Brennan David R insider trades
Brennan David R has filed 10 Form 4s with the SEC that we hold, for INSMED Inc (INSM) (Director) and ALXN (Director). Across all of them we count 1 purchase worth $301.5K and 1 sale worth $3.1M reported on Form 4. In the last 12 months: 0 purchases ($0) and 1 sale ($3.1M). The largest single trade was a sale of 25,000 shares of INSMED Inc worth $3.1M, dated 2026-09-09. Of 1 sale filed since we began reading the 10b5-1 checkbox, 0 (0%) were marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2021-07-23 and the latest 2026-09-11.
INSMED Inc (INSM)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2021-11-01 | P, purchase reported on Form 4 | 10,000 | $301.5K | 2021-11-03 |
| 2026-09-09 | S, sale reported on Form 4 | 25,000 | $3.1M | 2026-09-11 |
ALXN
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Counted from the Form 4 filings this reporting owner (SEC CIK 1609305) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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