William H. Chang is 10% Owner at Semler Scientific, Inc. (SMLR). They have made 8 open-market trades across 1 company since 2014, most recently 2026-01-16.
CIK 0001594408
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.
5 open-market purchases totalling $1.6M since 2014, against 3 sales. Across 5 scored buys the stock is up 2.9% at ninety days, and 1.8 points ahead of the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 0% | 80% | 80% |
| Avg Move | -4.6% | +2.9% | +2.9% |
| Alpha | +0.2% | +2.7% | +1.8% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SMLR | SELL | 2021-06-02 | 2021-06-04 | $110.67 | $737K | +0.0% | +0.0% | +0.0% |
| SMLR | SELL | 2020-01-23 | 2020-01-27 | $50.00 | $50K | +0.0% | +0.0% | +0.0% |
| SMLR | SELL | 2020-01-17 | 2020-01-23 | $50.10 | $1.5M | +0.0% | +0.0% | +0.0% |
| SMLR | BUY | 2018-04-20 | 2018-06-07 | $8.34 | $400K | +0.0% | +0.0% | +0.0% |
| SMLR | BUY | 2015-07-15 | 2015-07-20 | $3.00 | $100K | -5.7% | +3.7% | +3.7% |
| SMLR | BUY | 2015-03-02 | 2015-03-03 | $4.10 | $256K | -5.7% | +3.7% | +3.7% |
| SMLR | BUY | 2015-02-24 | 2015-02-26 | $4.52 | $249K | -5.7% | +3.7% | +3.7% |
| SMLR | BUY | 2014-02-20 | 2014-02-21 | $7.00 | $625K | -5.7% | +3.7% | +3.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.