PTC THERAPEUTICS INC

Ticker: PTCT CUSIP: 69366J200 Class: Common Stock

ADVENT CAPITAL MANAGEMENT /DE/'s Holding History (CIK: 0001097278)

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

Q3 2017

Shares 10,000 Value ($000) $200 Avg Close $19.54 Range $14.56 - $22.00

Q3 2015

Shares 19,697 Value ($000) $526 Avg Close $42.77 Range $24.63 - $62.15

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2017	10,000	$200	$19.54	$14.56 - $22.00
Q3 2015	19,697	$526	$42.77	$24.63 - $62.15