| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| STMP | Co-President and Corp & BusDev | Jul 24, 2017 | Option Exercise | $32.41 | 4,000 | 129,640 | 5,985 | Jul 26, 2017, 05:18 PM |
| STMP | Co-President and Corp & BusDev | Jul 24, 2017 | Sale | $151.37 | 4,000 | 605,470 | 5,285 | Jul 26, 2017, 05:18 PM |
| STMP | Co-President and Corp & BusDev | Jun 26, 2017 | Option Exercise | $32.41 | 4,000 | 129,640 | 5,985 | Jun 28, 2017, 04:20 PM |
| STMP | Co-President and Corp & BusDev | Jun 26, 2017 | Sale | $150.44 | 4,000 | 601,764 | 4,485 | Jun 28, 2017, 04:20 PM |
| STMP | Co-President and Corp & BusDev | May 24, 2017 | Option Exercise | $32.41 | 4,000 | 129,640 | 5,985 | May 26, 2017, 04:28 PM |
| STMP | Co-President and Corp & BusDev | May 24, 2017 | Sale | $131.64 | 4,000 | 526,554 | 5,885 | May 26, 2017, 04:28 PM |
| STMP | Co-President and Corp & BusDev | Apr 24, 2017 | Option Exercise | $32.41 | 4,184 | 135,603 | 6,169 | Apr 26, 2017, 07:14 PM |
| STMP | Co-President and Corp & BusDev | Apr 24, 2017 | Sale | $111.59 | 4,184 | 466,901 | 5,369 | Apr 26, 2017, 07:14 PM |
| STMP | Co-President and Corp & BusDev | Mar 24, 2017 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,985 | Mar 28, 2017, 05:39 PM |
| STMP | Co-President and Corp & BusDev | Mar 24, 2017 | Sale | $117.29 | 5,000 | 586,432 | 5,385 | Mar 28, 2017, 05:39 PM |
| STMP | Co-President and Corp & BusDev | Feb 20, 2014 | Sale | $35.10 | 2,778 | 97,508 | 573 | Mar 28, 2017, 05:37 PM |
| STMP | Co-President and Corp & BusDev | Feb 24, 2017 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,412 | Feb 27, 2017, 01:10 PM |
| STMP | Co-President and Corp & BusDev | Feb 24, 2017 | Sale | $131.59 | 5,000 | 657,960 | 1,412 | Feb 27, 2017, 01:10 PM |
| STMP | Co-President and Corp & BusDev | Jan 24, 2017 | Option Exercise | $32.41 | 4,985 | 161,564 | 6,078 | Feb 27, 2017, 01:08 PM |
| STMP | Co-President and Corp & BusDev | Jan 24, 2017 | Sale | $120.84 | 4,985 | 602,387 | 1,093 | Feb 27, 2017, 01:08 PM |
| STMP | Co-President and Corp & BusDev | Jan 31, 2017 | Option Exercise | $66.41 | 319 | 21,185 | 1,412 | Feb 09, 2017, 06:54 PM |
| STMP | Co-President and Corp & BusDev | Jan 24, 2017 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Jan 25, 2017, 12:43 PM |
| STMP | Co-President and Corp & BusDev | Jan 24, 2017 | Sale | $120.84 | 5,000 | 604,200 | 1,093 | Jan 25, 2017, 12:43 PM |
| STMP | Co-President and Corp & BusDev | Dec 23, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Jan 25, 2017, 12:42 PM |
| STMP | Co-President and Corp & BusDev | Dec 23, 2016 | Sale | $115.34 | 5,000 | 576,705 | 1,093 | Jan 25, 2017, 12:42 PM |
| STMP | Co-President and Corp & BusDev | Nov 25, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Jan 25, 2017, 12:40 PM |
| STMP | Co-President and Corp & BusDev | Nov 25, 2016 | Sale | $113.29 | 5,000 | 566,440 | 1,093 | Jan 25, 2017, 12:40 PM |
| STMP | Co-President and Corp & BusDev | Dec 23, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Dec 27, 2016, 09:14 AM |
| STMP | Co-President and Corp & BusDev | Dec 23, 2016 | Sale | $115.34 | 5,000 | 576,705 | 1,093 | Dec 27, 2016, 09:14 AM |
| STMP | Co-President and Corp & BusDev | Nov 25, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Nov 28, 2016, 02:52 PM |
| STMP | Co-President and Corp & BusDev | Nov 25, 2016 | Sale | $113.29 | 5,000 | 566,440 | 1,093 | Nov 28, 2016, 02:52 PM |
| STMP | Co-President and Corp & BusDev | Oct 24, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Oct 24, 2016, 06:17 PM |
| STMP | Co-President and Corp & BusDev | Oct 24, 2016 | Sale | $94.54 | 5,000 | 472,691 | 1,093 | Oct 24, 2016, 06:17 PM |
| STMP | Co-President and Corp & BusDev | Sep 26, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Sep 27, 2016, 04:17 PM |
