# Plum Acquisition Corp, IV (PLMKW) — merger/spac_merger [pending]
Source: SEC API (secapi.ai) · situation sit_e9a25e29f333215782bc · retrieved 2026-08-12T18:27:38.973Z

## Overview
Controlled Thermal Resources Holdings Inc. develops its flagship Hell's Kitchen Project in California's Imperial Valley, pursuing a phased buildout designed to deliver up to 650 megawatts of renewable baseload geothermal electricity and an estimated 100,000 metric tons per year of lithium carbonate production at full scale, alongside additional U.S.-designated critical minerals including potash,…

Plum Acquisition Corp. IV (Nasdaq: PLMK), a SPAC, and Controlled Thermal Resources Holdings Inc. (CTR), a geothermal and critical minerals developer, announced a definitive business combination agreement on March 9, 2026. Under the agreement, CTR will merge with Plum IV Merger Sub Inc., a wholly owned subsidiary of Plum IV, resulting in CTR becoming a publicly traded company listed on Nasdaq under the ticker symbol "CTRH." The transaction values CTR at a pro forma enterprise value of approximately $4.7 billion. The proposed transaction is expected to close during the second half of 2026, subject to approval by Plum IV shareholders representing a majority of outstanding voting power, effectiveness of a registration statement on Form S-4, expiration of the HSR Act waiting period, and other customary closing conditions. The boards of both CTR and Plum IV have unanimously approved the transaction.

## Terms
- Counterparty: Controlled Thermal Resources Holdings Inc. · Deal value: $4.70B · Consideration: stock

## Key dates
- Announced 2026-01-28 · Expected close 2026-12-31

## Timeline
- 2026-01-28 · 425 (0001213900-26-008399): 425 - Plum Acquisition Corp, IV — *Plum Acquisition Corp. IV is a special purpose acquisition company (SPAC) incorporated in the Cayman Islands and listed on Nasdaq, seeking to identify and complete a business combination with an operating company.* Plum Acquisition Corp. IV (a blank-check SPAC) and American Critical Resources, LLC (a subsidiary of Controlled Thermal Resources Holdings Inc.) have entered into a non-binding letter of intent for a potential business combination. The transaction contemplates the merger of the two entities, with ACR operating the Hell's Kitchen Project, a geothermal power and critical minerals extraction facility in California's Salton Sea region. The parties disclosed that a definitive agreement has not yet been executed, and the transaction remains subject to completion of due diligence, negotiation of definitive agreements, board and shareholder approvals, regulatory approvals, and other customary closing conditions. No deal value or expected closing date has been disclosed at this stage.
  https://www.sec.gov/Archives/edgar/data/2030482/0001213900-26-008399.txt
- 2026-03-09 · 425 (0001213900-26-024935): 425 - Plum Acquisition Corp, IV — *Controlled Thermal Resources Holdings Inc. develops its flagship Hell's Kitchen Project in California's Imperial Valley, pursuing a phased buildout designed to deliver up to 650 megawatts of renewable baseload geothermal electricity and an estimated 100,000 metric tons per year of lithium carbonate production at full scale, alongside additional U.S.-designated critical minerals including potash,…* Plum Acquisition Corp. IV (Nasdaq: PLMK), a SPAC, and Controlled Thermal Resources Holdings Inc. (CTR), a geothermal and critical minerals developer, announced a definitive business combination agreement on March 9, 2026. Under the agreement, CTR will merge with Plum IV Merger Sub Inc., a wholly owned subsidiary of Plum IV, resulting in CTR becoming a publicly traded company listed on Nasdaq under the ticker symbol "CTRH." The transaction values CTR at a pro forma enterprise value of approximately $4.7 billion. The proposed transaction is expected to close during the second half of 2026, subject to approval by Plum IV shareholders representing a majority of outstanding voting power, effectiveness of a registration statement on Form S-4, expiration of the HSR Act waiting period, and other customary closing conditions. The boards of both CTR and Plum IV have unanimously approved the transaction.
  https://www.sec.gov/Archives/edgar/data/2030482/0001213900-26-024935.txt

## Citations
- 0001213900-26-008399 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000121390026008399
- 0001213900-26-024935 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000121390026024935