BORGWARNER INC

Ticker: BWA CUSIP: 099724106 Class: EQTY

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q4 2016

Shares 98,270 Value ($000) $3,876 Avg Close $28.02 Range $25.27 - $32.19

Q1 2016

Shares 1,240,913 Value ($000) $47,651 Avg Close $25.48 Range $20.89 - $32.63

Q4 2015

Shares 479,752 Value ($000) $20,740 Avg Close $32.12 Range $29.84 - $36.60

Q3 2015

Shares 445,710 Value ($000) $18,537 Avg Close $35.46 Range $28.09 - $43.30

Q2 2015

Shares 457,339 Value ($000) $25,995 Avg Close $45.42 Range $42.52 - $46.94

Q1 2015

Shares 455,969 Value ($000) $27,577 Avg Close $43.25 Range $36.16 - $47.39

Q4 2014

Shares 486,756 Value ($000) $26,747 Avg Close $41.30 Range $37.44 - $43.95

Q2 2014

Shares 16,880 Value ($000) $1,100 Avg Close $46.49 Range $43.32 - $49.48

Q1 2014

Shares 17,780 Value ($000) $1,093 Avg Close $42.99 Range $37.73 - $46.80

Q4 2013

Shares 2,172,527 Value ($000) $121,466 Avg Close $38.93 Range $35.56 - $41.81

Q3 2013

Shares 957,435 Value ($000) $97,074 Avg Close $35.23 Range $31.00 - $38.15

Q2 2013

Shares 966,148 Value ($000) $83,234 Avg Close $29.44 Range $25.95 - $32.30

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	98,270	$3,876	$28.02	$25.27 - $32.19
Q1 2016	1,240,913	$47,651	$25.48	$20.89 - $32.63
Q4 2015	479,752	$20,740	$32.12	$29.84 - $36.60
Q3 2015	445,710	$18,537	$35.46	$28.09 - $43.30
Q2 2015	457,339	$25,995	$45.42	$42.52 - $46.94
Q1 2015	455,969	$27,577	$43.25	$36.16 - $47.39
Q4 2014	486,756	$26,747	$41.30	$37.44 - $43.95
Q2 2014	16,880	$1,100	$46.49	$43.32 - $49.48
Q1 2014	17,780	$1,093	$42.99	$37.73 - $46.80
Q4 2013	2,172,527	$121,466	$38.93	$35.56 - $41.81
Q3 2013	957,435	$97,074	$35.23	$31.00 - $38.15
Q2 2013	966,148	$83,234	$29.44	$25.95 - $32.30