ALKERMES PLC

Ticker: ALKS CUSIP: G01767105 Class: Common Stock

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

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

Q1 2019

Shares 91,507 Value ($000) $3,339 Avg Close $33.02 Range $28.19 - $36.56

Q3 2018

Shares 707,498 Value ($000) $30,026 Avg Close $43.40 Range $38.23 - $46.98

Q2 2018

Shares 683,723 Value ($000) $28,142 Avg Close $45.54 Range $39.54 - $51.70

Q1 2018

Shares 720,866 Value ($000) $41,781 Avg Close $58.50 Range $51.68 - $71.22

Q4 2017

Shares 671,048 Value ($000) $36,726 Avg Close $51.03 Range $46.43 - $56.58

Q3 2017

Shares 786,743 Value ($000) $39,998 Avg Close $53.48 Range $48.90 - $61.31

Q2 2017

Shares 903,692 Value ($000) $52,387 Avg Close $58.09 Range $53.64 - $63.40

Q1 2017

Shares 929,038 Value ($000) $54,349 Avg Close $56.71 Range $51.08 - $62.50

Q4 2016

Shares 942,034 Value ($000) $52,358 Avg Close $53.46 Range $41.93 - $60.74

Q3 2016

Shares 952,674 Value ($000) $44,804 Avg Close $47.55 Range $43.26 - $52.27

Q2 2016

Shares 875,951 Value ($000) $37,859 Avg Close $41.26 Range $33.31 - $47.90

Q1 2016

Shares 1,005,899 Value ($000) $34,392 Avg Close $39.49 Range $27.14 - $78.88

Q4 2015

Shares 1,047,772 Value ($000) $83,172 Avg Close $70.02 Range $54.36 - $80.71

Q3 2015

Shares 1,087,313 Value ($000) $63,793 Avg Close $66.02 Range $53.01 - $73.33

Q2 2015

Shares 1,422,957 Value ($000) $91,553 Avg Close $61.20 Range $54.54 - $68.23

Q1 2015

Shares 2,129,590 Value ($000) $129,841 Avg Close $68.32 Range $57.31 - $75.17

Q4 2014

Shares 3,324,009 Value ($000) $194,654 Avg Close $50.94 Range $38.49 - $59.69

Q3 2014

Shares 3,043,818 Value ($000) $130,488 Avg Close $44.82 Range $41.02 - $52.50

Q2 2014

Shares 3,602,431 Value ($000) $181,310 Avg Close $46.12 Range $40.30 - $51.81

Q1 2014

Shares 3,638,178 Value ($000) $160,407 Avg Close $47.58 Range $39.68 - $54.25

Q4 2013

Shares 4,461,781 Value ($000) $181,416 Avg Close $36.93 Range $29.36 - $41.47

Q3 2013

Shares 5,010,825 Value ($000) $168,464 Avg Close $32.55 Range $27.72 - $35.72

Q2 2013

Shares 3,495,480 Value ($000) $100,250 Avg Close $29.15 Range $22.17 - $34.30

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	91,507	$3,339	$33.02	$28.19 - $36.56
Q3 2018	707,498	$30,026	$43.40	$38.23 - $46.98
Q2 2018	683,723	$28,142	$45.54	$39.54 - $51.70
Q1 2018	720,866	$41,781	$58.50	$51.68 - $71.22
Q4 2017	671,048	$36,726	$51.03	$46.43 - $56.58
Q3 2017	786,743	$39,998	$53.48	$48.90 - $61.31
Q2 2017	903,692	$52,387	$58.09	$53.64 - $63.40
Q1 2017	929,038	$54,349	$56.71	$51.08 - $62.50
Q4 2016	942,034	$52,358	$53.46	$41.93 - $60.74
Q3 2016	952,674	$44,804	$47.55	$43.26 - $52.27
Q2 2016	875,951	$37,859	$41.26	$33.31 - $47.90
Q1 2016	1,005,899	$34,392	$39.49	$27.14 - $78.88
Q4 2015	1,047,772	$83,172	$70.02	$54.36 - $80.71
Q3 2015	1,087,313	$63,793	$66.02	$53.01 - $73.33
Q2 2015	1,422,957	$91,553	$61.20	$54.54 - $68.23
Q1 2015	2,129,590	$129,841	$68.32	$57.31 - $75.17
Q4 2014	3,324,009	$194,654	$50.94	$38.49 - $59.69
Q3 2014	3,043,818	$130,488	$44.82	$41.02 - $52.50
Q2 2014	3,602,431	$181,310	$46.12	$40.30 - $51.81
Q1 2014	3,638,178	$160,407	$47.58	$39.68 - $54.25
Q4 2013	4,461,781	$181,416	$36.93	$29.36 - $41.47
Q3 2013	5,010,825	$168,464	$32.55	$27.72 - $35.72
Q2 2013	3,495,480	$100,250	$29.15	$22.17 - $34.30