SP
Insider
S. Louise Phanstiel
DirectorS. Louise Phanstiel (Director) filed 3 Form 4 reports in the trailing twelve months (3 purchases, 0 sales), most often in Butterfly Network, Inc. (BFLY). Across 3 priced purchase filings, the average 21-session return was +15.1% from execution and +0.8% from disclosure (delay-adjusted; derived). The largest single filing was $1000K of BFLY (115,200 sh × $8.68, as filed), executed Aug 14.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
+15.1%
avg across 3 priced filings
Delay-adjustediThe same average, entered at disclosure dates
+0.8%
same 3 filings, from disclosure
Filings, ttm
3
3 buys · 0 sells
Median delay
2d
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$2.0M
shares × price, as filed
Last traded
Aug 14
Filed Aug 17
Median ADV $75.0M across their filed names
Open performance→Volume by month
Buys $2.0M
Sells $0
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Healthcare
2 filings
Not on file
1 filing
Sector per market data · by filing · past 12 months
Most traded names
BFLYRecent filings
BFLYPURCHASE
Butterfly Network, Inc.
View filing →
$1000K115,200 sh × $8.68
Exec Aug 14
Filed Aug 17 · 4:51 PM ET MYGNPURCHASE MYRIAD GENETICS INC View filing → $466K
98,407 sh across 2 lots
Exec Feb 26
Filed Feb 27 · 4:46 PM ET BFLYPURCHASE Butterfly Network, Inc. View filing → $571K
185,261 sh × $3.08
Exec Dec 15 2025
Filed Dec 17 2025 · 4:10 PM ET BFLYSALE Butterfly Network, Inc. View filing → $118K
60,049 sh × $1.96
Exec Sep 13 2024
Filed Sep 13 2024 · 5:30 PM ET