PERIMETER ACQUISITION CORP I

Historical 13F Holders

Symbol
PMTR
CUSIP
G7010A129
All holders as of
Q2 2026
Type
Equity
Class
COM CL A
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for G7010A129 since 12/18/2024, newest first.

Filer % of Class Filed
Harraden Circle Investments, LLC 13G/A Amendment 3
9.9% 8/14/2026
Event 6/30/2026
Fort Baker Capital Management LP 13G
6.3% 5/15/2026
Event 3/31/2026
Harraden Circle Investments, LLC 13G/A Amendment 2
9.3% 2/13/2026
Event 12/31/2025
Healthcare of Ontario Pension Plan Trust Fund 13G/A Amendment 2 1.8% 2/13/2026
Event 12/31/2025
Healthcare of Ontario Pension Plan Trust Fund 13G/A Amendment 1 5.0% 11/13/2025
Event 9/30/2025
Healthcare of Ontario Pension Plan Trust Fund 13G 6.1% 8/13/2025
Event 6/30/2025
Magnetar Financial LLC 13G
6.1% 8/8/2025
Event 6/30/2025

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q2 57 22.1 M $230 M
2026 Q1 52 21.9 M $225 M
2025 Q4 53 21.5 M $221 M
2025 Q3 45 21.9 M $223 M
2025 Q2 26 17.3 M $176 M