Frank Witney Cerus Corp (CERS) insider trading activity

Frank Witney is of CERUS CORP. Currently has a direct ownership of 280,059 shares of CERS, which is worth approximately $394,883. The most recent transaction as insider was on Jun 03, 2025, when has been sold 60,000 shares (Common Stock) at a price of $0.0 per share, resulting in proceeds of $0. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 280K

27.27% 3M change

27.27% 12M change

Total Value Held $394,883

Frank Witney Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Jun 03 2025	BUY Grant, award, or other acquisition	-	60,000 Added 17.64%	280,059 Common Stock
Jun 05 2024	BUY Grant, award, or other acquisition	$200,000 $5.0 p/Share	40,000 Added 15.38%	220,059 Common Stock
May 09 2024	BUY Open market or private purchase	$37,800 $1.89 p/Share	20,000 Added 10.0%	180,059 Common Stock
Jun 07 2023	BUY Grant, award, or other acquisition	$200,000 $5.0 p/Share	40,000 Added 19.99%	160,059 Common Stock
Jun 01 2022	BUY Grant, award, or other acquisition	-	20,454 Added 14.56%	120,059 Common Stock
Jun 02 2021	BUY Grant, award, or other acquisition	-	14,888 Added 13.0%	99,605 Common Stock
Jun 01 2021	BUY Exercise of conversion of derivative security	-	13,228 Added 13.51%	84,717 Common Stock

Also insider at

PKI

PERKINELMER INC Healthcare

LAB

STANDARD BIOTOOLS INC. Healthcare

DNAY

Codex DNA, Inc. Healthcare

Frank Witney

Waltham, MA

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