| STMP | Co-President and Corp & BusDev | Sep 26, 2016 | Sale | $94.53 | 5,000 | 472,652 | 1,093 | Sep 27, 2016, 04:17 PM |
| STMP | Co-President and Corp & BusDev | Aug 24, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Aug 25, 2016, 01:23 PM |
| STMP | Co-President and Corp & BusDev | Aug 24, 2016 | Sale | $93.75 | 5,000 | 468,747 | 1,093 | Aug 25, 2016, 01:23 PM |
| STMP | Co-President and Corp & BusDev | Jul 25, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Jul 28, 2016, 02:26 PM |
| STMP | Co-President and Corp & BusDev | Jul 25, 2016 | Sale | $78.99 | 5,000 | 394,962 | 1,093 | Jul 28, 2016, 02:26 PM |
| STMP | Co-President and Corp & BusDev | Jun 24, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Jun 27, 2016, 12:56 PM |
| STMP | Co-President and Corp & BusDev | Jun 24, 2016 | Sale | $86.30 | 5,000 | 431,521 | 1,093 | Jun 27, 2016, 12:56 PM |
| STMP | Co-President and Corp & BusDev | May 24, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | May 26, 2016, 06:09 PM |
| STMP | Co-President and Corp & BusDev | May 24, 2016 | Sale | $83.97 | 5,000 | 419,848 | 1,093 | May 26, 2016, 06:09 PM |
| STMP | Co-President and Corp & BusDev | Apr 25, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Apr 27, 2016, 06:36 PM |
| STMP | Co-President and Corp & BusDev | Apr 25, 2016 | Sale | $93.87 | 5,000 | 469,349 | 1,093 | Apr 27, 2016, 06:36 PM |
| STMP | Co-President and Corp & BusDev | Mar 24, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Mar 28, 2016, 06:03 PM |
| STMP | Co-President and Corp & BusDev | Mar 24, 2016 | Sale | $107.62 | 5,000 | 538,095 | 1,093 | Mar 28, 2016, 06:03 PM |
| STMP | Co-President and Corp & BusDev | Feb 24, 2016 | Option Exercise | $32.41 | 5,000 | 162,050 | 6,093 | Feb 26, 2016, 06:30 PM |
| STMP | Co-President and Corp & BusDev | Feb 24, 2016 | Sale | $91.76 | 5,000 | 458,815 | 1,093 | Feb 26, 2016, 06:30 PM |
| STMP | Co-President and Corp & BusDev | Jan 29, 2016 | Option Exercise | $59.93 | 354 | 21,215 | 1,093 | Feb 02, 2016, 08:06 PM |
| STMP | Co-President and Corp & BusDev | Jan 25, 2016 | Option Exercise | $32.41 | 4,985 | 161,564 | 5,724 | Jan 27, 2016, 06:32 PM |
| STMP | Co-President and Corp & BusDev | Jan 25, 2016 | Sale | $94.57 | 4,985 | 471,445 | 739 | Jan 27, 2016, 06:32 PM |
| STMP | Co-President and Corp & BusDev | Dec 23, 2015 | Option Exercise | $32.41 | 5,000 | 162,050 | 5,739 | Dec 24, 2015, 12:08 PM |
| STMP | Co-President and Corp & BusDev | Dec 23, 2015 | Sale | $111.96 | 5,000 | 559,805 | 739 | Dec 24, 2015, 12:08 PM |
| STMP | Co-President and Corp & BusDev | Nov 23, 2015 | Option Exercise | $32.41 | 5,000 | 162,050 | 5,739 | Nov 25, 2015, 07:22 PM |
| STMP | Co-President and Corp & BusDev | Nov 25, 2015 | Option Exercise | $32.41 | 5,000 | 162,050 | 5,739 | Nov 25, 2015, 07:22 PM |
| STMP | Co-President and Corp & BusDev | Nov 23, 2015 | Sale | $101.05 | 5,000 | 505,235 | 739 | Nov 25, 2015, 07:22 PM |
| STMP | Co-President and Corp & BusDev | Nov 25, 2015 | Sale | $101.77 | 5,000 | 508,830 | 739 | Nov 25, 2015, 07:22 PM |
| STMP | Co-President and Corp & BusDev | Nov 06, 2015 | Option Exercise | $32.41 | 9,985 | 323,614 | 10,724 | Nov 10, 2015, 07:25 PM |
| STMP | Co-President and Corp & BusDev | Nov 06, 2015 | Sale | $100.24 | 9,985 | 1,000,866 | 739 | Nov 10, 2015, 07:25 PM |
| STMP | Co-President and Corp & BusDev | Jul 31, 2015 | Option Exercise | $38.55 | 139 | 5,358 | 739 | Aug 04, 2015, 06:34 PM |
| STMP | Co-President and Corp & BusDev | May 26, 2015 | Option Exercise | $32.41 | 12,500 | 405,125 | 13,100 | May 28, 2015, 07:06 PM |
| STMP | Co-President and Corp & BusDev | May 26, 2015 | Sale | $68.94 | 12,500 | 861,785 | 600 | May 28, 2015, 07:06 PM |
