POSPOST-EFFECTIVE AMENDMENT NO. 1Document · Index
Apr 22, 2016S-8 POSPOST-EFFECTIVE AMENDMENT NO. 1Document · Index
Apr 11, 20162525Document · Index
Apr 1, 20166-KREPORT OF FOREIGN PRIVATE ISSUER· period Apr 1, 2016Document · Index
Feb 12, 2016SC 13G/APassive beneficial ownership report (over 5%)Document · Index
Feb 12, 20166-KREPORT OF FOREIGN PRIVATE ISSUER· period Feb 12, 2016Document · Index
Feb 10, 2016SC 13G/APassive beneficial ownership report (over 5%)Document · Index
Feb 4, 2016SC 13G/ASCHEDULE 13G AMENDMENT NO. 7Document · Index
Jan 27, 20166-KREPORT OF FOREIGN PRIVATE ISSUER· period Jan 27, 2016Document · Index
Dec 22, 20156-KREPORT OF FOREIGN PRIVATE ISSUER· period Dec 22, 2015Document · Index
Nov 13, 20156-KREPORT OF FOREIGN PRIVATE ISSUER· period Nov 13, 2015Document · Index
Oct 26, 20156-KREPORT OF FOREIGN PRIVATE ISSUER· period Oct 26, 2015Document · Index
Sep 9, 2015UPLOADUPLOADDocument · Index
Sep 8, 2015CORRESPCORRESPDocument · Index
Aug 31, 2015UPLOADUPLOADDocument · Index
Aug 14, 20156-KREPORT OF FOREIGN PRIVATE ISSUER· period Aug 14, 2015Document · Index
Jul 28, 20156-KREPORT OF FOREIGN PRIVATE ISSUER· period Jul 28, 2015Document · Index
Jun 25, 201520-FANNUAL REPORT· period Mar 31, 2015Document · Index
Jun 25, 20156-KREPORT OF FOREIGN PRIVATE ISSUER· period Jun 25, 2015Document · Index
Jun 1, 20156-KREPORT OF FOREIGN PRIVATE ISSUER· period Jun 1, 2015Document · Index
Jun 1, 2015SDSpecialized disclosure report (conflict minerals)Document · Index
May 27, 20156-KREPORT OF FOREIGN PRIVATE ISSUER· period May 27, 2015Document · Index
Apr 27, 20156-KREPORT OF FOREIGN PRIVATE ISSUER· period Apr 27, 2014Document · Index
Mar 25, 20156-KREPORT OF FOREIGN PRIVATE ISSUER· period Mar 25, 2015Document · Index
Feb 13, 2015SC 13GPassive beneficial ownership report (over 5%)Document · Index
Feb 13, 20156-KREPORT OF FOREIGN PRIVATE ISSUER· period Feb 13, 2015Document · Index

Insider filing activity

0 Form 4 filings appear in ADVANTEST CORP’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.

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0001158838 and XBRL company facts. ADVANTEST CORP 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.