COMPASS MINERALS INTL INC

Ticker: CMP CUSIP: 20451N101 Class: Common Stock

Boston Partners's Holding History (CIK: 0001386060)

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

Q4 2016

Shares 36,375 Value ($000) $2,850 Avg Close $57.67 Range $53.18 - $62.97

Q3 2016

Shares 36,375 Value ($000) $2,681 Avg Close $54.44 Range $50.92 - $57.62

Q2 2016

Shares 53,118 Value ($000) $3,941 Avg Close $56.40 Range $49.77 - $60.87

Q1 2016

Shares 47,699 Value ($000) $3,380 Avg Close $52.78 Range $48.71 - $56.62

Q4 2015

Shares 36,339 Value ($000) $2,735 Avg Close $59.61 Range $52.17 - $63.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	36,375	$2,850	$57.67	$53.18 - $62.97
Q3 2016	36,375	$2,681	$54.44	$50.92 - $57.62
Q2 2016	53,118	$3,941	$56.40	$49.77 - $60.87
Q1 2016	47,699	$3,380	$52.78	$48.71 - $56.62
Q4 2015	36,339	$2,735	$59.61	$52.17 - $63.00