| Date | Filer | Title | Filing | Type | Shares Traded | Price | Total Held |
|---|---|---|---|---|---|---|---|
| Feb 23, 2004 | NEMOURS FOUNDATION
|
Ten Percent Owner | Form 4 | Open market or private sale of non-derivative or derivative security | 18,400 | $39.98 | 1,636,278 |
| Mar 12, 2021 | BERKOWITZ BRUCE R
|
Director, Ten Percent Owner | Form 4 | Open market or private sale of non-derivative or derivative security | 18,500 | $50.00 | 21,887,491 |
| Sep 18, 2006 | CORR CHRISTOPHER T
|
Chief Strategy Officer | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 19,012 | -- | 19,012 |
| Feb 17, 2006 | TWOMEY KEVIN M
|
President and COO | Form 4 | Open market or private sale of non-derivative or derivative security | 19,100 | $61.75 | 46,700 |
| Oct 28, 2004 | TWOMEY KEVIN M
|
President, COO & CFO | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 19,251 | $29.00 | 399,245 |
| Oct 28, 2004 | TWOMEY KEVIN M
|
President, COO & CFO | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 19,251 | -- | 98,181 |
| Feb 07, 2011 | Wilson Roderick T
|
President - West Bay Sector | Form 4 | Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) | 19,280 | -- | 43,587 |
| Dec 13, 2017 | FRANK HOWARD S
|
Director | Form 4 | Open market or private purchase of non-derivative or derivative security | 20,000 | $18.98 | 20,000 |
| Dec 06, 2004 | RUMMELL PETER S
|
Director, Chairman & CEO | Form 4 | Open market or private sale of non-derivative or derivative security | 20,000 | $54.75 | 1,375,874 |
| Jul 27, 2006 | CORR CHRISTOPHER T
|
Senior Vice President | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 21,891 | -- | 42,966 |
For recent transactions, including derivative transactions, see our Section 16 SEC filingspage.