$CERS

$2.40 +$0.00 (0.0%) After hours

$CERS Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 201.5M shares outstanding

Who owns CERS?

By type of holder

Institutions 74.4% Insiders 5.9% Everyone else 19.7%

Concentration Top 10 holders own 40.4%

BlackRock, Inc. 11.0% · ARK Investment Management LLC 8.9%

Institutional ownership

74.4%

-0.9 pts vs last qtr

Institutional holders

183

+13 vs last qtr

Net shares bought

−1.8M

by institutions in Q2 2026

New / sold out

33 / 20

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Mackenzie Financial Corp +3.0M
D. E. Shaw & Co., Inc. +1.8M

Biggest sellers in Q2 2026

Soleus Capital Management, L.P. −8.3M
Baker Bros. Advisors LP −3.6M

Who is planning to sell?

Notices of proposed sale, last 12 months

$830K

9 notices from 5 people

Shares covered

358.5K

0.18% of the company

Arranged in advance

82%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Richard J Benjamin Officer 10b5-1 $417K
Vivek K Jayaraman Officer 10b5-1 $153K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+87.2%

+7.21% a year

Each share's claim on the business

−46.6%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $173M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years79% 3–5 years2% 1–3 years10% Under 1 year8%

Quarterly turnover

14.5%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting CERS on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	22.2M	11.02%	+639.7K (+3.0%)	≤2021	0.0%
Shares held by quarter Peak holding22.2M (Q2'26) Change over 8 quarters+7.5M Share of the company11.020% BlackRock, Inc.'s full portfolio →
AI ARK Investment Management LLC	17.9M	8.90%	−1.2M (−6.4%)	≤2021	0.3%
Shares held by quarter Peak holding20.8M (Q4'24) Change over 8 quarters−292.9K Share of the company8.900% ARK Investment Management LLC's full portfolio →

BlackRock, Inc.

22.2M

% of company

11.02%

Change vs last qtr

+639.7K (+3.0%)

Held since

≤2021

ARK Investment Management LLC

17.9M

% of company

8.90%

Change vs last qtr

−1.2M (−6.4%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Cerus Corp, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting CERS on Form N-PORT; together they hold 28.3% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
AI ARK Innovation ETF ARK ETF Trust	$17.8M	8.3M	4.11%	0.32%	July 31, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$17.7M	6.1M	3.01%	0.00%	June 30, 2026

ARK Innovation ETF

ARK ETF Trust

Position value

$17.8M

% of company

4.11%

% of the fund

0.32%

As of

July 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$17.7M

% of company

3.01%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Cerus Corp and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
GW Greenman William Mariner Insider	5.1M	2.51%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company2.510% Greenman William Mariner's insider activity →
JV Jayaraman Vivek K Insider	2.2M	1.11%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.110% Jayaraman Vivek K's insider activity →

Greenman William Mariner

Insider

5.1M

% of company

2.51%

Change vs last qtr

—

Held since

—

Jayaraman Vivek K

Insider

2.2M

% of company

1.11%

Change vs last qtr

—

Held since

—

11 more holders behind a free account

See every insider and 5%+ holder of Cerus Corp.

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