Every Form 4 that Butterfly Network, Inc. (BFLY) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow BFLY and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full BFLY filings page.
Butterfly Network director and 10% owner Larry Robbins reported buying 21,370 shares of Class A common stock on December 11, 2025 at a weighted average price of $3.0169. The filing notes these were open-market purchases, with individual trade prices ranging from $3.015 to $3.02.
After this transaction, Robbins beneficially owned 14,335,055 shares indirectly through the Glenview Investment Funds and 4,546,687 shares indirectly through Longview Investors LLC or its affiliates, plus 365,505 shares held directly. The direct holdings include 80,434 unvested restricted stock units, each representing one share, which vest in full at Butterfly Network’s 2026 annual stockholders meeting, subject to Robbins’ continued service on the board. Footnotes explain that Glenview and Longview are the record holders, that Robbins may be deemed to share voting and dispositive power, and that he disclaims beneficial ownership beyond any pecuniary interest.
Butterfly Network, Inc. insider Jonathan M. Rothberg, Ph.D., a director and 10% owner, reported multiple open-market sales of Class A common stock in mid-December 2025 under a pre-arranged Rule 10b5-1 trading plan adopted on March 5, 2025 for estate planning purposes. On December 10, 2025, an affiliated entity, EJR TR, LLC, sold 288,918 Class A shares at a weighted average price of $3.1332 per share. On December 11, 2025, EJR TR, LLC sold 123,354 Class A shares at a weighted average price of $3.0816 per share. On December 12, 2025, EJR TR, LLC sold 82,262 Class A shares and JNR TR, LLC sold 111,031 Class A shares, each at a weighted average price of $3.0804 per share. Following these transactions, Rothberg continues to report indirect holdings in multiple entities and disclaims beneficial ownership beyond his pecuniary interest.
Butterfly Network, Inc. insider activity shows a director and 10% owner reporting sales of Class A common stock. On December 8, 2025, entities associated with the reporting person sold 543,601 Class A shares and 225,726 Class A shares at a weighted average price of $3.2727 per share. On December 9, 2025, an associated entity sold an additional 176,070 Class A shares at a weighted average price of $3.1054 per share. The filing states these transactions were made under a Rule 10b5-1 trading plan adopted on March 5, 2025 for estate planning purposes. After these sales, the reporting person continues to hold indirect beneficial ownership in Class A and Class B shares through multiple LLC and trust entities.
Butterfly Network, Inc. (BFLY) reported an equity award to its Executive Vice President and Chief Financial Officer in the form of restricted stock units (RSUs) on December 8, 2025. The officer received 863,247 RSUs, each convertible into one share of Class A common stock, with one-third vesting on December 8, 2026 and the rest vesting annually over the following two years, subject to continued service.
The officer also received 431,623 performance-based RSUs. These vest in three equal tranches if the stock price reaches or exceeds $3.00, $4.50, and $6.00 per share, respectively, for 20 consecutive trading days before December 8, 2030, and if the officer remains in service through each vesting date. The reported acquisition price for the RSUs is $0 as they are part of compensation.
Butterfly Network, Inc. insider Jonathan M. Rothberg, Ph.D., a director and 10% owner, reported planned stock sales under a Rule 10b5-1 trading plan. The plan was adopted on March 5, 2025 for estate planning purposes.
On December 4, 2025, an affiliated entity, GBR TR, LLC, sold 64,198 shares of Class A common stock at a weighted average price of $3.076 per share, leaving 581,199 Class A shares indirectly held by that entity. On December 5, 2025, GBR TR, LLC sold an additional 37,598 Class A shares at a weighted average price of $3.0744, with 543,601 Class A shares remaining indirectly held.
Rothberg reports indirect beneficial ownership of additional Class A and Class B common stock through multiple family trusts and holding companies and disclaims beneficial ownership beyond his pecuniary interest.
Butterfly Network, Inc. director and 10% owner Larry Robbins reported a series of open-market purchases of Class A common stock. On December 3, 2025, entities he oversees bought 821,648 shares at a weighted average price of $2.9619 per share. On December 4, 2025, they bought 536,893 shares at a weighted average of $2.9947, and on December 5, 2025, they bought 200,000 shares at a weighted average of $3.0565.
