WESTERN DIGITAL CORP

Ticker: WDC CUSIP: 958102105 Class: EQTY

AMICA MUTUAL INSURANCE CO's Holding History (CIK: 0000857508)

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

Q4 2019

Shares 9,000 Value ($000) $571 Avg Close $40.69 Range $34.40 - $46.90

Q3 2019

Shares 13,556 Value ($000) $808 Avg Close $41.27 Range $34.56 - $47.73

Q2 2019

Shares 13,556 Value ($000) $645 Avg Close $32.78 Range $25.73 - $40.13

Q1 2019

Shares 13,556 Value ($000) $652 Avg Close $32.38 Range $25.03 - $38.16

Q4 2018

Shares 13,556 Value ($000) $501 Avg Close $33.07 Range $23.85 - $41.99

Q3 2018

Shares 13,556 Value ($000) $794 Avg Close $46.86 Range $37.47 - $56.00

Q2 2018

Shares 13,556 Value ($000) $1,049 Avg Close $58.47 Range $52.75 - $64.87

Q1 2018

Shares 13,556 Value ($000) $1,251 Avg Close $61.52 Range $53.81 - $73.88

Q4 2017

Shares 13,556 Value ($000) $1,078 Avg Close $58.49 Range $52.57 - $64.05

Q3 2017

Shares 13,556 Value ($000) $1,171 Avg Close $59.93 Range $53.45 - $65.37

Q2 2017

Shares 18,118 Value ($000) $1,605 Avg Close $59.68 Range $54.65 - $64.49

Q1 2017

Shares 18,118 Value ($000) $1,495 Avg Close $51.29 Range $46.27 - $57.21

Q4 2016

Shares 18,118 Value ($000) $1,231 Avg Close $40.87 Range $34.90 - $48.23

Q3 2016

Shares 18,118 Value ($000) $1,059 Avg Close $33.13 Range $28.62 - $40.10

Q2 2016

Shares 18,118 Value ($000) $856 Avg Close $28.61 Range $22.97 - $33.66

Q1 2016

Shares 12,607 Value ($000) $596 Avg Close $30.76 Range $25.11 - $39.62

Q4 2015

Shares 12,607 Value ($000) $757 Avg Close $43.55 Range $37.34 - $55.67

Q3 2015

Shares 12,607 Value ($000) $1,002 Avg Close $50.91 Range $43.42 - $56.60

Q2 2015

Shares 24,211 Value ($000) $1,899 Avg Close $60.27 Range $50.11 - $64.90

Q1 2015

Shares 24,211 Value ($000) $2,203 Avg Close $65.44 Range $57.41 - $72.02

Q4 2014

Shares 24,211 Value ($000) $2,680 Avg Close $62.96 Range $52.21 - $72.28

Q3 2014

Shares 24,211 Value ($000) $2,356 Avg Close $62.41 Range $58.43 - $64.97

Q2 2014

Shares 24,211 Value ($000) $2,235 Avg Close $55.43 Range $50.48 - $59.36

Q1 2014

Shares 24,211 Value ($000) $2,223 Avg Close $53.80 Range $50.34 - $57.78

Q4 2013

Shares 24,211 Value ($000) $2,031 Avg Close $45.88 Range $38.72 - $52.56

Q3 2013

Shares 24,211 Value ($000) $1,535 Avg Close $40.38 Range $36.69 - $43.65

Q2 2013

Shares 24,211 Value ($000) $1,503 Avg Close $35.69 Range $30.03 - $40.17

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	9,000	$571	$40.69	$34.40 - $46.90
Q3 2019	13,556	$808	$41.27	$34.56 - $47.73
Q2 2019	13,556	$645	$32.78	$25.73 - $40.13
Q1 2019	13,556	$652	$32.38	$25.03 - $38.16
Q4 2018	13,556	$501	$33.07	$23.85 - $41.99
Q3 2018	13,556	$794	$46.86	$37.47 - $56.00
Q2 2018	13,556	$1,049	$58.47	$52.75 - $64.87
Q1 2018	13,556	$1,251	$61.52	$53.81 - $73.88
Q4 2017	13,556	$1,078	$58.49	$52.57 - $64.05
Q3 2017	13,556	$1,171	$59.93	$53.45 - $65.37
Q2 2017	18,118	$1,605	$59.68	$54.65 - $64.49
Q1 2017	18,118	$1,495	$51.29	$46.27 - $57.21
Q4 2016	18,118	$1,231	$40.87	$34.90 - $48.23
Q3 2016	18,118	$1,059	$33.13	$28.62 - $40.10
Q2 2016	18,118	$856	$28.61	$22.97 - $33.66
Q1 2016	12,607	$596	$30.76	$25.11 - $39.62
Q4 2015	12,607	$757	$43.55	$37.34 - $55.67
Q3 2015	12,607	$1,002	$50.91	$43.42 - $56.60
Q2 2015	24,211	$1,899	$60.27	$50.11 - $64.90
Q1 2015	24,211	$2,203	$65.44	$57.41 - $72.02
Q4 2014	24,211	$2,680	$62.96	$52.21 - $72.28
Q3 2014	24,211	$2,356	$62.41	$58.43 - $64.97
Q2 2014	24,211	$2,235	$55.43	$50.48 - $59.36
Q1 2014	24,211	$2,223	$53.80	$50.34 - $57.78
Q4 2013	24,211	$2,031	$45.88	$38.72 - $52.56
Q3 2013	24,211	$1,535	$40.38	$36.69 - $43.65
Q2 2013	24,211	$1,503	$35.69	$30.03 - $40.17