PTC THERAPEUTICS INC

Ticker: PTCT CUSIP: 69366J200 Class: Common Stock

MAK CAPITAL ONE LLC's Holding History (CIK: 0001385702)

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

Q3 2018

Shares 221,723 Value ($000) $10,421 Avg Close $41.38 Range $32.13 - $48.85

Q2 2018

Shares 294,018 Value ($000) $9,917 Avg Close $31.18 Range $24.60 - $52.95

Q1 2018

Shares 272,012 Value ($000) $7,361 Avg Close $25.34 Range $16.38 - $33.22

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	221,723	$10,421	$41.38	$32.13 - $48.85
Q2 2018	294,018	$9,917	$31.18	$24.60 - $52.95
Q1 2018	272,012	$7,361	$25.34	$16.38 - $33.22