Westlake Chemical Corp (WLK)

In the past 90 days, Westlake Chemical Corp has seen two insider trading transactions, with a net value of $1,717.27. Notably, Robert F. Buesinger, EVP and PEM Segment Head, executed a buy of $7,751.37 on April 22, 2025, followed by a sell of $6,034.10 on May 27, 2025. The company's stock has declined by 23.3% over the last 90 days, and the last earnings report on April 29, 2025, showed a significant earnings miss of -144.89%.

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Stock chart
Ticker: WLK Exchange: NYS


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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Earnings
Earnings
 
Value bought

Past 90 days

 
Value sold

Past 90 days

 
Net insiders buying

Past 90 days

 
Trades (buy and sell)

Past 90 days

Abbreviations B: Buy, S: Sell, PP: Planned purchase, PS: Planned sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2025-06-09 2025-05-27 S Sale

Buesinger Robert F.

EVP, PEM Segment Head

Officer
83 -100.0%
72.70
USD 6,034 		83 -100.0% 72.70 USD 6,034
2025-06-09 2025-04-22 B Purchase

Buesinger Robert F.

EVP, PEM Segment Head

Officer
83 +inf%
93.39
USD 7,751 		83 +inf% 93.39 USD 7,751
2024-12-02 2024-11-29 S Sale

Chao David Tsung-Hung

Non-Executive Director
1,750 -18.4%
129.08
USD 225,888 		1,750 -18.4% 129.08 USD 225,888
2024-11-25 2024-11-22 S Sale

Chao David Tsung-Hung

Non-Executive Director
1,750 -15.5%
130.00
USD 227,500 		1,750 -15.5% 130.00 USD 227,500
2024-05-13 2024-05-09 S Sale

Buesinger Robert F.

EVP, HIP, IT & Digital

Officer
3,500 -16.6%
158.50
USD 554,750 		3,500 -16.6% 158.50 USD 554,750
2024-05-06 2024-05-03 S Sale

Bender Mark Steven

EVP & CFO

Officer
4,950 -10.9%
152.19
USD 753,341 		4,950 -10.9% 152.19 USD 753,341
2024-03-18 2024-03-15 S Sale

Buesinger Robert F.

EVP, HIP, IT & Digital

Officer
3,878 -15.5%
144.50
USD 560,371 		3,878 -15.5% 144.50 USD 560,371
2024-03-14 2024-03-13 S Sale

Buesinger Robert F.

EVP, HIP, IT & Digital

Officer
122 -0.5%
144.50
USD 17,629 		122 -0.5% 144.50 USD 17,629
2024-03-07 2024-03-06 S Sale

Bender Mark Steven

EVP & CFO

Officer
4,804 -9.6%
141.02
USD 677,455 		4,804 -9.6% 141.02 USD 677,455
2024-02-28 2024-02-26 S Sale

Bender Mark Steven

EVP & CFO

Officer
4,854 -8.8%
137.57
USD 667,765 		4,854 -8.8% 137.57 USD 667,765
2023-11-17 2023-11-15 S Sale

Buesinger Robert F.

EVP, HIP, IT & Digital

Officer
4,215 -20.1%
130.50
USD 550,058 		4,215 -20.1% 130.50 USD 550,058
2023-08-24 2023-08-23 S Sale

Chao David Tsung-Hung

Non-Executive Director Large shareholder
1,000 -9.0%
131.00
USD 131,000 		1,000 -9.0% 131.00 USD 131,000
2022-09-01 2022-08-31 S Sale

Buesinger Robert F.

EVP, HIP, IT & Digital

Officer
1,000 -8.9%
98.94
USD 98,940 		1,000 -8.9% 98.94 USD 98,940
2022-08-29 2022-08-26 S Sale

Zoeller Johnathan Stevan

VP & Chief Accounting Officer

Officer
542 -50.0%
107.08
USD 58,037 		542 -50.0% 107.08 USD 58,037
2022-05-31 2022-05-27 S Sale

Buesinger Robert F.

EVP, HIP, IT & Digital

Officer
14,427 -55.1%
129.47
USD 1,867,820 		14,427 -55.1% 129.47 USD 1,867,820
2022-05-23 2022-05-19 S Sale

Chao Albert

President & CEO

Executive Director Large shareholder
5,045 -1.1%
129.38
USD 652,712 		5,045 -1.1% 129.38 USD 652,712
2022-05-23 2022-05-19 S Sale

Chao Albert

President & CEO

Executive Director Large shareholder
20,815 -4.2%
130.20
USD 2,710,019 		20,815 -4.2% 130.20 USD 2,710,019
2022-05-23 2022-05-19 S Sale

Chao Albert

President & CEO

Executive Director Large shareholder
12,016 -2.4%
131.11
USD 1,575,450 		12,016 -2.4% 131.11 USD 1,575,450
2022-05-18 2022-05-17 S Sale

Kearns Roger L.

COO and EVP - PEM

Officer
8,388 -24.1%
136.24
USD 1,142,739 		8,388 -24.1% 136.24 USD 1,142,739
2022-05-06 2022-05-05 S Sale

Ederington L. Benjamin

EVP, GC, CAO and Secretary

Officer
3,143 -7.7%
139.26
USD 437,694 		3,143 -7.7% 139.26 USD 437,694
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