Orchestra BioMed (OBIO) Proxy filing summary

Executive summary

• Supplement provides the full text of the 2026 Employee Stock Purchase Plan (ESPP), which was omitted from the original proxy statement but previously summarized.

• The ESPP aims to incentivize and retain employees by allowing them to purchase company stock, with both Section 423-compliant and non-423 components.

• The plan was adopted by the board on April 22, 2026, and approved by shareholders in June 2026.

Voting matters and shareholder proposals

• Shareholders were asked to approve the 2026 ESPP, which was subsequently adopted.

Board of directors and corporate governance

• The board or a designated committee administers the ESPP, with authority to interpret, amend, suspend, or terminate the plan.

• The board can delegate administration to committees or officers and retains final authority on policy matters.