Mark Eisner is EVP & Chief Medical Officer at FIBROGEN INC (FGEN). They have made 6 open-market trades across 2 companies since 2023, most recently 2026-02-25.
CIK 0001834161
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 |
|---|---|---|
| VIR | 155,913 | $1.6M |
| FGEN | 159,917 | $1.6M |
| Total | $3.1M |
Shares reported on the most recent Form 4, priced at the 2026-02-26 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 |
|---|---|---|---|---|---|---|---|---|
| VIR | SELL | 2026-02-24 | 2026-02-26 | $9.69 | $34K | +6.4% | -8.9% | -2.2% |
| VIR | SELL · 10b5-1 | 2026-02-23 | 2026-02-24 | $7.45 | $16K | -2.7% | -8.8% | -4.4% |
| VIR | SELL · 10b5-1 | 2025-07-15 | 2025-07-17 | $5.47 | $57K | -5.6% | -19.4% | +9.2% |
| FGEN | SELL | 2023-06-07 | 2023-06-09 | $17.04 | $35K | -2.4% | -83.7% | -94.2% |
| FGEN | SELL | 2023-06-02 | 2023-06-05 | $18.83 | $21K | -11.5% | -85.3% | -94.5% |
| FGEN | SELL | 2023-04-04 | 2023-04-06 | $18.78 | $345K | +4.5% | -9.0% | -85.6% |
| FGEN | SELL | 2023-03-08 | 2023-03-10 | $20.77 | $516K | -6.2% | -3.2% | -10.3% |
| FGEN | SELL | 2023-03-02 | 2023-03-06 | $21.87 | $26K | -6.0% | -12.3% | -10.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.