A statement of changes in beneficial ownership filed on August 17, 2026 discloses that S. Louise Phanstiel, a director of Butterfly Network, Inc. (NYSE:BFLY), purchased 115,200 shares of Class A Common Stock on August 14, 2026 at a weighted average price of $8.6763 per share, with individual transaction prices ranging from $8.49 to $8.865 per share.

Key Highlights

  • Director purchase: S. Louise Phanstiel, listed as a director of Butterfly Network, Inc., acquired 115,200 shares of Class A Common Stock on August 14, 2026.
  • Weighted average price: Shares were purchased at a weighted average price of $8.6763 per share, with individual prices ranging from $8.49 to $8.865 per share.
  • Indirect ownership: Following the transaction, Phanstiel indirectly holds 300,461 shares through The Phanstiel Trust u/a/d 2/5/02.
  • Direct ownership: Phanstiel also holds 390,952 shares of Class A Common Stock directly, as reported in the filing.
  • Transaction code: The transaction was coded "P," indicating an open-market purchase, with no Rule 10b5-1 plan box checked.

Phanstiel Trust Adds Butterfly Network Shares in August 2026 Open-Market Purchase

According to the filing, the 115,200 shares acquired on August 14, 2026 were purchased indirectly through The Phanstiel Trust u/a/d 2/5/02, bringing total indirect beneficial ownership through that trust to 300,461 shares of Butterfly Network Class A Common Stock. The filing indicates the purchase transaction code is "P," signifying an open-market acquisition. The filing did not indicate that the transaction was made pursuant to a Rule 10b5-1(c) contract, instruction, or written plan, as the corresponding box was not checked.

Butterfly Network, Inc. is a medical technology company that develops handheld, semiconductor-based ultrasound imaging devices and related software, operating under the NYSE:BFLY ticker symbol. The filing notes that full information regarding the number of shares purchased at each individual price within the $8.49 to $8.865 range will be provided upon request to the SEC staff, the issuer, or a security holder of the issuer. In addition to the trust-held shares, the filing separately reports 390,952 shares held directly by the reporting person, with the two ownership positions listed on distinct lines as required.

The filing was signed by Nick Caezza as Attorney-in-Fact for S. Louise Phanstiel and dated August 17, 2026. No derivative securities transactions were reported in Table II of the filing.

What Was Disclosed

The filing reports a single open-market purchase of 115,200 Class A Common Stock shares by Butterfly Network director S. Louise Phanstiel on August 14, 2026, at a weighted average price of $8.6763, resulting in indirect beneficial ownership of 300,461 shares through a trust, plus 390,952 shares held directly.