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Westlake Chemical Partners LP

WLKP Net buying
CIK 0001604665 #2783 in the set updated 17 Sep 2026
Bought (120 mo)
$38.22M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$1.26M
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$1.26M
6 of 6 sales
Net
+$36.96M
+$36.96M against sales at will

By person

16 insiders · 98 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
TTWFGP LLC entity
10% owner
$30.00M (1)
—
+$30.00M
15,524,099
$329.89M
+9.9%
Kenner Andrew
SVP, Olefin Material & Corp Pr
$3.71M (26)
—
+$3.71M
185,000
$3.93M
+740.9%
Chao Albert
President & CEO
$2.73M (27)
—
+$2.73M
28,438,170
$604.31M
+0.5%
Chao James
Senior Chairman
$415.55K (2)
$1.14M (5)
−$728.91K
14,185,703
$301.45M
−0.3%
Lumpkins David
Director
$309.17K (4)
—
+$309.17K
44,518
$946.01K
+100.0%
Gilson Jean-Marc
President and CEO
$255.42K (13)
—
+$255.42K
11,803
$250.82K
+3,589%
Minas Angela A
Director
$218.75K (2)
—
+$218.75K
32,809
$697.19K
+378.0%
Teel Lawrence E.
SVP, Olefins
$208.56K (5)
—
+$208.56K
12,800
$272.00K
+412.0%
WOELFEL RANDY
Director
$165.97K (6)
—
+$165.97K
34,913
$741.90K
+217.4%
Mangieri George J
VP & Chief Accounting Officer
—
$114.65K (1)
−$114.65K
0
$0.00
−100.0%
FINLEY G STEPHEN
Director
$93.87K (1)
—
+$93.87K
36,935
$784.87K
—
Bender Mark Steven
SVP, CFO
$77.52K (3)
—
+$77.52K
14,000
$297.50K
+40.0%
Ederington L. Benjamin
VP, General Counsel
$29.84K (2)
—
+$29.84K
12,000
$255.00K
+20.0%
WPT LLC entity
10% owner
—
—
—
14,122,230
$300.10M
+883.4%
LUKENS MAX L
Director
—
—
—
125,000
$2.66M
0.0%
Friel Lisa A.
Director
—
—
—
9,666
$205.40K
—