| STMP | Co-President and Corp & BusDev | Feb 24, 2015 | Option Exercise | $32.41 | 12,500 | 405,125 | 13,100 | Feb 26, 2015, 04:30 PM |
| STMP | Co-President and Corp & BusDev | Feb 24, 2015 | Sale | $56.17 | 12,500 | 702,125 | 600 | Feb 26, 2015, 04:30 PM |
| STMP | Co-President and Corp & BusDev | Jan 30, 2015 | Option Exercise | $26.44 | 600 | 15,864 | 600 | Feb 03, 2015, 07:25 PM |
| STMP | Co-President and Corp & BusDev | May 20, 2014 | Option Exercise | $12.55 | 2,778 | 34,864 | 2,778 | May 22, 2014, 05:41 PM |
| STMP | Co-President and Corp & BusDev | May 20, 2014 | Sale | $30.58 | 2,778 | 84,951 | 0 | May 22, 2014, 05:41 PM |
| STMP | Co-President and Corp & BusDev | Apr 21, 2014 | Option Exercise | $12.55 | 2,778 | 34,864 | 2,778 | Apr 23, 2014, 06:10 PM |
| STMP | Co-President and Corp & BusDev | Apr 21, 2014 | Sale | $33.61 | 2,778 | 93,369 | 0 | Apr 23, 2014, 06:10 PM |
| STMP | Co-President and Corp & BusDev | Mar 20, 2014 | Option Exercise | $12.55 | 2,777 | 34,851 | 2,777 | Mar 24, 2014, 06:29 PM |
| STMP | Co-President and Corp & BusDev | Mar 20, 2014 | Sale | $35.56 | 2,777 | 98,750 | 0 | Mar 24, 2014, 06:29 PM |
| STMP | Co-President and Corp & BusDev | Feb 20, 2014 | Option Exercise | $12.55 | 2,778 | 34,864 | 2,778 | Feb 24, 2014, 06:25 PM |
| STMP | Co-President and Corp & BusDev | Feb 20, 2014 | Sale | $35.10 | 2,778 | 97,508 | 0 | Feb 24, 2014, 06:25 PM |
| STMP | Co-President and Corp & BusDev | Jan 31, 2014 | Option Exercise | $33.54 | 573 | 19,218 | 573 | Feb 04, 2014, 07:15 PM |
| STMP | Co-President and Corp & BusDev | Jan 21, 2014 | Option Exercise | $12.55 | 2,778 | 34,864 | 2,778 | Jan 23, 2014, 07:28 PM |
| STMP | Co-President and Corp & BusDev | Jan 21, 2014 | Sale | $38.75 | 2,778 | 107,648 | 0 | Jan 23, 2014, 07:28 PM |
| STMP | Co-President and Corp & BusDev | Dec 20, 2013 | Option Exercise | $12.55 | 2,777 | 34,851 | 2,777 | Dec 24, 2013, 05:27 PM |
| STMP | Co-President and Corp & BusDev | Dec 20, 2013 | Sale | $42.69 | 2,777 | 118,559 | 0 | Dec 24, 2013, 05:27 PM |
| STMP | Co-President and Corp & BusDev | Nov 20, 2013 | Option Exercise | $12.55 | 2,777 | 34,851 | 2,777 | Nov 22, 2013, 07:53 PM |
| STMP | Co-President and Corp & BusDev | Nov 20, 2013 | Sale | $45.91 | 2,777 | 127,492 | 0 | Nov 22, 2013, 07:53 PM |
| STMP | Co-President and Corp & BusDev | Oct 21, 2013 | Option Exercise | $12.55 | 2,779 | 34,876 | 2,779 | Oct 23, 2013, 08:12 PM |
| STMP | Co-President and Corp & BusDev | Oct 21, 2013 | Sale | $46.01 | 2,779 | 127,869 | 0 | Oct 23, 2013, 08:12 PM |
| STMP | Co-President and Corp & BusDev | Sep 20, 2013 | Option Exercise | $12.55 | 2,777 | 34,851 | 2,777 | Sep 24, 2013, 06:10 PM |
| STMP | Co-President and Corp & BusDev | Sep 20, 2013 | Sale | $44.38 | 2,777 | 123,243 | 0 | Sep 24, 2013, 06:10 PM |
| STMP | Co-President and Corp & BusDev | Aug 20, 2013 | Option Exercise | $12.55 | 2,778 | 34,864 | 2,778 | Aug 21, 2013, 06:02 PM |
| STMP | Co-President and Corp & BusDev | Aug 19, 2013 | Sale | $40.57 | 5,109 | 207,296 | 1,800 | Aug 21, 2013, 06:02 PM |
| STMP | Co-President and Corp & BusDev | Aug 20, 2013 | Sale | $40.55 | 2,778 | 112,647 | 0 | Aug 21, 2013, 06:02 PM |
| STMP | Co-President and Corp & BusDev | Jul 31, 2013 | Option Exercise | $22.92 | 479 | 10,979 | 5,109 | Aug 02, 2013, 07:12 PM |
| STMP | Co-President and Corp & BusDev | Jul 22, 2013 | Option Exercise | $12.55 | 2,778 | 34,864 | 7,408 | Jul 23, 2013, 06:56 PM |
| STMP | Co-President and Corp & BusDev | Jul 22, 2013 | Sale | $39.23 | 2,778 | 108,981 | 4,630 | Jul 23, 2013, 06:56 PM |
| STMP | Co-President and Corp & BusDev | Jun 20, 2013 | Option Exercise | $12.55 | 2,777 | 34,851 | 7,407 | Jun 24, 2013, 04:41 PM |
