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

Thomas Sonderman

CIK 0001611597. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity Type

Individual

Total Filings

Latest Filing

18 Mar 2026

Industry

n/a

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Open 13F if you want portfolio holdings.
Open 13D/G or insider pages only when this CIK has those rows.

Open reporting owner context

Source: SEC Forms 3/4/5

4 filed on 18 Mar 2026 for CIK 0001611597.

View Source Filing

Business address: 16 Jonspin Road, Wilmington, MA, 01887
Top holdings (ownership): SKYT

Filer intelligence

What SEC filings say about Thomas Sonderman

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

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Quick read

Forms 3/4/5 show insider context for SKYT worth $17.06M.

SEC source mix

Counts show available parsed rows, not one combined ownership total.

XML parsed

13F portfolio No rows yet

Quarterly institutional portfolio holdings.

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13D/G stakes No rows yet

Beneficial ownership and large-stake disclosures.

Open

Forms 3/4/5 1 rows

Officer, director, and 10% owner holdings or transactions.

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Forms 3/4/5 insider context

SKYT

16 Mar 2026 · CEO

$17.06M

Issuer page Owner page

Latest update

What changed recently for Thomas Sonderman

Ownership report updated

Latest ownership report period: 16 Mar 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

18 Mar 2026

Page type

Ownership filings

Latest period

16 Mar 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 18 Mar 2026.

Open ownership filings Browse recent public updates

Filer Overview

Thomas Sonderman has filed 54 SEC EDGAR filings since 10 Jul 2014. Common forms include 4, 144, 3.

Thomas Sonderman SEC filings Thomas Sonderman owner filings

Latest Filings

Recent SEC filings for Thomas Sonderman with direct links to document and filing folders.

4 File 001-40345

FORM 4

Filing date: 18 Mar 2026
Reporting date: 16 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 17 Mar 2026
Reporting date: 15 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 19 Feb 2026
Reporting date: 17 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 25 Nov 2025
Reporting date: 21 Nov 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 21 Nov 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

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

144

144 filing

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

4 File 001-40345

FORM 4

Filing date: 11 Sep 2025
Reporting date: 10 Sep 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 10 Sep 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 14 Aug 2025
Reporting date: 13 Aug 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 13 Aug 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 27 Jun 2025
Reporting date: 26 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 26 Jun 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 19 Mar 2025
Reporting date: 17 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 27 Feb 2025
Reporting date: 25 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 20 Feb 2025
Reporting date: 15 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 24 Apr 2024
Reporting date: 22 Apr 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 18 Mar 2024
Reporting date: 15 Mar 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

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

4 File 001-40345

FORM 4

Filing date: 28 Feb 2024
Reporting date: 27 Feb 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 12 Feb 2024
Reporting date: 09 Feb 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 26 Jan 2024
Reporting date: 24 Jan 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

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

144

144 filing

Filing date: 28 Dec 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 15 May 2023
Reporting date: 11 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 09 May 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 22 Mar 2023
Reporting date: 15 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 20 Mar 2023
Reporting date: 17 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

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

4 File 001-40345

FORM 4

Filing date: 08 Mar 2023
Reporting date: 06 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 03 Mar 2023
Reporting date: 01 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 17 Feb 2023
Reporting date: 16 Feb 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 19 Dec 2022
Reporting date: 15 Dec 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 14 Dec 2022
Reporting date: 12 Dec 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 14 Sep 2022
Reporting date: 12 Sep 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 11 May 2022
Reporting date: 09 May 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4

Filing date: 01 Mar 2022
Reporting date: 25 Feb 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40345

FORM 4 SUBMISSION

Filing date: 22 Apr 2021
Reporting date: 20 Apr 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-40345

PRIMARY DOCUMENT

Filing date: 20 Apr 2021
Reporting date: 20 Apr 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 10 Oct 2017
Reporting date: 06 Oct 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 12 Jul 2017
Reporting date: 08 Jul 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 21 Feb 2017
Reporting date: 16 Feb 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

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

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 31 Jan 2017
Reporting date: 27 Jan 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 17 Nov 2016
Reporting date: 15 Nov 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 09 Aug 2016
Reporting date: 08 Aug 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 12 Jul 2016
Reporting date: 08 Jul 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 24 Feb 2016
Reporting date: 19 Feb 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 29 Jan 2016
Reporting date: 27 Jan 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 10 Aug 2015
Reporting date: 08 Jul 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 30 Jan 2015
Reporting date: 28 Jan 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 07 Nov 2014
Reporting date: 06 Nov 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36226

PRIMARY DOCUMENT

Filing date: 10 Jul 2014
Reporting date: 08 Jul 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-36226

PRIMARY DOCUMENT

Filing date: 10 Jul 2014
Reporting date: 08 Jul 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

Thomas Sonderman files with the SEC under CIK 0001611597. 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.

Thomas Sonderman

Follow future filing-backed changes

What SEC filings say about Thomas Sonderman

Quick read

SEC source mix

Forms 3/4/5 insider context

What changed recently for Thomas Sonderman

Filer Overview

Latest Filings

FORM 4

FORM 4

FORM 4

FORM 4

144 filing

FORM 4

144 filing

FORM 4

144 filing

FORM 4

144 filing

FORM 4

144 filing

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

144 filing

FORM 4

144 filing

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4 SUBMISSION

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About this filer

FAQ

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