Advantest Corp SEC filings ADTTF

Advantest Corp has 315 filings in SEC EDGAR's recent list, going back to Mar 1, 2002. Its latest annual report, Form 20-F, was filed on Jun 25, 2015 for the period ended Mar 31, 2015. The most recent current report (Form 6-K) was filed on Apr 1, 2016. The company's fiscal year ends on December 31.

Form Description Filed Period
SCHEDULE 13G/A Amended ownership over 5% (passive) May 27, 2026 —
SC 13G Ownership over 5% (passive) Aug 6, 2020 —
SC 13G/A Amended ownership over 5% (passive) Feb 12, 2016 —
SC 13G/A Amended ownership over 5% (passive) Feb 10, 2016 —
SC 13G/A Amended ownership over 5% (passive) Feb 4, 2016 —
SC 13G Ownership over 5% (passive) Feb 13, 2015 —
SC 13G/A Amended ownership over 5% (passive) Feb 12, 2015 —
SC 13G/A Amended ownership over 5% (passive) Feb 5, 2015 —
SC 13G Ownership over 5% (passive) Jun 12, 2014 —
SC 13G/A Amended ownership over 5% (passive) Feb 12, 2014 —
SC 13G/A Amended ownership over 5% (passive) Feb 1, 2013 —
SC 13G/A Amended ownership over 5% (passive) Feb 10, 2012 —
SC 13G/A Amended ownership over 5% (passive) Feb 8, 2011 —
SC 13G/A Amended ownership over 5% (passive) Feb 10, 2010 —
SC 13G Ownership over 5% (passive) Feb 6, 2009 —

Showing 15 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

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Company profile

Industry
Semiconductors & Related Devices (SIC 3674)
Listed as
ATEYY (OTC), ADTTF (OTC)
Fiscal year ends
December 31
Incorporated in
Japan
Headquarters
Chiyoda-Ku, Tokyo 100-0005, Japan
SEC filer status
Large accelerated filer
SEC CIK
1158838

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.