PTC THERAPEUTICS INC

Ticker: PTCT CUSIP: 69366J200 Class: Common Stock

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

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

Q4 2020

Shares 103,229 Value ($000) $6,300 Avg Close $58.94 Range $46.86 - $68.81

Q3 2020

Shares 129,548 Value ($000) $6,056 Avg Close $49.23 Range $44.19 - $58.13

Q2 2020

Shares 205,809 Value ($000) $10,443 Avg Close $49.14 Range $40.03 - $55.00

Q1 2020

Shares 21,544 Value ($000) $961 Avg Close $50.35 Range $30.79 - $59.89

Q4 2019

Shares 79,275 Value ($000) $3,808 Avg Close $42.49 Range $31.49 - $50.96

Q3 2019

Shares 43,794 Value ($000) $1,481 Avg Close $43.52 Range $33.05 - $48.81

Q2 2019

Shares 140,588 Value ($000) $6,326 Avg Close $39.49 Range $34.51 - $45.00

Q1 2019

Shares 370,183 Value ($000) $13,934 Avg Close $33.58 Range $27.53 - $39.67

Q4 2018

Shares 179,179 Value ($000) $6,149 Avg Close $35.96 Range $28.91 - $48.99

Q3 2018

Shares 504,017 Value ($000) $23,689 Avg Close $41.38 Range $32.13 - $48.85

Q2 2018

Shares 56,282 Value ($000) $1,898 Avg Close $31.18 Range $24.60 - $52.95

Q1 2018

Shares 640,281 Value ($000) $17,326 Avg Close $25.34 Range $16.38 - $33.22

Q4 2017

Shares 105,205 Value ($000) $1,755 Avg Close $16.93 Range $14.87 - $21.58

Q3 2017

Shares 247,249 Value ($000) $4,947 Avg Close $19.54 Range $14.56 - $22.00

Q2 2017

Shares 1,311,758 Value ($000) $24,045 Avg Close $13.47 Range $9.41 - $18.86

Q1 2017

Shares 1,331,440 Value ($000) $13,101 Avg Close $12.10 Range $8.12 - $16.50

Q4 2016

Shares 1,369,737 Value ($000) $14,944 Avg Close $10.49 Range $4.03 - $14.57

Q3 2016

Shares 1,173,378 Value ($000) $16,439 Avg Close $8.13 Range $5.64 - $14.35

Q2 2016

Shares 1,433,975 Value ($000) $10,067 Avg Close $7.33 Range $5.78 - $10.15

Q1 2016

Shares 967,367 Value ($000) $6,230 Avg Close $17.36 Range $5.27 - $31.89

Q4 2015

Shares 251,984 Value ($000) $8,164 Avg Close $29.43 Range $22.67 - $35.76

Q3 2015

Shares 435,044 Value ($000) $11,616 Avg Close $42.77 Range $24.63 - $62.15

Q2 2015

Shares 618,725 Value ($000) $29,779 Avg Close $58.34 Range $46.17 - $78.72

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2020	103,229	$6,300	$58.94	$46.86 - $68.81
Q3 2020	129,548	$6,056	$49.23	$44.19 - $58.13
Q2 2020	205,809	$10,443	$49.14	$40.03 - $55.00
Q1 2020	21,544	$961	$50.35	$30.79 - $59.89
Q4 2019	79,275	$3,808	$42.49	$31.49 - $50.96
Q3 2019	43,794	$1,481	$43.52	$33.05 - $48.81
Q2 2019	140,588	$6,326	$39.49	$34.51 - $45.00
Q1 2019	370,183	$13,934	$33.58	$27.53 - $39.67
Q4 2018	179,179	$6,149	$35.96	$28.91 - $48.99
Q3 2018	504,017	$23,689	$41.38	$32.13 - $48.85
Q2 2018	56,282	$1,898	$31.18	$24.60 - $52.95
Q1 2018	640,281	$17,326	$25.34	$16.38 - $33.22
Q4 2017	105,205	$1,755	$16.93	$14.87 - $21.58
Q3 2017	247,249	$4,947	$19.54	$14.56 - $22.00
Q2 2017	1,311,758	$24,045	$13.47	$9.41 - $18.86
Q1 2017	1,331,440	$13,101	$12.10	$8.12 - $16.50
Q4 2016	1,369,737	$14,944	$10.49	$4.03 - $14.57
Q3 2016	1,173,378	$16,439	$8.13	$5.64 - $14.35
Q2 2016	1,433,975	$10,067	$7.33	$5.78 - $10.15
Q1 2016	967,367	$6,230	$17.36	$5.27 - $31.89
Q4 2015	251,984	$8,164	$29.43	$22.67 - $35.76
Q3 2015	435,044	$11,616	$42.77	$24.63 - $62.15
Q2 2015	618,725	$29,779	$58.34	$46.17 - $78.72