PTC THERAPEUTICS INC

Ticker: PTCT CUSIP: 69366J200 Class: Common Stock

BROWN BROTHERS HARRIMAN & CO's Holding History (CIK: 0000014661)

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

Q1 2021

Shares 1,000 Value ($000) $47 Avg Close $59.38 Range $46.51 - $70.82

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	1,000	$47	$59.38	$46.51 - $70.82