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).
-
AMPL Grant·A
Director
$0
1.5K sh
Own +2%
-
AMPL Grant·A
Director
$0
999 sh
Own +1%
-
AMPL Grant·A
Director
$0
977 sh
Own +1%
-
AMPL Grant·A
Director
$0
894 sh
Own +1%
| Date▾ | Ticker | Type | Shares | Value |
|---|---|---|---|---|
| Apr 5, 2026 | AMPL | Grant A | 1.5K | $0 |
| Jan 5, 2026 | AMPL | Grant A | 999 | $0 |
| Oct 5, 2025 | AMPL | Grant A | 977 | $0 |
| Jul 5, 2025 | AMPL | Grant A | 894 | $0 |
Buy Sell Non-market (grant · exercise · gift)
About Tzuo Tien
This profile aggregates every SEC Form 4 insider transaction reported by Tzuo Tien 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.