INSMED (INSM) executive compensation, 2026 proxy

William H. Lewis, CEO, was paid $14.5M in 2025, up 32% from $10.9M the year before. The CEO-to-median-employee pay ratio was 51:1, on median employee pay of $284,512.

Filed
April 1, 2026
Annual meeting
May 13, 2026
Pay year
2025
Named executives
5
CEO total pay
$14.5M+32% vs prior year
CEO to median employee
51:1median $284,512
CEO pay in equity
83%$12M in awards
Prior say-on-pay support
97%of votes cast
CEO Target Bonus
$1,709,1001
Median Employee Pay
$284,512
Say-on-Pay Support
97%
Pay Ratio
51:1Exact ratio 50.85

How Lewis was paid

$14.5M in total for 2025, as reported in the Summary Compensation Table. Equity awards are valued at grant, not at what they turned out to be worth.

Salary6%Stock awards21%Option awards62%Non-equity incentive10%All other compensation1%

Named executive officers

ExecutiveTotal
William H. LewisCEO$14,467,393
Sara BonsteinChief Financial Officer$4,617,429
Roger AdsettChief Operating Officer$4,691,405
Martina Flammer, M.D.Chief Medical Officer$4,716,513
Michael A. SmithChief Legal Officer$4,138,160

What changed and why

  • $14.5MCEO total compensation increased to $14,467,393 in 2025 from $10,943,571 in 2024.
  • 97%Advisory say-on-pay support reached approximately 97% at the 2025 Annual Meeting.
  • PSUs granted on December 15, 2025 were excluded from stock awards as conditions were not probable.

About this page

Figures are automated and can be wrong; check the filing for the exact numbers. Totals follow SEC rules, which value stock and option awards at grant. Read the DEF 14A proxy statement for footnotes and the compensation committee's full reasoning.