PTC THERAPEUTICS INC

Ticker: PTCT CUSIP: 69366J200 Class: Common Stock

BAMCO INC /NY/'s Holding History (CIK: 0001017918)

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

Q1 2021

Shares 708,697 Value ($000) $33,557 Avg Close $59.38 Range $46.51 - $70.82

Q4 2020

Shares 900,110 Value ($000) $54,934 Avg Close $58.94 Range $46.86 - $68.81

Q3 2020

Shares 845,670 Value ($000) $39,535 Avg Close $49.23 Range $44.19 - $58.13

Q2 2020

Shares 650,847 Value ($000) $33,024 Avg Close $49.14 Range $40.03 - $55.00

Q1 2020

Shares 144,545 Value ($000) $6,448 Avg Close $50.35 Range $30.79 - $59.89

Q4 2019

Shares 3,275 Value ($000) $157 Avg Close $42.49 Range $31.49 - $50.96

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	708,697	$33,557	$59.38	$46.51 - $70.82
Q4 2020	900,110	$54,934	$58.94	$46.86 - $68.81
Q3 2020	845,670	$39,535	$49.23	$44.19 - $58.13
Q2 2020	650,847	$33,024	$49.14	$40.03 - $55.00
Q1 2020	144,545	$6,448	$50.35	$30.79 - $59.89
Q4 2019	3,275	$157	$42.49	$31.49 - $50.96