ACADIA HEALTHCARE COMPANY IN

Ticker: ACHC CUSIP: 00404A109 Class: Common Stock

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

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

Q2 2016

Shares 47,000 Value ($000) $2,604 Avg Close $58.49 Range $50.30 - $65.00

Q1 2016

Shares 47,263 Value ($000) $2,605 Avg Close $57.07 Range $49.77 - $65.89

Q4 2015

Shares 43,584 Value ($000) $2,722 Avg Close $65.14 Range $54.41 - $74.77

Q3 2015

Shares 37,099 Value ($000) $2,459 Avg Close $76.93 Range $58.70 - $85.62

Q2 2015

Shares 34,407 Value ($000) $2,695 Avg Close $71.98 Range $64.91 - $78.51

Q1 2015

Shares 35,040 Value ($000) $2,509 Avg Close $64.13 Range $55.57 - $73.81

Q4 2014

Shares 35,025 Value ($000) $2,144 Avg Close $58.20 Range $46.87 - $66.88

Q3 2014

Shares 37,722 Value ($000) $1,830 Avg Close $48.89 Range $43.45 - $52.37

Q2 2014

Shares 27,227 Value ($000) $1,239 Avg Close $43.95 Range $38.76 - $49.29

Q1 2014

Shares 31,664 Value ($000) $1,429 Avg Close $49.33 Range $44.00 - $53.87

Q4 2013

Shares 30,725 Value ($000) $1,454 Avg Close $43.45 Range $37.88 - $49.14

Q3 2013

Shares 29,532 Value ($000) $1,164 Avg Close $37.12 Range $30.70 - $41.30

Q2 2013

Shares 30,551 Value ($000) $1,010 Avg Close $32.45 Range $27.85 - $35.78

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2016	47,000	$2,604	$58.49	$50.30 - $65.00
Q1 2016	47,263	$2,605	$57.07	$49.77 - $65.89
Q4 2015	43,584	$2,722	$65.14	$54.41 - $74.77
Q3 2015	37,099	$2,459	$76.93	$58.70 - $85.62
Q2 2015	34,407	$2,695	$71.98	$64.91 - $78.51
Q1 2015	35,040	$2,509	$64.13	$55.57 - $73.81
Q4 2014	35,025	$2,144	$58.20	$46.87 - $66.88
Q3 2014	37,722	$1,830	$48.89	$43.45 - $52.37
Q2 2014	27,227	$1,239	$43.95	$38.76 - $49.29
Q1 2014	31,664	$1,429	$49.33	$44.00 - $53.87
Q4 2013	30,725	$1,454	$43.45	$37.88 - $49.14
Q3 2013	29,532	$1,164	$37.12	$30.70 - $41.30
Q2 2013	30,551	$1,010	$32.45	$27.85 - $35.78