ASPEN TECHNOLOGY INC

CUSIP: 045327103 Class: COM

NEXT CENTURY GROWTH INVESTORS LLC's Holding History (CIK: 0001134007)

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

Q3 2014
Shares 395,391 Value ($000) $14,914 Avg Close — Range —
Q2 2014
Shares 539,903 Value ($000) $25,051 Avg Close — Range —
Q1 2014
Shares 546,041 Value ($000) $23,130 Avg Close — Range —
Q4 2013
Shares 561,426 Value ($000) $23,467 Avg Close — Range —
Q3 2013
Shares 585,124 Value ($000) $20,216 Avg Close — Range —
Q2 2013
Shares 595,636 Value ($000) $17,148 Avg Close — Range —