Insmed shares slip as CFO Sara Bonstein steps down
INSM•Insmed shares fell more than 3% to $107.59 premarket after CFO Sara Bonstein announced she will step down effective Oct. 30; the company reaffirmed its FY26 guidance and began a search for her successor.
1. CFO transition
Bonstein will remain through month-end to support a smooth transition through Insmed’s third-quarter results reporting on Oct. 29. Before joining Insmed, she served as CFO at OncoSec Medical.
