S. Louise Phanstiel insider trades: Butterfly Network (BFLY) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where S. reports to the SEC
Open-market buys and sales
9 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 14, 2026 | BFLY | ↑ Buy | 115,200 | $8.68 | $1000K | By The Phanstiel Trust u/a/d 2/5/02 | Aug 17, 2026 (3d) |
| Dec 15, 2025 | BFLY | ↑ Buy | 185,261 | $3.08 | $571K | By The Phanstiel Trust u/a/d 2/5/02 | Dec 17, 2025 (2d) |
| Sep 13, 2024 | BFLY | ↓ Sell | 60,049 | $1.96 | $118K | Held by H.G. Phanstiel LP | Sep 13, 2024 (0d) |
| Aug 5, 2021 | MYGN | ↓ Sell | 47,881 | $35.04 | $1.7M | Direct | Aug 6, 2021 (1d) |
| Nov 11, 2020 | MYGN | ↑ Buy | 15,000 | $16.62 | $249K | Direct | Nov 12, 2020 (1d) |
| Dec 8, 2015 | MYGN | ↓ Sell | 5,000 | $44.00 | $220K | The Phanstiel Trust | Dec 9, 2015 (1d) |
| Dec 29, 2014 | VSTM | ↑ Buy | 10,000 | $8.54 | $85K | Through The Phanstiel Trust U/A/D 02/05/ | Dec 31, 2014 (2d) |
| Jun 12, 2013 | VSTM | ↑ Buy | 4,500 | $9.60 | $43K | By The Phanstiel Trust U/A/D 02/05/02 | Jun 13, 2013 (1d) |
| Jun 11, 2013 | VSTM | ↑ Buy | 12,000 | $9.30 | $112K | By The Phanstiel Trust U/A/D 02/05/02 | Jun 12, 2013 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other BFLY insiders
Open-market trades in the last 12 months
About S. Louise Phanstiel's insider trades
S. Louise Phanstiel is a director at Butterfly Network (BFLY). Since Jun 11, 2013, S. has reported 6 open-market purchases worth $2.1M and 3 sales worth $2.0M on SEC Form 4. In the last 12 months: 2 buys ($1.6M).
Their filings also include grants and awards (30 filings), option exercises (1 filing), gifts (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every BFLY insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.