Cerus Corporation (CERS)
Nasdaq: CERS · Surgical & Medical Instruments & Apparatus · Concord, CA · filing with the SEC since 1996
Who owns Cerus Corporation
As filed with the SECHolders of 5% or more
1
ARK Investment Management LLC holds 8.95% of Common Stock, as its SCHEDULE 13G/A filed Aug 14, 2026 says.
Directors and officers
11
report now, of 18 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 1 named at left.
Holders of 5% or moreshare of the class, as filed
ARK Investment Management LLC
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock · 10.1% in Jul 30, 2025
Baker Bros. Advisors LP
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock, par value $0.001 per share · reported falling below 5%, from 5.2% in Nov 14, 2025
Soleus Capital Master Fund, L.P.
SCHEDULE 13G/A · filed Aug 13, 2026 · Common Stock, par value $0.001 per share · reported falling below 5%, from 5.1% in Mar 24, 2026
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%
What CERS reports owning in othersstakes of 5% or more, and other ties
1 subsidiary in 1 country, from the list filed with the 10-K filed Mar 2, 2026.
Insider tradesForm 4
25sales
0purchases
24sales on a scheduled plan
6people selling
$3.3Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window6 of 18 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Greenman William Mariner | President and CEO | 3 | $1.2M | 3 | 0 | $0 |
| Benjamin Richard J | Chief Medical Officer | 7 | $700,000 | 7 | 0 | $0 |
| Jayaraman Vivek K | Chief Executive Officer | 6 | $600,000 | 6 | 0 | $0 |
| Green Kevin Dennis | Chief Financial Officer | 4 | $500,000 | 4 | 0 | $0 |
| Menard Chrystal | Chief Legal Officer | 4 | $300,000 | 4 | 0 | $0 |
| Bjerkholt Eric | director | 1 | $100,000 | 0 | 0 | $0 |