6-Month Buy/Sell Trend
Buys
Sells
▶
2026-03-04
▼ 1 sell
· $29.3M
| Insider | Title | Type | Shares | Price | $ Value | 10b5-1 | Filed |
|---|---|---|---|---|---|---|---|
| MCKIM ALAN S | EXEC CHAIR, CTO. | ▼ Sell | 100,000 | $293 | $29.3M | Mar 5 |
▶
2026-02-23
▼ 1 sell
· $700K
| Insider | Title | Type | Shares | Price | $ Value | 10b5-1 | Filed |
|---|---|---|---|---|---|---|---|
| GERSTENBERG ERIC W | CO-CEO | ▼ Sell | 2,500 | $280 | $700K | Feb 24 |
▶
2026-02-19
▼ 2 sells
· $28.3M
1 other
⚡ 2 insiders
▶
2026-02-20
▼ 2 sells
· $1.8M
⚡ 2 insiders
▶
2026-02-02
10 other
⚡ 10 insiders
| Insider | Title | Type | Shares | Price | $ Value | 10b5-1 | Filed |
|---|---|---|---|---|---|---|---|
| Battles Michael Louis | CO-CEO | F | 5,205 | $260 | $1.4M | Feb 3 | |
| GERSTENBERG ERIC W | CO-CEO | F | 4,934 | $260 | $1.3M | Feb 3 | |
| CURTIS GEORGE L | EXEC. VICE PRESIDENT (CHESI) | F | 249 | $260 | $65K | Feb 3 | |
| Weber Brian P | EVP (CHESI) | F | 1,394 | $260 | $362K | Feb 3 | |
| Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | F | 567 | $260 | $147K | Feb 3 | |
| Gabriel Sharon M. | EVP/CIO (CHESI) | F | 508 | $260 | $132K | Feb 3 | |
| Harrison Robert W. | EVP, EHS | F | 184 | $260 | $48K | Feb 3 | |
| Underwood Rebecca | PRESIDENT & EVP FACILITIES | F | 425 | $260 | $110K | Feb 3 | |
| Diderich Jeroen | EVP&President of Sales&Service | F | 105 | $260 | $27K | Feb 3 | |
| Geer Charles H. II | EVP, Industrial Services | F | 197 | $260 | $51K | Feb 3 |
▶
2026-02-01
18 other
⚡ 9 insiders
| Insider | Title | Type | Shares | Price | $ Value | 10b5-1 | Filed |
|---|---|---|---|---|---|---|---|
| Battles Michael Louis | CO-CEO | A | 10,290 | $0 | $0 | Feb 3 | |
| Battles Michael Louis | CO-CEO | A | 10,690 | $0 | $0 | Feb 3 | |
| GERSTENBERG ERIC W | CO-CEO | A | 10,290 | $0 | $0 | Feb 3 | |
| GERSTENBERG ERIC W | CO-CEO | A | 10,690 | $0 | $0 | Feb 3 | |
| Weber Brian P | EVP (CHESI) | A | 3,166 | $0 | $0 | Feb 3 | |
| Weber Brian P | EVP (CHESI) | A | 1,056 | $0 | $0 | Feb 3 | |
| Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | A | 3,066 | $0 | $0 | Feb 3 | |
| Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | A | 1,022 | $0 | $0 | Feb 3 | |
| Gabriel Sharon M. | EVP/CIO (CHESI) | A | 2,073 | $0 | $0 | Feb 3 | |
| Gabriel Sharon M. | EVP/CIO (CHESI) | A | 566 | $0 | $0 | Feb 3 | |
| Harrison Robert W. | EVP, EHS | A | 1,003 | $0 | $0 | Feb 3 | |
| Harrison Robert W. | EVP, EHS | A | 430 | $0 | $0 | Feb 3 | |
| Underwood Rebecca | PRESIDENT & EVP FACILITIES | A | 2,513 | $0 | $0 | Feb 3 | |
| Underwood Rebecca | PRESIDENT & EVP FACILITIES | A | 838 | $0 | $0 | Feb 3 | |
| Diderich Jeroen | EVP&President of Sales&Service | A | 3,141 | $0 | $0 | Feb 3 | |
| Diderich Jeroen | EVP&President of Sales&Service | A | 1,047 | $0 | $0 | Feb 3 | |
| Geer Charles H. II | EVP, Industrial Services | A | 1,843 | $0 | $0 | Feb 3 | |
| Geer Charles H. II | EVP, Industrial Services | A | 503 | $0 | $0 | Feb 3 |
▶
2026-01-02
1 other
| Insider | Title | Type | Shares | Price | $ Value | 10b5-1 | Filed |
|---|---|---|---|---|---|---|---|
| Gabriel Sharon M. | EVP/CIO (CHESI) | F | 525 | $234 | $123K | Jan 5 |
▶
2025-12-17
1 other
| Insider | Title | Type | Shares | Price | $ Value | 10b5-1 | Filed |
|---|---|---|---|---|---|---|---|
| Welch John R. | — | G | 415 | $0 | $0 | Dec 29 |
▶
2025-12-16
▼ 1 sell
· $145K
| Insider | Title | Type | Shares | Price | $ Value | 10b5-1 | Filed |
|---|---|---|---|---|---|---|---|
| GERSTENBERG ERIC W | CO-CEO | ▼ Sell | 601 | $241 | $145K | Dec 17 |
▶
2025-12-15
3 other
⚡ 3 insiders
▶
2025-12-09
1 other
| Insider | Title | Type | Shares | Price | $ Value | 10b5-1 | Filed |
|---|---|---|---|---|---|---|---|
| CURTIS GEORGE L | EXEC. VICE PRESIDENT (CHESI) | G | 1,000 | $0 | $0 | Dec 11 |
▶
2025-12-01
1 other
| Insider | Title | Type | Shares | Price | $ Value | 10b5-1 | Filed |
|---|---|---|---|---|---|---|---|
| Harrison Robert W. | EVP, EHS | F | 122 | $229 | $28K | Dec 3 |
▶
2025-11-13
1 other
| Insider | Title | Type | Shares | Price | $ Value | 10b5-1 | Filed |
|---|---|---|---|---|---|---|---|
| States Lauren | — | G | 245 | $0 | $0 | Nov 14 |
▶
2025-11-01
1 other
| Insider | Title | Type | Shares | Price | $ Value | 10b5-1 | Filed |
|---|---|---|---|---|---|---|---|
| Geer Charles H. II | EVP, Industrial Services | F | 294 | $211 | $62K | Nov 4 |