SEC Form 4 · accession 0001140361-16-054337
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 18, 2016
Accepted (ET)
Feb 22, 2016 · 4:05 pm EST
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0001262823
Table I — non-derivative securities
No Table I lines on this filing.
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 | $44.42 | Feb 18, 2016 | A | 8,741 | A | — | Feb 18, 2026 | Common Stock | 8,741 | 8,741 | D |
| Restricted Stock UnitsF2,F3 | — | Feb 18, 2016 | A | 2,296 | A | — | — | Common Stock | 2,296 | 2,296 | D |
Explanation of responses
- F1The stock options are exercisable in three installments of 33%, 33%, and 34% on February 18, 2017, 2018 and 2019, respectively.
- F2Each restricted stock unit represents a contingent right to receive one share of Westlake Chemical Corporation common stock.
- F3The restricted stock units will vest 3 years from the date of grant (February 18, 2019).