John Kimball Whiting IV is CLO & Secretary at TECOGEN INC. (TGEN). They have made 1 open-market trade across 1 company since 2026, most recently 2026-06-26.
CIK 0001808199
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $24K since 2026, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| TGEN | 19,342 | $40K |
Shares reported on the most recent Form 4, priced at the 2026-06-30 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| TGEN | BUY | 2026-03-23 | 2026-03-23 | $2.38 | $24K | +23.7% | +83.1% | +157.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.