PTC THERAPEUTICS INC

Ticker: PTCT CUSIP: 69366J200 Class: Common Stock

Canton Hathaway, LLC's Holding History (CIK: 0001755785)

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

Q3 2019

Shares 1,100 Value ($000) $37 Avg Close $43.52 Range $33.05 - $48.81

Q2 2019

Shares 1,100 Value ($000) $50 Avg Close $39.49 Range $34.51 - $45.00

Q1 2019

Shares 1,100 Value ($000) $41 Avg Close $33.58 Range $27.53 - $39.67

Q4 2018

Shares 1,100 Value ($000) $38 Avg Close $35.96 Range $28.91 - $48.99

Q3 2018

Shares 700 Value ($000) $33 Avg Close $41.38 Range $32.13 - $48.85

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2019	1,100	$37	$43.52	$33.05 - $48.81
Q2 2019	1,100	$50	$39.49	$34.51 - $45.00
Q1 2019	1,100	$41	$33.58	$27.53 - $39.67
Q4 2018	1,100	$38	$35.96	$28.91 - $48.99
Q3 2018	700	$33	$41.38	$32.13 - $48.85