ACTIVE POWER INC

CUSIP: 00504W308 Class: COM NEW

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q3 2015
Shares 18,740 Value ($000) $31 Avg Close — Range —
Q2 2015
Shares 18,740 Value ($000) $38 Avg Close — Range —
Q1 2015
Shares 18,740 Value ($000) $41 Avg Close — Range —