S. Louise Phanstiel bought $1000K of Butterfly Network (BFLY)
Executed Aug 14, disclosed Aug 17, 3 days later.
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.
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.
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→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