Butterfly Network, Inc. insider Jonathan M. Rothberg, Ph.D. reported a sale of company stock on July 22, 2026, according to a Form 4 filed July 24. The filing describes a transaction involving 54,143 shares of Butterfly Network Class B common stock at a weighted-average sale price of $6.4698 per share, implying gross proceeds of about $350,294. The shares were sold at prices ranging from $6.355 to $6.78 per share. The filing notes that the reported price is a weighted average and that detailed price-by-price sale information will be provided upon request to the SEC staff, the issuer, or a Butterfly Network security holder. The transaction is described as a sale; the excerpt does not display a transaction-code table, though such open-market sales on Form 4 are generally reported under transaction code “S.” A key feature of the transaction is the treatment of Butterfly’s dual-class stock. Under the terms of the Class B common stock, the shares automatically converted into Class A common stock on a one-for-one basis upon sale. As a result, Rothberg’s sale effectively moved the shares out of the higher-vote Class B class and into Class A common stock for the buyer at the time of sale. The filing states that the transaction was executed pursuant to a Rule 10b5-1 trading plan adopted by Rothberg on March 13, 2026, for estate-planning purposes. Rule 10b5-1 plans allow insiders to set up prearranged trading instructions, which can provide an affirmative defense against claims that trades were made on the basis of material nonpublic information, provided the plan meets applicable requirements. The ownership note also identifies several related parties and entities connected to Rothberg. He is listed as 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, GBR TR, LLC, and EJR TR, LLC, and as the spouse of Bonnie E. Gould Rothberg, M.D. Rothberg disclaims beneficial ownership of securities held by those persons and entities except to the extent of his pecuniary interest. The provided filing text does not state Rothberg’s remaining beneficial ownership after the sale, and it does not report any option exercise, restricted stock vesting, or derivative-security transaction.