David R Brennan Net Worth
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David R Brennan has an estimated net worth of at least $14.1 million*, as of Sept. 30, 2026. They own 99,238 shares of INSM stock. They have sold 25,000 shares of INSM stock since 2021, for an estimated $2.8 million.
David R Brennan $INSM SEC Form 4 Insider Trading
David R Brennan has filed a total of 2 insider trades in $INSM since 2021. Their most recent trade was a sale of 25,000 shares, made on Sep 09, 2026. Their largest trade was a sale of 25,000 shares, made on Sep 09, 2026. We estimate that they now own 99,238 shares of $INSM, worth an estimated $11.3 million.
Insider Trading at $INSM
There have been a total of 506 insider trades reported at $INSM since 2021, with 142,260 shares purchased and 4.8 million shares sold. The most active insider traders in $INSM stock have been William Lewis, Martina M.D. Flammer, and Orlov S Nicole Schaeffer. The most recent trade was a sale of 25,000 shares reported by David R Brennan (None), made on Sep 09, 2026.
History of Insider Stock Trades by David R Brennan
$INSM Executives and Stock Owners with Insider Trades
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William Lewis, Chair and CEO
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Martina M.D. Flammer, Chief Medical Officer
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Orlov S Nicole Schaeffer, Chief People Strategy Officer
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Roger Adsett, Chief Operating Officer
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Michael Alexander Smith, Chief Legal Officer
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Sara Bonstein, Chief Financial Officer
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John Drayton Wise, Chief Commercial Officer
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Michael Alexander Smith, General Counsel, Senior VP
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John Soriano, Chief Compliance Officer
*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.