TECOGEN INC NEW

Ticker: TGEN CUSIP: 87876P201 Class: COM

Chesley Taft & Associates LLC's Holding History (CIK: 0001164632)

Note: Option positions (PUT/CALL) are excluded.

Q2 2015
Shares 10,000 Value ($000) $41 Avg Close $4.52 Range $3.90 - $5.19
Q1 2015
Shares 10,000 Value ($000) $51 Avg Close $5.06 Range $4.55 - $5.65