Richard J Benjamin
CIK 1296322 · View on SEC EDGAR ↗
First SEC filing: Aug. 7, 2024 · Latest: Aug. 7, 2024
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Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 12, 2026 | CERS | S 10b5-1 | 101,740 | $1.66 | $168,888 | 777,361 Direct | -11.57% | Disposed | 72.0% (price as of 2026-08-20) |
| March 9, 2026 | CERS | S 10b5-1 | 40,426 | $1.88 | $76,001 | 879,101 Direct | -4.40% | Disposed | 51.9% (price as of 2026-08-20) |
| March 9, 2026 | CERS | S 10b5-1 | 40,426 | $1.88 | $76,001 | 879,101 Direct | -4.40% | Disposed | 51.9% (price as of 2026-08-20) |
| March 6, 2026 | CERS | S 10b5-1 | 24,235 | $2.01 | $48,712 | 919,527 Direct | -2.57% | Disposed | 42.0% (price as of 2026-08-20) |
| March 6, 2026 | CERS | S 10b5-1 | 24,235 | $2.01 | $48,712 | 919,527 Direct | -2.57% | Disposed | 42.0% (price as of 2026-08-20) |
| March 5, 2026 | CERS | S 10b5-1 | 61,233 | $2.06 | $126,140 | 943,762 Direct | -6.09% | Disposed | 38.6% (price as of 2026-08-20) |
| March 5, 2026 | CERS | S 10b5-1 | 61,233 | $2.06 | $126,140 | 943,762 Direct | -6.09% | Disposed | 38.6% (price as of 2026-08-20) |
| March 14, 2025 | CERS | S 10b5-1 | 30,075 | $1.45 | $43,609 | 685,775 Direct | -4.20% | Disposed | 96.9% (price as of 2026-08-20) |
| March 13, 2025 | CERS | S 10b5-1 | 18,949 | $1.45 | $27,476 | 715,850 Direct | -2.58% | Disposed | 96.9% (price as of 2026-08-20) |
| March 7, 2025 | CERS | S 10b5-1 | 26,139 | $1.50 | $39,208 | 734,799 Direct | -3.44% | Disposed | 90.3% (price as of 2026-08-20) |
| March 4, 2025 | CERS | S 10b5-1 | 6,292 | $1.55 | $9,753 | 394,373 Direct | -1.57% | Disposed | 84.2% (price as of 2026-08-20) |
| March 3, 2025 | CERS | S 10b5-1 | 51,254 | $1.58 | $80,981 | 400,665 Direct | -11.34% | Disposed | 80.7% (price as of 2026-08-20) |
| Aug. 2, 2024 | CERS | S 10b5-1 | 21,605 | $2.50 | $54,012 | 438,007 Direct | -4.70% | Disposed | 14.2% (price as of 2026-08-20) |
| March 14, 2024 | CERS | S 10b5-1 | 17,738 | $1.97 | $34,944 | 459,612 Direct | -3.72% | Disposed | 44.9% (price as of 2026-08-20) |
| March 13, 2024 | CERS | S 10b5-1 | 17,377 | $2.06 | $35,797 | 477,350 Direct | -3.51% | Disposed | 38.6% (price as of 2026-08-20) |
| March 8, 2024 | CERS | S 10b5-1 | 29,378 | $2.40 | $70,507 | 478,061 Direct | -5.79% | Disposed | 19.0% (price as of 2026-08-20) |
| March 13, 2023 | CERS | S 10b5-1 | 10,000 | $2.78 | $27,800 | 347,439 Direct | -2.80% | Disposed | 2.7% (price as of 2026-08-20) |
| March 13, 2023 | CERS | S 10b5-1 | 5,747 | $2.80 | $16,092 | 357,439 Direct | -1.58% | Disposed | 2.0% (price as of 2026-08-20) |
| March 13, 2023 | CERS | S 10b5-1 | 9,606 | $2.80 | $26,897 | 346,519 Direct | -2.70% | Disposed | 2.0% (price as of 2026-08-20) |
| Aug. 9, 2022 | CERS | S 10b5-1 | 10,000 | $5.12 | $51,200 | 172,665 Direct | -5.47% | Disposed | -44.2% (price as of 2026-08-20) |
| March 14, 2022 | CERS | S 10b5-1 | 5,982 | $5.04 | $30,149 | 182,665 Direct | -3.17% | Disposed | -43.4% (price as of 2026-08-20) |
| March 14, 2022 | CERS | S 10b5-1 | 8,173 | $5.04 | $41,192 | 171,980 Direct | -4.54% | Disposed | -43.4% (price as of 2026-08-20) |
| March 14, 2022 | CERS | S 10b5-1 | 16,152 | $5.04 | $81,406 | 157,383 Direct | -9.31% | Disposed | -43.4% (price as of 2026-08-20) |
| Nov. 3, 2021 | CERS | S 10b5-1 | 31,667 | $7.35 | $232,752 | 76,035 Direct | -29.40% | Disposed | -61.2% (price as of 2026-08-20) |
| Nov. 3, 2021 | CERS | S 10b5-1 | 33,333 | $7.35 | $244,998 | 76,035 Direct | -30.48% | Disposed | -61.2% (price as of 2026-08-20) |