| STMP | Co-President and Corp & BusDev | Jun 20, 2013 | Sale | $38.00 | 2,777 | 105,526 | 4,630 | Jun 24, 2013, 04:41 PM |
| STMP | Co-President and Corp & BusDev | May 20, 2013 | Option Exercise | $12.55 | 2,778 | 34,864 | 7,408 | May 22, 2013, 07:48 PM |
| STMP | Co-President and Corp & BusDev | May 20, 2013 | Sale | $37.77 | 2,778 | 104,925 | 4,630 | May 22, 2013, 07:48 PM |
| STMP | Co-President and Corp & BusDev | Apr 24, 2013 | Option Exercise | $12.55 | 5,556 | 69,728 | 10,186 | Apr 26, 2013, 06:16 PM |
| STMP | Co-President and Corp & BusDev | Apr 24, 2013 | Sale | $26.00 | 5,556 | 144,456 | 4,630 | Apr 26, 2013, 06:16 PM |
| STMP | Co-President and Corp & BusDev | Feb 20, 2013 | Option Exercise | $12.55 | 2,777 | 34,851 | 7,407 | Feb 21, 2013, 07:03 PM |
| STMP | Co-President and Corp & BusDev | Feb 20, 2013 | Sale | $24.33 | 2,777 | 67,560 | 4,630 | Feb 21, 2013, 07:03 PM |
| STMP | Co-President and Corp & BusDev | Jan 31, 2013 | Option Exercise | $17.09 | 600 | 10,254 | 4,630 | Feb 04, 2013, 08:26 PM |
| STMP | Co-President and Corp & BusDev | Jan 22, 2013 | Option Exercise | $12.55 | 2,778 | 34,864 | 6,808 | Jan 24, 2013, 05:27 PM |
| STMP | Co-President and Corp & BusDev | Jan 22, 2013 | Sale | $27.17 | 2,778 | 75,478 | 4,030 | Jan 24, 2013, 05:27 PM |
| STMP | Co-President and Corp & BusDev | Dec 20, 2012 | Option Exercise | $12.55 | 2,778 | 34,864 | 6,808 | Dec 21, 2012, 07:20 PM |
| STMP | Co-President and Corp & BusDev | Dec 20, 2012 | Sale | $26.13 | 2,778 | 72,589 | 4,030 | Dec 21, 2012, 07:20 PM |
| STMP | Co-President and Corp & BusDev | Nov 21, 2012 | Option Exercise | $12.55 | 2,778 | 34,864 | 6,808 | Nov 26, 2012, 06:52 PM |
| STMP | Co-President and Corp & BusDev | Nov 21, 2012 | Sale | $25.09 | 2,778 | 69,697 | 4,030 | Nov 26, 2012, 06:52 PM |
| STMP | Co-President and Corp & BusDev | Oct 26, 2012 | Option Exercise | $12.55 | 2,778 | 34,864 | 6,808 | Oct 29, 2012, 09:10 PM |
| STMP | Co-President and Corp & BusDev | Oct 26, 2012 | Sale | $25.65 | 2,778 | 71,256 | 4,030 | Oct 29, 2012, 09:10 PM |
| STMP | Co-President and Corp & BusDev | Sep 21, 2012 | Option Exercise | $12.55 | 1,577 | 19,791 | 5,607 | Sep 24, 2012, 01:40 PM |
| STMP | Co-President and Corp & BusDev | Sep 20, 2012 | Option Exercise | $12.55 | 3,978 | 49,924 | 8,008 | Sep 24, 2012, 01:40 PM |
| STMP | Co-President and Corp & BusDev | Sep 21, 2012 | Sale | $24.27 | 1,577 | 38,274 | 4,030 | Sep 24, 2012, 01:40 PM |
| STMP | Co-President and Corp & BusDev | Sep 20, 2012 | Sale | $24.00 | 3,978 | 95,472 | 4,030 | Sep 24, 2012, 01:40 PM |
| STMP | Co-President and Corp & BusDev | Jul 31, 2012 | Option Exercise | $17.98 | 508 | 9,134 | 4,030 | Aug 02, 2012, 08:54 PM |
| STMP | Co-President and Corp & BusDev | Jul 20, 2012 | Option Exercise | $12.55 | 2,778 | 34,864 | 6,300 | Jul 23, 2012, 07:44 PM |
| STMP | Co-President and Corp & BusDev | Jul 20, 2012 | Sale | $24.86 | 2,778 | 69,061 | 3,522 | Jul 23, 2012, 07:44 PM |
| STMP | Co-President and Corp & BusDev | Jun 29, 2012 | Option Exercise | $12.55 | 2,778 | 34,864 | 6,300 | Jul 03, 2012, 12:15 PM |
| STMP | Co-President and Corp & BusDev | Jun 29, 2012 | Sale | $24.00 | 2,778 | 66,672 | 3,522 | Jul 03, 2012, 12:15 PM |
| STMP | Co-President and Corp & BusDev | May 21, 2012 | Option Exercise | $12.55 | 2,777 | 34,851 | 6,299 | May 23, 2012, 09:36 PM |
| STMP | Co-President and Corp & BusDev | May 21, 2012 | Sale | $24.53 | 2,777 | 68,120 | 3,522 | May 23, 2012, 09:36 PM |
| STMP | Co-President and Corp & BusDev | Apr 23, 2012 | Option Exercise | $12.55 | 2,778 | 34,864 | 6,300 | Apr 24, 2012, 03:19 PM |
| STMP | Co-President and Corp & BusDev | Apr 23, 2012 | Sale | $27.68 | 2,778 | 76,890 | 3,522 | Apr 24, 2012, 03:19 PM |
