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Stock Insider Trading Activity of Greenman William Mariner
Greenman William Mariner
Sell
President and CEO
CERS Mar 12, 2026
Avg Cost/Share
$1.66
Shares
447,757
Total Value
$742,022.90
Owned After
4,998,493
SEC Form 4
Greenman William Mariner
Sell
President and CEO
CERS Mar 6, 2026
Avg Cost/Share
$2.01
Shares
78,187
Total Value
$156,804.03
Owned After
4,998,493
SEC Form 4
Greenman William Mariner
Sell
President and CEO
CERS Mar 13, 2025
Avg Cost/Share
$1.45
Shares
193,913
Total Value
$281,173.85
Owned After
4,998,493
Greenman William Mariner
Sell
President and CEO
CERS Mar 6, 2025
Avg Cost/Share
$1.50
Shares
60,984
Total Value
$91,354.03
Owned After
4,998,493
SEC Form 4
Greenman William Mariner
Sell
President and CEO
CERS Mar 3, 2025
Avg Cost/Share
$1.55
Shares
23,023
Total Value
$35,651.12
Owned After
4,998,493
SEC Form 4
Greenman William Mariner
Sell
President and CEO
CERS Mar 12, 2024
Avg Cost/Share
$2.04
Shares
125,926
Total Value
$256,377.20
Owned After
4,998,493
| Insider | Ticker | Relationship | Date | Transaction | Avg Cost | Shares | Total Value | Owned After | SEC Forms |
|---|---|---|---|---|---|---|---|---|---|
| Greenman William Mariner | CERS | President and CEO | Mar 12, 2026 | Sell | $1.66 | 447,757 | $742,022.90 | 4,998,493 | |
| Greenman William Mariner | CERS | President and CEO | Mar 6, 2026 | Sell | $2.01 | 78,187 | $156,804.03 | 4,998,493 | |
| Greenman William Mariner | CERS | President and CEO | Mar 13, 2025 | Sell | $1.45 | 193,913 | $281,173.85 | 4,998,493 | |
| Greenman William Mariner | CERS | President and CEO | Mar 6, 2025 | Sell | $1.50 | 60,984 | $91,354.03 | 4,998,493 | |
| Greenman William Mariner | CERS | President and CEO | Mar 3, 2025 | Sell | $1.55 | 23,023 | $35,651.12 | 4,998,493 | |
| Greenman William Mariner | CERS | President and CEO | Mar 12, 2024 | Sell | $2.04 | 125,926 | $256,377.20 | 4,998,493 |