SEC Form 4 · accession 0001140361-18-012224
WESTLAKE CORP · WLK
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Robert F. Buesinger
Officer — EVP, Vinyl Products
Period of report
Mar 5, 2018
Accepted (ET)
Mar 6, 2018 · 2:50 pm EST
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0001262823
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Mar 5, 2018 | M | 6,608 | $68.09 | A | 14,731 | D | |
| Common Stock | Mar 5, 2018 | M | 4,446 | $44.42 | A | 19,177 | D | |
| Common Stock | Mar 5, 2018 | M | 4,261 | $61.865 | A | 23,438 | D | |
| Common StockF4 | Mar 5, 2018 | S | 15,315 | $113.05 | D | 8,123 | D | |
| Common Stock | Mar 5, 2018 | S | 4,034 | $113.00 | D | 4,089 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Employee Option (right to buy)F1 | $68.09 | Mar 5, 2018 | M | 6,608 | D | — | Feb 20, 2025 | Common Stock | 6,608 | 0 | D |
| Employee Option (right to buy)F2 | $44.42 | Mar 5, 2018 | M | 4,446 | D | — | Feb 18, 2026 | Common Stock | 4,446 | 4,581 | D |
| Employee Option (right to buy)F3 | $61.865 | Mar 5, 2018 | M | 4,261 | D | — | Feb 17, 2027 | Common Stock | 4,261 | 8,652 | D |
Explanation of responses
- F1The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2016, 2017 and 2018, respectively.
- F2The stock options are excercisable in three installments of 33%, 33% and 34% on February 18, 2017, 2018 and 2019, respectively.
- F3The stock options are excercisable in three installments of 33%, 33% and 34% on February 17, 2018, 2019 and 2020, respectively.
- F4The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $113.00 to $113.10, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.