Tecogen prepays $1M in notes to director Hatsopoulos; eliminates all outstanding debt

TECOGEN INC.

Prepaid two promissory notes to director John N. Hatsopoulos totaling $1M principal plus $76,955.62 interest.
October 2023 note ($500k, 5.12%) and July 2024 note ($500k, 5.06%) repaid on Sept 3 and 4, 2025.
Aggregate payment of $1,076,955.62 eliminated all outstanding debt of the Company.
Prepayment avoided approximately $46,159 in future interest charges through original maturity (July 31, 2026).
Audit Committee approved the prepayment under the Company's Related Person Transactions Policy.

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