David S. Chernow is CEO & President at SELECT MEDICAL HOLDINGS CORP (SEM). They have made 17 open-market trades across 1 company since 2012, most recently 2026-06-30.
CIK 0001169897
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 17 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SEM | 870,244 | $14.4M |
Shares reported on the most recent Form 4, priced at the 2026-05-01 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SEM | SELL · 10b5-1 | 2025-04-28 | 2025-04-29 | $18.00 | $4.0M | -17.5% | -16.1% | -21.7% |
| SEM | SELL | 2023-02-27 | 2023-02-28 | $27.30 | $3.8M | -7.5% | -6.2% | +1.1% |
| SEM | SELL | 2021-08-09 | 2021-08-11 | $36.14 | $5.0M | -7.9% | -3.3% | -3.8% |
| SEM | SELL | 2020-11-09 | 2020-11-10 | $25.00 | $2.8M | -3.1% | +4.1% | +7.7% |
| SEM | SELL | 2019-11-01 | 2019-11-01 | $19.27 | $1.3M | +3.7% | +14.1% | +21.0% |
| SEM | SELL | 2019-10-29 | 2019-10-31 | $18.09 | $2.8M | +8.9% | +19.7% | +30.6% |
| SEM | SELL | 2018-08-08 | 2018-08-09 | $19.40 | $1.5M | +4.5% | -1.1% | +6.1% |
| SEM | SELL | 2018-08-07 | 2018-08-07 | $19.81 | $1.6M | -1.8% | -1.8% | +0.5% |
| SEM | SELL | 2017-09-14 | 2017-09-15 | $17.85 | $4.7M | +1.6% | -0.3% | -8.5% |
| SEM | SELL | 2017-05-08 | 2017-05-09 | $14.01 | $2.6M | +0.7% | +1.4% | +27.8% |
| SEM | SELL | 2016-09-30 | 2016-10-04 | $13.51 | $676K | -0.5% | -13.5% | -2.0% |
| SEM | SELL | 2016-09-07 | 2016-09-07 | $12.29 | $294K | +2.0% | +13.4% | -1.1% |
| SEM | SELL | 2016-09-06 | 2016-09-07 | $12.01 | $246K | +2.0% | +13.4% | -1.1% |
| SEM | SELL | 2016-09-02 | 2016-09-07 | $12.06 | $552K | +2.0% | +13.4% | -1.1% |
| SEM | SELL | 2016-09-02 | 2016-09-07 | $12.11 | $1.1M | +2.0% | +13.4% | -1.1% |
| SEM | SELL · 10b5-1 | 2016-08-30 | 2016-09-01 | $12.00 | $16K | +4.1% | +14.3% | +2.6% |
| SEM | SELL | 2016-08-08 | 2016-08-10 | $12.13 | $104K | -1.1% | +2.5% | -2.0% |
| SEM | SELL · 10b5-1 | 2015-07-01 | 2015-07-02 | $16.38 | $639K | -12.3% | +1.6% | +1.6% |
| SEM | SELL · 10b5-1 | 2014-10-01 | 2014-10-03 | $12.07 | $1.2M | -12.3% | +1.6% | +1.6% |
| SEM | SELL | 2012-09-07 | 2012-09-11 | $10.46 | $126K | -12.3% | +1.6% | +1.6% |
| SEM | SELL | 2012-08-22 | 2012-08-24 | $10.36 | $152K | -12.3% | +1.6% | +1.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.