David R Brennan
CIK 1609305 · last filed 2026-05-15
David R Brennan is a corporate insider who has filed 27 SEC Form 4 insider transactions across 1 company since 2015. The most recent filing, for INSM, was dated May 15, 2026. Across all open-market trades the lifetime net is +$301.5K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $12.2M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$12.16M
1
27
$301.5K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| INSM | Director | 124,238 | $97.85 | $12.16M | $301.5K | 16 | 2026-05-15 |
Recent Filings
27 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-15 | INSM | Grant (A) | +3,305 | $0 | EDGAR |
| 2026-02-25 | INSM | Gift (G) | −6,000 | $0 | EDGAR |
| 2025-11-10 | INSM | Gift (G) | — | $0 | EDGAR |
| 2025-05-19 | INSM | Grant (A) | +5,058 | $0 | EDGAR |
| 2024-05-15 | INSM | Grant (A) | +13,162 | $0 | EDGAR |
| 2023-05-15 | INSM | Grant (A) | +13,192 | $0 | EDGAR |
| 2022-05-13 | INSM | Grant (A) | +14,645 | $0 | EDGAR |
| 2021-11-03 | INSM | Buy (P) | +10,000 | $301.5K | EDGAR |
| 2021-07-23 | — | Disp (D) | −20,873 | $0 | |
| 2021-05-24 | — | Grant (A) | +3,336 | $0 |