Robert F. Buesinger is VP at WESTLAKE CORP (WLK). They have made 27 open-market trades across 1 company since 2011, most recently 2026-03-27.
CIK 0001488587
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $8K since 2025, against 26 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| WLK | 34,482 | $2.2M |
Shares reported on the most recent Form 4, priced at the 2026-03-31 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WLK | SELL | 2026-03-27 | 2026-03-31 | $115.25 | $461K | +2.7% | -1.5% | -36.1% |
| WLK | SELL | 2025-05-27 | 2025-06-09 | $72.70 | $6K | -6.4% | +11.1% | +14.9% |
| WLK | BUY | 2025-04-22 | 2025-06-09 | $93.39 | $8K | -6.4% | +11.1% | +14.9% |
| WLK | SELL | 2024-05-09 | 2024-05-13 | $158.50 | $555K | -0.1% | -2.6% | -9.1% |
| WLK | SELL | 2024-03-15 | 2024-03-18 | $144.50 | $560K | +6.3% | +3.4% | +4.7% |
| WLK | SELL | 2024-03-13 | 2024-03-14 | $144.50 | $18K | +6.0% | +8.2% | +7.9% |
| WLK | SELL | 2023-11-15 | 2023-11-17 | $130.50 | $1.1M | -1.0% | +8.2% | +11.2% |
| WLK | SELL | 2022-08-31 | 2022-09-01 | $98.94 | $99K | -6.0% | -7.6% | +10.1% |
| WLK | SELL | 2022-05-27 | 2022-05-31 | $129.47 | $3.7M | -7.4% | -26.0% | -22.5% |
| WLK | SELL | 2022-03-10 | 2022-03-14 | $117.61 | $5.3M | +7.0% | +2.7% | -2.1% |
| WLK | SELL | 2022-03-09 | 2022-03-10 | $115.55 | $631K | +7.1% | -2.3% | +12.4% |
| WLK | SELL | 2021-05-10 | 2021-05-11 | $105.00 | $525K | -3.0% | -3.1% | -20.8% |
| WLK | SELL | 2021-03-08 | 2021-03-09 | $93.69 | $1.5M | +0.2% | -3.4% | +12.2% |
| WLK | SELL | 2020-11-24 | 2020-11-25 | $77.50 | $710K | +6.1% | +3.0% | +11.9% |
| WLK | SELL | 2018-05-15 | 2018-05-16 | $118.88 | $344K | -2.6% | -9.1% | -19.3% |
| WLK | SELL | 2018-03-05 | 2018-03-06 | $113.04 | $3.9M | +0.6% | -3.9% | +1.2% |
| WLK | SELL | 2017-12-01 | 2017-12-04 | $98.50 | $263K | +4.2% | +11.6% | +17.7% |
| WLK | SELL | 2017-11-17 | 2017-11-20 | $93.82 | $978K | +3.6% | +8.9% | +12.5% |
| WLK | SELL | 2017-03-01 | 2017-03-03 | $66.25 | $1.1M | +2.7% | +0.7% | -4.1% |
| WLK | SELL | 2016-11-10 | 2016-11-14 | $54.42 | $313K | +3.6% | +5.8% | +20.1% |
| WLK | SELL | 2014-05-07 | 2014-05-08 | $77.36 | $145K | -18.5% | -0.6% | -0.6% |
| WLK | SELL | 2014-02-26 | 2014-02-27 | $132.95 | $314K | -18.5% | -0.6% | -0.6% |
| WLK | SELL | 2013-05-08 | 2013-05-10 | $90.97 | $134K | -18.5% | -0.6% | -0.6% |
| WLK | SELL | 2013-03-11 | 2013-03-13 | $93.79 | $212K | -18.5% | -0.6% | -0.6% |
| WLK | SELL | 2012-12-10 | 2012-12-12 | $75.68 | $70K | -18.5% | -0.6% | -0.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.