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Individual transactions

92
Insider
Date
Role
Action
Shares
Price
Amount
Gilson Jean-Marc
27 Aug 2025
President and CEO
Buy
95
$21.25
$2.02K
Gilson Jean-Marc
21 Aug 2025
President and CEO
Buy
1,250
$22.02
$27.53K
Gilson Jean-Marc
20 Aug 2025
President and CEO
Buy
1,250
$21.86
$27.33K
Gilson Jean-Marc
15 Aug 2025
President and CEO
Buy
4,700
$21.84
$102.65K
Gilson Jean-Marc
29 May 2025
President and CEO
Buy
94
$22.20
$2.08K
Gilson Jean-Marc
25 Feb 2025
President and CEO
Buy
83
$24.75
$2.04K
Gilson Jean-Marc
27 Nov 2024
President and CEO
Buy
85
$23.57
$2.00K
Gilson Jean-Marc
29 Aug 2024
President and CEO
Buy
1,000
$22.83
$22.83K
Gilson Jean-Marc
28 Aug 2024
President and CEO
Buy
500
$22.94
$11.47K
Gilson Jean-Marc
27 Aug 2024
President and CEO
Buy
1,000
$22.95
$22.95K
Gilson Jean-Marc
26 Aug 2024
President and CEO
Buy
500
$22.85
$11.42K
Gilson Jean-Marc
23 Aug 2024
President and CEO
Buy
500
$22.88
$11.44K
Gilson Jean-Marc
22 Aug 2024
President and CEO
Buy
427
$22.60
$9.65K
Kenner Andrew
12 Aug 2024
SVP, Olefin Material & Corp Pr
Buy
2,692
$22.63
$60.91K
Kenner Andrew
9 Aug 2024
SVP, Olefin Material & Corp Pr
Buy
12,000
$22.99
$275.87K
Kenner Andrew
30 May 2024
SVP, Olefin Material & Corp Pr
Buy
2,291
$22.23
$50.93K
Kenner Andrew
10 May 2024
SVP, Olefin Material & Corp Pr
Buy
7,178
$22.07
$158.44K
Kenner Andrew
8 May 2024
SVP, Olefin Material & Corp Pr
Buy
10,000
$22.10
$221.00K
Kenner Andrew
28 Mar 2024
SVP, Olefin Material & Corp Pr
Buy
5,000
$22.23
$111.15K
Kenner Andrew
21 Mar 2024
SVP, Olefin Material & Corp Pr
Buy
4,230
$22.16
$93.74K
Kenner Andrew
6 Mar 2024
SVP, Olefin Material & Corp Pr
Buy
5,000
$22.30
$111.50K
Kenner Andrew
22 Feb 2024
SVP, Olefin Material & Corp Pr
Buy
10,000
$22.12
$221.16K
Kenner Andrew
9 Nov 2023
SVP, Olefin Material & Corp Pr
Buy
5,000
$21.48
$107.40K
Kenner Andrew
6 Nov 2023
SVP, Olefin Material & Corp Pr
Buy
10,000
$22.02
$220.18K
Kenner Andrew
29 Aug 2023
SVP, Olefin Material & Corp Pr
Buy
10,000
$22.74
$227.38K
Kenner Andrew
22 Aug 2023
SVP, Olefin Material & Corp Pr
Buy
11,762
$22.30
$262.30K
Kenner Andrew
21 Aug 2023
SVP, Olefin Material & Corp Pr
Buy
643
$22.11
$14.22K
Kenner Andrew
17 Aug 2023
SVP, Olefin Material & Corp Pr
Buy
5,000
$22.08
$110.41K
Kenner Andrew
16 Aug 2023
SVP, Olefin Material & Corp Pr
Buy
3,349
$22.23
$74.43K
Kenner Andrew
15 Aug 2023
SVP, Olefin Material & Corp Pr
Buy
855
$22.00
$18.81K
Kenner Andrew
10 Aug 2023
SVP, Olefin Material & Corp Pr
Buy
5,000
$22.55
$112.75K
Kenner Andrew
9 Aug 2023
SVP, Olefin Material & Corp Pr
Buy
5,000
$23.00
$115.00K
Kenner Andrew
7 Aug 2023
SVP, Olefin Material & Corp Pr
Buy
5,000
$23.00
$115.00K
Kenner Andrew
13 Mar 2023
SVP, Olefin Material & Corp Pr
Buy
5,000
$21.44
$107.21K
Kenner Andrew
10 Mar 2023
SVP, Olefin Material & Corp Pr
Buy
10,000
$22.02
$220.20K
Kenner Andrew
15 Nov 2022
SVP, Olefin Material & Corp Pr
Buy
4,362
$22.97
$100.21K
Kenner Andrew
10 Nov 2022
SVP, Olefin Material & Corp Pr
Buy
5,638
$22.98
$129.55K
Kenner Andrew
8 Mar 2022
SVP, Olefin Material & Corp Pr
Buy
10,000
$26.34
$263.40K
Kenner Andrew
7 Mar 2022
SVP, Olefin Material & Corp Pr
Buy
8,000
$26.15
$209.22K
FINLEY G STEPHEN
5 Mar 2021
Director
Buy
4,000
$23.47
$93.87K
WOELFEL RANDY
13 Nov 2020
Director
Buy
500
$18.59
$9.30K
WOELFEL RANDY
12 Nov 2020
Director
Buy
500
$18.70
$9.35K
WOELFEL RANDY
11 Nov 2020
Director
Buy
1,000
$18.57
$18.57K
Chao Albert
24 Mar 2020
President & CEO
Buy
1,579
$14.18
$22.39K
Chao Albert
24 Mar 2020
