ALKERMES PLC

Ticker: ALKS CUSIP: G01767105 Class: Common Stock

Granahan Investment Management, LLC's Holding History (CIK: 0001026710)

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

Q3 2017

Shares 101,640 Value ($000) $5,167 Avg Close $53.48 Range $48.90 - $61.31

Q2 2017

Shares 154,005 Value ($000) $8,928 Avg Close $58.09 Range $53.64 - $63.40

Q1 2017

Shares 152,724 Value ($000) $8,934 Avg Close $56.71 Range $51.08 - $62.50

Q4 2016

Shares 607,100 Value ($000) $33,743 Avg Close $53.46 Range $41.93 - $60.74

Q3 2016

Shares 606,500 Value ($000) $28,524 Avg Close $47.55 Range $43.26 - $52.27

Q2 2016

Shares 705,200 Value ($000) $30,479 Avg Close $41.26 Range $33.31 - $47.90

Q1 2016

Shares 535,878 Value ($000) $18,322 Avg Close $39.49 Range $27.14 - $78.88

Q4 2015

Shares 362,500 Value ($000) $28,775 Avg Close $70.02 Range $54.36 - $80.71

Q3 2015

Shares 563,500 Value ($000) $33,061 Avg Close $66.02 Range $53.01 - $73.33

Q2 2015

Shares 569,400 Value ($000) $36,635 Avg Close $61.20 Range $54.54 - $68.23

Q1 2015

Shares 569,400 Value ($000) $34,716 Avg Close $68.32 Range $57.31 - $75.17

Q4 2014

Shares 972,300 Value ($000) $56,938 Avg Close $50.94 Range $38.49 - $59.69

Q3 2014

Shares 972,300 Value ($000) $41,683 Avg Close $44.82 Range $41.02 - $52.50

Q2 2014

Shares 1,057,300 Value ($000) $53,214 Avg Close $46.12 Range $40.30 - $51.81

Q1 2014

Shares 1,057,300 Value ($000) $46,616 Avg Close $47.58 Range $39.68 - $54.25

Q4 2013

Shares 2,268,100 Value ($000) $92,221 Avg Close $36.93 Range $29.36 - $41.47

Q3 2013

Shares 2,469,810 Value ($000) $83,035 Avg Close $32.55 Range $27.72 - $35.72

Q2 2013

Shares 2,655,410 Value ($000) $76,157 Avg Close $29.15 Range $22.17 - $34.30

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2017	101,640	$5,167	$53.48	$48.90 - $61.31
Q2 2017	154,005	$8,928	$58.09	$53.64 - $63.40
Q1 2017	152,724	$8,934	$56.71	$51.08 - $62.50
Q4 2016	607,100	$33,743	$53.46	$41.93 - $60.74
Q3 2016	606,500	$28,524	$47.55	$43.26 - $52.27
Q2 2016	705,200	$30,479	$41.26	$33.31 - $47.90
Q1 2016	535,878	$18,322	$39.49	$27.14 - $78.88
Q4 2015	362,500	$28,775	$70.02	$54.36 - $80.71
Q3 2015	563,500	$33,061	$66.02	$53.01 - $73.33
Q2 2015	569,400	$36,635	$61.20	$54.54 - $68.23
Q1 2015	569,400	$34,716	$68.32	$57.31 - $75.17
Q4 2014	972,300	$56,938	$50.94	$38.49 - $59.69
Q3 2014	972,300	$41,683	$44.82	$41.02 - $52.50
Q2 2014	1,057,300	$53,214	$46.12	$40.30 - $51.81
Q1 2014	1,057,300	$46,616	$47.58	$39.68 - $54.25
Q4 2013	2,268,100	$92,221	$36.93	$29.36 - $41.47
Q3 2013	2,469,810	$83,035	$32.55	$27.72 - $35.72
Q2 2013	2,655,410	$76,157	$29.15	$22.17 - $34.30