| Date | Owner | Type | Security | Price | Units | Value | |
|---|---|---|---|---|---|---|---|
| Gerstenberg Eric W CO-CEO | S | Common Stock | |||||
| Robertson Andrea | S | Common Stock | |||||
| McKim Alan S EXEC CHAIR, CTO. | F | Common Stock | |||||
| Geer Charles H. II EVP, Industrial Services | F | Common Stock | |||||
| Underwood Rebecca PRESIDENT & EVP FACILITIES | F | Common Stock |