WLK WESTLAKE CORP
NYSE · SEC CIK 1262823 · EDGAR
- Bought, last 12 months
- $0 0 purchases by 0 insiders
- Sold, last 12 months
- $10.19M 5 sales by 3 insiders
- Filings on record
- 282 since 2021-08-12, latest 2026-09-01 07:14
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| Chao Albert | Executive COB, Dir | — | $6.13M |
| Bender Mark Steven | EVP, CFO | — | $3.60M |
| Buesinger Robert F. | EVP, PEM Segment Head | — | $461.0K |
| Szwejbka Scott Thomas | SVP, HIP Segment Head | — | — |
| Holy Jeffrey Adam | VP, CAO | — | — |
| Chao Catherine T. | Dir | — | — |
| Sabat Carolyn Chao | Dir | — | — |
| Chao John Tsung-chen | Dir | — | — |
| Chao David Tsung-Hung | Dir | — | — |
| Ederington L. Benjamin | EVP, Legal, External Affairs | — | — |
Transactions 348
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2023-05-22 | 2023-05-19 | WLK | Zoeller Johnathan Stevan | VP, CAO | M - OptEx | $86.54 | +1,963 | 4,079 | +93% | +$169.9K |
| D | 2023-05-10 | 2023-05-08 | WLK | Bender Mark Steven | EVP, CFO | M - OptEx | $65.81 | +1,084 | 45.5K | +2% | +$71.3K |
| D | 2023-05-10 | 2023-05-08 | WLK | Bender Mark Steven | EVP, CFO | D - Sale to Iss | $120.03 | -1,084 | 44.4K | -2% | -$130.1K |
| A | 2023-03-15 | 2023-02-17 | WLK | Zoeller Johnathan Stevan | VP, CAO | A - Grant | $0.00 | +1,446 | 2,493 | +138% | $0 |
| MA | 2023-03-15 | 2023-03-13 | WLK | Zoeller Johnathan Stevan | VP, CAO | F - Tax | $104.47 | -377 | 2,135 | -15% | -$39.4K |
| A | 2023-03-15 | 2023-02-17 | WLK | Chao James | COB, Dir, 10% | A - Grant | $0.00 | +37.1K | 136.3K | +37% | $0 |
| MA | 2023-03-15 | 2023-03-13 | WLK | Chao James | COB, Dir, 10% | F - Tax | $104.36 | -15.6K | 121.4K | -11% | -$1.63M |
| MA | 2023-03-15 | 2023-03-13 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | F - Tax | $104.37 | -4,752 | 21.0K | -18% | -$496.0K |
| A | 2023-03-15 | 2023-02-17 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | A - Grant | $0.00 | +11.3K | 25.7K | +78% | $0 |
| A | 2023-03-15 | 2023-02-17 | WLK | Chao Albert | Pres, CEO, Dir, 10% | A - Grant | $0.00 | +52.3K | 542.1K | +11% | $0 |
| MA | 2023-03-15 | 2023-03-13 | WLK | Chao Albert | Pres, CEO, Dir, 10% | F - Tax | $104.34 | -22.0K | 521.3K | -4% | -$2.29M |
| A | 2023-03-15 | 2023-02-17 | WLK | Ederington L. Benjamin | EVP, GC, CAO, Sec | A - Grant | $0.00 | +11.0K | 52.6K | +27% | $0 |
| MA | 2023-03-15 | 2023-03-13 | WLK | Ederington L. Benjamin | EVP, GC, CAO, Sec | F - Tax | $104.37 | -4,636 | 47.9K | -9% | -$483.9K |
| MA | 2023-03-15 | 2023-03-13 | WLK | Bender Mark Steven | EVP, CFO | F - Tax | $104.34 | -6,032 | 44.7K | -12% | -$629.4K |
| A | 2023-03-15 | 2023-02-17 | WLK | Bender Mark Steven | EVP, CFO | A - Grant | $0.00 | +14.3K | 50.4K | +40% | $0 |
