Stephen Williamson reports

Company location: Waltham, MA

Stephen Williamson has filed 104 SEC EDGAR filings since 04 Aug 2015

SEC filing history

Showing 1-25 of 104 matching filings.

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25

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1

4 File 001-08974

FORM 4

Filing date: 26 May 2026
Reporting date: 22 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08974

FORM 4

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

144

144 filing

Filing date: 03 Mar 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08002

PRIMARY DOCUMENT

Filing date: 02 Mar 2026
Reporting date: 28 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08002

PRIMARY DOCUMENT

Filing date: 27 Feb 2026
Reporting date: 25 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08974

FORM 4

Filing date: 06 Jan 2026
Reporting date: 02 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08002

PRIMARY DOCUMENT

Filing date: 17 Nov 2025
Reporting date: 14 Nov 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08974

FORM 4

Filing date: 02 Oct 2025
Reporting date: 01 Oct 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08002

PRIMARY DOCUMENT

Filing date: 02 Sep 2025
Reporting date: 28 Aug 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08974

FORM 4

Filing date: 02 Jul 2025
Reporting date: 01 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08974

FORM 4

Filing date: 21 May 2025
Reporting date: 20 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08974

FORM 4

Filing date: 17 Apr 2025
Reporting date: 15 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-08974

FORM 3

Filing date: 03 Apr 2025
Reporting date: 01 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08002

PRIMARY DOCUMENT

Filing date: 04 Mar 2025
Reporting date: 28 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08002

PRIMARY DOCUMENT

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

4 File 001-08002

PRIMARY DOCUMENT

Filing date: 05 Feb 2025
Reporting date: 03 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144/A

144/A filing

Filing date: 05 Feb 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

144/A

144/A filing

Filing date: 05 Feb 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 04 Feb 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 03 Feb 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08002

PRIMARY DOCUMENT

Filing date: 29 Aug 2024
Reporting date: 28 Aug 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08002

PRIMARY DOCUMENT

Filing date: 27 Aug 2024
Reporting date: 23 Aug 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08002

PRIMARY DOCUMENT

Filing date: 29 May 2024
Reporting date: 28 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-08002

PRIMARY DOCUMENT

Filing date: 15 May 2024
Reporting date: 13 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 13 May 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

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