SEC Form 4 · accession 0001140361-16-053917
WESTLAKE CORP · WLK
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Michael J. Mattina
Officer — Sr. VP, Polyethylene
Period of report
Feb 15, 2016
Accepted (ET)
Feb 18, 2016 · 4:05 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 StockF1 | Feb 15, 2016 | M | 892 | — | A | 8,802 | D | |
| Common Stock | Feb 17, 2016 | F | 296 | $43.52 | D | 8,506 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitsF1,F2 | — | Feb 15, 2016 | M | 892 | D | — | — | Common Stock | 892 | 0 | D |
Explanation of responses
- F1Restricted stock units convert into Issuer's common stock on a one-for-one basis.
- F2On February 15, 2013, the reporting person was granted 892 restricted stock units vesting on the third anniversary of the grant date.