Cerus (CERS)
Supplies illuminators and disposable kits that inactivate pathogens in donated platelets, plasma and fibrinogen concentrate.
$2.66
After hours−0.01 (−0.24%)
At close$2.67(+4.10%)
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13F · 13D/G · Form 4
| Institutions | ≈ 75.16% | 151.47M shares | |
|---|---|---|---|
| 191 holders · as of Jun 30, 2026 · largest filers plus last quarter's tail | |||
| Insiders | 2.88% | 5.80M shares | |
| 11 holders · as of Aug 17, 2026 | |||
| Other | ≈ 21.96% | 44.25M shares | |
| remainder | |||
201.52M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.
13F, as of Jun 30, 2026
191 holders · 151.47M shares · 36 new positions · 108 increased · 53 reduced · 18 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 22.22M | 11.02% | +639.7K | Aug 7, 2026 |
| Ark Investment Management LLC | 17.93M | 8.90% | −1.23M | Aug 14, 2026 |
| Vanguard Capital Management LLC | 8.56M | 4.25% | +431.6K | Aug 13, 2026 |
| Baker Bros. Advisors LP | 6.40M | 3.17% | −3.61M | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | 5.49M | 2.72% | +1.75M | Aug 14, 2026 |
| Geode Capital Management, LLC | 5.12M | 2.54% | +481.6K | Aug 12, 2026 |
| State Street Corp | 4.75M | 2.36% | +539.1K | Aug 7, 2026 |
| Senvest Management, LLC | 4.61M | 2.29% | +500.0K | Aug 14, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| ARK Investment Management LLC | 10.05% | 19.21M | 13G | Jul 30, 2025 |
| Baker Bros. Advisors LP | 5.20% | 10.01M | 13G | Nov 14, 2025 |
| Soleus Capital Master Fund, L.P. | 5.10% | 9.83M | 13G | Mar 24, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 17, 2026 | Chrystal Jensenofficer: Chief Legal Officer | Sale | 30,000 | $2.98 | 936,657 |
| Jul 16, 2026 | Vivek K. Jayaramanofficer: Chief Executive Officer | Sale | 16,666 | $3.16 | 2,232,211 |
| Jun 30, 2026 | William Mariner Greenmandirector, officer: President and CEO | Sale | 101,919 | $2.94 | 5,053,036 |
| Jun 30, 2026 | Chrystal Jensenofficer: Chief Legal Officer | Sale | 24,329 | $2.94 | 966,657 |
| Jun 30, 2026 | Vivek K. Jayaramanofficer: Chief Operating Officer | Sale | 42,359 | $2.94 | 1,694,348 |
| Jun 30, 2026 | Kevin Dennis Greenofficer: Chief Financial Officer | Sale | 33,676 | $2.94 | 1,062,188 |
| Jun 9, 2026 | Eric Bjerkholtdirector | Sale | 20,454 | $2.60 | 261,679 |
| May 29, 2026 | Vivek K. Jayaramanofficer: Chief Operating Officer | Sale | 16,667 | $3.00 | 1,656,707 |
| May 1, 2026 | Vivek K. Jayaramanofficer: Chief Operating Officer | Sale | 16,667 | $3.00 | 1,673,374 |
| Mar 12, 2026 | Richard J. Benjaminofficer: Chief Medical Officer | Sale | 101,740 | $1.66 | 777,361 |
House and Senate disclosures
Not reported.