| STMP | Co-President and Corp & BusDev | Mar 21, 2012 | Option Exercise | $12.55 | 2,778 | 34,864 | 6,300 | Mar 22, 2012, 07:32 PM |
| STMP | Co-President and Corp & BusDev | Mar 21, 2012 | Sale | $27.38 | 2,778 | 76,055 | 3,522 | Mar 22, 2012, 07:32 PM |
| STMP | Co-President and Corp & BusDev | Feb 21, 2012 | Option Exercise | $12.55 | 2,778 | 34,864 | 6,300 | Feb 23, 2012, 01:56 PM |
| STMP | Co-President and Corp & BusDev | Feb 21, 2012 | Sale | $28.72 | 2,778 | 79,794 | 3,522 | Feb 23, 2012, 01:56 PM |
| STMP | Co-President and Corp & BusDev | Jan 31, 2012 | Option Exercise | $14.80 | 522 | 7,726 | 3,522 | Feb 02, 2012, 08:32 PM |
| STMP | Vice President, Corp & BusDev | Jan 23, 2012 | Option Exercise | $12.55 | 2,778 | 34,864 | 5,778 | Jan 25, 2012, 04:56 PM |
| STMP | Vice President, Corp & BusDev | Jan 23, 2012 | Sale | $30.43 | 2,778 | 84,535 | 3,000 | Jan 25, 2012, 04:56 PM |
| STMP | Vice President, Corp & BusDev | Jan 03, 2012 | Option Exercise | $12.55 | 2,777 | 34,851 | 5,777 | Jan 05, 2012, 05:48 PM |
| STMP | Vice President, Corp & BusDev | Jan 03, 2012 | Sale | $26.51 | 2,777 | 73,620 | 3,000 | Jan 05, 2012, 05:48 PM |
| STMP | Vice President, Corp & BusDev | Nov 29, 2011 | Option Exercise | $12.55 | 2,781 | 34,895 | 5,781 | Dec 01, 2011, 07:44 PM |
| STMP | Vice President, Corp & BusDev | Nov 29, 2011 | Sale | $26.42 | 2,781 | 73,474 | 3,000 | Dec 01, 2011, 07:44 PM |
| STMP | Vice President, Corp & BusDev | Nov 07, 2011 | Option Exercise | $13.10 | 4,443 | 58,214 | 7,443 | Nov 08, 2011, 08:30 PM |
| STMP | Vice President, Corp & BusDev | Nov 04, 2011 | Option Exercise | $12.55 | 4,500 | 56,475 | 7,500 | Nov 08, 2011, 08:30 PM |
| STMP | Vice President, Corp & BusDev | Nov 04, 2011 | Sale | $28.48 | 4,500 | 128,156 | 3,000 | Nov 08, 2011, 08:30 PM |
| STMP | Vice President, Corp & BusDev | Nov 07, 2011 | Sale | $28.17 | 4,443 | 125,168 | 3,000 | Nov 08, 2011, 08:30 PM |
| STMP | Vice President, Corp & BusDev | Nov 01, 2011 | Option Exercise | $9.82 | 5,666 | 55,640 | 8,666 | Nov 03, 2011, 08:58 PM |
| STMP | Vice President, Corp & BusDev | Nov 03, 2011 | Option Exercise | $20.29 | 11,330 | 229,901 | 8,665 | Nov 03, 2011, 08:58 PM |
| STMP | Vice President, Corp & BusDev | Nov 02, 2011 | Option Exercise | $19.65 | 11,338 | 222,781 | 8,669 | Nov 03, 2011, 08:58 PM |
| STMP | Vice President, Corp & BusDev | Nov 01, 2011 | Sale | $29.89 | 5,666 | 169,375 | 3,000 | Nov 03, 2011, 08:58 PM |
| STMP | Vice President, Corp & BusDev | Aug 03, 2011 | Option Exercise | $13.10 | 24,852 | 325,561 | 27,852 | Aug 04, 2011, 06:52 PM |
| STMP | Vice President, Corp & BusDev | Aug 03, 2011 | Sale | $17.45 | 24,852 | 433,667 | 3,000 | Aug 04, 2011, 06:52 PM |
| STMP | Vice President, Corp & BusDev | Jul 29, 2011 | Option Exercise | $11.08 | 600 | 6,648 | 3,000 | Aug 02, 2011, 07:30 PM |
| STMP | Vice President, Corp & BusDev | Aug 02, 2011 | Option Exercise | $13.10 | 1 | 13 | 3,001 | Aug 02, 2011, 07:30 PM |
| STMP | Vice President, Corp & BusDev | Aug 01, 2011 | Option Exercise | $13.10 | 37,001 | 484,713 | 40,001 | Aug 02, 2011, 07:30 PM |
| STMP | Vice President, Corp & BusDev | Jul 29, 2011 | Option Exercise | $13.10 | 88,146 | 1,154,713 | 90,546 | Aug 02, 2011, 07:30 PM |
| STMP | Vice President, Corp & BusDev | Aug 01, 2011 | Sale | $17.39 | 37,001 | 643,599 | 3,000 | Aug 02, 2011, 07:30 PM |
| STMP | Vice President, Corp & BusDev | Jul 29, 2011 | Sale | $16.42 | 88,146 | 1,447,190 | 2,400 | Aug 02, 2011, 07:30 PM |
| STMP | Vice President, Corp & BusDev | Aug 02, 2011 | Sale | $17.75 | 1 | 18 | 3,000 | Aug 02, 2011, 07:30 PM |
| STMP | Vice President, Corp & BusDev | Jan 31, 2011 | Option Exercise | $7.28 | 600 | 4,368 | 2,400 | Feb 02, 2011, 08:11 PM |
