Katherine A. High files SEC Form 4 disclosures for Spark Therapeutics, Inc.. They have made 5 open-market trades across 1 company since 2015, most recently 2026-06-08.
CIK 0001631248
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.
1 open-market purchase totalling $16K since 2015, against 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ONCE | SELL · 10b5-1 | 2017-11-28 | 2017-11-29 | $71.32 | $357K | -35.3% | -30.3% | -21.0% |
| ONCE | SELL · 10b5-1 | 2017-10-31 | 2017-11-06 | $83.30 | $417K | -9.2% | -13.4% | -31.9% |
| ONCE | SELL | 2017-09-26 | 2017-09-28 | $86.16 | $431K | -3.2% | -6.7% | -41.2% |
| ONCE | SELL · 10b5-1 | 2017-08-29 | 2017-09-01 | $80.25 | $803K | -0.4% | +9.5% | -10.3% |
| ONCE | SELL · 10b5-1 | 2017-07-25 | 2017-07-26 | $72.53 | $725K | +6.3% | +8.6% | +15.5% |
| ONCE | SELL · 10b5-1 | 2017-06-27 | 2017-06-29 | $60.96 | $610K | -3.4% | +18.0% | +45.8% |
| ONCE | SELL · 10b5-1 | 2017-06-19 | 2017-06-21 | $60.00 | $600K | -7.4% | +6.5% | +32.4% |
| ONCE | SELL · 10b5-1 | 2017-04-28 | 2017-05-02 | $58.06 | $871K | -2.2% | -11.2% | +20.8% |
| ONCE | SELL · 10b5-1 | 2017-04-24 | 2017-04-26 | $55.33 | $830K | +1.3% | -7.4% | +23.7% |
| ONCE | SELL · 10b5-1 | 2016-11-14 | 2016-11-16 | $60.30 | $603K | -8.4% | -14.3% | +4.7% |
| ONCE | SELL · 10b5-1 | 2016-09-15 | 2016-09-19 | $60.37 | $604K | -7.3% | -18.4% | -19.2% |
| ONCE | SELL · 10b5-1 | 2016-08-15 | 2016-08-17 | $62.76 | $628K | -5.7% | +10.0% | +7.9% |
| ONCE | SELL · 10b5-1 | 2016-08-10 | 2016-08-12 | $60.00 | $113K | -13.2% | -4.5% | -11.9% |
| ONCE | SELL · 10b5-1 | 2016-08-04 | 2016-08-08 | $60.24 | $30K | +0.4% | +0.2% | -19.4% |
| ONCE | SELL · 10b5-1 | 2016-08-01 | 2016-08-03 | $60.02 | $1.1M | +6.5% | -3.1% | -19.8% |
| ONCE | SELL | 2016-05-24 | 2016-05-27 | $54.00 | $540K | -6.4% | -21.0% | -6.9% |
| ONCE | SELL | 2016-05-23 | 2016-05-24 | $54.42 | $544K | +3.6% | -11.5% | +8.4% |
| ONCE | SELL · 10b5-1 | 2015-12-01 | 2015-12-04 | $55.31 | $553K | -31.5% | -6.4% | -23.6% |
| ONCE | SELL · 10b5-1 | 2015-11-16 | 2015-11-18 | $53.77 | $538K | -31.5% | -6.4% | -34.8% |
| ONCE | SELL | 2015-10-13 | 2015-10-14 | $49.01 | $2.0M | -31.5% | -6.4% | -27.4% |
| ONCE | BUY | 2015-02-04 | 2015-02-06 | $23.00 | $16K | -31.5% | -6.4% | -6.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.