Brennan David R
SEC Form 4 insider trading activity
Brennan David R has filed 4 SEC Form 4 filings (5 transaction rows) across 1 company, with disclosures dating back to 2025. 4 of those filings fall inside the rolling window. Most recent filing: Sep 11, 2026.
On the most recent filing, Brennan David R is listed as Director at INSMED Inc. Inside the rolling window, Brennan David R reported no open-market purchases and 1 open-market sale totaling $3.1M in INSM.
Companies traded
Other insiders at INSM
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$3.1M
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Brennan David R made?
Brennan David R has filed 4 SEC Form 4 filings (5 transaction rows) across 1 company since 2025.
Which companies does Brennan David R trade?
Brennan David R has filed SEC Form 4 disclosures for 1 company, including INSM.
When was Brennan David R's most recent SEC Form 4 filing?
Brennan David R's most recent SEC Form 4 filing on Tracefour is dated Sep 11, 2026.
What is Brennan David R's total buy and sell value in the current window?
Inside the rolling retention window, Brennan David R bought $0 and sold $3.1M based on SEC Form 4 filings.
What was Brennan David R's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 25,000 INSM shares on 2026-09-09, worth $3.1M, per SEC Form 4 filings.