Insider · SEC Form 4 filer
Jean-Marc Gilson
Past buys: 2 of 5 beat
Companies
Where they file as an insider
Corteva (CTVA) Director Latest filing Apr 28, 2026
Westlake Chemical Partners (WLKP) President and CEO, Director Latest filing Aug 27, 2025
Track record
Did their buys beat the typical stock?
Open-market buys13
Quarters checked 6 months later5
Beat the typical stock 2 of 5
Quarters too new to check0
2 of 5 checked quarters beat the typical stock. A past record is data, not a forecast.
Westlake Chemical Partners (WLKP) Bought Aug 15–27, 2025 · $160K · 7,295 shares Beat typical Sep 30, 2025 $20.99 → Mar 31, 2026 $22.09 · +5.2% (typical stock −3.4%)
Westlake Chemical Partners (WLKP) Bought May 29, 2025 · $2.08K · 94 shares Behind typical Jun 30, 2025 $22.09 → Dec 31, 2025 $19.00 · −14.0% (typical stock +2.1%)
Westlake Chemical Partners (WLKP) Bought Feb 25, 2025 · $2.04K · 83 shares Behind typical Mar 31, 2025 $23.09 → Sep 30, 2025 $20.99 · −9.1% (typical stock +7.3%)
Westlake Chemical Partners (WLKP) Bought Nov 27, 2024 · $2K · 85 shares Behind typical Dec 31, 2024 $23.14 → Jun 30, 2025 $22.09 · −4.5% (typical stock −3.4%)
Westlake Chemical Partners (WLKP) Bought Aug 22–29, 2024 · $89.8K · 3,927 shares Beat typical Sep 30, 2024 $22.41 → Mar 31, 2025 $23.09 · +3.0% (typical stock −7.5%)
Each row is one stock in one quarter, however many buys it took. We take the stock's price at the end of that quarter and again 6 months later, and compare it with the typical stock over the same dates. Prices are quarter-end values from funds' 13F reports (the middle value across 3 or more funds), through Sep 30, 2026. Moves past 3 times up or down, mostly stock splits, are left out. How we tested this.
Past results. This is data, not advice.
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