Greenman William Mariner 4

What Happened
William Greenman, President, CEO and Director of Cerus Corp (CERS), disposed of 447,757 shares on March 12, 2026. The weighted average sale price was $1.66 per share for total proceeds of roughly $742,023. The filing reports an open-market sale (transaction code S) executed to cover tax-withholding and related brokerage fees tied to the vesting of restricted stock units.

Key Details

• Transaction date: March 12, 2026; Form 4 filed March 16, 2026 (timely — within two business days).
• Price: weighted average $1.66 per share; individual sales ranged from $1.62 to $1.73 (footnote F2).
• Shares sold: 447,757; proceeds ≈ $742,023.
• Shares owned after transaction: not specified in the excerpt of this filing.
• Footnotes: F1 states the sale was made pursuant to a 10b5-1 instruction elected at grant to cover statutory tax withholding and brokerage fees for RSU vesting (not a discretionary sale). F2 notes the weighted-average price and offers that the filer can provide a per-price breakdown on request.

Context
This was a routine, non-discretionary sale to satisfy tax-withholding obligations from RSU vesting rather than an independent decision to liquidate equity holdings; such transactions are common and do not by themselves signal management’s view of the company’s prospects.