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 Masters Ross SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001688445.

Entity Type

Individual

Total Filings

Latest Filing

10 Feb 2026

Industry

n/a

Save this filer page for the next filing cycle

Keep this page in your research queue, then return to compare new filings with prior context.

Save and revisit

Save this filer page

Create a free account to keep this page in your watchlists. After verification, we will save it automatically and open your saved research list.

Create free account and save this filer Already have an account? Sign in and save it

Best next steps

Start with the latest filings table, then open the strongest context page for this filer.

Use the filings table to verify the newest submission, form type, and report period.
Open the deeper context page only when this filer actually has insider or ownership signal.

Go to latest filings table Open reporting owner context

Source: SEC Forms 3/4/5

4 filed on 10 Feb 2026 for CIK 0001688445.

View Source Filing

Business address: C/O Unifirst Corporation, 68 Jonspin Road, Wilmington, MA, 01887
Top holdings (ownership): UNF

Quick Takeaways

William Masters Ross is an SEC filer tracked under CIK 0001688445.
50 filings are listed on this profile.
Common form coverage includes 4, 144, 4/A and more.

What Changed

Latest filing: 4 filed on 10 Feb 2026.
Report period: 09 Feb 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 10 Feb 2026 for CIK 0001688445.

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 Masters Ross.

Latest source-backed update: 4 filed 10 Feb 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 10 Feb 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 Masters Ross

Ownership report updated

Latest ownership report period: 09 Feb 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

10 Feb 2026

Page type

Ownership filings

Latest period

09 Feb 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 10 Feb 2026.

Open ownership filings Browse recent public updates

Filer Overview

William Masters Ross has filed 50 SEC EDGAR filings since 26 Oct 2016. Common forms include 4, 144, 4/A, 3.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for William Masters Ross with direct links to document and filing folders.

4 File 001-08504

4

Filing date: 10 Feb 2026
Reporting date: 09 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 09 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

4

Filing date: 18 Dec 2025
Reporting date: 16 Dec 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

4

Filing date: 04 Nov 2025
Reporting date: 31 Oct 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

4

Filing date: 18 Feb 2025
Reporting date: 14 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 14 Feb 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

4

Filing date: 22 Nov 2024
Reporting date: 19 Nov 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

4

Filing date: 04 Nov 2024
Reporting date: 31 Oct 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

4

Filing date: 19 Jul 2024
Reporting date: 17 Jul 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 17 Jul 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 14 Feb 2024
Reporting date: 12 Feb 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 12 Feb 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 02 Nov 2023
Reporting date: 31 Oct 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

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

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 09 Jan 2023
Reporting date: 05 Jan 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 22 Dec 2022
Reporting date: 20 Dec 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 30 Nov 2022
Reporting date: 28 Nov 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 02 Nov 2022
Reporting date: 31 Oct 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 02 Feb 2022
Reporting date: 31 Jan 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 19 Nov 2021
Reporting date: 17 Nov 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 28 Sep 2021
Reporting date: 27 Sep 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 23 Aug 2021
Reporting date: 19 Aug 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 23 Feb 2021
Reporting date: 22 Feb 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 25 Jan 2021
Reporting date: 21 Jan 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 22 Dec 2020
Reporting date: 21 Dec 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 29 Oct 2020
Reporting date: 26 Oct 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 18 Aug 2020
Reporting date: 17 Aug 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 12 Aug 2020
Reporting date: 10 Aug 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 04 Feb 2020
Reporting date: 03 Feb 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 10 Jan 2020
Reporting date: 08 Jan 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 06 Jan 2020
Reporting date: 02 Jan 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A File 001-08504

FORM 4/A SUBMISSION

Filing date: 04 Dec 2019
Reporting date: 29 Oct 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 30 Oct 2019
Reporting date: 29 Oct 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 10 Jun 2019
Reporting date: 10 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 07 Jun 2019
Reporting date: 05 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 07 May 2019
Reporting date: 07 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4 SUBMISSION

Filing date: 06 May 2019
Reporting date: 02 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 01 May 2019
Reporting date: 01 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 10 Apr 2019
Reporting date: 08 Apr 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 23 Oct 2018
Reporting date: 22 Oct 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 07 Mar 2018
Reporting date: 05 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 07 Feb 2018
Reporting date: 05 Feb 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 08 Jan 2018
Reporting date: 05 Jan 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 21 Dec 2017
Reporting date: 20 Dec 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 24 Oct 2017
Reporting date: 23 Oct 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 08 Mar 2017
Reporting date: 06 Mar 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 08 Feb 2017
Reporting date: 06 Feb 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 06 Jan 2017
Reporting date: 05 Jan 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08504

FORM 4

Filing date: 26 Oct 2016
Reporting date: 24 Oct 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-08504

FORM 3

Filing date: 26 Oct 2016
Reporting date: 24 Oct 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

William Masters Ross files with the SEC under CIK 0001688445. 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 Masters Ross 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 Masters Ross

Filer Overview

Latest Filings

4

144 filing

4

4

4

144 filing

4

4

4

144 filing

FORM 4 SUBMISSION

144 filing

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4/A SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

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 3

About this filer

FAQ

Related pages