| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Aug 30, 2018 | Director, Chairman and CEO | Form 4 | Bona fide gift | 25,000 | -- | 55,551 | |
| Aug 30, 2018 | Director, Chairman and CEO | Form 4 | Bona fide gift | 25,000 | -- | 55,549 | |
| Mar 04, 2008 | Corp.VP, Bus Dev & Gov. Rel. | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 25,000 | $44.06 | 112,128 | |
| Mar 04, 2008 | Corp.VP, Bus Dev & Gov. Rel. | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 25,000 | $44.06 | -- | |
| Feb 22, 2006 | Corp.VP, Government Relations | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 25,000 | $44.06 | 132,551 | |
| Feb 22, 2006 | Corp.VP, Government Relations | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 25,000 | $44.06 | 25,000 | |
| Feb 15, 2006 | Corp.VP & Pres.Integrated Sys. | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 25,000 | $65.10 | 118,581 | |
| Mar 03, 2016 | Director, Chairman, CEO and President | Form 4 | Other acquisition or disposition (describe transaction) | 25,048 | -- | 50,421 | |
| Mar 03, 2016 | Director, Chairman, CEO and President | Form 4 | Other acquisition or disposition (describe transaction) | 25,048 | -- | 50,420 | |
| Feb 19, 2016 | Director, Chairman, CEO and President | Form 4 | Other acquisition or disposition (describe transaction) | 25,371 | -- | 130,285 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.