X0609 4 2026-04-16 0001804176 Butterfly Network, Inc. BFLY 0002035576 Cashman Steve false C/O BUTTERFLY NETWORK, INC. 1600 DISTRICT AVENUE BURLINGTON MA 01803 0 1 0 0 Chief Business Officer 1 Class A Common Stock 2026-04-16 4 S 0 200000 5.222 D 2177386 D The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2025. Represents the weighted average sales price per share. The shares sold at prices ranging from $5.00 to $5.610 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 2026-04-17