CYTOMX THERAPEUTICS INC

Ticker: CTMX CUSIP: 23284F105 Class: COM

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

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

Q2 2017

Shares 290,415 Value ($000) $4,501 Avg Close $15.07 Range $13.00 - $18.01

Q1 2017

Shares 294,694 Value ($000) $5,089 Avg Close $13.16 Range $10.40 - $20.02

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2017	290,415	$4,501	$15.07	$13.00 - $18.01
Q1 2017	294,694	$5,089	$13.16	$10.40 - $20.02