HUBBELL INC

Ticker: HUBB CUSIP: 443510607 Class: Common Stock

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

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

Q1 2017

Shares 5,540 Value ($000) $665 Avg Close $99.81 Range $95.40 - $104.39

Q4 2016

Shares 4,985 Value ($000) $582 Avg Close $90.77 Range $83.33 - $98.69

Q3 2016

Shares 5,476 Value ($000) $590 Avg Close $87.18 Range $83.80 - $90.07

Q2 2016

Shares 6,805 Value ($000) $718 Avg Close $85.87 Range $79.73 - $90.56

Q1 2016

Shares 5,776 Value ($000) $612 Avg Close $77.49 Range $67.27 - $86.84

Q4 2015

Shares 6,644 Value ($000) $671 Avg Close $76.44 Range $67.39 - $84.50

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	5,540	$665	$99.81	$95.40 - $104.39
Q4 2016	4,985	$582	$90.77	$83.33 - $98.69
Q3 2016	5,476	$590	$87.18	$83.80 - $90.07
Q2 2016	6,805	$718	$85.87	$79.73 - $90.56
Q1 2016	5,776	$612	$77.49	$67.27 - $86.84
Q4 2015	6,644	$671	$76.44	$67.39 - $84.50