3M CO

Ticker: MMM CUSIP: 88579Y101 Class: COM

Leith Wheeler Investment Counsel Ltd.'s Holding History (CIK: 0001353651)

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

Q4 2017

Shares 1,079 Value ($000) $254 Avg Close $144.97 Range $132.04 - $154.32

Q3 2016

Shares 1,511 Value ($000) $349 Avg Close $109.19 Range $105.77 - $111.43

Q2 2016

Shares 1,511 Value ($000) $344 Avg Close $102.46 Range $99.47 - $106.77

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	1,079	$254	$144.97	$132.04 - $154.32
Q3 2016	1,511	$349	$109.19	$105.77 - $111.43
Q2 2016	1,511	$344	$102.46	$99.47 - $106.77