| STMP | Vice President, Corp & BusDev | Nov 03, 2010 | Sale | $14.50 | 27,256 | 395,232 | 4,800 | Nov 05, 2010, 07:03 PM |
| STMP | Vice President, Corp & BusDev | Jul 30, 2010 | Option Exercise | $7.63 | 600 | 4,578 | 29,056 | Aug 03, 2010, 05:27 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| STMP | Co-President and Corp & BusDev | Jul 24, 2017 | Option Exercise | 129,640 |
| STMP | Co-President and Corp & BusDev | Jul 24, 2017 | Sale | 605,470 |
| STMP | Co-President and Corp & BusDev | Jun 26, 2017 | Option Exercise | 129,640 |
| STMP | Co-President and Corp & BusDev | Jun 26, 2017 | Sale | 601,764 |
| STMP | Co-President and Corp & BusDev | May 24, 2017 | Option Exercise | 129,640 |
| STMP | Co-President and Corp & BusDev | May 24, 2017 | Sale | 526,554 |
| STMP | Co-President and Corp & BusDev | Apr 24, 2017 | Option Exercise | 135,603 |
| STMP | Co-President and Corp & BusDev | Apr 24, 2017 | Sale | 466,901 |
| STMP | Co-President and Corp & BusDev | Mar 24, 2017 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Mar 24, 2017 | Sale | 586,432 |
| STMP | Co-President and Corp & BusDev | Feb 20, 2014 | Sale | 97,508 |
| STMP | Co-President and Corp & BusDev | Feb 24, 2017 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Feb 24, 2017 | Sale | 657,960 |
| STMP | Co-President and Corp & BusDev | Jan 24, 2017 | Option Exercise | 161,564 |
| STMP | Co-President and Corp & BusDev | Jan 24, 2017 | Sale | 602,387 |
| STMP | Co-President and Corp & BusDev | Jan 31, 2017 | Option Exercise | 21,185 |
| STMP | Co-President and Corp & BusDev | Jan 24, 2017 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Jan 24, 2017 | Sale | 604,200 |
| STMP | Co-President and Corp & BusDev | Dec 23, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Dec 23, 2016 | Sale | 576,705 |
| STMP | Co-President and Corp & BusDev | Nov 25, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Nov 25, 2016 | Sale | 566,440 |
| STMP | Co-President and Corp & BusDev | Dec 23, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Dec 23, 2016 | Sale | 576,705 |
| STMP | Co-President and Corp & BusDev | Nov 25, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Nov 25, 2016 | Sale | 566,440 |
| STMP | Co-President and Corp & BusDev | Oct 24, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Oct 24, 2016 | Sale | 472,691 |
| STMP | Co-President and Corp & BusDev | Sep 26, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Sep 26, 2016 | Sale | 472,652 |
| STMP | Co-President and Corp & BusDev | Aug 24, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Aug 24, 2016 | Sale | 468,747 |
| STMP | Co-President and Corp & BusDev | Jul 25, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Jul 25, 2016 | Sale | 394,962 |
| STMP | Co-President and Corp & BusDev | Jun 24, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Jun 24, 2016 | Sale | 431,521 |
| STMP | Co-President and Corp & BusDev | May 24, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | May 24, 2016 | Sale | 419,848 |
| STMP | Co-President and Corp & BusDev | Apr 25, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Apr 25, 2016 | Sale | 469,349 |
| STMP | Co-President and Corp & BusDev | Mar 24, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Mar 24, 2016 | Sale | 538,095 |
| STMP | Co-President and Corp & BusDev | Feb 24, 2016 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Feb 24, 2016 | Sale | 458,815 |
| STMP | Co-President and Corp & BusDev | Jan 29, 2016 | Option Exercise | 21,215 |
| STMP | Co-President and Corp & BusDev | Jan 25, 2016 | Option Exercise | 161,564 |
| STMP | Co-President and Corp & BusDev | Jan 25, 2016 | Sale | 471,445 |
| STMP | Co-President and Corp & BusDev | Dec 23, 2015 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Dec 23, 2015 | Sale | 559,805 |
