Filer Snapshot

Robert C. Knapp SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001223003.

Entity Type

Individual

Total Filings

60

Latest Filing

18 Mar 2026

Industry

n/a

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Official SEC Source

Validate every takeaway against the original EDGAR filing.

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Business address
C/O Ironsides Partners Llc, 100 Summer Street, Suite 2705, Boston, MA, 02110
Top holdings (ownership)
ECO

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Quick Takeaways

  • Robert C. Knapp is an SEC filer tracked under CIK 0001223003.
  • 60 filings are listed on this profile.
  • Common form coverage includes 3, 4, SC 13D/A and more.

What Changed

  • Latest filing: 3 filed on 18 Mar 2026.
  • Report period: 18 Mar 2026.

Why This Matters

  • You can quote filing dates and form types directly from the SEC record on this page.
  • Use this profile before deeper ownership or insider analysis to confirm filing history context.

Official SEC Source

Official SEC Source

SEC EDGAR submissions for CIK 0001223003.

See Original Filing

Filer Overview

Robert C. Knapp has filed 60 SEC EDGAR filings since 17 Mar 2003. Common forms include 3, 4, SC 13D/A, 13F-NT and more.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Robert C. Knapp with direct links to document and filing folders.

Form type Document Filing Description Filing date Reporting date File number(s)
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 18 Mar 2026 18 Mar 2026 001-41858
4 Open 4 document View SEC filing for 4 FORM 4 23 Dec 2020 23 Dec 2020 000-28405
3 Open 3 document View SEC filing for 3 23 Dec 2020 23 Dec 2020 814-00733
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SCHEDULE 13D/A (AMENDMENT NO. 5) 02 Jan 2020
4 Open 4 document View SEC filing for 4 FORM 4 26 Dec 2019 23 Dec 2019 001-35064
4 Open 4 document View SEC filing for 4 22 Aug 2019 20 Aug 2019 001-35064
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A FORM SCHEDULE 13D/A 08 Feb 2019
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SCHEDULE 13D/A (AMENDMENT NO. 3) 02 Jan 2019
13F-NT Open 13F-NT document View SEC filing for 13F-NT 14 Nov 2018 30 Sep 2018 028-17842
13F-NT Open 13F-NT document View SEC filing for 13F-NT 14 Aug 2018 30 Jun 2018 028-17842
13F-NT Open 13F-NT document View SEC filing for 13F-NT 15 May 2018 31 Mar 2018 028-17842
13F-NT Open 13F-NT document View SEC filing for 13F-NT 14 Feb 2018 31 Dec 2017 028-17842
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SCHEDULE 13 D/A 02 Jan 2018
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 02 Jan 2018 28 Dec 2017 001-35064
13F-NT Open 13F-NT document View SEC filing for 13F-NT 14 Nov 2017 30 Sep 2017 028-17842
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 15 Sep 2017 05 Sep 2017 001-35064
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 29 Aug 2017 25 Aug 2017 001-35064
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SCHEDULE 13 D/A (AMENDMENT NO. 1) 24 Aug 2017
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 21 Aug 2017 17 Aug 2017 001-35064
13F-NT Open 13F-NT document View SEC filing for 13F-NT 14 Aug 2017 30 Jun 2017 028-17842
SC 13D Open SC 13D document | Open XBRL data View SEC filing for SC 13D FORM SCHEDULE 13D 04 Aug 2017
SC 13G Open SC 13G document | Open XBRL data View SEC filing for SC 13G FORM SCHEDULE 13G 04 Aug 2017
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 01 Aug 2017 28 Jul 2017 001-35064
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 01 Aug 2017 28 Jul 2017 001-35064
13F-NT Open 13F-NT document View SEC filing for 13F-NT 15 May 2017 31 Mar 2017 028-17842
13F-NT Open 13F-NT document View SEC filing for 13F-NT 14 Feb 2017 31 Dec 2016 028-17842
4 Open 4 document View SEC filing for 4 FORM 4 14 Oct 2016 12 Oct 2016 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 10 Oct 2014 08 Oct 2014 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 27 Jun 2014 19 Jun 2014 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 12 Jun 2014 10 Jun 2014 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 02 Apr 2014 31 Mar 2014 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 24 Mar 2014 20 Mar 2014 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 18 Mar 2014 14 Mar 2014 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 27 Jan 2014 24 Jan 2014 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 24 Jan 2014 22 Jan 2014 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 22 Jan 2014 17 Jan 2014 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 17 Jan 2014 15 Jan 2014 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 18 Mar 2013 14 Mar 2013 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 04 Jan 2013 03 Jan 2013 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 03 Jan 2013 31 Dec 2012 814-00201
4 Open 4 document View SEC filing for 4 FORM 4 11 Apr 2012 09 Apr 2012 814-00201

About this filer

Robert C. Knapp files with the SEC under CIK 0001223003. This page aggregates EDGAR filings and related ownership activity.

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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