---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-077224"
form_type: "8-K"
ticker: "PLMK"
cik: "0002030482"
company_name: "Plum Acquisition Corp, IV"
filed_at: "2026-07-10T21:02:41+00:00"
generated_at: "2026-07-10T21:04:05.419288+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Plum IV amends SPAC merger with Controlled Thermal Resources: valuation cut to $3.15B, earnout shares reduced to 70M

## Summary
- Valuation reduced from $4.5B to $3.15B; earnout shares cut from 100M to 70M.
- Outside date extended to April 30, 2027; antitrust filing deadline extended to Sept 30, 2026.
- Non-redemption shares increased from 2M to 3M for holders who agree not to redeem.
- Each of eight earnout tranches reduced proportionally from 12.5M to 8.75M shares.
- Amendment dated July 6, 2026; parties include Plum IV, Merger Sub, and Controlled Thermal Resources.

## SEC filing metadata
- accession: 0001213900-26-077224
- form_type: 8-K
- ticker: PLMK
- cik: 0002030482
- company_name: Plum Acquisition Corp, IV
- filed_at: 2026-07-10T21:02:41+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2030482/000121390026077224/0001213900-26-077224-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2030482/000121390026077224/ea0297595-8k425_plum4.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-077224
- JSON: https://secwatch.observer/filing/0001213900-26-077224.json
- Plain text: https://secwatch.observer/filing/0001213900-26-077224.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.