No open-market buys or sells in this period. The transactions below are grants, option exercises and gifts, which carry no market price.
Trading track record · all companies
Not enough open-market trades to chart a track record yet.
Running net of open-market buys − sells across every company. Tap the line or a marker for details. ▲ buy · ▼ sell.
Transactions · 365d
No open-market buys or sells in this period — showing all activity (grants, exercises & gifts).
-
SEM Other·F
Vice Chairman
$370.6K
22.6K sh · $16.41
Own -3%
-
SEM Other·F
CEO
$617.2K
49.1K sh · $12.57
Own -5%
-
SEM Grant·A
CEO
$0
250.0K sh
Own +36%
| Date▾ | Ticker | Type | Shares | Value |
|---|---|---|---|---|
| Apr 30, 2026 | SEM | Other F | 22.6K | $370.6K |
| Aug 1, 2025 | SEM | Other F | 49.1K | $617.2K |
| Jul 29, 2025 | SEM | Grant A | 250.0K | $0 |
Buy Sell Non-market (grant · exercise · gift)
About CHERNOW DAVID S
This profile aggregates every SEC Form 4 insider transaction reported by CHERNOW DAVID S across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.