| Symbol | Company | Owner | Relationship | Date | Transaction | Cost | # Shares | Value ($) | Total Shares | Filing | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TREC | TRECORA RESOURCES | Williamson Mark D | Vice President of Marketing | Jun 16, 2018 | Option Exercise | $13.90 | 599 | 8,326 | 28,906 | Jun 18, 2018, 03:22 PM | |
| TREC | TRECORA RESOURCES | Williamson Mark D | Vice President of Marketing | Feb 28, 2018 | Option Exercise | $11.10 | 713 | 7,914 | 27,044 | Mar 01, 2018, 11:48 AM | |
| TREC | TRECORA RESOURCES | Williamson Mark D | Vice President of Marketing | Feb 09, 2018 | Option Exercise | $12.85 | 665 | 8,545 | 24,828 | Feb 21, 2018, 01:33 PM | |
| TREC | TRECORA RESOURCES | Williamson Mark D | Vice President of Marketing | Jan 17, 2018 | Option Exercise | $13.85 | 110 | 1,524 | 22,760 | Jan 19, 2018, 01:27 PM | |
| TREC | TRECORA RESOURCES | Williamson Mark D | Vice President of Marketing | Jun 16, 2017 | Option Exercise | $11.40 | 983 | 11,206 | 22,509 | Jun 19, 2017, 01:52 PM | |
| TREC | TRECORA RESOURCES | Williamson Mark D | Vice President of Marketing | Jun 02, 2017 | Sale | $10.88 | 6,286 | 68,406 | 24,277 | Jun 06, 2017, 12:04 PM | |
| TREC | TRECORA RESOURCES | Williamson Mark D | Vice President of Marketing | Jun 05, 2017 | Sale | $10.94 | 3,714 | 40,622 | 20,563 | Jun 06, 2017, 12:04 PM | |
| TREC | TRECORA RESOURCES | Williamson Mark D | Vice President of Marketing | Sep 06, 2016 | Option Exercise | $3.68 | 24,011 | 88,401 | 32,733 | Sep 07, 2016, 03:48 PM | |
| ARSD | ARABIAN AMERICAN DEVELOPMENT CO | Williamson Mark D | Vice President of Marketing | Aug 30, 2013 | Sale | $7.96 | 2,235 | 17,791 | 10,000 | Sep 03, 2013, 03:18 PM | |
| ARSD | ARABIAN AMERICAN DEVELOPMENT CO | Williamson Mark D | Vice President of Marketing | Aug 29, 2013 | Sale | $8.10 | 7,765 | 62,917 | 12,235 | Sep 03, 2013, 03:18 PM |
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