X0508 4 2025-12-03 0001804176 Butterfly Network, Inc. BFLY 0001228603 ROBBINS LARRY 767 FIFTH AVENUE, 44TH FLOOR NEW YORK NY 10153 true true false Class A Common Stock 2025-12-03 4 P 0 821648 2.9619 A 13576792 I See footnotes Class A Common Stock 2025-12-04 4 P 0 536893 2.9947 A 14113685 I See footnotes Class A Common Stock 2025-12-05 4 P 0 200000 3.0565 A 14313685 I See footnotes Class A Common Stock 4546687 I See footnotes Class A Common Stock 365505 D These shares of the Issuer's Common Stock, par value $0.0001 per share (the "Shares") were purchased by Glenview Capital Master Fund, Ltd., Glenview Offshore Opportunity Master Fund, Ltd. and Glenview Healthcare Master Fund, L.P. (collectively, the "Glenview Investment Funds"). This price reflects the weighted average price for open-market purchases of Shares on December 3, 2025 within a $1.00 range. The actual prices for these transactions range from $2.83 to $2.97, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares purchased at each separate price. This price reflects the weighted average price for open-market purchases of Shares on December 4, 2025 within a $1.00 range. The actual prices for these transactions range from $2.865 to $3.06, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares purchased at each separate price. This price reflects the weighted average price for open-market purchases of Shares on December 5, 2025 within a $1.00 range. The actual prices for these transactions range from $3.0123 to $3.06, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares purchased at each separate price. The Glenview Investment Funds are the record holders of these Shares. Mr. Robbins is the Founder, Portfolio Manager and CEO of Glenview Capital Management, LLC, which serves as investment manager to each of the Glenview Investment Funds. Mr. Robbins shares voting and dispositive power over the Shares held by the Glenview Investment Funds and may be deemed to beneficially own such Shares. Longview Investors LLC ("Longview"), or its affiliates, is the record holder of these securities. Mr. Robbins is the managing member of Longview. Mr. Robbins shares voting and dispositive power over the securities held by Longview and may be deemed to beneficially own such securities. Mr. Robbins disclaims beneficial ownership over any securities owned by Longview and the Glenview Investment Funds other than to the extent of any pecuniary interest he may have therein. Includes 80,434 unvested restricted stock units ("RSUs"). Each RSU represents the right to receive one Share upon vesting. The RSUs vest in full on the date of the Issuer's 2026 Annual Stockholders Meeting, subject to Mr. Robbins' continued service on the Board of Directors on such date. /s/ Larry Robbins 2025-12-05