Plum Acquisition Corp. IV Schedule 13G/A: three affiliated reporting persons jointly disclose beneficial ownership positions in the issuer. Westchester Capital Management, LLC reports 921,100 shares (representing 4.98%), while Virtus Investment Advisers, LLC and The Merger Fund each report 873,367 shares (each 4.72%), based on 18,492,875 shares outstanding as of March 31, 2026.
The filing breaks out voting and dispositive powers: Westchester holds 47,733 shares of sole voting/dispositive power and shares power over 873,367 shares; Virtus and The Merger Fund report only shared voting and dispositive power over 873,367 shares. The statement is signed by compliance officers and counsel.
Plum Acquisition Corp. IV is a Cayman Islands-based blank check company formed to complete a business combination, with no operating revenues to date. It raised $172,500,000 from an initial public offering of 17,250,000 units on January 16, 2025, plus $6,728,750 from a concurrent private placement, and placed $174,225,000 in a trust account.
The company has signed a Business Combination Agreement with Controlled Thermal Resources Holdings Inc. (CTR), under which a merger sub will combine with CTR and Plum will domesticate from Cayman to Delaware. All Class A and Class B ordinary shares and warrants will convert into corresponding Delaware securities on a one-for-one basis, and Class B will convert into common stock at the merger effective time.
Public shareholders are entitled to redeem their shares at a price initially anticipated to be $10.10 per share from the trust in connection with the initial business combination, subject to specified limitations. If no business combination is completed by July 16, 2026, Plum will redeem public shares and liquidate, leaving warrants worthless. The filing highlights extensive risks, including high redemption levels, competition among SPACs, macroeconomic and geopolitical instability, regulatory reviews such as potential CFIUS scrutiny, and the risk of being deemed an investment company.
Plum Acquisition Corp. IV announced it has entered into a definitive business combination agreement with Controlled Thermal Resources Holdings Inc. (CTR), an emerging U.S. developer of geothermal power and critical minerals. The deal would make CTR a public company listed on Nasdaq under the ticker “CTRH”.
CTR’s Hell’s Kitchen Project in California is designed to supply up to 650 MW of renewable baseload power and about 100,000 metric tons per year of lithium carbonate at full scale, plus large volumes of potash and other critical minerals. CTR has raised over US$285 million in private capital, completed a definitive feasibility study for Stage 1, secured a conditional use permit, and invested about $185 million in long‑lead equipment. The transaction, unanimously approved by both boards, is expected to close in the second half of 2026, subject to shareholder approvals, regulatory clearances, and other customary conditions, with a pro forma enterprise value of roughly $4.7 billion and CTR holders expected to own about 90.6% of the combined company.
Healthcare of Ontario Pension Plan Trust Fund (HOOPP) filed a Schedule 13G/A disclosing no beneficial ownership of Plum Acquisition Corp. IV Class A ordinary shares. The filing reports an aggregate amount beneficially owned of 0.00, representing 0% of the class, and indicates sole and shared voting and dispositive powers of 0. HOOPP identifies itself as a pension plan formed as a trust under Ontario law and registered with the Financial Services Regulatory Authority of Ontario and certifies that the securities, if any, would be held in the ordinary course of business.
Barclays PLC reports beneficial ownership of 651,050 shares of Plum Acquisition Corp. IV common stock, representing 3.52% of the class. Barclays reports sole voting and sole dispositive power over all shares it holds, indicating it controls how those shares are voted and sold.
The filing identifies Barclays as a holding company with related entities Barclays Bank PLC and Barclays Capital Inc. named in the schedule. The statement certifies the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.