| Nov. 3, 2021 | CERS | S 10b5-1 | 100,000 | $7.90 | $790,000 | 76,035 Direct | -56.81% | Disposed | -63.9% (price as of 2026-08-20) |
| March 15, 2021 | CERS | S 10b5-1 | 20,000 | $6.34 | $126,800 | 76,035 Direct | -20.83% | Disposed | -55.0% (price as of 2026-08-20) |
| March 15, 2021 | CERS | S 10b5-1 | 7,989 | $6.38 | $50,970 | 96,035 Direct | -7.68% | Disposed | -55.3% (price as of 2026-08-20) |
| March 15, 2021 | CERS | S 10b5-1 | 15,786 | $6.38 | $100,715 | 81,254 Direct | -16.27% | Disposed | -55.3% (price as of 2026-08-20) |
| March 15, 2021 | CERS | S 10b5-1 | 5,556 | $6.38 | $35,447 | 52,040 Direct | -9.65% | Disposed | -55.3% (price as of 2026-08-20) |
| Aug. 24, 2020 | CERS | S 10b5-1 | 100,000 | $7.90 | $790,000 | 41,763 Direct | -70.54% | Disposed | -63.9% (price as of 2026-08-20) |
| July 7, 2020 | CERS | S 10b5-1 | 31,666 | $7.20 | $227,995 | 41,763 Direct | -43.12% | Disposed | -60.3% (price as of 2026-08-20) |
| July 7, 2020 | CERS | S 10b5-1 | 22,917 | $7.20 | $165,002 | 41,763 Direct | -35.43% | Disposed | -60.3% (price as of 2026-08-20) |
| July 7, 2020 | CERS | S 10b5-1 | 100,000 | $7.20 | $720,000 | 41,763 Direct | -70.54% | Disposed | -60.3% (price as of 2026-08-20) |
| March 17, 2020 | CERS | S 10b5-1 | 17,497 | $3.59 | $62,814 | 41,763 Direct | -29.53% | Disposed | -20.5% (price as of 2026-08-20) |
| March 17, 2020 | CERS | S 10b5-1 | 6,051 | $3.59 | $21,723 | 14,260 Direct | -29.79% | Disposed | -20.5% (price as of 2026-08-20) |
| March 17, 2020 | CERS | S 10b5-1 | 3,022 | $3.59 | $10,849 | 4,478 Direct | -40.29% | Disposed | -20.5% (price as of 2026-08-20) |
| Aug. 7, 2019 | CERS | S | 16,444 | $5.01 | $82,384 | 0 Direct | -100.00% | Disposed | -43.0% (price as of 2026-08-20) |
| March 13, 2019 | CERS | S | 5,979 | $5.90 | $35,276 | 16,444 Direct | -26.66% | Disposed | -51.6% (price as of 2026-08-20) |
| March 13, 2019 | CERS | S | 2,832 | $5.90 | $16,709 | 6,589 Direct | -30.06% | Disposed | -51.6% (price as of 2026-08-20) |
Showing latest 100 of 125 transactions
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| March 3, 2025 | CERS | Restricted Stock Unit | Common Stock (13,912) | — | — | 13,912 | Disposed |
| Feb. 26, 2025 | CERS | Restricted Stock Unit | Common Stock (13,912) | — | — | 13,912 | Acquired |
| March 12, 2024 | CERS | Restricted Stock Unit | Common Stock (16,666) | — | — | 16,666 | Disposed |
| March 12, 2023 | CERS | Restricted Stock Unit | Common Stock (16,667) | — | — | 16,667 | Disposed |
| March 12, 2023 | CERS | Restricted Stock Unit | Common Stock (23,460) | — | — | 23,460 | Disposed |
| March 12, 2022 | CERS | Restricted Stock Unit | Common Stock (16,667) | — | — | 16,667 | Disposed |
| March 12, 2022 | CERS | Restricted Stock Unit | Common Stock (22,770) | — | — | 22,770 | Disposed |
| March 12, 2022 | CERS | Restricted Stock Unit | Common Stock (45,000) | — | — | 45,000 | Disposed |
| March 1, 2022 | CERS | Option (Right to Buy) | Common Stock (105,000) | $5.76 | Feb. 28, 2032 | 105,000 | Acquired |
| Nov. 3, 2021 | CERS | Option (Right to Buy) | Common Stock (31,667) | $4.32 | Feb. 28, 2028 | 31,667 | Disposed |
| Nov. 3, 2021 | CERS | Option (Right to Buy) | Common Stock (33,333) | $4.33 | Feb. 28, 2027 | 33,333 | Disposed |
| Nov. 3, 2021 | CERS | Option (Right to Buy) | Common Stock (100,000) | $4.72 | Aug. 31, 2025 | 100,000 | Disposed |
| March 12, 2021 | CERS | Restricted Stock Unit | Common Stock (22,770) | — | — | 22,770 | Disposed |
