NORTHERN TR CORP

Ticker: NTRS CUSIP: 665859104 Class: COM

PHYSICIANS FINANCIAL SERVICES, INC.'s Holding History (CIK: 0001665518)

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

Q4 2016

Shares 1,000 Value ($000) $68 Avg Close $61.69 Range $52.36 - $70.81

Q3 2016

Shares 1,000 Value ($000) $68 Avg Close $52.45 Range $47.67 - $55.52

Q2 2016

Shares 1,000 Value ($000) $66 Avg Close $53.49 Range $47.26 - $57.41

Q1 2016

Shares 1,000 Value ($000) $65 Avg Close $47.88 Range $41.46 - $54.24

Q4 2015

Shares 1,000 Value ($000) $72 Avg Close $54.64 Range $49.15 - $57.77

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	1,000	$68	$61.69	$52.36 - $70.81
Q3 2016	1,000	$68	$52.45	$47.67 - $55.52
Q2 2016	1,000	$66	$53.49	$47.26 - $57.41
Q1 2016	1,000	$65	$47.88	$41.46 - $54.24
Q4 2015	1,000	$72	$54.64	$49.15 - $57.77