WD-40 CO

Ticker: WDFC CUSIP: 929236107 Class: EQTY

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q1 2017

Shares 535,862 Value ($000) $58,382 Avg Close $94.70 Range $87.23 - $103.92

Q4 2016

Shares 725,730 Value ($000) $84,838 Avg Close $95.11 Range $87.84 - $101.71

Q3 2016

Shares 713,234 Value ($000) $80,189 Avg Close $100.86 Range $95.26 - $107.55

Q2 2016

Shares 703,044 Value ($000) $82,573 Avg Close $93.26 Range $85.10 - $101.68

Q1 2016

Shares 898,688 Value ($000) $97,067 Avg Close $88.52 Range $80.20 - $94.25

Q4 2015

Shares 878,406 Value ($000) $86,655 Avg Close $82.77 Range $74.64 - $89.58

Q3 2015

Shares 746,705 Value ($000) $66,509 Avg Close $74.03 Range $68.72 - $78.00

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	535,862	$58,382	$94.70	$87.23 - $103.92
Q4 2016	725,730	$84,838	$95.11	$87.84 - $101.71
Q3 2016	713,234	$80,189	$100.86	$95.26 - $107.55
Q2 2016	703,044	$82,573	$93.26	$85.10 - $101.68
Q1 2016	898,688	$97,067	$88.52	$80.20 - $94.25
Q4 2015	878,406	$86,655	$82.77	$74.64 - $89.58
Q3 2015	746,705	$66,509	$74.03	$68.72 - $78.00