MINERALS TECHNOLOGIES INC

Ticker: MTX CUSIP: 603158106 Class: Common Stock

BALDWIN BROTHERS LLC/MA's Holding History (CIK: 0001021258)

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

Q2 2015

Shares 3,548 Value ($000) $242 Avg Close $66.48 Range $62.78 - $71.08

Q1 2015

Shares 3,133 Value ($000) $229 Avg Close $64.85 Range $55.99 - $71.65

Q4 2014

Shares 36,308 Value ($000) $2,522 Avg Close $66.50 Range $54.66 - $74.50

Q3 2014

Shares 34,010 Value ($000) $2,099 Avg Close $59.56 Range $53.83 - $64.32

Q2 2014

Shares 33,293 Value ($000) $2,183 Avg Close $59.63 Range $56.50 - $63.93

Q1 2014

Shares 33,040 Value ($000) $2,133 Avg Close $53.91 Range $46.24 - $61.72

Q4 2013

Shares 41,424 Value ($000) $2,488 Avg Close $53.79 Range $46.69 - $57.91

Q3 2013

Shares 40,682 Value ($000) $2,008 Avg Close $43.84 Range $39.27 - $47.16

Q2 2013

Shares 41,435 Value ($000) $1,713 Avg Close $39.30 Range $36.34 - $41.48

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	3,548	$242	$66.48	$62.78 - $71.08
Q1 2015	3,133	$229	$64.85	$55.99 - $71.65
Q4 2014	36,308	$2,522	$66.50	$54.66 - $74.50
Q3 2014	34,010	$2,099	$59.56	$53.83 - $64.32
Q2 2014	33,293	$2,183	$59.63	$56.50 - $63.93
Q1 2014	33,040	$2,133	$53.91	$46.24 - $61.72
Q4 2013	41,424	$2,488	$53.79	$46.69 - $57.91
Q3 2013	40,682	$2,008	$43.84	$39.27 - $47.16
Q2 2013	41,435	$1,713	$39.30	$36.34 - $41.48