ROSETTA STONE INC

CUSIP: 777780107 Class: COM

DISCIPLINED GROWTH INVESTORS INC /MN's Holding History (CIK: 0001050442)

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

Q4 2014
Shares 116,100 Value ($000) $1,133 Avg Close — Range —
Q3 2014
Shares 120,650 Value ($000) $971 Avg Close — Range —
Q2 2014
Shares 121,600 Value ($000) $1,182 Avg Close — Range —
Q1 2014
Shares 135,575 Value ($000) $1,521 Avg Close — Range —
Q4 2013
Shares 142,900 Value ($000) $1,746 Avg Close — Range —
Q3 2013
Shares 143,950 Value ($000) $2,336 Avg Close — Range —
Q2 2013
Shares 143,850 Value ($000) $2,120 Avg Close — Range —