Dr. Nancy T. Chang SEC EDGAR Filings (CIK 0001135041)

SEC EDGAR filings, ownership reports, and insider transactions for Dr. Nancy T. Chang.

Business address
101 Westcott, Suite 603, Houston, TX, 77007
Top holdings (ownership)
IMMX, GRTX, and WTI
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Dr. Nancy T. Chang has filed 66 SEC EDGAR filings since 14 Feb 2001

Latest Filings

Recent SEC filings for Dr. Nancy T. Chang including 4, 3, SC 13G and more.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 4 11 Dec 2025 21 Nov 2025 001-41159
3 Open 3 document View SEC filing for 3 17 Sep 2025 08 Sep 2025 001-41159
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 05 Jun 2025 03 Jun 2025 001-32414
4 Open 4 document View SEC filing for 4 26 Feb 2025 24 Feb 2025 001-39114
4 Open 4 document View SEC filing for 4 02 Jan 2025 30 Dec 2024 001-39114
3 Open 3 document View SEC filing for 3 02 Jan 2025 30 Dec 2024 001-39114
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 18 Jun 2024 14 Jun 2024 001-32414
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 06 Jul 2023 03 Jul 2023 001-32414
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 02 May 2023 28 Apr 2023 001-32414
3 Open 3 document View SEC filing for 3 19 Oct 2020 19 Oct 2020 001-39630
SC 13G Open SC 13G document View SEC filing for SC 13G SCHEDULE 13G 01 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 16 Oct 2017 13 Oct 2017 000-19825
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jun 2017 08 Jun 2017 000-19825
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Sep 2016 29 Sep 2016 000-19825
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 Aug 2016 26 Aug 2016 000-19825
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Jun 2016 09 Jun 2016 000-19825
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Jun 2015 11 Jun 2015 000-19825
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Feb 2015 12 Feb 2015 000-19825
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A FORM SC 13G/A 05 Feb 2015
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 Aug 2014 15 Aug 2014 000-19825
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 16 Jun 2014 12 Jun 2014 000-19825
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 13 Feb 2014
4 Open 4 document View SEC filing for 4 FORM 4 19 Sep 2013 17 Sep 2013 000-19825
3 Open 3 document View SEC filing for 3 FORM 3 19 Sep 2013 17 Sep 2013 000-19825
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 11 May 2010 07 May 2010 001-15943
3 Open 3 document View SEC filing for 3 3 10 May 2010 30 Apr 2010 000-53621

About this filer

Dr. Nancy T. Chang files with the SEC under CIK 0001135041. This page aggregates EDGAR filings and related ownership activity.

See reporting owner transactions.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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