Climate Transition Special Opportunities SPAC I LP - 18 May 2026 Form 4 Insider Report for Energy Transition Special Opportunities (ETSS)

Reporting relationship: 10%+ Owner
Issuer ticker: ETSS
Reported as of: 18 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 20 May 2026, 21:46:27 UTC
Prior SEC filing: 14 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Tricia Branker, Attorney-in-Fact

Filing notes and source

Key filing fact

Climate Transition Special Opportunities SPAC I LP filed Form 4 for Energy Transition Special Opportunities (ETSS) on 20 May 2026.

Key facts

This page summarizes Climate Transition Special Opportunities SPAC I LP's Form 4 filing for Energy Transition Special Opportunities (ETSS).
1 reported transaction and 2 derivative rows are listed below.
Accepted by SEC: 20 May 2026, 21:46.

Change

Previous filing in this sequence was filed on 14 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (2)

CIK 0002106000 Primary reporting owner

Climate Transition Special Opportunities SPAC I LP

Relationship: 10%+ Owner
Address: C/O ENERGY TRANSITION SPECIAL, OPPORTUNITIES 71 ORCHARD PL, UNIT 1, GREENWICH
Signature: /s/ Tricia Branker, Attorney-in-Fact
Signature date: 20 May 2026

CIK 0002017494

ZULKOSKI ROBERT JOSEPH

Relationship: Chief Executive Officer, Director, 10%+ Owner
Address: C/O ENERGY TRANSITION SPECIAL, OPPORTUNITIES 71 ORCHARD PL, UNIT 1, GREENWICH
Signature: /s/ Tricia Branker, Attorney-in-Fact
Signature date: 20 May 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ETSS transaction Derivative

Warrants

Purchase

Transaction value
Shares: +3,500,000
Change %
Price
Shares after: 3,500,000
Date: 18 May 2026
Ownership: Direct
Underlying class: Class A Ordinary Shares
Underlying amount: 3,500,000
Exercise price: $11.50
Footnotes: F1, F2, F3, F4

ETSS transaction Derivative

Warrants

Purchase

Transaction value
Shares: +3,500,000
Change %
Price
Shares after: 3,500,000
Date: 18 May 2026
Ownership: Direct
Underlying class: Class A Ordinary Shares
Underlying amount: 3,500,000
Exercise price: $11.50
Footnotes: F1, F2, F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Simultaneously with the consummation of the Issuer's initial public offering, Climate Transition Special Opportunities SPAC I LP (the "Sponsor") acquired, at a price of $1.00 per warrant, 3,500,000 (the "Private Placement Warrants") in a private placement for an aggregate purchase price of $3,500,000. Each whole private placement warrant is exercisable to purchase one Class A ordinary share at a price of $11.50 per share, subject to adjustment, terms and limitations, as described in the Registration Statement on Form S-1 (File No. 333-290458) related to the Issuer's initial public offering.

Footnote F2

The general partner of our sponsor is Climate Transition Special Opportunities SPAC I GP LLC, which is controlled indirectly by Robert Zulkoski. Accordingly, Mr. Zulkoski may be deemed to have beneficial ownership of the Class B ordinary shares held directly by our sponsor. Mr. Zulkoski disclaims such beneficial ownership other than to the extent of his pecuniary interest.

Footnote F3

The Private Placement Warrants will become exercisable at any time commencing 30 days after the completion of the Company's initial business combination.

Footnote F4

The Private Placement Warrants will expire five years after the completion of the Company's initial business combination, at 5:00 p.m., New York City time, or earlier upon redemption or liquidation.