Cerus names William “Obi” Greenman executive chairman after CEO exit
CERS•Cerus names new executive chairman
- Cerus named William “Obi” Greenman executive chairman, effective July 1, 2026.
- Greenman stepped down as president and CEO, ending his tenure as board chairman.
- The role runs through May 31, 2027, with an expected time commitment averaging about 60% of a full-time schedule.



