Hatsopoulos John

Hatsopoulos John is listed in filings as Director at Tecogen Inc.. This profile follows SEC Form 4 activity through Mar 23, 2026, including purchase activity. Recent filings connect the profile to Tecogen Inc. (TGEN). The current snapshot covers public activity from Jul 12, 2024 to Mar 23, 2026. Reported amounts are shown as $44.0K to $8.6K. The page organizes purchases, sales, issuer links, reported share activity, and filing evidence for review as public disclosure data.