Susan B. Hirsch, Director at TECOGEN INC. (TGEN), bought 5,000 shares at $0.92 ($5K) on 2023-10-19, disclosed to the SEC on 2023-10-20.
Open-market purchase of $5k TGEN by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.
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