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| Latest Insider Trading | Top Insider Trading Recent Week | Top 10% Owner Trading Recent Week | Filter
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| Ticker | Owner | Relationship | Date | Transaction | Cost  |
#Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| MASI | Barker Steven | Director | May 29 '20 | Option Exercise | 240.19 | 1,304 | 313,208 | 67,549 | Jun 02 05:23 PM |
| MASI | Barker Steven | Director | Apr 14 '20 | Option Exercise | 41.80 | 10,000 | 418,000 | 76,245 | Apr 15 04:25 PM |
| MASI | Barker Steven | Director | Apr 14 '20 | Sale | 190.00 | 10,000 | 1,900,045 | 66,245 | Apr 15 04:25 PM |
| MASI | Barker Steven | Director | Jan 22 '20 | Option Exercise | 28.03 | 10,000 | 280,300 | 76,245 | Jan 24 04:04 PM |
| MASI | Barker Steven | Director | Jan 22 '20 | Sale | 175.00 | 10,000 | 1,750,001 | 66,245 | Jan 24 04:04 PM |
| MASI | Barker Steven | Director | Jul 26 '19 | Option Exercise | 28.03 | 10,000 | 280,300 | 76,245 | Jul 30 04:22 PM |
| MASI | Barker Steven | Director | Jul 26 '19 | Sale | 160.00 | 10,000 | 1,600,000 | 66,245 | Jul 30 04:22 PM |
| MASI | Barker Steven | Director | Jul 01 '19 | Option Exercise | 20.19 | 10,000 | 201,900 | 76,245 | Jul 03 06:02 PM |
| MASI | Barker Steven | Director | Jul 01 '19 | Sale | 150.00 | 10,000 | 1,500,000 | 66,245 | Jul 03 06:02 PM |
| MASI | Barker Steven | Director | May 30 '19 | Option Exercise | 137.95 | 1,413 | 194,923 | 66,245 | Jun 03 04:10 PM |
| MASI | Barker Steven | Director | May 16 '19 | Option Exercise | 21.97 | 10,000 | 219,700 | 74,832 | May 17 04:23 PM |
| MASI | Barker Steven | Director | May 16 '19 | Sale | 145.00 | 10,000 | 1,450,000 | 64,832 | May 17 04:23 PM |
| MASI | Barker Steven | Director | Apr 01 '19 | Option Exercise | 20.19 | 10,000 | 201,900 | 74,832 | Apr 02 04:36 PM |
| MASI | Barker Steven | Director | Apr 01 '19 | Sale | 140.00 | 10,000 | 1,400,000 | 64,832 | Apr 02 04:36 PM |
| MASI | Barker Steven | Director | Mar 28 '19 | Option Exercise | 21.97 | 10,000 | 219,700 | 74,832 | Mar 29 05:04 PM |
| MASI | Barker Steven | Director | Mar 28 '19 | Sale | 135.00 | 10,000 | 1,350,000 | 64,832 | Mar 29 05:04 PM |
| MASI | Barker Steven | Director | Feb 25 '19 | Option Exercise | 30.06 | 5,877 | 176,663 | 70,709 | Feb 27 04:07 PM |
| MASI | Barker Steven | Director | Feb 25 '19 | Sale | 130.00 | 5,877 | 764,010 | 64,832 | Feb 27 04:07 PM |
| MASI | Barker Steven | Director | Feb 19 '19 | Option Exercise | 30.06 | 4,123 | 123,937 | 68,955 | Feb 21 05:09 PM |
| MASI | Barker Steven | Director | Feb 19 '19 | Sale | 130.00 | 4,123 | 535,990 | 64,832 | Feb 21 05:09 PM |
| MASI | Barker Steven | Director | Aug 09 '18 | Option Exercise | 30.06 | 10,000 | 300,600 | 74,832 | Aug 13 05:43 PM |
| MASI | Barker Steven | Director | Aug 09 '18 | Sale | 110.00 | 10,000 | 1,100,000 | 64,832 | Aug 13 05:43 PM |
| MASI | Barker Steven | Director | May 30 '18 | Option Exercise | 27.25 | 10,000 | 272,500 | 73,249 | Jun 01 06:06 PM |
