Insider trading

Period: 120 months Stock: WLK + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

117 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

117 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

117 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

117 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
117 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
117 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

117 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
27 Mar 2020
TTWFGP LLC 10% owner · indirect
Bought 4×
$6.25M 160,000 at 39.08
0.3%
First buy on file
26 Mar 2020
TTWFGP LLC 10% owner · indirect
Bought 3×
$5.95M 145,000 at 41.00
0.3%
First buy on file
25 Mar 2020
TTWFGP LLC 10% owner · indirect
Bought 6×
$5.30M 130,000 at 40.77
0.3%
First buy on file
24 Mar 2020
TTWFGP LLC 10% owner · indirect
Bought 4×
$5.30M 145,000 at 36.53
0.3%
First buy on file
19 Mar 2020
TTWFGP LLC 10% owner · indirect
Bought 4×
$3.85M 101,664 at 37.87
0.2%
First buy on file
18 Mar 2020
TTWFGP LLC 10% owner · indirect
Bought 5×
$7.55M 228,336 at 33.04
0.5%
First buy on file
17 Mar 2020
TTWFGP LLC 10% owner · indirect
Bought 6×
$5.49M 165,000 at 33.25
0.4%
First buy on file
16 Mar 2020
TTWFGP LLC 10% owner · indirect
Bought 3×
$5.03M 160,000 at 31.42
0.3%
First buy on file
16 Mar 2020
Kearns Roger L. EVP, Vinyls Chemicals
Bought
$149.45K 5,000 at 29.89
54.2%
First buy on file
13 Mar 2020
TTWFGP LLC 10% owner · indirect
Bought 2×
$5.27M 160,000 at 32.94
0.3%
First buy on file
21 Feb 2020
Chao Albert President & CEO
Sold, plan not stated
$3.22M 51,592 at 62.42
12.2%
8 Nov 2019
Mangieri George J SVP & Chief Accounting Officer
Sold, plan not stated
$118.80K 1,583 at 75.05
50.0%
Sold half or more
20 Aug 2019
Sold, plan not stated
$24.30K 390 at 62.30
0.6%
19 Mar 2019
RILEY H JOHN JR Director
Sold, plan not stated
$232.62K 3,327 at 69.92
12.8%
16 Nov 2018
Chao Albert President & CEO
Sold, plan not stated 2×
$1.76M 24,509 at 71.75
7.0%
15 Nov 2018
Chao Albert President & CEO
Sold, plan not stated 3×
$1.74M 24,509 at 71.20
7.1%
14 Nov 2018
Chao Albert President & CEO
Sold, plan not stated 3×
$1.76M 24,621 at 71.43
7.3%
13 Nov 2018
Chao Albert President & CEO
Sold, plan not stated 3×
$1.08M 15,000 at 71.72
4.7%
12 Nov 2018
Chao Albert President & CEO
Sold, plan not stated 2×
$1.86M 25,000 at 74.52
7.8%
24 May 2018
Chao James Chairman
Sold, plan not stated
$4.02M 33,305 at 120.69
39.3%
21 May 2018
Bender Mark Steven EVP and CFO
Sold, plan not stated 3×
$1.48M 12,066 at 122.83
43.3%
15 May 2018
Buesinger Robert F. EVP, Vinyl Products
Sold, plan not stated
$172.01K 1,447 at 118.88
35.4%
11 May 2018
Bender Mark Steven EVP and CFO
Sold, plan not stated
$2.76M 23,506 at 117.33
59.8%
Sold half or more
10 May 2018
Sold, plan not stated
$6.08K 52 at 117.01
0.1%
9 Mar 2018
Kenner Andrew SVP - Chemical Manufacturing
Sold, plan not stated
$723.36K 6,028 at 120.00
34.5%
5 Mar 2018
Kenner Andrew SVP - Chemical Manufacturing
Sold, plan not stated
$2.69M 24,318 at 110.61
63.4%
Sold half or more
5 Mar 2018
Buesinger Robert F. EVP, Vinyl Products
Sold, plan not stated 2×
$2.19M 19,349 at 113.04
82.6%
Sold half or more
5 Mar 2018
Mangieri George J SVP & Chief Accounting Officer
Sold, plan not stated
$245.08K 2,161 at 113.41
50.0%
Sold half or more
28 Feb 2018
Mangieri George J SVP & Chief Accounting Officer
Sold, plan not stated
$482.14K 4,335 at 111.22
50.1%
Sold half or more
27 Feb 2018
BLAKELY ROBERT T Director
Sold, plan not stated
$448.22K 4,038 at 111.00
34.5%
26 Feb 2018
Teel Lawrence E. EVP, Olefins
Sold, plan not stated
$1.05M 9,351 at 111.86
81.5%
Sold half or more
26 Feb 2018
Bender Mark Steven EVP and CFO
Sold, plan not stated 2×
$558.47K 5,000 at 111.69
24.0%
22 Feb 2018
LUKENS MAX L Director
Sold, plan not stated 2×
$1.95M 17,558 at 110.93
84.3%
Sold half or more
22 Feb 2018
Ederington L. Benjamin SVP, GC, CAO and Secretary
Sold, plan not stated
$773.67K 6,942 at 111.45
36.6%
22 Feb 2018
Bender Mark Steven EVP and CFO
Sold, plan not stated 2×
$665.15K 6,000 at 110.86
22.4%
4 Dec 2017
Bender Mark Steven EVP and CFO
Sold, plan not stated
$635.90K 6,500 at 97.83
21.3%
1 Dec 2017
Buesinger Robert F. EVP, Vinyls Products
Sold, plan not stated
$263.39K 2,674 at 98.50
28.7%
29 Nov 2017
Chao Albert President & CEO
Sold, plan not stated
$1.60M 16,844 at 95.25
5.8%
28 Nov 2017
Chao Albert President & CEO
Sold, plan not stated 2×
$2.36M 25,000 at 94.56
8.4%
27 Nov 2017
Chao Albert President & CEO
Sold, plan not stated 2×
$2.35M 25,000 at 93.96
8.4%
24 Nov 2017
Chao James Chairman
Sold, plan not stated
$6.25M 66,026 at 94.61
35.7%
24 Nov 2017
Chao Albert President & CEO
Sold, plan not stated
$1.89M 20,000 at 94.58
6.8%
22 Nov 2017
Chao Albert President & CEO
Sold, plan not stated 2×
$2.37M 25,000 at 94.90
8.4%
22 Nov 2017
Chao James Chairman
Sold, plan not stated
$962.41K 10,109 at 95.20
7.8%
21 Nov 2017
Chao Albert President & CEO
Sold, plan not stated
$2.36M 25,000 at 94.34
8.4%
21 Nov 2017
Bender Mark Steven EVP and CFO
Sold, plan not stated
$1.92M 20,382 at 94.27
45.9%
17 Nov 2017
Buesinger Robert F. EVP, Vinyls Products
Sold, plan not stated
$489.20K 5,214 at 93.82
35.9%
14 Nov 2017
BLAKELY ROBERT T Director
Sold, plan not stated
$403.19K 4,367 at 92.33
27.2%
13 Nov 2017
Bender Mark Steven EVP and CFO
Sold, plan not stated 2×
$2.80M 29,804 at 94.02
40.1%
13 Nov 2017
Mangieri George J SVP & Chief Accounting Officer
Sold, plan not stated 2×
$1.26M 13,381 at 94.44
78.5%
Sold half or more
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