Buesinger Robert F. (CIK 1488587) reported 12 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-03-31). Recent activity: Sell WLK (4,000 shares), Buy WLK (1,301 shares), Sell WLK (326 shares), Buy WLK (3,478 shares), Sell WLK (903 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-31 | WESTLAKE CORP (WLK) | EVP, PEM Segment Head | Sell | 4,000 | $461,000 |
| 2026-02-23 | WESTLAKE CORP (WLK) | EVP, PEM Segment Head | Buy | 1,301 | $0 |
| 2026-02-23 | WESTLAKE CORP (WLK) | EVP, PEM Segment Head | Sell | 326 | $30,677 |
| 2026-02-19 | WESTLAKE CORP (WLK) | EVP, PEM Segment Head | Buy | 3,478 | $0 |
| 2026-02-19 | WESTLAKE CORP (WLK) | EVP, PEM Segment Head | Sell | 903 | $89,352 |
| 2025-06-09 | WESTLAKE CORP (WLK) | EVP, PEM Segment Head | Buy | 83 | $7,751 |
| 2025-06-09 | WESTLAKE CORP (WLK) | EVP, PEM Segment Head | Sell | 83 | $6,034 |
| 2025-02-24 | WESTLAKE CORP (WLK) | EVP, HIP, IT & Digital | Buy | 6,839 | $0 |
| 2025-02-24 | WESTLAKE CORP (WLK) | EVP, HIP, IT & Digital | Sell | 2,738 | $302,659 |
| 2025-02-20 | WESTLAKE CORP (WLK) | EVP, HIP, IT & Digital | Buy | 12,923 | $0 |
| 2025-02-20 | WESTLAKE CORP (WLK) | EVP, HIP, IT & Digital | Sell | 3,851 | $429,232 |
| 2025-02-20 | WESTLAKE CORP (WLK) | EVP, HIP, IT & Digital | Sell | 164 | $18,493 |
Source: SEC Form 4 filings · as of 2026-03-31