Form 4: Butterfly Network CTO Sells Shares for Tax Obligations

Butterfly Network's Chief Technology Officer, Victor Ku, sold 35,968 shares of Class A Common Stock to cover tax withholding obligations related to vested restricted stock units.

Summary

• Victor Ku, Chief Technology Officer of Butterfly Network, Inc. [BFLY], reported a transaction involving the company's Class A Common Stock.
• On January 5, 2026, Mr. Ku disposed of 35,968 shares of Class A Common Stock.
• The shares were sold at a weighted average price of $3.82 per share, with individual sales prices ranging from $3.765 to $3.91 per share.
• This sale was executed pursuant to the Issuer's 'sell-to-cover' policy to satisfy tax withholding obligations in connection with the vesting of restricted stock units.
• The transaction was automatic and not at the discretion of Mr. Ku.
• Following this reported transaction, Mr. Ku beneficially owns 811,962 shares of Class A Common Stock.

Sentiment

Score: 5

Explanation: Neutral. The transaction is a routine, non-discretionary 'sell-to-cover' for tax purposes related to equity compensation, which is a common occurrence and does not reflect a discretionary positive or negative sentiment from the insider regarding the company's prospects.

Future Outlook

NA

Industry Context

NA

Stakeholder Impact

• Shareholders may note a minor reduction in insider ownership, but the non-discretionary nature of the sale for tax purposes suggests no material change in management's confidence or operational outlook.

Key Dates

Recommendation

The transaction is a non-discretionary 'sell-to-cover' to satisfy tax obligations upon the vesting of restricted stock units. This is a common and expected event for executives receiving equity compensation and does not reflect a change in the insider's view of the company's fundamentals or future prospects. Therefore, it does not provide a basis for altering an existing investment thesis.

Keywords

Butterfly Network, BFLY, Victor Ku, CTO, Form 4, Insider Trading, Stock Sale, Restricted Stock Units, Tax Withholding, Equity Compensation