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Insider filing · BFLY

S. Louise Phanstiel bought $1000K of Butterfly Network (BFLY)

Executed Aug 14, disclosed Aug 17, 3 days later.

Value, as filed
$1000K
115,200 sh × $8.68
Executed
Aug 14
the trade date, as filed
Disclosed
Aug 17
3 days after the trade
Return, 21 sessionsiFrom the disclosed entry session; derived
-10.6%
-14.3% from execution

Over the 21 trading sessions from the disclosed entry session (Aug 17), the stock returned -10.6% (delay-adjusted); from the execution session (Aug 14), -14.3%. Derived: entry at the session's open, exit at the close 20 sessions later.

The filer
SP S. Louise Phanstiel Director profile →

S. 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.

The name
BFLY Butterfly Network, Inc. BFLY · Healthcare · 45 filings in 24 months ticker →

Healthcare · Butterfly Network, Inc. develops, manufactures, and commercializes ultrasound imaging solutions in the United States and internationally

More Healthcare filings Insider filings, newest first View the original filing at www.sec.gov
Other filings by S. Louise Phanstiel in BFLY
BFLYPURCHASE Butterfly Network, Inc. $571K
185,261 sh × $3.08
Exec Dec 15 2025
Filed Dec 17 2025 · 4:10 PM ET
BFLYSALE Butterfly Network, Inc. $118K
60,049 sh × $1.96
Exec Sep 13 2024
Filed Sep 13 2024 · 5:30 PM ET