STRATASYS LTD

Ticker: SSYS CUSIP: M85548101 Class: SHS

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q4 2014

Shares 458,115 Value ($000) $38,074 Avg Close $102.32 Range $76.60 - $125.00

Q3 2014

Shares 293,780 Value ($000) $31,167 Avg Close $113.02 Range $95.38 - $130.83

Q2 2014

Shares 332,290 Value ($000) $37,758 Avg Close $98.05 Range $85.30 - $115.75

Q1 2014

Shares 293,780 Value ($000) $31,167 Avg Close $119.56 Range $100.46 - $138.10

Q4 2013

Shares 237,427 Value ($000) $31,981 Avg Close $115.63 Range $89.90 - $134.87

Q3 2013

Shares 378,540 Value ($000) $45,720 Avg Close $96.82 Range $83.00 - $113.49

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2014	458,115	$38,074	$102.32	$76.60 - $125.00
Q3 2014	293,780	$31,167	$113.02	$95.38 - $130.83
Q2 2014	332,290	$37,758	$98.05	$85.30 - $115.75
Q1 2014	293,780	$31,167	$119.56	$100.46 - $138.10
Q4 2013	237,427	$31,981	$115.63	$89.90 - $134.87
Q3 2013	378,540	$45,720	$96.82	$83.00 - $113.49