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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 |
|---|---|---|---|---|---|---|---|---|---|
| CERS | Greenman William Mariner | President and CEO | Mar 13 '25 | Sale | 1.45 | 71,086 | 103,075 | 4,238,672 | Mar 17 05:00 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 14 '25 | Sale | 1.45 | 122,827 | 178,099 | 4,115,845 | Mar 17 05:00 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 07 '25 | Sale | 1.50 | 60,984 | 91,354 | 4,309,758 | Mar 10 07:55 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 04 '25 | Sale | 1.55 | 23,023 | 35,651 | 3,230,000 | Mar 05 08:29 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 13 '24 | Sale | 2.06 | 62,315 | 128,182 | 3,244,892 | Mar 14 09:30 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 14 '24 | Sale | 2.02 | 63,611 | 128,195 | 3,181,281 | Mar 14 09:30 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 13 '23 | Sale | 2.80 | 60,480 | 169,344 | 2,616,411 | Mar 14 07:47 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 14 '22 | Sale | 5.04 | 165,021 | 831,634 | 1,885,141 | Mar 15 10:00 PM |
| CERS | Greenman William Mariner | President and CEO | Feb 25 '22 | Option Exercise | 3.75 | 380,000 | 1,425,000 | 1,902,281 | Mar 01 09:18 PM |
| CERS | Greenman William Mariner | President and CEO | Feb 25 '22 | Sale | 5.70 | 308,263 | 1,757,043 | 1,594,018 | Mar 01 09:18 PM |
| CERS | Greenman William Mariner | President and CEO | Aug 03 '21 | Option Exercise | 2.08 | 100,000 | 208,000 | 1,518,672 | Aug 05 05:12 PM |
| CERS | Greenman William Mariner | President and CEO | Apr 16 '21 | Option Exercise | 2.70 | 550,000 | 1,485,000 | 1,652,531 | Apr 20 09:15 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 15 '21 | Sale | 6.38 | 156,407 | 997,517 | 975,257 | Mar 16 07:37 PM |
| CERS | Greenman William Mariner | President and CEO | Aug 26 '20 | Option Exercise | 3.00 | 100,000 | 300,000 | 925,849 | Aug 26 08:23 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 17 '20 | Sale | 3.59 | 108,011 | 388,267 | 699,590 | Mar 24 09:19 PM |
| CERS | Greenman William Mariner | President and CEO | Sep 24 '19 | Option Exercise | 2.15 | 40,000 | 86,000 | 678,485 | Sep 24 08:42 PM |
| CERS | Greenman William Mariner | President and CEO | Jun 04 '19 | Buy | 4.60 | 10,000 | 46,000 | 638,485 | Jun 04 05:09 PM |
| CERS | Greenman William Mariner | President and CEO | Apr 22 '19 | Option Exercise | 1.06 | 100 | 106 | 628,485 | Apr 22 05:27 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 12 '19 | Sale | 6.48 | 7,781 | 50,421 | 543,771 | Mar 13 08:38 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 13 '19 | Sale | 5.90 | 37,678 | 222,287 | 561,277 | Mar 13 08:38 PM |
| CERS | Greenman William Mariner | President and CEO | Dec 28 '18 | Option Exercise | 0.79 | 150,000 | 118,500 | 549,601 | Dec 31 04:01 PM |
| CERS | Greenman William Mariner | President and CEO | Sep 27 '18 | Option Exercise | 4.19 | 40,000 | 167,600 | 399,601 | Oct 01 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 12 '18 | Sale | 4.80 | 7,735 | 37,138 | 336,685 | Mar 13 09:28 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 13 '18 | Sale | 5.05 | 10,031 | 50,657 | 354,779 | Mar 13 09:28 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 15 '17 | Sale | 4.21 | 8,786 | 36,990 | 316,938 | Mar 15 08:18 PM |
| CERS | Greenman William Mariner | President and CEO | Sep 30 '16 | Option Exercise | 5.55 | 55,000 | 305,250 | 298,283 | Oct 03 06:04 AM |
| CERS | Greenman William Mariner | President and CEO | Nov 10 '14 | Buy | 3.93 | 21,800 | 85,598 | 184,595 | Nov 12 09:23 PM |
| CERS | Greenman William Mariner | President and CEO | May 05 '14 | Option Exercise | 2.28 | 46,500 | 106,020 | 209,295 | May 06 09:41 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 26 '14 | Option Exercise | 3.52 | 50 | 176 | 162,795 | Mar 28 07:28 PM |
| CERS | Greenman William Mariner | President and CEO | Mar 03 '14 | Option Exercise | 2.28 | 53,500 | 121,980 | 162,745 | Mar 04 06:11 AM |
| CERS | Greenman William Mariner | President and CEO | Aug 22 '13 | Option Exercise | 4.25 | 17,250 | 73,312 | 143,065 | Aug 23 02:08 PM |
| CERS | Greenman William Mariner | President and CEO | Nov 19 '12 | Buy | 3.02 | 3,200 | 9,664 | 128,681 | Nov 20 08:18 PM |
| CERS | Greenman William Mariner | President and CEO | Nov 16 '12 | Buy | 2.85 | 13,800 | 39,387 | 125,481 | Nov 16 08:50 PM |
| CERS | Greenman William Mariner | President and CEO | May 03 '11 | Buy | 2.83 | 10,000 | 28,250 | 99,661 | May 04 04:24 PM |
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