INSM has an insider buy conviction of 0%, compared to the Unknown sector buy average of 20%.
Top Insiders
Most active traders
A
1
Adsett Roger
COO
0 buys6 sells
$48.25M total
L
2
Lewis William
Chair, CEO
0 buys20 sells
$32.79M total
S
3
Schaeffer Orlov S Nicole
Chief People Strategy Officer
0 buys2 sells
$21.11M total
F
4
Flammer Martina M.D.
Chief Medical Officer
0 buys11 sells
$17.40M total
L
5
Lee Leo
Dir
0 buys1 sells
$14.69M total
Insider Trading Summary
Automated trend commentary
Over the last 90 days, corporate insiders at INSM (INSM) engaged in a total of 100 transactions reported via SEC Form 4 filings. Among these, 0 were open-market purchases and 57 were sales. The total volume of insider trading reached $156.21M.
The net insider activity for INSM shows a net selling bias of $156.21M. This activity represents a 0% buy ratio, suggesting that insiders are currently bearish on the company's near-term outlook relative to recent history.
The most notable individual transaction was a Sale by Adsett Roger (COO), who traded 239.8K shares valued at $31.96M on Aug 10, 2026.
Answers to common questions regarding corporate filings and executive sentiment for INSM.
Based on SEC Form 4 disclosures, the Insider Confidence Score for INSM is currently 15/100, which reflects a heavy distribution bias. This calculation accounts for a total of 0 purchases and 57 sales by company executives over the last 90 days.
The CEO Conviction Index for INSM is rated as "Liquidating / Profit Taking". Executive buying is typically a strong vote of confidence as C-level leaders have the most intimate knowledge of their firm's prospects. Officer selling, on the other hand, is often routine and does not automatically signal operational weakness.
No. Insider tracking is a highly informative technical signal that indicates executive sentiment, but it should not be the sole basis for a transaction. Investors should combine this filing analysis with company financials, sector trends, and risk management criteria.