| A | 2023-03-15 | 2023-02-17 | WLK | Kearns Roger L. | COO, EVP, PEM | A - Grant | $0.00 | +14.1K | 45.8K | +45% | $0 |
| MA | 2023-03-15 | 2023-03-13 | WLK | Kearns Roger L. | COO, EVP, PEM | F - Tax | $104.43 | -5,936 | 40.1K | -13% | -$619.9K |
| MA | 2023-03-15 | 2023-03-13 | WLK | Janssens Thomas J. | SVP, Ops - PEM, Corp Logistic | F - Tax | $104.40 | -972 | 9,531 | -9% | -$101.5K |
| A | 2023-03-15 | 2023-02-17 | WLK | Janssens Thomas J. | SVP, Ops - PEM, Corp Logistic | A - Grant | $0.00 | +3,086 | 10.5K | +42% | $0 |
| DM | 2023-02-28 | 2023-02-27 | WLK | Zoeller Johnathan Stevan | VP, CAO | M - OptEx | $71.21 | +1,689 | 4,182 | +68% | +$120.3K |
| D | 2023-02-28 | 2023-02-27 | WLK | Zoeller Johnathan Stevan | VP, CAO | D - Sale to Iss | $120.65 | -1,689 | 2,493 | -40% | -$203.8K |
| D | 2023-02-28 | 2023-02-27 | WLK | Bender Mark Steven | EVP, CFO | M - OptEx | $65.81 | +3,000 | 53.4K | +6% | +$197.4K |
| D | 2023-02-28 | 2023-02-27 | WLK | Bender Mark Steven | EVP, CFO | D - Sale to Iss | $120.50 | -3,000 | 50.4K | -6% | -$361.5K |
| 2023-02-17 | 2023-02-17 | WLK | Chao James | COB, Dir, 10% | A - Grant | $0.00 | +37.1K | 136.3K | +37% | $0 | |
| 2023-02-17 | 2023-02-17 | WLK | Chao Albert | Pres, CEO, Dir, 10% | A - Grant | $0.00 | +52.3K | 542.1K | +11% | $0 | |
| 2023-02-17 | 2023-02-17 | WLK | Kearns Roger L. | COO, EVP, PEM | A - Grant | $0.00 | +14.1K | 45.8K | +45% | $0 | |
| 2023-02-17 | 2023-02-17 | WLK | Ederington L. Benjamin | EVP, GC, CAO, Sec | A - Grant | $0.00 | +11.0K | 52.6K | +27% | $0 | |
| 2023-02-17 | 2023-02-17 | WLK | Janssens Thomas J. | SVP, Ops - PEM, Corp Logistic | A - Grant | $0.00 | +3,086 | 10.5K | +42% | $0 | |
| 2023-02-17 | 2023-02-17 | WLK | Zoeller Johnathan Stevan | VP, CAO | A - Grant | $0.00 | +1,446 | 2,493 | +138% | $0 | |
| 2023-02-17 | 2023-02-17 | WLK | Bender Mark Steven | EVP, CFO | A - Grant | $0.00 | +14.3K | 50.4K | +40% | $0 | |
| 2023-02-17 | 2023-02-17 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | A - Grant | $0.00 | +11.3K | 25.7K | +78% | $0 | |
| DM | 2023-02-16 | 2023-02-15 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | F - Tax | $121.87 | -1,417 | 14.4K | -9% | -$172.7K |
| D | 2023-02-16 | 2023-02-14 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | M - OptEx | — | +5,632 | 15.8K | +55% | — |
| DM | 2023-02-16 | 2023-02-15 | WLK | Chao James | COB, Dir, 10% | F - Tax | $121.87 | -6,159 | 99.1K | -6% | -$750.6K |
| D | 2023-02-16 | 2023-02-14 | WLK | Chao James | COB, Dir, 10% | M - OptEx | — | +18.5K | 105.3K | +21% | — |
| DM | 2023-02-16 | 2023-02-15 | WLK | Janssens Thomas J. | SVP, Ops - PEM, Corp Logistic | F - Tax | $121.87 | -418 | 7,422 | -5% | -$50.9K |
