ALPHATEC HOLDINGS INC

CUSIP: 02081G102 Class: CMN

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

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

Q2 2015
Shares 324,316 Value ($000) $448 Avg Close — Range —
Q1 2015
Shares 331,136 Value ($000) $480 Avg Close — Range —
Q4 2014
Shares 333,579 Value ($000) $470 Avg Close — Range —
Q3 2014
Shares 386,674 Value ($000) $657 Avg Close — Range —
Q2 2014
Shares 411,601 Value ($000) $671 Avg Close — Range —
Q1 2014
Shares 353,334 Value ($000) $530 Avg Close — Range —
Q4 2013
Shares 351,601 Value ($000) $707 Avg Close — Range —
Q3 2013
Shares 332,174 Value ($000) $654 Avg Close — Range —
Q2 2013
Shares 361,505 Value ($000) $741 Avg Close — Range —