CEB INC

CUSIP: 125134106 Class: COM

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q4 2016
Shares 55 Value ($000) $3 Avg Close — Range —
Q1 2016
Shares 204 Value ($000) $13 Avg Close — Range —
Q2 2015
Shares 2,354 Value ($000) $204 Avg Close — Range —