InsidersTradesSigma
Total declarations
Companies
▲ Purchases (1 ops.)
▼ Sales (0 ops.)
Insider track record
Board DirectorDisclosed buys
1
Disclosed sells
0
T+90 hit rate
0%
T+90 mean return
-13.2%
Across 1 buy signal with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Discover the complete record of transactions filed by Brennan David R, Director. Officer active across 5 companies, notably ALEXION PHARMACEUTICALS, INC.. In total, 11 reports have been published. Breakdown: 1 buy · 0 sell. Total volume traded: €261k. History available since 20 May 2021. The latest transaction was filed on 23 February 2026 (Don). Regulator: SEC (Form 4). The full history is accessible without signup.
Companies and markets linked to Brennan David R
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations11 total
3,305 sharesCommon StockSEC:0001609305-26-000004:0
6,000 shares0Common StockSEC:0001609305-26-000002:0
60,000 shares0Common StockSEC:0001609305-25-000004:0
5,058 sharesCommon StockSEC:0001628280-25-026569:0
13,162 sharesCommon StockSEC:0001628280-24-023560:0
13,192 sharesCommon StockSEC:0001628280-23-018200:0
14,645 sharesCommon StockSEC:0001140361-22-019182:0
10,000 shares@ US$30.15100.0% of flowCommon StockSEC:0001140361-21-036422:0
Canonical exit: 30 Jan 2022 (T+90)
20,873 shares0Common Stock, par value $.0001 per shareSEC:0000899866-21-000070:0
1,962 shares0Common Stock, par value $.0001 per shareSEC:0000899866-21-000040:0
7,558 sharesCommon StockSEC:0001140361-21-017417:0
11 of 11 declarations
About Brennan David R
David R. Brennan is a Director at INSMED Inc and ALEXION PHARMACEUTICALS, INC. In these roles, he contributes to the strategic direction of the companies and oversees their operations. His expertise in the biopharmaceutical sector is valuable in guiding Insmid and Alexion's strategic decisions.
