BERTHELSEN SPENCER R (CIK 1181548) reported 5 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-16). Recent activity: Buy IONS (8,000 shares), Sell IONS (8,000 shares), Buy IONS (8,000 shares), Sell IONS (8,000 shares), Buy IONS (4,079 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-16 | IONIS PHARMACEUTICALS INC (IONS) | Director | Buy | 8,000 | $195,360 |
| 2026-06-16 | IONIS PHARMACEUTICALS INC (IONS) | Director | Sell | 8,000 | $587,920 |
| 2026-06-03 | IONIS PHARMACEUTICALS INC (IONS) | Director | Buy | 8,000 | $195,360 |
| 2026-06-03 | IONIS PHARMACEUTICALS INC (IONS) | Director | Sell | 8,000 | $605,360 |
| 2025-07-17 | IONIS PHARMACEUTICALS INC (IONS) | Director | Buy | 4,079 | $0 |
Source: SEC Form 4 filings · as of 2026-06-16