Sung Lee is CFO & VP at CYTOKINETICS INC (CYTK). They have made 6 open-market trades across 2 companies since 2024, most recently 2026-07-01.
CIK 0001793200
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 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CYTK | 63,221 | $3.9M |
| VIR | 100,492 | $1.0M |
| TNGX | 22,870 | $504K |
| SGMO | 88,708 | $16K |
| Total | $5.4M |
Shares reported on the most recent Form 4, priced at the 2026-07-02 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 |
|---|---|---|---|---|---|---|---|---|
| CYTK | SELL | 2026-07-01 | 2026-07-02 | $87.79 | $98K | -4.4% | -11.5% | -23.7% |
| CYTK | SELL | 2026-06-29 | 2026-06-29 | $85.00 | $266K | -3.2% | -10.5% | -24.4% |
| CYTK | SELL | 2026-06-24 | 2026-06-29 | $82.30 | $3.2M | -3.2% | -10.5% | -24.4% |
| CYTK | SELL | 2026-05-05 | 2026-05-05 | $76.87 | $1.8M | -3.1% | -7.6% | -2.3% |
| CYTK | SELL | 2026-03-17 | 2026-03-18 | $62.15 | $307K | +1.6% | +7.6% | +21.3% |
| VIR | SELL | 2024-03-27 | 2024-03-28 | $9.89 | $119K | -10.4% | -17.5% | -10.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.