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NYSE · CIK 0001604665

WLKP Westlake Chemical Partners LP

Insider trading from SEC Form 4. Last filing Aug 29, 2025. Close $21.19 on Oct 9, 2026, +26% from the 52-week low and -7% from the high.

Last 90 days

Net insider value
$0
no open-market trades
Buys
0
$0 by 0 insiders
Sells
0
$0 by 0 insiders
Insiders on file
5
with a Form 4 at this company

Price and insider trades, last year

WLKPOct 9, 2026 · close 21.19

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

Open-market buys and sells at Westlake Chemical Partners LP, scored.

ScoreInsiderValueHoldingsPrice contextFiled
20WeakJean-Marc Gilson
President and CEO
buy
$2,025
95 shares
+1%-
46ModerateJean-Marc Gilson
President and CEO
buy
$164k
7,461 shares
+176%-
28WeakJean-Marc Gilson
President and CEO
buy
$7,344
320 shares
+10%-
49ModerateJames Chao
Senior Chairman
sell
$82k
3,700 shares
-100%-
53ModerateJames Chao
Senior Chairman
sell
$226k
10,208 shares
-73%-

Transactions

The last 22 rows filed, every code.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
Aug 27, 2025Jean-Marc Gilson
President and CEO
POpen-market purchase
Common Units
+95$21.25$2,02511,803Aug 29, 2025
Aug 28, 2024Jean-Marc Gilson
President and CEO
POpen-market purchase
Common Units
+320$22.95$7,3443,427Aug 28, 2025
Nov 27, 2024Jean-Marc Gilson
President and CEO
POpen-market purchase
Common Units
+85$23.57$2,0024,332Aug 28, 2025
Feb 25, 2025Jean-Marc Gilson
President and CEO
POpen-market purchase
Common Units
+83$24.75$2,0424,414Aug 28, 2025
May 29, 2025Jean-Marc Gilson
President and CEO
POpen-market purchase
Common Units
+94$22.20$2,0814,508Aug 28, 2025
Aug 15, 2025Jean-Marc Gilson
President and CEO
POpen-market purchase
Common Units
+4,700$21.84$103k9,208Aug 28, 2025
Aug 20, 2025Jean-Marc Gilson
President and CEO
POpen-market purchase
Common Units
+1,250$21.86$27k10,458Aug 28, 2025
Aug 21, 2025Jean-Marc Gilson
President and CEO
POpen-market purchase
Common Units
+1,250$22.02$28k11,708Aug 28, 2025
Aug 7, 2025Randy Woelfel
director
MOption exercise
Common Units
+4,882--28,795Aug 8, 2025
Aug 7, 2025Lisa A. Friel
director
MOption exercise
Common Units
+4,882--9,604Aug 8, 2025
Aug 7, 2025G Stephen Finley
director
MOption exercise
Common Units
+4,882--31,930Aug 8, 2025
Aug 7, 2025Randy Woelfel
director
DDisposition to issuer
Common Units
-4,882$21.96$107k23,913Aug 8, 2025
Aug 6, 2025G Stephen Finley
director
AGrant or award
Phantom Unitsderivative
+5,005$0.00$00Aug 8, 2025
Aug 7, 2025Lisa A. Friel
director
DDisposition to issuer
Common Units
-2,441$21.96$54k7,163Aug 8, 2025
Aug 6, 2025Lisa A. Friel
director
AGrant or award
Phantom Unitsderivative
+5,005$0.00$00Aug 8, 2025
Aug 6, 2025Randy Woelfel
director
AGrant or award
Phantom Unitsderivative
+5,005$0.00$00Aug 8, 2025
Aug 7, 2025G Stephen Finley
director
MOption exercise
Phantom Unitsderivative
-4,882$0.00$00Aug 8, 2025
Aug 7, 2025Lisa A. Friel
director
MOption exercise
Phantom Unitsderivative
-4,882$0.00$00Aug 8, 2025
Aug 7, 2025Randy Woelfel
director
MOption exercise
Phantom Unitsderivative
-4,882$0.00$00Aug 8, 2025
May 29, 2025James Chao
Senior Chairman
SOpen-market sale
Common Units
-3,700$22.10$82k0May 30, 2025
May 27, 2025James Chao
Senior Chairman
SOpen-market sale
Common Units
-5,608$22.17$124k8,300May 29, 2025
May 28, 2025James Chao
Senior Chairman
SOpen-market sale
Common Units
-4,600$22.10$102k3,700May 29, 2025

Insiders

Everyone who has filed a Form 4 here.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

WLKP insider trading: Westlake Chemical Partners LP | InsiderTell