William Mariner Greenman - 02 Mar 2026 Form 4 Insider Report for CERUS CORP (CERS)

Signature
William M. Greenman, by Chrystal N. Jensen, attorney-in-fact
Issuer symbol
CERS
Transactions as of
02 Mar 2026
Net transactions value
$0
Form type
4
Filing time
04 Mar 2026, 20:33:35 UTC
Previous filing
17 Mar 2025
Next filing
09 Mar 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Greenman William Mariner President and CEO, Director C/O CERUS CORPORATION, 1220 CONCORD AVE SUITE 600, CONCORD William M. Greenman, by Chrystal N. Jensen, attorney-in-fact 04 Mar 2026 0001377258

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CERS Common Stock Award +1,200,000 +29% $0.000000* 5,331,167 02 Mar 2026 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 Each RSU represents a contingent right to receive one share of common stock of the Issuer. The RSUs vest in two annual installments with 34% of the grant vesting on March 12, 2027, and 66% of the grant vesting on March 12, 2028, subject to the Reporting Person's continuous service to the Issuer through such vesting date.
F2 Includes 5,318 and 10,004 shares purchased under Issuer's Employee Stock Purchase Plan on 08/29/25 and 02/27/26, respectively.