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SCHEDULE 13D Filed 2026-05-26 Event 2026-05-18 SEC 0001213900-26-061168 →

Climate Transition Special Opportunities SPAC I LP Energy Transition Special Opportunities ETSS-UN

Stake: 24.63% Shares: 4,925,000 CUSIP: G23017109 Class: Class A ordinary shares, $0.0001 par value

Item 4 — Purpose of Transaction

On July 30, 2025, the Sponsor paid $25,000, or approximately $0.006 per share, to cover certain of the Issuer's offering costs in exchange for 4,541,667 Class B ordinary shares (the "Founder Shares"), pursuant to the Securities Subscription Agreement dated as of July 30, 2025 between the Sponsor and the Issuer (the "Founder Share Purchase Agreement"). On September 4, 2025, the Issuer effected a 1 for 1.26605495295 share split of the Founder Shares. In September 2025, the Sponsor transferred 25,000 Founder Shares to each of the independent directors at a purchase price of approximately $0.004 per share (for an aggregate of 75,000 Founder Shares). On May 18, 2026, the underwriters in the Issuer's initial public offering forfeited their over-allotment option to purchase up to an additional 2,250,000 units. As a result of the over-allotment option forfeiture by the underwriters, 750,000 Class B ordinary shares were forfeited by the Sponsor, resulting in the Sponsor holding an aggregate of 4,925,000 Founder Shares. On May 18, 2026, the Issuer consummated its initial public offering ("IPO") and in connection with the consummation, Sponsor purchased an aggregate of 3,500,000 Placement Warrants for an aggregate purchase price of $3,500,000. The Reporting Persons made the acquisitions reported in this Schedule 13D in support of the Issuer's business plan and for investment purposes. The Reporting Persons may acquire or dispose of additional securities or sell securities of the Issuer from time to time in the market or in private transactions, including as a result of ownership of the warrants referred to above. However, the Reporting Persons do not have any other agreements to acquire additional ordinary shares at this time. As Chief Executive Officer of the Issuer, Mr. Zulkoski is involved in making material business decisions regarding the Issuer's policies and practices and may be involved in the consideration of various proposals considered by the Issuer's board of directors. Additionally, as the Issuer's business plan is to enter into a business combination, Mr. Zulkoski, as Chief Executive Officer of the Issuer, is actively involved in pursuing a suitable target for the Issuer's business combination and will be actively involved in effecting any such business combination if the Issuer's business plan is successful, which may also result in a change in the Issuer's board of directors, corporate structure or charter. As of the date of this Schedule 13D, except as set forth in this Schedule 13D above, the Reporting Persons do not have any plans or proposals which would result in: (a) The acquisition by any person of additional securities of the Issuer, or the disposition of securities of the Issuer; (b) An extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries; (c) A sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries; (d) Any change in the present board of directors or management of the Issuer, including any plans or proposals to change the number or term of the board of directors or management of the Issuer; (e) Any material change in the present capitalization or dividend policy of the Issuer; (f) Any other material change in the Issuer's business or corporate structure; (g) Changes in the Issuer's charter, bylaws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Issuer by any person; (h) Causing a class of securities of the Issuer to be delisted from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association; (i) A class of equity securities of the Issuer becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Act; or (j) Any action similar to any of those actions enumerated above.

Cross-References

Insider Activity (last 365d)
1 transaction
1 buys · 0 sales · 0 awards/exercises
Issuer Cluster
1 13D/G filings on this issuer
0 other filings besides this one
Filer Track Record
1 filings by this filer
0 other filings in the data moat
Short Interest
Not in latest FINRA snapshot

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-05-18 Climate Transition Special Opportunities SPAC I LP director, officer, 10%+ owner Buy 3,500,000 $11.50 $40.25M

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