PTC THERAPEUTICS INC

Ticker: PTCT CUSIP: 69366J200 Class: Common Stock

Washington Trust Bank's Holding History (CIK: 0000861787)

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

Q1 2016

Shares 100 Value ($000) $1 Avg Close $17.36 Range $5.27 - $31.89

Q4 2015

Shares 100 Value ($000) $3 Avg Close $29.43 Range $22.67 - $35.76

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2016	100	$1	$17.36	$5.27 - $31.89
Q4 2015	100	$3	$29.43	$22.67 - $35.76