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.

Filer Snapshot

William C. Boor SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001401223.

Entity Type

Individual

Total Filings

Latest Filing

14 Apr 2026

Industry

n/a

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Go to latest filings table Open reporting owner context

Source: SEC Forms 3/4/5

4 filed on 14 Apr 2026 for CIK 0001401223.

View Source Filing

Business address: Cleveland Cliffs Inc, 1100 Superior Avenue 15 Th Floor, Cleveland, OH, 44114
Top holdings (ownership): CVCO and LZB

Quick Takeaways

William C. Boor is an SEC filer tracked under CIK 0001401223.
73 filings are listed on this profile.
Common form coverage includes 4, 3, 4/A and more.

What Changed

Latest filing: 4 filed on 14 Apr 2026.
Report period: 10 Apr 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.

Source Evidence

Source: SEC Forms 3/4/5

4 filed on 14 Apr 2026 for CIK 0001401223.

View Source Filing

Return Loop

Why revisit this filer page

A newly filed 4 can change the filing history, ownership context, or next research path for William C. Boor.

Latest source-backed update: 4 filed 14 Apr 2026
Why come back: Revisit after a new SEC filing appears to compare the updated record with prior filings.

Latest filing on record: 4 filed 14 Apr 2026.
Save this filer if you want a stable place to return after the next filing cycle.
Open the latest filing table or ownership context to verify what changed.

Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.

Jump to save and follow actions Open latest filings table

Latest update

What changed recently for William C. Boor

Ownership report updated

Latest ownership report period: 10 Apr 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

14 Apr 2026

Page type

Ownership filings

Latest period

10 Apr 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 14 Apr 2026.

Open ownership filings Browse recent public updates

Filer Overview

William C. Boor has filed 73 SEC EDGAR filings since 30 May 2007. Common forms include 4, 3, 4/A, 5.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for William C. Boor with direct links to document and filing folders.

4 File 000-08822

FORM 4

Filing date: 14 Apr 2026
Reporting date: 10 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 05 Feb 2026
Reporting date: 04 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-09656

FORM 4

Filing date: 16 Jan 2026
Reporting date: 15 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-09656

FORM 3

Filing date: 10 Dec 2025
Reporting date: 08 Dec 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 01 Aug 2025
Reporting date: 30 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A File 000-08822

FORM 4/A

Filing date: 13 Jun 2025
Reporting date: 19 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 27 May 2025
Reporting date: 22 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 21 May 2025
Reporting date: 19 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 16 May 2025
Reporting date: 15 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 06 Nov 2024
Reporting date: 04 Nov 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 01 Aug 2024
Reporting date: 30 Jul 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 01 Jul 2024
Reporting date: 28 Jun 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 28 May 2024
Reporting date: 24 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 23 May 2024
Reporting date: 21 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 17 May 2024
Reporting date: 15 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 16 Nov 2023
Reporting date: 15 Nov 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 29 Jun 2023
Reporting date: 28 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 26 May 2023
Reporting date: 24 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 17 May 2023
Reporting date: 15 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 15 Nov 2022
Reporting date: 11 Nov 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 29 Jun 2022
Reporting date: 28 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A File 000-08822

FORM 4/A

Filing date: 16 Jun 2022
Reporting date: 25 May 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 03 Jun 2022
Reporting date: 01 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 26 May 2022
Reporting date: 24 May 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 22 Nov 2021
Reporting date: 19 Nov 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 29 Jun 2021
Reporting date: 28 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 26 May 2021
Reporting date: 24 May 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 15 Mar 2021
Reporting date: 11 Mar 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 27 May 2020
Reporting date: 20 May 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 25 Jun 2019
Reporting date: 21 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 10 May 2019
Reporting date: 15 Apr 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 15 Nov 2018
Reporting date: 12 Sep 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 24 Aug 2018
Reporting date: 22 Aug 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 09 Jul 2018
Reporting date: 09 Jul 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 15 Dec 2017
Reporting date: 15 Dec 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 10 Jul 2017
Reporting date: 09 Jul 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 26 Jun 2017
Reporting date: 22 Jun 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 11 Jul 2016
Reporting date: 09 Jul 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 06 May 2016
Reporting date: 04 May 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 13 Jul 2015
Reporting date: 09 Jul 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 09 Jun 2015
Reporting date: 08 Jun 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 05 Jun 2015
Reporting date: 03 Jun 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

4 filing

Filing date: 13 Aug 2014
Reporting date: 06 Aug 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

4 filing

Filing date: 31 Jul 2014
Reporting date: 29 Jul 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

FORM 4

Filing date: 09 Jul 2014
Reporting date: 09 Jul 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

4 filing

Filing date: 12 Feb 2014
Reporting date: 10 Feb 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

5 File 001-08944

5 filing

Filing date: 07 Feb 2014
Reporting date: 31 Dec 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

MAIN DOCUMENT DESCRIPTION

Filing date: 09 Jul 2013
Reporting date: 09 Jul 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

4 filing

Filing date: 13 Mar 2013
Reporting date: 11 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

4 filing

Filing date: 25 Feb 2013
Reporting date: 21 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

MAIN DOCUMENT DESCRIPTION

Filing date: 09 Jul 2012
Reporting date: 09 Jul 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

FORM 4 SUBMISSION

Filing date: 14 Mar 2012
Reporting date: 12 Mar 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

FORM 4 SUBMISSION

Filing date: 14 Feb 2012
Reporting date: 13 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

MAIN DOCUMENT DESCRIPTION

Filing date: 11 Jul 2011
Reporting date: 09 Jul 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

FORM 4 SUBMISSION

Filing date: 16 Jun 2011
Reporting date: 15 Jun 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

FORM 4 SUBMISSION

Filing date: 10 Mar 2011
Reporting date: 08 Mar 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

FORM 4 SUBMISSION

Filing date: 23 Feb 2011
Reporting date: 23 Feb 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-08822

MAIN DOCUMENT DESCRIPTION

Filing date: 12 Jul 2010
Reporting date: 09 Jul 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

FORM 4 SUBMISSION

Filing date: 25 May 2010
Reporting date: 21 May 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

FORM 4 SUBMISSION

Filing date: 16 Mar 2010
Reporting date: 15 Mar 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

FORM 4 SUBMISSION

Filing date: 10 Mar 2010
Reporting date: 08 Mar 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08944

FORM 4 SUBMISSION

Filing date: 04 Mar 2010
Reporting date: 02 Mar 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

5 File 001-08944

FORM 5 SUBMISSION

Filing date: 07 Jan 2010
Reporting date: 31 Dec 2009
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

William C. Boor files with the SEC under CIK 0001401223. 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.

William C. Boor SEC EDGAR Filings

Save this filer page for the next filing cycle

Quick Takeaways

What Changed

Why This Matters

Source Evidence

Why revisit this filer page

What changed recently for William C. Boor

Filer Overview

Latest Filings

FORM 4

FORM 4

FORM 4

FORM 3

FORM 4

FORM 4/A

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4/A

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

4 filing

4 filing

FORM 4

4 filing

5 filing

MAIN DOCUMENT DESCRIPTION

4 filing

4 filing

MAIN DOCUMENT DESCRIPTION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

MAIN DOCUMENT DESCRIPTION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

MAIN DOCUMENT DESCRIPTION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 5 SUBMISSION

About this filer

FAQ

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