Entity type
Individual
Filer Snapshot
William Bartkowski
CIK 0001647662. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.
Total filings
9
Latest filing
15 Apr 2026
Industry
n/a
Filing-backed research brief
Start with the SEC data that changes for this CIK
Latest signal: Forms 3/4/5 owner position for CQENS Technologies Inc.. Each card links back to the PortfolioSavvy page where the filing evidence is closest.
Latest 13F portfolio
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Browse latest 13FLargest parsed holding
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Populates from the latest parsed 13F information table.
Open holding13D/G large stake
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No recent parsed 13D/G stake row for this CIK.
Browse 13D/GInsider / owner context
CQENS Technologies Inc.
31 Dec 2025
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Source: SEC Forms 3/4/5
View source filing
5 filed on 15 Apr 2026 for CIK 0001647662.
- Business address
- 5550 Nicollet Avenue, Minneapolis, MN, 55419
Filer intelligence
What SEC filings say about William Bartkowski
A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.
Quick read
- Forms 3/4/5 show insider context for CQENS Technologies Inc..
SEC source mix
Counts show available parsed rows, not one combined ownership total.
Forms 3/4/5 insider context
CQENS Technologies Inc.
31 Dec 2025 ยท Chief Administrative Officer
Latest update
What changed recently for William Bartkowski
Latest ownership report period: 31 Dec 2025. Open the source-backed page to inspect the fresh filing or facts context.
Update date
15 Apr 2026
Page type
Ownership filings
Latest period
31 Dec 2025
Ownership context was refreshed from SEC Forms 3/4/5 filed on 15 Apr 2026.
SEC filing record
CIK 0001647662 filing coverage
Start with this filing record, then use the linked ownership pages when parsed 13F, 13D/G, Forms 3/4/5, or facts data exists for this CIK.
SEC filings
9
First seen
22 Jul 2015
Latest filing
15 Apr 2026
Entity
Individual
Observed form types
5
4
3
CIK-linked evidence first
Latest Filings
Showing the latest 9 of 9 SEC filings for William Bartkowski.
5
File 000-55470
5
- Filing date
- 15 Apr 2026
- Reporting date
- 31 Dec 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
File 000-55470
4 filing
- Filing date
- 25 Oct 2022
- Reporting date
- 21 Oct 2022
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
File 000-55470
4 filing
- Filing date
- 17 Nov 2021
- Reporting date
- 21 Oct 2021
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
File 000-55470
4 filing
- Filing date
- 02 Oct 2020
- Reporting date
- 01 Oct 2020
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
File 000-55470
4 filing
- Filing date
- 02 Jan 2020
- Reporting date
- 31 Dec 2019
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
File 000-55470
4 filing
- Filing date
- 21 Dec 2018
- Reporting date
- 19 Dec 2018
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
File 000-55470
4 filing
- Filing date
- 03 Jan 2017
- Reporting date
- 30 Dec 2016
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
File 000-55470
OWNERSHIP DOCUMENT
- Filing date
- 04 Jan 2016
- Reporting date
- 31 Dec 2015
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
3
File 000-55470
OWNERSHIP DOCUMENT
- Filing date
- 22 Jul 2015
- Reporting date
- 13 Jul 2015
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing