Bradley Sitko is CIO at XOMA Royalty Corp (XOMA). They have made 12 open-market trades across 1 company since 2023, most recently 2026-04-20.
CIK 0001959809
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
12 open-market purchases totalling $401K since 2023, never a sale. Across 12 scored buys the stock is up 2.9% at ninety days, and 2.6 points behind the S&P over the same stretch.
12 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| XOMA | 82,961 | $3.3M |
Shares reported on the most recent Form 4, priced at the 2026-04-22 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 42% | 50% | 42% |
| Avg Move | -0.7% | +3.6% | +2.9% |
| Alpha | -1.0% | +0.5% | -2.6% |
| Scored | 12 | 12 | 12 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| XOMA | BUY | 2025-06-30 | 2025-07-02 | $25.39 | $51K | -1.8% | -7.4% | +44.1% |
| XOMA | BUY | 2025-04-07 | 2025-04-09 | $24.70 | $49K | +18.0% | +23.3% | +34.9% |
| XOMA | BUY | 2025-03-31 | 2025-04-02 | $19.98 | $20K | +4.9% | +25.8% | +36.3% |
| XOMA | BUY | 2025-03-21 | 2025-03-25 | $23.89 | $99K | -7.4% | +15.4% | +24.9% |
| XOMA | BUY | 2025-01-08 | 2025-01-10 | $25.75 | $4K | +5.6% | +6.9% | -20.0% |
| XOMA | BUY | 2024-12-31 | 2025-01-03 | $25.90 | $8K | +1.4% | -7.5% | -26.4% |
| XOMA | BUY | 2023-10-02 | 2023-10-04 | $14.20 | $25K | +14.0% | +24.6% | +41.7% |
| XOMA | BUY | 2023-05-31 | 2023-06-02 | $17.13 | $26K | -6.6% | -4.2% | -23.8% |
| XOMA | BUY | 2023-05-23 | 2023-05-25 | $19.00 | $16K | -2.0% | +0.6% | -14.6% |
| XOMA | BUY | 2023-05-19 | 2023-05-22 | $19.50 | $20K | -8.3% | -5.3% | -19.2% |
| XOMA | BUY | 2023-05-16 | 2023-05-17 | $23.20 | $12K | -13.1% | -13.9% | -22.0% |
| XOMA | BUY | 2023-05-12 | 2023-05-16 | $20.88 | $73K | -13.1% | -14.9% | -21.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.