X0609 4 2026-09-22 0001804176 Butterfly Network, Inc. BFLY 0001258790 DEVIVO JOSEPH false C/O BUTTERFLY NETWORK, INC. 1600 DISTRICT AVENUE BURLINGTON MA 01803 1 1 0 0 President & CEO 1 Class A Common Stock 2026-09-22 4 S 0 2811 10.00 D 7350889 D Class A Common Stock 2026-09-23 4 S 0 3169 10.021 D 7347720 D The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025. Represents the weighted average sales price per share. The shares sold at prices ranging from $10.00 to $10.045 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. /s/ Nick Caezza, Attorney-in-Fact 2026-09-24