X0306 4 2018-02-09 0 0000007039 TRECORA RESOURCES TREC 0001423910 Cook Connie 247 PR 8894 FRED TX 77616 0 1 0 0 Secretary common stock 2018-02-09 4 M 0 2121 A 39361 D restricted stock units 2018-02-09 4 M 0 2121 0 D common stock 2121 134504 D restricted stock units 2018-02-20 4 A 0 12970 0 A common stock 12970 147474 D Vesting of 1/3 of time vested restricted stock units which were granted on 02/10/15 and vest in 3 equal installments beginning on the first anniversary of the grant date. Granted as officer compensation. Converts into common stock on a one-for-one basis. One half of award vests ratably over 3 years beginning with the first anniversary of the grant date. The remaining 50% vests at the end of three years subject to performance criteria. Connie Cook 2018-02-21