DAVID S CHERNOW
CIK 1169897 · Vice Chairman · last filed 2026-05-01
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$14.50M
Companies
1
Total Filings
49
Lifetime Open-Market Net
-$27.33M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| SEM | Vice Chairman | 870,244 | $16.66 | $14.50M | -$27.33M | 49 | 2026-05-01 |
Recent Filings · Page 3 of 5
49 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2020-07-30 | SEM | Grant (A) | +250,000 | $0 | EDGAR |
| 2019-11-01 | SEM | Sell (S) | −32,446 | -$625.2K | EDGAR |
| 2019-10-31 | SEM | Sell (S) | −79,194 | -$1.43M | EDGAR |
| 2019-08-05 | SEM | Tax (F) | −88,360 | -$1.39M | EDGAR |
| 2019-08-01 | SEM | Grant (A) | +250,000 | $0 | EDGAR |
| 2018-08-09 | SEM | Sell (S) | −38,613 | -$749.1K | EDGAR |
| 2018-08-07 | SEM | Mixed | −129,562 | -$2.60M | EDGAR |
| 2018-08-02 | SEM | Grant (A) | +250,000 | $0 | EDGAR |
| 2017-09-15 | SEM | Sell (S) | −133,025 | -$2.37M | EDGAR |
| 2017-08-18 | SEM | Tax (F) | −70,185 | -$1.20M | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.