Patrick J Heron bought $12M of MBX
director, owner at MBX Biosciences, Inc.. 666,666 shares at an average of $18.00, traded Sep 26, 2025, filed Sep 30, 2025.
Score components
- +15RoleDirector
- +25Trade size$12.0M at market
- +3Relative to holdingsHoldings up 15%
- +8Price context33% below the 52-week high
- 0ClusterNo other insider buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m +24.5%, 3m +76.6%, 6m +70.6%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001231919-25-000267, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 26, 2025 | POpen-market purchase Common Stockindirect: By Frazier Life Sciences X, L.P. | +666,666 | $18.00 | $12M | 5,219,440 | Sep 30, 2025 |
Related signals
Other insiders at MBX Biosciences, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 15Weak | MBXsell MBX Biosciences, Inc. | Salomon Azoulay Chief Medical Officer | $24k 370 shares | -3% | |
| 33Weak | MBX Biosciences, Inc. | Salomon Azoulay Chief Medical Officer | $2.7M 70,003 shares | -100% | |
| 23Weak | MBX Biosciences, Inc. | Salomon Azoulay Chief Medical Officer | $6,824 231 shares | -2% | |
| 33Weak | MBX Biosciences, Inc. | P. Kent Hawryluk President & CEO | $18k 607 shares | -0% | |
| 51Moderate | MBXbuy MBX Biosciences, Inc. | P. Kent Hawryluk President & CEO | $526k 18,500 shares | +4% | |
| 54Moderate | MBX Biosciences, Inc. | P. Kent Hawryluk President & CEO | $273k 20,000 shares | +4% | |
| 52Moderate | MBX Biosciences, Inc. | Steven L. Hoerter President and CEO | $265k 20,000 shares | - | |
| 45Moderate | MBXbuy MBX Biosciences, Inc. | Ora H. Pescovitz director | $45k 7,693 shares | +46% | |
| 51Moderate | MBX Biosciences, Inc. | Carl L Gordon director, owner | $2.0M 190,672 shares | +6% | |
| 54Moderate | MBX Biosciences, Inc. | P. Kent Hawryluk President & CEO | $535k 50,000 shares | +13% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.