Date Filer Title Filing Type Shares Traded Price Total Held
May 18, 2018
Ten Percent Owner
Ten Percent Owner Form 4 Open market or private purchase of non-derivative or derivative security 39,129 $58.36 5,261,269
May 14, 2007
Director, Chairman & CEO, Director
Director, Chairman & CEO, Director Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 40,000 -- 40,000
Oct 23, 2003
Director
Director Form 4 Open market or private sale of non-derivative or derivative security 40,000 $21.00 --
Sep 13, 2016
Ten Percent Owner
Ten Percent Owner Form 4 Open market or private purchase of non-derivative or derivative security 40,803 $53.53 4,558,387
Feb 21, 2019
Director, President and CEO
Director, President and CEO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 41,323 -- 117,970
Sep 12, 2016
Ten Percent Owner
Ten Percent Owner Form 4 Open market or private purchase of non-derivative or derivative security 42,500 $54.14 4,517,584
Feb 25, 2011
Director, President & CEO
Director, President & CEO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 44,200 $61.34 68,843
Feb 25, 2016
Ten Percent Owner
Ten Percent Owner Form 4 Open market or private purchase of non-derivative or derivative security 46,278 $39.92 4,178,229
Dec 06, 2017
Ten Percent Owner
Ten Percent Owner Form 4 Open market or private purchase of non-derivative or derivative security 46,892 $67.45 4,633,580
Aug 21, 2009
Director, Executive Chm. of the Board
Director, Executive Chm. of the Board Form 4 Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 48,000 $7.00 165,686
Aug 21, 2009
Director, Executive Chm. of the Board
Director, Executive Chm. of the Board Form 4 Open market or private sale of non-derivative or derivative security 48,000 $53.51 117,686
Aug 21, 2009
Director, Executive Chm. of the Board
Director, Executive Chm. of the Board Form 4 Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 48,000 -- --
Feb 23, 2017
Director, President and CEO
Director, President and CEO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 48,955 -- 140,040
Apr 01, 2016
Ten Percent Owner
Ten Percent Owner Form 4 Open market or private sale of non-derivative or derivative security 49,643 $41.77 4,475,441
May 23, 2018
Ten Percent Owner
Ten Percent Owner Form 4 Open market or private purchase of non-derivative or derivative security 50,000 $59.56 5,464,889
Feb 17, 2016
Ten Percent Owner
Ten Percent Owner Form 4 Open market or private purchase of non-derivative or derivative security 50,000 $36.82 4,008,937
Feb 13, 2009
Director, President & COO
Director, President & COO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 50,000 -- 50,000
Apr 01, 2016
Ten Percent Owner
Ten Percent Owner Form 4 Open market or private purchase of non-derivative or derivative security 50,001 $41.81 4,525,084
Feb 22, 2018
Director, President and CEO
Director, President and CEO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 50,356 -- 101,353
Feb 22, 2013
Director, President and CEO
Director, President and CEO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 51,270 -- 51,270
May 19, 2005
Director, President & COO, Director
Director, President & COO, Director Form 4 Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 52,500 $7.00 71,171
May 19, 2005
Director, President & COO, Director
Director, President & COO, Director Form 4 Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 52,500 -- --
Dec 08, 2017
Ten Percent Owner
Ten Percent Owner Form 4 Open market or private purchase of non-derivative or derivative security 53,905 $69.19 5,093,440
Dec 07, 2017
Ten Percent Owner
Ten Percent Owner Form 4 Open market or private purchase of non-derivative or derivative security 58,562 $69.20 4,713,175
Feb 21, 2014
Director, President and CEO
Director, President and CEO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 58,957 -- 58,957

* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.

For recent transactions, including derivative transactions, see our Section 16 SEC filings page.