The shares were acquired by Glenview investment funds, for which Robbins is investment manager, and he shares voting and dispositive power over these holdings. He also has interests through Longview Investors LLC and holds additional securities, including restricted stock units that vest at the company’s 2026 annual stockholders meeting, conditioned on his continued board service.
Butterfly Network, Inc. (BFLY) reported an insider transaction by its Deputy General Counsel on a Form 4. On 12/02/2025, the officer sold 1,686 shares of Class A common stock. The weighted average sale price was about $2.829 per share, with individual trades executed between $2.79 and $2.87 per share.
The company has a sell-to-cover policy for tax withholding, and these sales represent shares automatically sold to satisfy tax obligations tied to vesting restricted stock units. After this transaction, the reporting person beneficially owned 231,035 shares of Butterfly Network stock, held directly.
Butterfly Network, Inc.$3.079 per share through JNR TR, LLC. The sales were executed under a pre-arranged Rule 10b5-1 trading plan adopted on March 5, 2025 for estate planning purposes, with individual trade prices ranging from $3.07 to $3.105 per share.
After this transaction, Rothberg continues to beneficially own substantial stakes in Butterfly Network’s Class A and Class B common stock through multiple entities, including JNR TR, LLC, EJR TR, LLC, GBR TR, LLC, NVR TR, LLC and several 4C Holdings entities, as well as through his spouse.
Butterfly Network, Inc. director and 10% owner Jonathan M. Rothberg, Ph.D., reported multiple sales of Class A common stock executed indirectly through family-related LLC trusts. On 11/24/2025 and 11/25/2025, entities EJR TR, LLC, JNR TR, LLC and GBR TR, LLC each sold 370,193 and then about 224,9xx Class A shares at weighted average prices of about $3.15 and $3.27 per share under transaction code “S.” On 11/26/2025, NVR TR, LLC sold 442,539 Class A shares at a weighted average price of about $3.13 per share. The filing states these trades were made under a Rule 10b5‑1 trading plan adopted on March 5, 2025 for estate planning purposes, and that Dr. Rothberg disclaims beneficial ownership of the securities held by the various entities except to the extent of his pecuniary interest.
Butterfly Network (BFLY) director Larry Robbins, through Glenview-managed funds, reported open-market purchases of Butterfly Network Class A common stock over three consecutive days. On November 19, 2025, Glenview Investment Funds purchased 1,000,000 shares at a weighted average price of $2.3539 per share. On November 20, 2025, they bought another 1,000,000 shares at a weighted average price of $2.366, followed by 800,000 shares on November 21, 2025 at a weighted average price of $2.5802. After these transactions, Robbins reported 12,755,144 shares beneficially owned indirectly through Glenview funds, 4,546,687 shares indirectly through Longview Investors LLC, and 365,505 shares held directly, which include 80,434 unvested restricted stock units that vest at the company’s 2026 annual stockholders meeting if he continues serving on the board.
Butterfly Network (BFLY) reported an insider transaction by Jonathan M. Rothberg, Ph.D., a Director and 10% owner. On 11/03/2025, he sold 100,502 shares of Class A common stock at a weighted average price of $3.078, with sale prices ranging from $3.07 to $3.095. The trade was made under a Rule 10b5-1 trading plan adopted on March 5, 2025.
Following the transaction, 1,140,007 Class A shares were beneficially owned indirectly through EJR TR, LLC. Additional holdings are reported across several entities, and Dr. Rothberg disclaims beneficial ownership except to the extent of his pecuniary interest.
Butterfly Network (BFLY) reported an insider stock transaction on a Form 4. A director sold 112,009 shares of Class A common stock on 11/04/2025 at a weighted average price of $2.695, with individual trades executed between $2.68 and $2.731 per share. The filing states the sale was made to cover tax obligations related to a prior vesting of restricted stock units.
Following the transaction, the reporting person directly holds 265,505 shares. This filing reflects routine tax withholding activity tied to equity compensation rather than an open‑market discretionary sale.