| D | 2023-02-16 | 2023-02-14 | WLK | Janssens Thomas J. | SVP, Ops - PEM, Corp Logistic | M - OptEx | — | +1,538 | 7,835 | +24% | — |
| D | 2023-02-16 | 2023-02-14 | WLK | Bender Mark Steven | EVP, CFO | M - OptEx | — | +7,150 | 37.9K | +23% | — |
| DM | 2023-02-16 | 2023-02-15 | WLK | Bender Mark Steven | EVP, CFO | F - Tax | $121.87 | -1,785 | 36.1K | -5% | -$217.5K |
| DM | 2023-02-16 | 2023-02-15 | WLK | Kearns Roger L. | COO, EVP, PEM | F - Tax | $121.87 | -1,754 | 31.7K | -5% | -$213.8K |
| D | 2023-02-16 | 2023-02-14 | WLK | Kearns Roger L. | COO, EVP, PEM | M - OptEx | — | +7,036 | 33.4K | +27% | — |
| D | 2023-02-16 | 2023-02-14 | WLK | Zoeller Johnathan Stevan | VP, CAO | M - OptEx | — | +721 | 1,264 | +133% | — |
| DM | 2023-02-16 | 2023-02-15 | WLK | Zoeller Johnathan Stevan | VP, CAO | F - Tax | $121.87 | -217 | 1,047 | -17% | -$26.4K |
| DM | 2023-02-16 | 2023-02-15 | WLK | Chao Albert | Pres, CEO, Dir, 10% | F - Tax | $121.87 | -9,159 | 489.9K | -2% | -$1.12M |
| D | 2023-02-16 | 2023-02-14 | WLK | Chao Albert | Pres, CEO, Dir, 10% | M - OptEx | — | +26.0K | 499.0K | +6% | — |
| DM | 2023-02-16 | 2023-02-15 | WLK | Ederington L. Benjamin | EVP, GC, CAO, Sec | F - Tax | $121.87 | -1,383 | 41.5K | -3% | -$168.5K |
| D | 2023-02-16 | 2023-02-14 | WLK | Ederington L. Benjamin | EVP, GC, CAO, Sec | M - OptEx | — | +5,495 | 42.9K | +15% | — |
| 2022-09-01 | 2022-08-31 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | S - Sale | $98.94 | -1,000 | 10.2K | -9% | -$98.9K | |
| 2022-08-29 | 2022-08-26 | WLK | Zoeller Johnathan Stevan | VP, CAO | S - Sale | $107.08 | -542 | 543 | -50% | -$58.0K | |
| 2022-08-24 | 2022-08-23 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | G - Gift | $0.00 | -572 | 11.2K | -5% | $0 | |
| D | 2022-08-15 | 2022-08-13 | WLK | MCCOLLUM MARK A | Dir | M - OptEx | — | +1,763 | 5,946 | +42% | — |
| D | 2022-08-15 | 2022-08-13 | WLK | Graff Michael J | Dir | M - OptEx | — | +1,763 | 17.4K | +11% | — |
| D | 2022-08-15 | 2022-08-13 | WLK | NORTHCUTT R BRUCE | Dir | M - OptEx | — | +1,763 | 17.5K | +11% | — |
| D | 2022-08-15 | 2022-08-13 | WLK | Haas Marius | Dir | M - OptEx | — | +1,763 | 9,049 | +24% | — |
| D | 2022-08-15 | 2022-08-13 | WLK | Jenkins Dorothy C | Dir, 10% | M - OptEx | — | +1,763 | 73.8K | +2% | — |
| D | 2022-08-15 | 2022-08-13 | WLK | Lubel Kimberly S | Dir | M - OptEx | — | +1,763 | 7,943 | +29% | — |
| D | 2022-08-15 | 2022-08-13 | WLK | Sheets Jeffrey Wayne | Dir | M - OptEx | — | +1,763 | 9,049 | +24% | — |
| D | 2022-08-15 | 2022-08-13 | WLK | Chao David Tsung-Hung | Dir, 10% | M - OptEx | — | +1,763 | 9,702 | +22% | — |
| 2022-06-02 | 2022-06-02 | WLK | Chao James | COB, Dir, 10% | G - Gift | $0.00 | -38.8K | 86.8K | -31% | $0 | |
