David Shook files SEC Form 4 disclosures for Nkarta, Inc.. They have made 8 open-market trades across 2 companies since 2023, most recently 2026-09-10.
CIK 0001959742
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.
0 open-market purchases, against 8 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| NKTX | 190,955 | $330K |
| LYEL | 20,423 | $315K |
| Total | $645K |
Shares reported on the most recent Form 4, priced at the 2026-09-10 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| LYEL | SELL | 2026-09-10 | 2026-09-10 | $12.70 | $6K | -9.2% | -32.9% | — |
| LYEL | SELL | 2026-06-10 | 2026-06-11 | $12.64 | $25K | -2.8% | +7.1% | -3.9% |
| NKTX | SELL | 2025-01-15 | 2025-01-17 | $2.20 | $19K | -5.6% | -9.2% | -27.6% |
| NKTX | SELL | 2024-06-18 | 2024-06-20 | $5.60 | $3K | -1.5% | +21.2% | -1.3% |
| NKTX | SELL | 2024-01-16 | 2024-01-18 | $8.74 | $31K | +10.0% | +23.0% | -6.3% |
| NKTX | SELL | 2023-08-21 | 2023-08-23 | $1.83 | $2K | -1.6% | -13.0% | +36.8% |
| NKTX | SELL | 2023-06-20 | 2023-06-22 | $4.85 | $2K | -53.2% | -52.5% | -62.5% |
| NKTX | SELL | 2023-01-17 | 2023-01-18 | $5.49 | $961 | -1.4% | +5.6% | -7.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.