X0306 4/A 2018-06-06 2018-06-22 0 0001020214 CERUS CORP CERS 0001323113 Swisher Daniel N JR C/O CERUS CORPORATION 2550 STANWELL DRIVE CONCORD CA 94520 1 0 0 0 Option (Right to Buy) 6.77 2018-06-06 4 A 0 24014 A 2028-06-05 Common Stock 24014 24014 D Restricted Stock Unit 2018-06-06 4 A 0 12758 A Common Stock 12758 12758 D The option shall vest in twelve (12) equal monthly installments on each monthly anniversary of the transaction date with the final vesting date being the earlier of (a) one year from the date of grant, or (b) the day prior to the 2019 Annual Meeting of Stockholders. Not applicable. Each restricted stock unit represents a contingent right to receive one (1) share of Cerus Common Stock. The restricted stock unit shall vest on the earlier of (a) one year from the date of grant, or (b) the day prior to the 2019 Annual Meeting of Stockholders. Daniel Swisher by Chrystal Menard, attorney-in-fact 2018-07-11