# EDGAR Filing Document

**Accession Number:** 0002017494
**File Stem:** 0001213900-26-059790
**Filing Date:** 2026-5
**Character Count:** 8868
**Document Hash:** 8947571dd2b24378a2117902245c345b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-059790.hdr.sgml**: 20260520

**ACCESSION NUMBER**: 0001213900-26-059790

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260518

**FILED AS OF DATE**: 20260520

**DATE AS OF CHANGE**: 20260520

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** ZULKOSKI ROBERT JOSEPH
- **CENTRAL INDEX KEY:** 0002017494

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43294
- **FILM NUMBER:** 261005728

**MAIL ADDRESS:**
- **STREET 1:** 110 EAST 40TH STREET, SUITE 803
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10016

**FORMER NAME:**
- **FORMER CONFORMED NAME:** Zulkoski Robert J
- **DATE OF NAME CHANGE:** 20240328
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Climate Transition Special Opportunities SPAC I LP
- **CENTRAL INDEX KEY:** 0002106000

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43294
- **FILM NUMBER:** 261005729

**BUSINESS ADDRESS:**
- **STREET 1:** 110 EAST 40TH STREET
- **STREET 2:** SUITE 803
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10016
- **BUSINESS PHONE:** 917-747-2787

**MAIL ADDRESS:**
- **STREET 1:** 110 EAST 40TH STREET
- **STREET 2:** SUITE 803
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10016
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Energy Transition Special Opportunities
- **CENTRAL INDEX KEY:** 0002085932
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 71 ORCHARD PL, UNIT 1
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830
- **BUSINESS PHONE:** 212-400-0011

**MAIL ADDRESS:**
- **STREET 1:** 71 ORCHARD PL, UNIT 1
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Climate Transition Special Opportunities SPAC I
- **DATE OF NAME CHANGE:** 20250915

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Climate Transition Special Opportunities SPAC I LP<br><sub>(Last) (First) (Middle)</sub><br>C/O ENERGY TRANSITION SPECIAL<br>OPPORTUNITIES 71 ORCHARD PL, UNIT 1<br><sub>(Street)</sub><br>GREENWICH, CT 06830<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-05-18 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Energy Transition Special Opportunities [ ETSS ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>ZULKOSKI ROBERT JOSEPH<br><sub>(Last) (First) (Middle)</sub><br>C/O ENERGY TRANSITION SPECIAL<br>OPPORTUNITIES 71 ORCHARD PL, UNIT 1<br><sub>(Street)</sub><br>GREENWICH, CT 06830<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-05-18 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Executive Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Energy Transition Special Opportunities [ ETSS ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Warrants<sup>(1)</sup> | $11.5 | 2026-05-18 |  | P |  | 3500000 |  | <sup>(3)</sup> | <sup>(4)</sup> | Class A Ordinary Shares | 3500000 | <sup>(1)</sup> | 3500000 | D<sup>(2)</sup> |  |

---

### Footnotes:

(1) 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.

(2) 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.

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

(4) 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.

**Signature:** /s/ Tricia Branker, Attorney-in-Fact  
**Date:** 2026-05-20

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**