| March 12, 2021 | CERS | Restricted Stock Unit | Common Stock (45,000) | — | — | 45,000 | Disposed |
| March 12, 2021 | CERS | Restricted Stock Unit | Common Stock (15,833) | — | — | 15,833 | Disposed |
| March 1, 2021 | CERS | Restricted Stock Unit | Common Stock (50,000) | — | — | 50,000 | Acquired |
| March 1, 2021 | CERS | Option (Right to Buy) | Common Stock (100,000) | $6.52 | Feb. 28, 2031 | 100,000 | Acquired |
| Aug. 24, 2020 | CERS | Option (Right to Buy) | Common Stock (100,000) | $4.72 | Aug. 31, 2025 | 100,000 | Disposed |
| July 7, 2020 | CERS | Option (Right to Buy) | Common Stock (31,666) | $4.32 | Feb. 28, 2028 | 31,666 | Disposed |
| July 7, 2020 | CERS | Option (Right to Buy) | Common Stock (22,917) | $4.33 | Feb. 28, 2027 | 22,917 | Disposed |
| July 7, 2020 | CERS | Option (Right to Buy) | Common Stock (100,000) | $4.72 | Aug. 31, 2025 | 100,000 | Disposed |
| March 12, 2020 | CERS | Restricted Stock Unit | Common Stock (45,000) | — | — | 45,000 | Disposed |
| March 12, 2020 | CERS | Restricted Stock Unit | Common Stock (15,833) | — | — | 15,833 | Disposed |
| March 12, 2020 | CERS | Restricted Stock Unit | Common Stock (7,500) | — | — | 7,500 | Disposed |
| March 2, 2020 | CERS | Restricted Stock Unit | Common Stock (69,000) | — | — | 69,000 | Acquired |
| March 2, 2020 | CERS | Option (Right to Buy) | Common Stock (138,000) | $5.11 | March 1, 2030 | 138,000 | Acquired |
| June 6, 2019 | CERS | Restricted Stock Unit | Common Stock (135,000) | — | — | 135,000 | Acquired |
| March 12, 2019 | CERS | Restricted Stock Unit | Common Stock (15,834) | — | — | 15,834 | Disposed |
| March 12, 2019 | CERS | Restricted Stock Unit | Common Stock (7,500) | — | — | 7,500 | Disposed |
| March 10, 2019 | CERS | Restricted Stock Unit | Common Stock (3,000) | — | — | 3,000 | Disposed |
| Aug. 28, 2018 | CERS | Option (Right to Buy) | Common Stock (50,000) | $4.72 | Aug. 31, 2025 | 50,000 | Disposed |
| Aug. 14, 2018 | CERS | Option (Right to BUy) | Common Stock (35,416) | $4.33 | Feb. 27, 2027 | 35,416 | Disposed |
| March 12, 2018 | CERS | Restricted Stock Unit | Common Stock (7,500) | — | — | 7,500 | Disposed |
| March 10, 2018 | CERS | Restricted Stock Unit | Common Stock (3,000) | — | — | 3,000 | Disposed |
| March 1, 2018 | CERS | Restricted Stock Unit | Common Stock (47,500) | — | — | 47,500 | Acquired |
| March 1, 2018 | CERS | Option (Right to Buy) | Common Stock (95,000) | $4.32 | Feb. 28, 2028 | 95,000 | Acquired |
| March 10, 2017 | CERS | Restricted Stock Unit | Common Stock (3,000) | — | — | 3,000 | Disposed |
| March 1, 2017 | CERS | Restricted Stock Unit | Common Stock (22,500) | — | — | 22,500 | Acquired |
| March 1, 2017 | CERS | Option (Right to Buy) | Common Stock (100,000) | $4.33 | Feb. 28, 2027 | 100,000 | Acquired |
| March 1, 2016 | CERS | Option (Right to Buy) | Common Stock (45,000) | $5.06 | Feb. 28, 2026 | 45,000 | Acquired |
| March 1, 2016 | CERS | Restricted Stock Unit | Common Stock (9,000) | — | — | 9,000 | Acquired |
| Sept. 1, 2015 | CERS | Option (Right to Buy) | Common Stock (350,000) | $4.72 | Aug. 31, 2025 | 350,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $508,690 | — | $713,844 | — | $276,911 | — | $7,108 | $1,506,553 |
| 2024 | $493,077 | $44,377 | $588,600 | — | — | — | $3,564 | $1,129,618 |
| 2023 | $489,126 | — | $738,600 | — | $110,942 | — | $3,614 | $1,342,282 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.