Form 4: MBX Biosciences CFO Receives Stock Grant
Insider Transaction (Form 4)
John W Smither, Chief Financial Officer of MBX Biosciences, Inc., reported multiple transactions in common stock on August 3, 2026.
Summary
- Grant/award: acquired 28,000 Common Stock on August 3, 2026; holds 28,000 after (Direct).
- Grant/award: acquired 130,000 Stock option (right to buy) on August 3, 2026; holds 130,000 after (Direct).
Sentiment
Score: 5
Explanation: StockSavvy.ai views this as routine: the reported changes are grants, option exercises, tax withholding or similar administrative transactions, which carry limited directional signal.
Insider Transactions
John W Smither — Officer (Chief Financial Officer)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-03 | Grant/award | Common Stock | 28,000 | — | — | 28,000 |
| 2026-08-03 | Grant/award | Stock option (right to buy) | 130,000 | — | — | 130,000 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-03 | Grant/award (28,000 shares) |
| 2026-08-03 | Grant/award (130,000 shares) |
Keywords
insider transaction, Form 4, MBX, MBX Biosciences, Inc., neutral, John W Smither
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