X0508 4 2025-06-13 0001804176 Butterfly Network, Inc. BFLY 0001076352 ROTHBERG JONATHAN M C/O BUTTERFLY NETWORK, INC. 1600 DISTRICT AVENUE BURLINGTON MA 01803 1 0 1 0 0 Class A Common Stock 2025-06-13 4 A 0 80434 0.00 A 2880252 D Class A Common Stock 1240509 I By NVR TR, LLC Class A Common Stock 1240509 I By JNR TR, LLC Class A Common Stock 1240509 I By JAR TR, LLC Class A Common Stock 1240509 I By GBR TR, LLC Class A Common Stock 1240509 I By EJR TR, LLC Class A Common Stock 726696 I By Bonnie E Gould Rothberg MD Class B Common Stock 9716596 I By 4C Holdings I, LLC Class B Common Stock 2621701 I By 4C Holdings II, LLC Class B Common Stock 2621701 I By 4C Holdings III, LLC Class B Common Stock 2621701 I By 4C Holdings IV, LLC Class B Common Stock 8845238 I By 4C Holdings V, LLC Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of Class A common stock upon vesting. The RSUs were issued to the Reporting Person as the annual grant to nonemployee directors pursuant to the Issuer's Amended and Restated Nonemployee Director Compensation Policy for services to be rendered to the Issuer as a member of its Board of Directors. The RSUs vest in full on the date of the Issuer's 2026 Annual Stockholders Meeting, subject to the Reporting Person's continued service on the Board of Directors on such date. Dr. Rothberg is the Manager of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, 4C Holdings V, LLC, NVR TR, LLC, JNR TR, LLC, JAR TR, LLC, GBR TR, LLC and EJR TR, LLC, and is the spouse of Bonnie E Gould Rothberg MD. Dr. Rothberg disclaims beneficial ownership of the securities held by these persons and entities except to the extent of his pecuniary interest therein. /s/ Michael Fantozzi, Attorney-in-Fact for Jonathan M. Rothberg, Ph.D. 2025-06-17