RED ROBIN GOURMET BURGERS IN

Ticker: RRGB CUSIP: 75689M101 Class: Common Stock

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q2 2017

Shares 103,430 Value ($000) $6,749 Avg Close $63.47 Range $54.45 - $74.11

Q3 2015

Shares 17,004 Value ($000) $1,288 Avg Close $84.12 Range $73.35 - $95.00

Q2 2015

Shares 34,862 Value ($000) $2,992 Avg Close $82.39 Range $70.90 - $89.70

Q1 2015

Shares 30,732 Value ($000) $2,674 Avg Close $81.07 Range $71.37 - $89.46

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2017	103,430	$6,749	$63.47	$54.45 - $74.11
Q3 2015	17,004	$1,288	$84.12	$73.35 - $95.00
Q2 2015	34,862	$2,992	$82.39	$70.90 - $89.70
Q1 2015	30,732	$2,674	$81.07	$71.37 - $89.46