Boundless Bio (BOLD) executive compensation, 2026 proxy

Zachary D. Hornby, President, Chief Executive Officer, and Director, was paid $1.6M in 2025, down 74% from $6.1M the year before.

Filed
April 28, 2026
Annual meeting
June 15, 2026
Pay year
2025
Named executives
3
CEO total pay
$1.6M-74% vs prior year
CEO Target Bonus
55%Percentage of annual base salary
CEO Base Salary
$638,000For fiscal year 2025
Bonus Plan Funding Mr. Hornby
95%Of target level
Bonus Plan Funding Other NEOs
100%Of target level

How Hornby was paid

$1.6M 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.

Salary40%Option awards39%Non-equity incentive21%All other compensation0%

Named executive officers

ExecutiveTotal
Zachary D. HornbyPresident, Chief Executive Officer, and Director$1,603,205
Robert Doebele, M.D., Ph.D.Chief Medical Officer$978,341
Christian Hassig, Ph.D.Chief Scientific Officer$875,350

What changed and why

  • $6.1MCEO total compensation decreased from $6,054,873 in 2024 to $1,603,205 in 2025 due to lower option award values.
  • Base salaries for executive officers were increased effective January 1, 2025.
  • $638KMr. Hornby received a base salary of $638,000 and option awards valued at $628,350 in 2025.
  • 95%Annual performance bonuses for 2025 were funded at 95% of target for Mr. Hornby and 100% for other NEOs.
  • Dr. Robert Doebele joined the company as Chief Medical Officer on February 3, 2025.

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.