EdgarLookup

ADVANTEST CORP — All Filings

312 total filings on record

Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.

Overview All Filings Financials Insiders
All 15F-12B 20-F 20-F/A 25 424B1 6-K 6-K/A CORRESP D D/A DFAN14A F-1 F-1/A F-6 POS S-8 S-8 POS SC 13G SC 13G/A SD UPLOAD
Form Description Accession Number Filed Period
D/A — 0001158838-25-000004 Aug 28, 2025 —
D/A — 0000891839-24-000006 Sep 3, 2024 —
D/A — 0000891839-23-000002 Jun 6, 2023 —
D — 0000891839-22-000007 Jun 9, 2022 —
15F-12B FORM 15F 0000947871-16-001121 Apr 22, 2016 —
S-8 POS POST-EFFECTIVE AMENDMENT NO. 1 0000947871-16-001120 Apr 22, 2016 —
S-8 POS POST-EFFECTIVE AMENDMENT NO. 1 0000947871-16-001119 Apr 22, 2016 —
S-8 POS POST-EFFECTIVE AMENDMENT NO. 1 0000947871-16-001118 Apr 22, 2016 —
S-8 POS POST-EFFECTIVE AMENDMENT NO. 1 0000947871-16-001117 Apr 22, 2016 —
S-8 POS POST-EFFECTIVE AMENDMENT NO. 1 0000947871-16-001116 Apr 22, 2016 —
S-8 POS POST-EFFECTIVE AMENDMENT NO. 1 0000947871-16-001115 Apr 22, 2016 —
F-6 POS — 0001193805-16-003093 Apr 22, 2016 —
25 FORM 25 0000947871-16-001106 Apr 11, 2016 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-16-001078 Apr 1, 2016 —
SC 13G/A FORM SC 13G/A 0000950103-16-011074 Feb 12, 2016 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-16-000962 Feb 12, 2016 —
SC 13G/A — 0000905148-16-001255 Feb 10, 2016 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-16-000936 Jan 27, 2016 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000880 Dec 22, 2015 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000804 Nov 13, 2015 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000755 Oct 26, 2015 —
UPLOAD — 0000000000-15-044939 Sep 9, 2015 —
CORRESP — 0000947871-15-000630 Sep 8, 2015 —
UPLOAD — 0000000000-15-043628 Aug 31, 2015 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000560 Aug 14, 2015 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000503 Jul 28, 2015 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000447 Jun 25, 2015 —
20-F ANNUAL REPORT 0001193125-15-234186 Jun 25, 2015 Mar 31, 2015
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000422 Jun 1, 2015 —
SD FORM SD 0000947871-15-000420 Jun 1, 2015 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000412 May 27, 2015 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000330 Apr 27, 2015 Apr 27, 2014
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000226 Mar 25, 2015 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000109 Feb 13, 2015 —
SC 13G SC 13G 0000950103-15-001224 Feb 13, 2015 —
SC 13G/A — 0000905148-15-000153 Feb 5, 2015 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-15-000062 Jan 29, 2015 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-14-000705 Nov 14, 2014 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-14-000676 Oct 28, 2014 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-14-000548 Aug 25, 2014 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-14-000525 Aug 14, 2014 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-14-000496 Aug 7, 2014 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-14-000469 Jul 24, 2014 —
S-8 POS POST-EFFECTIVE AMENDMENT NO.1 0000947871-14-000468 Jul 23, 2014 —
S-8 POS POST-EFFECTIVE AMENDMENT NO.1 0000947871-14-000466 Jul 23, 2014 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-14-000412 Jun 26, 2014 —
20-F ANNUAL REPORT 0001193125-14-249940 Jun 26, 2014 Mar 31, 2014
SC 13G — 0000905148-14-000470 Jun 12, 2014 —
6-K REPORT OF FOREIGN PRIVATE ISSUER 0000947871-14-000364 Jun 2, 2014 —
SD FORM SD 0000947871-14-000362 Jun 2, 2014 —