| DM | 2022-05-31 | 2022-05-27 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | M - OptEx | $100.61 | +14.4K | 21.4K | +208% | +$1.45M |
| D | 2022-05-31 | 2022-05-27 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | S - Sale+OE | $129.47 | -14.4K | 11.8K | -55% | -$1.87M |
| D | 2022-05-23 | 2022-05-19 | WLK | Chao Albert | Pres, CEO, Dir, 10% | M - OptEx | $45.70 | +37.9K | 510.9K | +8% | +$1.73M |
| DM | 2022-05-23 | 2022-05-19 | WLK | Chao Albert | Pres, CEO, Dir, 10% | S - Sale+OE | $130.38 | -37.9K | 498.8K | -7% | -$4.94M |
| D | 2022-05-18 | 2022-05-17 | WLK | Kearns Roger L. | COO, EVP - PEM | M - OptEx | $79.83 | +8,388 | 34.8K | +32% | +$669.6K |
| D | 2022-05-18 | 2022-05-17 | WLK | Kearns Roger L. | COO, EVP - PEM | S - Sale+OE | $136.24 | -8,388 | 26.4K | -24% | -$1.14M |
| D | 2022-05-06 | 2022-05-05 | WLK | Ederington L. Benjamin | EVP, GC, CAO, Sec | M - OptEx | $44.42 | +12.6K | 50.0K | +34% | +$558.3K |
| DM | 2022-05-06 | 2022-05-05 | WLK | Ederington L. Benjamin | EVP, GC, CAO, Sec | S - Sale+OE | $139.81 | -12.6K | 37.4K | -25% | -$1.76M |
| DM | 2022-04-01 | 2022-03-31 | WLK | Bender Mark Steven | EVP, CFO | S - Sale+OE | $124.35 | -6,021 | 30.8K | -16% | -$748.7K |
| DM | 2022-04-01 | 2022-03-31 | WLK | Bender Mark Steven | EVP, CFO | M - OptEx | $70.61 | +6,021 | 32.8K | +22% | +$425.1K |
| DM | 2022-03-31 | 2022-03-30 | WLK | Bender Mark Steven | EVP, CFO | S - Sale+OE | $124.81 | -6,000 | 33.8K | -15% | -$748.8K |
| DM | 2022-03-31 | 2022-03-30 | WLK | Bender Mark Steven | EVP, CFO | M - OptEx | $72.82 | +6,000 | 33.7K | +22% | +$436.9K |
| D | 2022-03-30 | 2022-03-29 | WLK | Bender Mark Steven | EVP, CFO | S - Sale+OE | $122.44 | -4,000 | 30.7K | -12% | -$489.8K |
| DM | 2022-03-30 | 2022-03-29 | WLK | Bender Mark Steven | EVP, CFO | M - OptEx | $72.82 | +4,000 | 32.7K | +14% | +$291.3K |
| DM | 2022-03-28 | 2022-03-25 | WLK | Kearns Roger L. | COO, EVP - PEM | S - Sale+OE | $126.00 | -10.3K | 29.2K | -26% | -$1.30M |
| DM | 2022-03-28 | 2022-03-25 | WLK | Kearns Roger L. | COO, EVP - PEM | M - OptEx | $83.86 | +10.3K | 36.7K | +39% | +$866.5K |
| DM | 2022-03-28 | 2022-03-25 | WLK | Bender Mark Steven | EVP, CFO | S - Sale+OE | $125.34 | -8,000 | 33.7K | -19% | -$1.00M |
| DM | 2022-03-28 | 2022-03-25 | WLK | Bender Mark Steven | EVP, CFO | M - OptEx | $72.82 | +8,000 | 34.7K | +30% | +$582.6K |
| DM | 2022-03-25 | 2021-03-24+ | WLK | Bender Mark Steven | EVP, CFO | M - OptEx | $72.82 | +8,000 | 38.7K | +26% | +$582.6K |
| D | 2022-03-25 | 2022-03-24 | WLK | Bender Mark Steven | EVP, CFO | S - Sale+OE | $125.38 | -8,000 | 30.7K | -21% | -$1.00M |
