Brennan David R (CIK 1609305) reported 6 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-09-11). Recent activity: Sell INSM (25,000 shares), Buy INSM (3,305 shares), Sell INSM (6,000 shares), Sell INSM (60,000 shares), Buy INSM (60,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-11 | INSMED Inc (INSM) | Director | Sell | 25,000 | $3.1M |
| 2026-05-15 | INSMED Inc (INSM) | Director | Buy | 3,305 | $0 |
| 2026-02-25 | INSMED Inc (INSM) | Director | Sell | 6,000 | $0 |
| 2025-11-10 | INSMED Inc (INSM) | Director | Sell | 60,000 | $0 |
| 2025-11-10 | INSMED Inc (INSM) | Director | Buy | 60,000 | $0 |
| 2025-05-19 | INSMED Inc (INSM) | Director | Buy | 5,058 | $0 |
Source: SEC Form 4 filings · as of 2026-09-11