S. Louise Phanstiel bought $571k of BFLY
director at Butterfly Network, Inc.. 185,261 shares at an average of $3.08, traded Dec 15, 2025, filed Dec 17, 2025.
Score components
- +15RoleDirector
- +19Trade size$571k at market
- +8Relative to holdingsFirst purchase: no shares before this trade
- +8Price context33% below the 52-week high
- +8Cluster2 insiders 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 +31.2%, 3m +24.6%, 6m +80.1%.
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 0002064832-25-000087, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Dec 15, 2025 | POpen-market purchase Class A Common Stockindirect: By The Phanstiel Trust u/a/d 2/5/02 | +185,261 | $3.08 | $571k | 185,261 | Dec 17, 2025 |
Related signals
Other insiders at Butterfly Network, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| Pro nowfree Oct 15, 2026 | Butterfly Network, Inc. | Joseph Devivo President & CEO | $359k 35,790 shares | -0% | |
| 32Weak | Butterfly Network, Inc. | Megan Carlson CAO and SVP, Finance | $88k 10,114 shares | -2% | |
| 20Weak | Butterfly Network, Inc. | Joseph Devivo President & CEO | $60k 5,980 shares | -0% | |
| 40Moderate | Butterfly Network, Inc. | Megan Carlson CAO and SVP, Finance | $101k 13,804 shares | -3% | |
| 55Moderate | Butterfly Network, Inc. | Steve Cashman Chief Business Officer | $1.0M 140,112 shares | -9% | |
| 30Weak | Butterfly Network, Inc. | Nicholas Caezza Deputy General Counsel | $14k 1,709 shares | -1% | |
| 60Notable | Butterfly Network, Inc. | Larry Robbins director | $21M 2,297,733 shares | -18% | |
| 50Moderate | BFLYbuy Butterfly Network, Inc. | S. Louise Phanstiel director | $1000k 115,200 shares | +62% | |
| 41Moderate | Butterfly Network, Inc. | Joseph Devivo President & CEO | $684k 68,346 shares | -1% | |
| 40Moderate | Butterfly Network, Inc. | Nicholas Caezza Deputy General Counsel | $98k 10,000 shares | -3% |
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.