McKean-Dieser Avril Suzette 4

What Happened
Avril McKean-Dieser, a director of OS Therapies, was granted options to purchase 50,000 shares of the company’s common stock on January 22, 2026. The Form 4 reports the derivative award with an acquisition price of $0.00 (grant of options), and no immediate cash transaction or sale occurred.

Key Details

• Transaction date: 2026-01-22 (Form 4 filed 2026-02-13).
• Transaction type/code: Grant/Award (A) — options to purchase 50,000 shares.
• Reported price/value on Form 4: $0.00 (derivative grant; grant-date fair value not shown).
• Vesting: Options vest in full on the one-year anniversary of the grant (Jan 22, 2027) provided the reporting person remains a director (per footnote).
• Shares owned after transaction: Not specified in the filing.
• Timeliness: Filing was late (filed 22 days after the transaction); Form 4s are normally due within two business days.

Context
This was a stock option grant (a compensation award), not a purchase or sale of shares. Such grants are common for directors and do not represent an immediate market buy or sell. The options will only convert to equity if/when exercised after vesting and subject to any exercise terms. The late filing is a compliance detail investors should note but does not itself indicate trading behavior.