Susan B. Hirsch, Director at TECOGEN INC. (TGEN), bought 5,000 shares at $3.73 ($19K) on 2026-04-13, disclosed to the SEC on 2026-04-14.
Open-market purchase of $19k TGEN by Director. 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.
Something here stands out, but not much.
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