Westlake Chemical Partners LP (WLKP) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2025-08-27

Westlake Chemical Partners LP (WLKP) — no SEC Form 4 insider filings recorded in the last 90 days. 2 Form 8-K material event filings were reported by WLKP in the last 90 days. InsiderAlpha tracks every WLKP SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Westlake Chemical Partners LP (WLKP)

SEC CIK	0001604665

90-Day SEC Filing Activity

Form 8-K filings (90d)	2
Latest Form 4 filing	2025-08-27

Recent WLKP Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2025-08-27	Gilson Jean-Marc	President and CEO	P — Open-market purchase	95	$21.25	$2K	SEC
2025-08-21	Gilson Jean-Marc	President and CEO	P — Open-market purchase	1.2K	$22.02	$28K	SEC
2025-08-20	Gilson Jean-Marc	President and CEO	P — Open-market purchase	1.2K	$21.86	$27K	SEC
2025-08-15	Gilson Jean-Marc	President and CEO	P — Open-market purchase	4.7K	$21.84	$103K	SEC
2025-08-07	FINLEY G STEPHEN	Insider	M — Option exercise	4.9K	—	—	SEC
2025-08-07	WOELFEL RANDY	Insider	M — Option exercise	4.9K	—	—	SEC
2025-08-07	WOELFEL RANDY	Insider	D — Derivative transaction	4.9K	$21.96	$107K	SEC
2025-08-07	Friel Lisa A.	Insider	M — Option exercise	4.9K	—	—	SEC
2025-08-07	Friel Lisa A.	Insider	D — Derivative transaction	2.4K	$21.96	$54K	SEC
2025-05-29	Chao James	Senior Chairman	S — Open-market sale	3.7K	$22.10	$82K	SEC
2025-05-29	Gilson Jean-Marc	President and CEO	P — Open-market purchase	94	$22.20	$2K	SEC
2025-05-28	Chao James	Senior Chairman	S — Open-market sale	4.6K	$22.10	$102K	SEC
2025-05-27	Chao James	Senior Chairman	S — Open-market sale	5.6K	$22.17	$124K	SEC
2025-02-25	Gilson Jean-Marc	President and CEO	P — Open-market purchase	83	$24.75	$2K	SEC
2024-11-27	Gilson Jean-Marc	President and CEO	P — Open-market purchase	85	$23.57	$2K	SEC

All transactions sourced from SEC EDGAR Form 4 filings for Westlake Chemical Partners LP (WLKP). Updated in real time as new filings are submitted to the SEC.

Recent WLKP Form 8-K Material Events

2026-05-05 — Item 2.02, 7.01, 9.01 [SEC]
2026-04-20 — Item 5.02, 7.01, 9.01 · Leadership · neutral [SEC]
Westlake Chemical Partners LP announced the appointment of Jonathan H. Baksht as Senior Vice President and Chief Financial Officer, effective June 15, 2026, succeeding M. Steven Bender who will retire by year-end. Baksht brings extensive CFO experience from Fortune Brands Innovat
2026-02-24 — Item 2.02, 7.01, 9.01 · Earnings · neutral [SEC]
Westlake Chemical Partners LP announced its 2025 fourth quarter and full year financial results on February 24, 2026, via press release and conference call. This is a routine quarterly earnings disclosure with no indication of material surprises, strategic changes, or significant
2026-02-23 — Item 5.02 · Leadership · neutral [SEC]
M. Steven Bender, Executive Vice President and Chief Financial Officer of Westlake Chemical Partners GP LLC, notified the company on February 18, 2026 of his intention to retire effective upon appointment of a successor. The departure was stated to be voluntary and not the result

Recent Insider Filings

2025-08-27 — Gilson Jean-Marc (President and CEO)
2025-08-06 — WOELFEL RANDY (Insider)
2025-08-06 — Friel Lisa A. (Insider)
2025-08-06 — FINLEY G STEPHEN (Insider)
2025-05-29 — Chao James (Senior Chairman)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in WLKP insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

WLKP Insider Trading — FAQ

What is the latest insider trade for WLKP?: Westlake Chemical Partners LP (WLKP) had 0 insider filings in the last 90 days, with the most recent on 2025-08-27. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying WLKP stock?: 0 insider purchases of WLKP were filed in the last 90 days.
How many insiders are selling WLKP stock?: 0 insider sales of WLKP were filed in the last 90 days.
Where can I see WLKP SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every WLKP SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

Open the live WLKP dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.