S. Louise Phanstiel bought $571K of Butterfly Network (BFLY)
Executed Dec 15 2025, disclosed Dec 17 2025, 2 days later.
Over the 21 trading sessions from the disclosed entry session (Dec 17 2025), the stock returned +23.1% (delay-adjusted); from the execution session (Dec 15 2025), +63.9%. 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→115,200 sh × $8.68
Exec Aug 14
Filed Aug 17 · 4:51 PM ET