NORTHERN TR CORP

Ticker: NTRS CUSIP: 665859104 Class: COM

1ST SOURCE BANK's Holding History (CIK: 0000356264)

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

Q2 2014

Shares 4,243 Value ($000) $273 Avg Close $45.46 Range $42.93 - $48.59

Q1 2014

Shares 4,858 Value ($000) $319 Avg Close $45.55 Range $42.73 - $49.47

Q4 2013

Shares 10,106 Value ($000) $626 Avg Close $41.82 Range $38.19 - $45.43

Q3 2013

Shares 15,773 Value ($000) $857 Avg Close $41.67 Range $39.30 - $44.95

Q2 2013

Shares 16,173 Value ($000) $936 Avg Close $40.35 Range $37.41 - $42.83

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2014	4,243	$273	$45.46	$42.93 - $48.59
Q1 2014	4,858	$319	$45.55	$42.73 - $49.47
Q4 2013	10,106	$626	$41.82	$38.19 - $45.43
Q3 2013	15,773	$857	$41.67	$39.30 - $44.95
Q2 2013	16,173	$936	$40.35	$37.41 - $42.83