Buesinger Robert F. — SEC Form 4 filings
SEC reporting owner CIK 1488587. 15 Form 4 filings on record with FilingPulse; latest filed 2026-03-31.
Transaction summary — filings shown
Covers all 15 filings on record, filed 2024-02-20 to 2026-03-31. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 1 leg across 1 filing — 83 shares, $7,751 total (shares × price as filed).
- Open-market sales (code S, non-derivative): 5 legs across 5 filings — 11,583 shares, $1,599,784 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 35.
- Largest priced transaction: sale of 3,878 shares @ $144.50 ($560,371) in WESTLAKE CORP, filed 2024-03-18.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| WESTLAKE CORP (WLK) | EVP, PEM Segment Head | 15 | 1 leg · 83 sh · $7,751 | 5 legs · 11,583 sh · $1,599,784 | 35 |
Form 4 filings — Buesinger Robert F.
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-03-31 | 4 | WESTLAKE CORP (WLK) | Sale (S): 4,000 @ $115.25 | EDGAR |
| 2026-02-23 | 4 | WESTLAKE CORP (WLK) | Grant/award (A): 1,301 @ $0 · Tax withholding (F): 326 @ $94.10 · Grant/award (A): 19,351 (derivative) @ $0 · Grant/award (A): 5,281 (derivative) @ $0 | EDGAR |
| 2026-02-19 | 4 | WESTLAKE CORP (WLK) | Option exercise (M): 3,478 @ $0 · Tax withholding (F): 903 @ $98.95 · Option exercise (M): 3,478 (derivative) @ $0 | EDGAR |
| 2025-06-09 | 4 | WESTLAKE CORP (WLK) | Purchase (P): 83 @ $93.39 · Sale (S): 83 @ $72.70 | EDGAR |
| 2025-04-15 | 4 | WESTLAKE CORP (WLK) | Grant/award (A): 17,101 (derivative) @ $0 | EDGAR |
| 2025-02-24 | 4 | WESTLAKE CORP (WLK) | Grant/award (A): 6,839 @ $0 · Tax withholding (F): 2,738 @ $110.54 · Grant/award (A): 13,141 (derivative) @ $0 · Grant/award (A): 4,356 (derivative) @ $0 | EDGAR |
| 2025-02-20 | 4 | WESTLAKE CORP (WLK) | Option exercise (M): 12,923 @ $0 · Tax withholding (F): 3,851 @ $111.46 · Tax withholding (F): 164 @ $112.76 · Option exercise (M): 12,923 (derivative) @ $0 | EDGAR |
| 2024-08-15 | 4 | WESTLAKE CORP (WLK) | Option exercise (M): 7,051 @ $0 · Tax withholding (F): 2,772 @ $145.44 · Option exercise (M): 7,051 (derivative) @ $0 | EDGAR |
| 2024-05-13 | 4 | WESTLAKE CORP (WLK) | Sale (S): 3,500 @ $158.50 | EDGAR |
| 2024-05-08 | 4 | WESTLAKE CORP (WLK) | Option exercise (M): 3,133 @ $122.65 · Disposition to issuer (D): 3,133 @ $157.50 · Option exercise (M): 3,133 (derivative) @ $0 | EDGAR |
| 2024-03-18 | 4 | WESTLAKE CORP (WLK) | Sale (S): 3,878 @ $144.50 | EDGAR |
| 2024-03-14 | 4 | WESTLAKE CORP (WLK) | Sale (S): 122 @ $144.50 | EDGAR |
| 2024-03-11 | 4 | WESTLAKE CORP (WLK) | Option exercise (M): 5,005 @ $86.54 · Option exercise (M): 7,665 @ $108.12 · Disposition to issuer (D): 12,670 @ $142.55 · Option exercise (M): 5,005 (derivative) @ $0 · Option exercise (M): 7,665 (derivative) @ $0 | EDGAR |
| 2024-02-21 | 4 | WESTLAKE CORP (WLK) | Grant/award (A): 8,592 @ $0 · Option exercise (M): 4,283 @ $0 · Tax withholding (F): 4,083 @ $129.92 · Tax withholding (F): 3 @ $135.32 · Tax withholding (F): 399 @ $137.38 · Option exercise (M): 4,283 (derivative) @ $0 | EDGAR |
| 2024-02-20 | 4 | WESTLAKE CORP (WLK) | Grant/award (A): 8,509 (derivative) @ $0 · Grant/award (A): 3,073 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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