Filer Snapshot

Robert J. Zulkoski

CIK 0002017494. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Individual

Total filings

3

Latest filing

20 May 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 ETSS. Each card links back to the PortfolioSavvy page where the filing evidence is closest.

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Largest parsed holding

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Populates from the latest parsed 13F information table.

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13D/G large stake

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No recent parsed 13D/G stake row for this CIK.

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Source: SEC Forms 3/4/5

4 filed on 20 May 2026 for CIK 0002017494.

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Business address
110 East 40 Th Street, Suite 803, New York, NY, 10016

Filer intelligence

What SEC filings say about Robert J. Zulkoski

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 ETSS.

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.

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Forms 3/4/5 2 rows

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

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Forms 3/4/5 insider context

ETSS

18 May 2026 · Chief Executive Officer · 10% owner

Issuer page Owner page

ISUN

11 Mar 2024 · CHIEF EXECUTIVE OFFICER

Issuer page Owner page

Latest update

What changed recently for Robert J. Zulkoski

Ownership report updated

Latest ownership report period: 11 Mar 2024. Open the source-backed page to inspect the fresh filing or facts context.

Update date

29 Mar 2024

Page type

Ownership filings

Latest period

11 Mar 2024

Ownership context was refreshed from SEC Forms 3/4/5 filed on 29 Mar 2024.

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SEC filing record

CIK 0002017494 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
3
First seen
29 Mar 2024
Latest filing
20 May 2026
Entity
Individual

Observed form types

4 3

CIK-linked evidence first

Robert J. Zulkoski SEC filings Robert J. Zulkoski owner filings Open SEC filing index

Latest Filings

Showing the latest 3 of 3 SEC filings for Robert J. Zulkoski.

4 File 001-43294

4 filing

Filing date
20 May 2026
Reporting date
18 May 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
3 File 001-43294

3 filing

Filing date
14 May 2026
Reporting date
14 May 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
3 File 001-37707

3 filing

Filing date
29 Mar 2024
Reporting date
11 Mar 2024
SEC evidence
Open document Open filing
Next action
Verify source filing
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