Marianne de Backer is Director at ARROWHEAD PHARMACEUTICALS, INC. (ARWR). They have made 11 open-market trades across 3 companies since 2020, most recently 2026-04-06.
CIK 0001797819
5 open-market purchases totalling $233K since 2020, against 6 sales. Across 5 scored buys the stock is down 5.9% at ninety days, and 11.8 points behind the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| VIR | 948,145 | $9.5M |
| ARWR | 31,267 | $1.7M |
| KRON | 14,083 | $12K |
| Total | $11.2M |
Shares reported on the most recent Form 4, priced at the 2026-04-07 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 100% | 60% | 40% |
| Avg Move | +9.1% | +10.6% | -5.9% |
| Alpha | +7.2% | +7.0% | -11.8% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| VIR | SELL · 10b5-1 | 2026-04-06 | 2026-04-07 | $9.16 | $664K | +13.5% | -2.1% | +5.7% |
| VIR | SELL · 10b5-1 | 2026-02-24 | 2026-02-26 | $9.53 | $141K | +6.4% | -8.9% | -2.2% |
| VIR | SELL | 2026-02-23 | 2026-02-24 | $7.45 | $142K | -2.7% | -8.8% | -4.4% |
| VIR | SELL | 2025-04-03 | 2025-04-04 | $5.95 | $949K | +4.1% | +17.8% | +3.6% |
| VIR | SELL | 2025-02-24 | 2025-02-25 | $9.45 | $305K | -11.8% | -26.1% | -48.4% |
| VIR | SELL | 2024-04-03 | 2024-04-04 | $9.46 | $1.4M | -10.0% | +10.0% | -5.7% |
| ARWR | SELL | 2022-01-03 | 2022-01-04 | $64.80 | $420K | -10.2% | -23.9% | -21.4% |
| KRON | BUY | 2021-12-01 | 2021-12-02 | $11.57 | $13K | +10.7% | +22.0% | -38.1% |
| KRON | BUY | 2021-08-20 | 2021-08-24 | $19.57 | $20K | +3.6% | +18.6% | -28.6% |
| ARWR | SELL | 2021-06-24 | 2021-06-25 | $89.85 | $449K | -26.9% | -25.4% | -27.6% |
| KRON | BUY | 2021-05-28 | 2021-06-01 | $25.01 | $15K | +8.3% | -0.5% | -15.1% |
| ARWR | BUY | 2020-10-08 | 2020-10-26 | $50.47 | $50K | +10.5% | -4.5% | +40.9% |
| ARWR | BUY | 2020-01-13 | 2020-06-24 | $33.56 | $134K | +12.3% | +17.3% | +11.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.