Mack John Prosper 4

What Happened

• Mack John Prosper, a director of Orchestra BioMed Holdings, Inc. (OBIO), was granted 34,653 restricted stock units (RSUs) on June 23, 2026 (reported as an A — Award/Grant). The RSUs were reported at $0.00 per share on the Form 4 because they are contingent awards, not open-market purchases.
• On June 24, 2026, 3,510 shares were disposed (reported as F — tax withholding) to satisfy tax withholding obligations in connection with RSU vesting. The filing notes no shares were sold in the market to cover withholding.

Key Details

• Transaction dates: 2026-06-23 (grant of 34,653 RSUs) and 2026-06-24 (3,510 shares withheld for taxes).
• Reported prices: $0.00 per share for both entries (reflects award/withholding reporting convention).
• Shares owned following reported transactions: Not specified in the filing; 34,653 RSUs are contingent rights to receive shares upon vesting.
• Relevant footnotes: F1 — RSUs awarded on 6/23/2026 will vest on the one-year anniversary subject to continuous service. F2 — The 3,510 shares were withheld by the issuer to satisfy tax withholding; no market sale occurred.
• Filing date and timeliness: Form 4 filed 2026-06-25; appears to be timely (filed within the Form 4 reporting window).

Context

• RSUs are compensation awards that convert to actual shares only upon vesting (here, one year after grant if service conditions are met). The withholding action is a routine tax-related step and did not involve a public sale of shares.
• This filing reflects an equity compensation grant and related tax withholding rather than an insider purchase or open-market sale; such grants are common for directors and executives as part of compensation.