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Perimeter Acquisition Corp. I

PMTRU
Exchange
Nasdaq
Industry
Blank Checks
SEC CIK
0002061473

No open-market purchases or sales by Perimeter Acquisition Corp. I insiders were filed in the last 90 days; 8 institutions reported holding it in 13F filings for Q2 2026, worth $7.51M in total; no superinvestor holds it.

Other share classesPMTRPMTRW

Q1 2026 vs. Q4 2025

How the institutions holding Perimeter Acquisition Corp. I changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of PMTRU: Q4 2025 compared with Q1 2026
MeasureQ4 2025Q1 2026Change
Holders98−1
Shares891.6K691.6K−200.0K (−22.4%)
Value$9.47M$7.42M−$2.05M (−21.6%)

New holders (0)

Institutions that held Perimeter Acquisition Corp. I at the end of Q1 2026 but not at the end of Q4 2025.

None.

Sold out (1)

Institutions that held Perimeter Acquisition Corp. I at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of PMTRU in Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Westchester Capital Management, LLC150,000$1.60M