Vuong Trieu, CHIEF EXECUTIVE OFFICER at MATEON THERAPEUTICS INC (MATN), bought 50,500 shares at $0.19 ($10K) on 2020-11-19, disclosed to the SEC on 2020-11-23.
Open-market purchase of $10k MATN by CHIEF EXECUTIVE OFFICER. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade D.
Nothing distinguishes this filing.
| Filing → |
| OTLC | BUY | 2026-06-17 | $15K | — | Filing → |
| OTLC | BUY | 2025-07-10 | $2K | — | Filing → |
| OTLC | BUY | 2025-01-31 | $10K | — | Filing → |