Suma Krishnan is President at Krystal Biotech, Inc. (KRYS). They have made 23 open-market trades across 3 companies since 2006, most recently 2026-09-04.
CIK 0001298711
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.
4 open-market purchases totalling $2.3M since 2014, against 19 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| KRYS | 1,302,145 | $412.3M |
| XON | 56,657 | $263K |
| NRPH | 35,217 | — |
| Total | $412.5M |
Shares reported on the most recent Form 4, priced at the 2026-09-04 close. 1 holding could not be priced and is excluded from the total.
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 |
|---|---|---|---|---|---|---|---|---|
| KRYS | SELL · 10b5-1 | 2026-09-04 | 2026-09-04 | $359.32 | $9.0M | -2.5% | -3.9% | — |
| KRYS | SELL · 10b5-1 | 2026-06-04 | 2026-06-05 | $308.11 | $7.7M | +12.9% | +23.7% | +22.5% |
| KRYS | SELL | 2026-03-04 | 2026-03-06 | $263.21 | $6.6M | -1.4% | +2.9% | +21.1% |
| KRYS | SELL · 10b5-1 | 2025-12-04 | 2025-12-05 | $220.30 | $20.9M | -0.7% | +3.1% | +9.7% |
| KRYS | SELL · 10b5-1 | 2025-07-14 | 2025-07-16 | $150.37 | $10.1M | +2.6% | +0.8% | +26.2% |
| KRYS | SELL · 10b5-1 | 2025-07-09 | 2025-07-11 | $150.24 | $4.0M | +3.9% | -6.8% | +28.0% |
| KRYS | SELL · 10b5-1 | 2025-03-13 | 2025-03-13 | $177.81 | $17.6M | +9.8% | -3.6% | -20.3% |
| KRYS | SELL · 10b5-1 | 2024-12-13 | 2024-12-13 | $164.79 | $16.4M | -1.3% | -7.5% | +9.1% |
| KRYS | SELL · 10b5-1 | 2024-09-12 | 2024-09-13 | $197.64 | $18.9M | -11.1% | -11.1% | -14.1% |
| KRYS | SELL · 10b5-1 | 2024-06-11 | 2024-06-11 | $175.93 | $15.4M | -2.0% | +9.1% | +3.2% |
| KRYS | SELL · 10b5-1 | 2024-03-11 | 2024-03-11 | $170.85 | $16.2M | +0.4% | +3.8% | +4.5% |
| KRYS | SELL · 10b5-1 | 2023-12-11 | 2023-12-12 | $105.72 | $10.1M | +11.4% | +12.5% | +53.3% |
| KRYS | SELL · 10b5-1 | 2023-09-11 | 2023-09-12 | $126.84 | $7.8M | -9.6% | -12.9% | -16.7% |
| KRYS | SELL | 2023-05-31 | 2023-06-02 | $116.24 | $9.3M | +5.0% | -5.1% | +1.1% |
| KRYS | SELL · 10b5-1 | 2023-04-17 | 2023-04-18 | $87.49 | $6.7M | -5.2% | -1.3% | +44.3% |
| KRYS | SELL | 2023-01-17 | 2023-01-19 | $80.82 | $4.0M | +3.6% | -3.3% | +11.1% |
| KRYS | SELL | 2023-01-04 | 2023-01-05 | $80.09 | $1.2M | -6.0% | -3.8% | -5.6% |
| KRYS | SELL | 2022-12-29 | 2023-01-03 | $80.32 | $2.6M | +4.1% | +1.1% | +0.8% |
| KRYS | SELL | 2022-12-16 | 2022-12-20 | $80.10 | $3.4M | +5.1% | +4.8% | -0.8% |
| KRYS | SELL · 10b5-1 | 2022-11-23 | 2022-11-28 | $80.01 | $320 | -3.1% | -1.0% | +1.7% |
| KRYS | SELL | 2022-11-08 | 2022-11-10 | $80.05 | $286K | +0.2% | -6.7% | +1.5% |
| KRYS | SELL | 2022-08-05 | 2022-08-09 | $81.18 | $8.1M | -4.2% | -10.5% | -2.0% |
| KRYS | SELL | 2021-12-10 | 2021-12-14 | $70.50 | $7.0M | -0.2% | -14.0% | -13.6% |
| KRYS | SELL | 2020-09-15 | 2020-09-17 | $46.37 | $4.6M | -12.1% | +1.7% | +24.0% |
| KRYS | SELL | 2020-06-15 | 2020-06-17 | $43.50 | $4.3M | -8.7% | -8.9% | +2.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.