GIGAMON INC

CUSIP: 37518B102 Class: COM

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

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

Q3 2017
Shares 1,322,115 Value ($000) $55,727 Avg Close — Range —
Q2 2017
Shares 1,340,215 Value ($000) $52,737 Avg Close — Range —
Q1 2017
Shares 1,105,463 Value ($000) $39,299 Avg Close — Range —