PTC THERAPEUTICS INC

Ticker: PTCT CUSIP: 69366J200 Class: Common Stock

MIDDLETON & CO INC/MA's Holding History (CIK: 0000919497)

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

Q4 2016

Shares 17,640 Value ($000) $192 Avg Close $10.49 Range $4.03 - $14.57

Q3 2016

Shares 42,120 Value ($000) $590 Avg Close $8.13 Range $5.64 - $14.35

Q2 2016

Shares 39,950 Value ($000) $280 Avg Close $7.33 Range $5.78 - $10.15

Q1 2016

Shares 40,170 Value ($000) $259 Avg Close $17.36 Range $5.27 - $31.89

Q4 2015

Shares 39,620 Value ($000) $1,284 Avg Close $29.43 Range $22.67 - $35.76

Q3 2015

Shares 38,585 Value ($000) $1,030 Avg Close $42.77 Range $24.63 - $62.15

Q2 2015

Shares 20,810 Value ($000) $1,002 Avg Close $58.34 Range $46.17 - $78.72

Q1 2015

Shares 9,880 Value ($000) $601 Avg Close $61.01 Range $46.91 - $77.87

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	17,640	$192	$10.49	$4.03 - $14.57
Q3 2016	42,120	$590	$8.13	$5.64 - $14.35
Q2 2016	39,950	$280	$7.33	$5.78 - $10.15
Q1 2016	40,170	$259	$17.36	$5.27 - $31.89
Q4 2015	39,620	$1,284	$29.43	$22.67 - $35.76
Q3 2015	38,585	$1,030	$42.77	$24.63 - $62.15
Q2 2015	20,810	$1,002	$58.34	$46.17 - $78.72
Q1 2015	9,880	$601	$61.01	$46.91 - $77.87