S. Louise Phanstiel

Companies

• Butterfly Network, Inc.Board member Feb 16, 2021 to now¹
• Myriad GeneticsBoard member Sep 16, 2009 to now²
• Verastem OncologyBoard member Sep 20, 2012 to Jun 15, 2017³

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• BNButterfly Network, Inc. BFLY691,413 shares⁴$5.2M at $7.52Aug 17, 2026
• Myriad Genetics MYGN374,771 shares⁵$1.6M at $4.16Jun 4, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 14, 2026Bought 115,200 shares at $8.68 of Butterfly Network, Inc.⁴
• Jun 22, 2026Granted 25,447 shares of Butterfly Network, Inc.⁶
• Jun 4, 2026Granted 59,701 shares of Myriad Genetics⁵
• Feb 27, 2026Bought 48,000 shares at $4.66 of Myriad Genetics⁷
• Feb 26, 2026Bought 50,407 shares at $4.80 of Myriad Genetics⁷
• Feb 25, 2026Bought 6,100 shares at $4.74 of Myriad Genetics⁷
• Dec 15, 2025Bought 185,261 shares at $3.08 of Butterfly Network, Inc.⁸
• Jun 13, 2025Granted 80,434 shares of Butterfly Network, Inc.⁹
• Jun 5, 2025Granted 49,796 shares of Myriad Genetics¹⁰
• Sep 13, 2024Sold 60,049 shares at $1.96 of Butterfly Network, Inc.¹¹
• Jun 10, 2024Granted 157,894 shares of Butterfly Network, Inc.¹²
• Jun 6, 2024Granted 15,695 shares of Myriad Genetics¹³
• Jun 20, 2023Granted 65,789 shares of Butterfly Network, Inc.¹⁴
• Jun 1, 2023Granted 15,151 shares of Myriad Genetics¹⁵
• Jun 17, 2022Granted 48,231 shares of Butterfly Network, Inc.¹⁶
• Jun 2, 2022Granted 17,275 shares of Myriad Genetics¹⁷