THE ADT CORPORATION

CUSIP: 00101J106 Class: COM

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

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

Q1 2014
Shares 25,031 Value ($000) $750 Avg Close — Range —
Q4 2013
Shares 31,299 Value ($000) $1,267 Avg Close — Range —