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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 12 '26 | Sale | 1.66 | 447,757 | 742,023 | 4,998,493 | Mar 16 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 06 '26 | Sale | 2.01 | 78,187 | 156,804 | 5,446,250 | Mar 09 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 14 '25 | Sale | 1.45 | 122,827 | 178,099 | 4,115,845 | Mar 17 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 13 '25 | Sale | 1.45 | 71,086 | 103,075 | 4,238,672 | Mar 17 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 07 '25 | Sale | 1.50 | 60,984 | 91,354 | 4,309,758 | Mar 10 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 04 '25 | Sale | 1.55 | 23,023 | 35,651 | 3,230,000 | Mar 05 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 03 '25 | Option Exercise | 0.00 | 115,274 | 0 | 3,253,023 | Mar 05 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 14 '24 | Sale | 2.02 | 63,611 | 128,195 | 3,181,281 | Mar 14 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 13 '24 | Sale | 2.06 | 62,315 | 128,182 | 3,244,892 | Mar 14 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 12 '24 | Option Exercise | 0.00 | 129,332 | 0 | 3,307,207 | Mar 14 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 13 '23 | Sale | 2.80 | 60,480 | 169,344 | 2,616,411 | Mar 14 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 12 '23 | Option Exercise | 0.00 | 344,384 | 0 | 2,681,078 | Mar 14 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 14 '22 | Sale | 5.04 | 165,021 | 831,635 | 1,885,141 | Mar 15 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 12 '22 | Option Exercise | 0.00 | 641,390 | 0 | 2,000,468 | Mar 15 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Feb 25 '22 | Option Exercise | 3.75 | 760,000 | 2,850,000 | 1,902,281 | Mar 01 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Feb 25 '22 | Sale | 5.70 | 308,263 | 1,757,042 | 1,594,018 | Mar 01 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Aug 03 '21 | Option Exercise | 2.08 | 200,000 | 416,000 | 1,518,672 | Aug 05 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Apr 16 '21 | Option Exercise | 2.70 | 1,100,000 | 2,970,000 | 1,652,531 | Apr 20 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 15 '21 | Sale | 6.38 | 156,407 | 997,517 | 975,257 | Mar 16 12:00 AM |
| CERS | Greenman William Mariner | President and CEO | Mar 12 '21 | Option Exercise | 0.00 | 655,392 | 0 | 1,155,015 | Mar 16 12:00 AM |