| MASI | Barker Steven | Director | May 31 '18 | Option Exercise | 99.05 | 1,583 | 156,796 | 64,832 | Jun 01 06:06 PM |
| MASI | Barker Steven | Director | May 30 '18 | Sale | 100.00 | 10,000 | 1,000,000 | 63,249 | Jun 01 06:06 PM |
| MASI | Barker Steven | Director | Nov 01 '17 | Option Exercise | 27.25 | 10,000 | 272,500 | 73,249 | Nov 03 04:36 PM |
| MASI | Barker Steven | Director | Nov 01 '17 | Sale | 90.00 | 10,000 | 900,000 | 63,249 | Nov 03 04:36 PM |
| MASI | Barker Steven | Director | Apr 25 '17 | Option Exercise | 23.98 | 10,000 | 239,800 | 73,249 | Apr 26 04:45 PM |
| MASI | Barker Steven | Director | Apr 25 '17 | Sale | 100.00 | 10,000 | 1,000,000 | 63,249 | Apr 26 04:45 PM |
| MASI | Barker Steven | Director | Apr 20 '17 | Option Exercise | 97.39 | 3,249 | 316,420 | 63,249 | Apr 21 04:30 PM |
| MASI | Barker Steven | Director | Apr 19 '17 | Option Exercise | 23.98 | 10,000 | 239,800 | 70,000 | Apr 21 04:30 PM |
| MASI | Barker Steven | Director | Apr 19 '17 | Sale | 95.00 | 10,000 | 950,000 | 60,000 | Apr 21 04:30 PM |
| MASI | Barker Steven | Director | Jul 21 '15 | Option Exercise | 4.67 | 30,000 | 140,001 | 70,000 | Jul 23 05:10 PM |
| MASI | Barker Steven | Director | Jul 21 '15 | Sale | 40.00 | 20,000 | 800,000 | 50,000 | Jul 23 05:10 PM |
| MASI | Barker Steven | Director | Jun 12 '15 | Option Exercise | 4.67 | 30,000 | 140,001 | 70,000 | Jun 16 04:19 PM |
| MASI | Barker Steven | Director | Jun 12 '15 | Sale | 38.00 | 25,000 | 950,000 | 45,000 | Jun 16 04:19 PM |
| MASI | Barker Steven | Director | Jun 04 '15 | Option Exercise | 4.67 | 30,000 | 140,001 | 65,000 | Jun 08 05:14 PM |
| MASI | Barker Steven | Director | Jun 04 '15 | Sale | 36.20 | 25,000 | 905,058 | 40,000 | Jun 08 05:14 PM |
| MASI | Barker Steven | Director | Feb 25 '15 | Option Exercise | 4.67 | 20,000 | 93,334 | 40,000 | Feb 26 06:54 PM |
| MASI | Barker Steven | Director | Sep 20 '12 | Option Exercise | 4.67 | 10,000 | 46,667 | 30,000 | Sep 24 05:03 PM |
| MASI | Barker Steven | Director | Sep 20 '12 | Sale | 25.00 | 10,000 | 250,000 | 20,000 | Sep 24 05:03 PM |
| MASI | Barker Steven | Director | Mar 22 '11 | Option Exercise | 4.67 | 10,000 | 46,667 | 10,000 | Mar 24 02:08 PM |
| MASI | Barker Steven | Director | Mar 22 '11 | Sale | 32.00 | 10,000 | 320,000 | 0 | Mar 24 02:08 PM |
| MASI | Barker Steven | Director | Feb 26 '10 | Option Exercise | 4.67 | 10,000 | 46,667 | 20,000 | Mar 02 06:06 PM |
| MASI | Barker Steven | Director | Aug 21 '08 | Option Exercise | 8.11 | 20,000 | 162,234 | 10,000 | Aug 25 06:34 PM |
| MASI | Barker Steven | Director | Aug 21 '08 | Sale | 37.95 | 8,770 | 332,811 | 0 | Aug 25 06:34 PM |
| MASI | Barker Steven | Director | Jul 09 '08 | Option Exercise | 11.56 | 20,000 | 231,134 | 20,000 | Jul 11 05:27 PM |
| MASI | Barker Steven | Director | Jul 09 '08 | Sale | 35.09 | 20,000 | 701,810 | 0 | Jul 11 05:27 PM |
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