| STMP | Co-President and Corp & BusDev | Nov 23, 2015 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Nov 25, 2015 | Option Exercise | 162,050 |
| STMP | Co-President and Corp & BusDev | Nov 23, 2015 | Sale | 505,235 |
| STMP | Co-President and Corp & BusDev | Nov 25, 2015 | Sale | 508,830 |
| STMP | Co-President and Corp & BusDev | Nov 06, 2015 | Option Exercise | 323,614 |
| STMP | Co-President and Corp & BusDev | Nov 06, 2015 | Sale | 1,000,866 |
| STMP | Co-President and Corp & BusDev | Jul 31, 2015 | Option Exercise | 5,358 |
| STMP | Co-President and Corp & BusDev | May 26, 2015 | Option Exercise | 405,125 |
| STMP | Co-President and Corp & BusDev | May 26, 2015 | Sale | 861,785 |
| STMP | Co-President and Corp & BusDev | Feb 24, 2015 | Option Exercise | 405,125 |
| STMP | Co-President and Corp & BusDev | Feb 24, 2015 | Sale | 702,125 |
| STMP | Co-President and Corp & BusDev | Jan 30, 2015 | Option Exercise | 15,864 |
| STMP | Co-President and Corp & BusDev | May 20, 2014 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | May 20, 2014 | Sale | 84,951 |
| STMP | Co-President and Corp & BusDev | Apr 21, 2014 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Apr 21, 2014 | Sale | 93,369 |
| STMP | Co-President and Corp & BusDev | Mar 20, 2014 | Option Exercise | 34,851 |
| STMP | Co-President and Corp & BusDev | Mar 20, 2014 | Sale | 98,750 |
| STMP | Co-President and Corp & BusDev | Feb 20, 2014 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Feb 20, 2014 | Sale | 97,508 |
| STMP | Co-President and Corp & BusDev | Jan 31, 2014 | Option Exercise | 19,218 |
| STMP | Co-President and Corp & BusDev | Jan 21, 2014 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Jan 21, 2014 | Sale | 107,648 |
| STMP | Co-President and Corp & BusDev | Dec 20, 2013 | Option Exercise | 34,851 |
| STMP | Co-President and Corp & BusDev | Dec 20, 2013 | Sale | 118,559 |
| STMP | Co-President and Corp & BusDev | Nov 20, 2013 | Option Exercise | 34,851 |
| STMP | Co-President and Corp & BusDev | Nov 20, 2013 | Sale | 127,492 |
| STMP | Co-President and Corp & BusDev | Oct 21, 2013 | Option Exercise | 34,876 |
| STMP | Co-President and Corp & BusDev | Oct 21, 2013 | Sale | 127,869 |
| STMP | Co-President and Corp & BusDev | Sep 20, 2013 | Option Exercise | 34,851 |
| STMP | Co-President and Corp & BusDev | Sep 20, 2013 | Sale | 123,243 |
| STMP | Co-President and Corp & BusDev | Aug 20, 2013 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Aug 19, 2013 | Sale | 207,296 |
| STMP | Co-President and Corp & BusDev | Aug 20, 2013 | Sale | 112,647 |
| STMP | Co-President and Corp & BusDev | Jul 31, 2013 | Option Exercise | 10,979 |
| STMP | Co-President and Corp & BusDev | Jul 22, 2013 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Jul 22, 2013 | Sale | 108,981 |
| STMP | Co-President and Corp & BusDev | Jun 20, 2013 | Option Exercise | 34,851 |
| STMP | Co-President and Corp & BusDev | Jun 20, 2013 | Sale | 105,526 |
| STMP | Co-President and Corp & BusDev | May 20, 2013 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | May 20, 2013 | Sale | 104,925 |
| STMP | Co-President and Corp & BusDev | Apr 24, 2013 | Option Exercise | 69,728 |
| STMP | Co-President and Corp & BusDev | Apr 24, 2013 | Sale | 144,456 |
| STMP | Co-President and Corp & BusDev | Feb 20, 2013 | Option Exercise | 34,851 |
| STMP | Co-President and Corp & BusDev | Feb 20, 2013 | Sale | 67,560 |
| STMP | Co-President and Corp & BusDev | Jan 31, 2013 | Option Exercise | 10,254 |
| STMP | Co-President and Corp & BusDev | Jan 22, 2013 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Jan 22, 2013 | Sale | 75,478 |