| 2022-03-25 | 2022-03-24 | WLK | Kearns Roger L. | COO, EVP - PEM | G - Gift | $0.00 | -2,000 | 26.4K | -7% | $0 | |
| DM | 2022-03-24 | 2021-03-23+ | WLK | Bender Mark Steven | EVP, CFO | M - OptEx | $72.82 | +6,000 | 33.7K | +22% | +$436.9K |
| DM | 2022-03-24 | 2022-03-23 | WLK | Bender Mark Steven | EVP, CFO | S - Sale+OE | $125.17 | -6,000 | 30.7K | -16% | -$751.0K |
| 2022-03-16 | 2022-03-15 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | G - Gift | $0.00 | -500 | 11.8K | -4% | $0 | |
| MA | 2022-03-15 | 2022-03-14 | WLK | Kearns Roger L. | COO, EVP - PEM | F - Tax | $118.51 | -2,180 | 28.4K | -7% | -$258.4K |
| A | 2022-03-15 | 2022-02-18 | WLK | Kearns Roger L. | COO, EVP - PEM | A - Grant | $0.00 | +5,491 | 30.6K | +22% | $0 |
| A | 2022-03-15 | 2022-03-14 | WLK | Chao Albert | Pres, CEO, Dir, 10% | F - Tax | $118.51 | -12.1K | 473.0K | -3% | -$1.44M |
| A | 2022-03-15 | 2022-02-18 | WLK | Chao Albert | Pres, CEO, Dir, 10% | A - Grant | $0.00 | +30.6K | 485.1K | +7% | $0 |
| A | 2022-03-15 | 2022-03-14 | WLK | Chao James | COB, Dir, 10% | F - Tax | $118.51 | -9,710 | 125.6K | -7% | -$1.15M |
| A | 2022-03-15 | 2022-02-18 | WLK | Chao James | COB, Dir, 10% | A - Grant | $0.00 | +24.5K | 135.3K | +22% | $0 |
| M | 2022-03-15 | 2022-03-14 | WLK | Janssens Thomas J. | SVP, Ops-PEM, Corp Log | F - Tax | $118.51 | -468 | 6,297 | -7% | -$55.5K |
| A | 2022-03-15 | 2022-03-14 | WLK | Bender Mark Steven | EVP, CFO | F - Tax | $118.51 | -2,810 | 30.7K | -8% | -$333.0K |
| A | 2022-03-15 | 2022-02-18 | WLK | Bender Mark Steven | EVP, CFO | A - Grant | $0.00 | +7,922 | 33.5K | +31% | $0 |
| A | 2022-03-15 | 2022-02-18 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | A - Grant | $0.00 | +6,446 | 17.6K | +58% | $0 |
| MA | 2022-03-15 | 2022-03-14 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | F - Tax | $118.51 | -2,559 | 12.3K | -17% | -$303.3K |
| MA | 2022-03-15 | 2022-03-14 | WLK | Ederington L. Benjamin | EVP, GC, CAO, Sec | F - Tax | $118.51 | -2,510 | 37.4K | -6% | -$297.5K |
| A | 2022-03-15 | 2022-02-18 | WLK | Ederington L. Benjamin | EVP, GC, CAO, Sec | A - Grant | $0.00 | +6,323 | 39.9K | +19% | $0 |
| A | 2022-03-15 | 2022-03-14 | WLK | Zoeller Johnathan Stevan | VP, CAO | F - Tax | $118.51 | -71 | 1,085 | -6% | -$8,414 |
| A | 2022-03-15 | 2022-02-18 | WLK | Zoeller Johnathan Stevan | VP, CAO | A - Grant | $0.00 | +285 | 1,156 | +33% | $0 |
| DM | 2022-03-14 | 2022-03-10 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | M - OptEx | $74.94 | +22.6K | 29.5K | +323% | +$1.69M |
| D | 2022-03-14 | 2022-03-10 | WLK | Buesinger Robert F. | EVP, HIP, IT, Digital | S - Sale+OE | $117.61 | -22.6K | 14.8K | -60% | -$2.65M |
Purchase Sale Sale after option exercise All abbreviations