GIGAMON INC

CUSIP: 37518B102 Class: COM

STATE OF WISCONSIN INVESTMENT BOARD's Holding History (CIK: 0000854157)

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

Q3 2017
Shares 248,100 Value ($000) $10,457 Avg Close — Range —
Q2 2017
Shares 248,100 Value ($000) $9,763 Avg Close — Range —
Q1 2017
Shares 273,500 Value ($000) $9,723 Avg Close — Range —
Q4 2016
Shares 229,619 Value ($000) $10,459 Avg Close — Range —
Q3 2016
Shares 220,000 Value ($000) $12,056 Avg Close — Range —
Q2 2016
Shares 190,000 Value ($000) $7,104 Avg Close — Range —
Q1 2016
Shares 200,000 Value ($000) $6,204 Avg Close — Range —
Q4 2015
Shares 190,000 Value ($000) $5,048 Avg Close — Range —
Q3 2015
Shares 210,000 Value ($000) $4,202 Avg Close — Range —
Q2 2015
Shares 200,000 Value ($000) $6,598 Avg Close — Range —
Q1 2015
Shares 213,000 Value ($000) $4,524 Avg Close — Range —
Q4 2014
Shares 213,000 Value ($000) $3,776 Avg Close — Range —
Q3 2014
Shares 260,000 Value ($000) $2,722 Avg Close — Range —
Q2 2014
Shares 260,000 Value ($000) $4,976 Avg Close — Range —