President & CEO
Buy
3,200
$13.46
$43.07K
WOELFEL RANDY
23 Mar 2020
Director
Buy
3,000
$13.14
$39.42K
Ederington L. Benjamin
23 Mar 2020
VP, General Counsel
Buy
1,000
$13.83
$13.83K
Chao Albert
23 Mar 2020
President & CEO
Buy
4,780
$13.12
$62.71K
WOELFEL RANDY
20 Mar 2020
Director
Buy
3,000
$13.90
$41.69K
Chao Albert
20 Mar 2020
President & CEO
Buy
1,400
$14.28
$19.99K
Chao Albert
20 Mar 2020
President & CEO
Buy
12,281
$13.86
$170.21K
Chao Albert
19 Mar 2020
President & CEO
Buy
7,035
$14.20
$99.90K
Chao Albert
19 Mar 2020
President & CEO
Buy
2,100
$12.44
$26.12K
WOELFEL RANDY
18 Mar 2020
Director
Buy
4,000
$11.91
$47.64K
Chao Albert
18 Mar 2020
President & CEO
Buy
5,796
$12.12
$70.25K
Chao Albert
18 Mar 2020
President & CEO
Buy
10,178
$11.43
$116.33K
Chao Albert
17 Mar 2020
President & CEO
Buy
3,680
$14.26
$52.48K
Chao Albert
17 Mar 2020
President & CEO
Buy
6,856
$13.59
$93.17K
Chao Albert
16 Mar 2020
President & CEO
Buy
7,535
$14.15
$106.62K
Bender Mark Steven
13 Mar 2020
SVP, CFO
Buy
1,000
$14.91
$14.91K
Chao Albert
13 Mar 2020
President & CEO
Buy
3,580
$15.18
$54.34K
Bender Mark Steven
12 Mar 2020
SVP, CFO
Buy
1,000
$15.07
$15.07K
Ederington L. Benjamin
12 Mar 2020
VP, General Counsel
Buy
1,000
$16.01
$16.01K
Teel Lawrence E.
11 Mar 2020
SVP, Olefins
Buy
2,500
$16.80
$42.00K
Teel Lawrence E.
10 Mar 2020
SVP, Olefins
Buy
2,500
$18.11
$45.27K
TTWFGP LLC
29 Mar 2019
10% owner
Buy
1,401,869
$21.40
$30.00M
Lumpkins David
30 Nov 2018
Director
Buy
4,000
$22.56
$90.24K
Minas Angela A
26 Nov 2018
Director
Buy
5,000
$22.75
$113.75K
Chao Albert
19 Nov 2018
President & CEO
Buy
10,386
$23.24
$241.37K
Chao Albert
16 Nov 2018
President & CEO
Buy
12,452
$23.27
$289.76K
Chao Albert
15 Nov 2018
President & CEO
Buy
2,492
$23.20
$57.82K
Chao Albert
14 Nov 2018
President & CEO
Buy
11,385
$23.37
$266.06K
Chao Albert
13 Nov 2018
President & CEO
Buy
6,220
$23.24
$144.58K
Lumpkins David
12 Nov 2018
Director
Buy
4,000
$22.83
$91.31K
Chao James
12 Nov 2018
Director
Buy
10,000
$22.77
$227.70K
Chao Albert
6 Mar 2018
President & CEO
Buy
2,000
$23.16
$46.32K
Chao Albert
5 Mar 2018
President & CEO
Buy
2,000
$22.91
$45.82K
Teel Lawrence E.
2 Mar 2018
SVP, Olefins
Buy
1,900
$22.75
$43.23K
Chao Albert
2 Mar 2018
President & CEO
Buy
2,000
$22.86
$45.72K
Chao Albert
1 Mar 2018
President & CEO
Buy
2,500
$22.98
$57.45K
Teel Lawrence E.
1 Mar 2018
SVP, Olefins
Buy
3,100
$22.75
$70.53K
Bender Mark Steven
27 Feb 2018
SVP, CFO and Treasurer
Buy
2,000
$23.77
$47.54K
Chao James
4 Dec 2017
Director
Buy indirect
8,473
$22.17
$187.85K
Chao Albert
29 Nov 2017
President & CEO
Buy indirect
7,425
$22.00
$163.35K
Chao Albert
28 Nov 2017
President & CEO
Buy indirect
7,475
$21.96
$164.15K
Chao Albert
27 Nov 2017
President & CEO
Buy indirect
7,475
$22.18
$165.80K
Chao Albert
24 Nov 2017
President & CEO
Buy indirect
2,900
$21.97
$63.70K
Chao Albert
22 Nov 2017
President & CEO
Buy
2,000
$21.49
$42.99K
Teel Lawrence E.
7 Aug 2017
SVP, Olefins
Buy
300
$25.15
$7.54K
Lumpkins David
9 Mar 2017
Director
Buy
2,500
$25.42
$63.54K
Lumpkins David
7 Mar 2017
Director
Buy
2,500
$25.63
$64.08K
Minas Angela A
30 Nov 2016
Director
Buy
5,000
$21.00
$105.00K
Show all 98 transactions →

What was left out

Form 4 filings counted 125
Amendments (4/A) skipped 2
Filings about a different issuer 0
Unreadable filings 0
Joint filings 1
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 6
Transactions with no price 0
Shares from compensation/vesting 12,899,785
Sales filed before the plan box existed 3
History held since 17 Nov 2016