PTC THERAPEUTICS INC

Ticker: PTCT CUSIP: 69366J200 Class: Common Stock

SILVERBACK ASSET MANAGEMENT LLC's Holding History (CIK: 0001278960)

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

Q4 2015

Shares 15,900 Value ($000) $515 Avg Close $29.43 Range $22.67 - $35.76

Q3 2015

Shares 27,000 Value ($000) $721 Avg Close $42.77 Range $24.63 - $62.15

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	15,900	$515	$29.43	$22.67 - $35.76
Q3 2015	27,000	$721	$42.77	$24.63 - $62.15