| STMP | Co-President and Corp & BusDev | Dec 20, 2012 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Dec 20, 2012 | Sale | 72,589 |
| STMP | Co-President and Corp & BusDev | Nov 21, 2012 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Nov 21, 2012 | Sale | 69,697 |
| STMP | Co-President and Corp & BusDev | Oct 26, 2012 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Oct 26, 2012 | Sale | 71,256 |
| STMP | Co-President and Corp & BusDev | Sep 21, 2012 | Option Exercise | 19,791 |
| STMP | Co-President and Corp & BusDev | Sep 20, 2012 | Option Exercise | 49,924 |
| STMP | Co-President and Corp & BusDev | Sep 21, 2012 | Sale | 38,274 |
| STMP | Co-President and Corp & BusDev | Sep 20, 2012 | Sale | 95,472 |
| STMP | Co-President and Corp & BusDev | Jul 31, 2012 | Option Exercise | 9,134 |
| STMP | Co-President and Corp & BusDev | Jul 20, 2012 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Jul 20, 2012 | Sale | 69,061 |
| STMP | Co-President and Corp & BusDev | Jun 29, 2012 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Jun 29, 2012 | Sale | 66,672 |
| STMP | Co-President and Corp & BusDev | May 21, 2012 | Option Exercise | 34,851 |
| STMP | Co-President and Corp & BusDev | May 21, 2012 | Sale | 68,120 |
| STMP | Co-President and Corp & BusDev | Apr 23, 2012 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Apr 23, 2012 | Sale | 76,890 |
| STMP | Co-President and Corp & BusDev | Mar 21, 2012 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Mar 21, 2012 | Sale | 76,055 |
| STMP | Co-President and Corp & BusDev | Feb 21, 2012 | Option Exercise | 34,864 |
| STMP | Co-President and Corp & BusDev | Feb 21, 2012 | Sale | 79,794 |
| STMP | Co-President and Corp & BusDev | Jan 31, 2012 | Option Exercise | 7,726 |
| STMP | Vice President, Corp & BusDev | Jan 23, 2012 | Option Exercise | 34,864 |
| STMP | Vice President, Corp & BusDev | Jan 23, 2012 | Sale | 84,535 |
| STMP | Vice President, Corp & BusDev | Jan 03, 2012 | Option Exercise | 34,851 |
| STMP | Vice President, Corp & BusDev | Jan 03, 2012 | Sale | 73,620 |
| STMP | Vice President, Corp & BusDev | Nov 29, 2011 | Option Exercise | 34,895 |
| STMP | Vice President, Corp & BusDev | Nov 29, 2011 | Sale | 73,474 |
| STMP | Vice President, Corp & BusDev | Nov 07, 2011 | Option Exercise | 58,214 |
| STMP | Vice President, Corp & BusDev | Nov 04, 2011 | Option Exercise | 56,475 |
| STMP | Vice President, Corp & BusDev | Nov 04, 2011 | Sale | 128,156 |
| STMP | Vice President, Corp & BusDev | Nov 07, 2011 | Sale | 125,168 |
| STMP | Vice President, Corp & BusDev | Nov 01, 2011 | Option Exercise | 55,640 |
| STMP | Vice President, Corp & BusDev | Nov 03, 2011 | Option Exercise | 229,901 |
| STMP | Vice President, Corp & BusDev | Nov 02, 2011 | Option Exercise | 222,781 |
| STMP | Vice President, Corp & BusDev | Nov 01, 2011 | Sale | 169,375 |
| STMP | Vice President, Corp & BusDev | Aug 03, 2011 | Option Exercise | 325,561 |
| STMP | Vice President, Corp & BusDev | Aug 03, 2011 | Sale | 433,667 |
| STMP | Vice President, Corp & BusDev | Jul 29, 2011 | Option Exercise | 6,648 |
| STMP | Vice President, Corp & BusDev | Aug 02, 2011 | Option Exercise | 13 |
| STMP | Vice President, Corp & BusDev | Aug 01, 2011 | Option Exercise | 484,713 |
| STMP | Vice President, Corp & BusDev | Jul 29, 2011 | Option Exercise | 1,154,713 |
| STMP | Vice President, Corp & BusDev | Aug 01, 2011 | Sale | 643,599 |
| STMP | Vice President, Corp & BusDev | Jul 29, 2011 | Sale | 1,447,190 |
| STMP | Vice President, Corp & BusDev | Aug 02, 2011 | Sale | 18 |
| STMP | Vice President, Corp & BusDev | Jan 31, 2011 | Option Exercise | 4,368 |
| STMP | Vice President, Corp & BusDev | Nov 03, 2010 | Sale | 395,232 |
| STMP | Vice President, Corp & BusDev | Jul 30, 2010 | Option Exercise | 4,578 |