PTC THERAPEUTICS INC

Ticker: PTCT CUSIP: 69366J200 Class: Common Stock

Zuckerman Investment Group, LLC's Holding History (CIK: 0001423296)

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

Q3 2018

Shares 4,421 Value ($000) $208 Avg Close $41.38 Range $32.13 - $48.85

Q2 2018

Shares 16,579 Value ($000) $559 Avg Close $31.18 Range $24.60 - $52.95

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	4,421	$208	$41.38	$32.13 - $48.85
Q2 2018	16,579	$559	$31.18	$24.60 - $52.95