Founder & Director Jonathan Rothberg Files Intent to Sell $1.4M in Shares, Following $16.1M in Recent Sales
BFLY has more than doubled off its 52-week low of $1.32.
Summary
Jonathan Rothberg, a Director and founder of Butterfly Network, has filed a Form 144 indicating intent to sell an additional $1.42 million in shares, adding to over $16.12 million in sales over the past three months.
Key Events · Ownership and Investor Activity · BFLY
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Proposed Share Sale
Director Jonathan Rothberg filed intent to sell 351,617 shares, valued at approximately $1.42 million.
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Recent Insider Selling
This proposed sale follows the sale of 5,062,365 shares for gross proceeds of $16.12 million by the same insider over the past three months.
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Founder Divestment
The cumulative selling by a founder and Director represents a significant reduction in his ownership stake.
Analysis · BFLY · Industrial Applications And Services
This Form 144 filing signals a continued pattern of significant share divestment by Jonathan Rothberg, a founder and Director of Butterfly Network. The proposed sale of $1.42 million in shares, while substantial on its own, follows a much larger series of sales totaling over $16.12 million in the preceding three months. This cumulative selling activity by a key insider, even if executed under a pre-planned 10b5-1 program, suggests a notable reduction in his stake and could be interpreted as a lack of confidence in the company's near-term prospects or a need for personal liquidity. Investors should monitor future insider activity for further indications of sentiment.
How filings like this one have moved
In the 30 days to Sep 15, 2026, 35.6% of the 1100 measured filings Wiseek scored 8 moved their stock by 5% or more by the next session's close. The median move was -0.43%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, BFLY was trading at $4.05 on NYSE in the Industrial Applications And Services sector, with a market capitalization of approximately $1B. The 52-week trading range was $1.32 to $4.98. This filing was assessed with negative market sentiment and an importance score of 8 out of 10.