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Tourmaline Oil Corp

TRMLF
Exchange
OTC
SEC CIK
0002071881

No open-market purchases or sales by Tourmaline Oil Corp insiders were filed in the last 90 days; 5 institutions reported holding it in 13F filings for Q2 2026, worth $19.3M in total; no superinvestor holds it.

Other share classesTRMOY

Q4 2025 vs. Q3 2025

How the institutions holding Tourmaline Oil Corp changed between Q3 2025 and Q4 2025.

All holders in Q4 2025All holders in Q3 2025

13F holders of TRMLF: Q3 2025 compared with Q4 2025
MeasureQ3 2025Q4 2025Change
Holders26+4
Shares429.8K705.6K+275.8K (+64.2%)
Value$18.5M$36.3M+$17.8M (+96.0%)

New holders (4)

Institutions that held Tourmaline Oil Corp at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to TRMLF in Q4 2025
InstitutionSharesValue% of portfolio
Victory Capital Management Inc276,000$17.0M0.01%
Cygnus Capital Advisors, LLC1,900$117.0K0.09%
Wellington-Altus USA Inc.1,894$98.2K0.07%
The PNC Financial Services Group, Inc.1,405$63.1K0.00%

Sold out (0)

Institutions that held Tourmaline Oil Corp at the end of Q3 2025 and filed for Q4 2025 without it.

None.