NORTHERN TR CORP

Ticker: NTRS CUSIP: 665859104 Class: COM

Municipal Employees' Retirement System of Michigan's Holding History (CIK: 0001588873)

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

Q1 2020

Shares 15,100 Value ($000) $1,140 Avg Close $76.24 Range $50.86 - $91.21

Q4 2019

Shares 15,100 Value ($000) $1,604 Avg Close $84.53 Range $70.73 - $91.70

Q3 2019

Shares 3,060 Value ($000) $286 Avg Close $75.31 Range $68.73 - $82.36

Q2 2019

Shares 3,000 Value ($000) $270 Avg Close $75.01 Range $68.81 - $81.17

Q1 2019

Shares 15,820 Value ($000) $1,430 Avg Close $72.96 Range $66.04 - $78.80

Q4 2018

Shares 18,790 Value ($000) $1,571 Avg Close $75.32 Range $61.37 - $86.09

Q2 2018

Shares 12,390 Value ($000) $1,275 Avg Close $84.33 Range $79.47 - $87.26

Q1 2018

Shares 5,550 Value ($000) $572 Avg Close $82.97 Range $74.79 - $88.15

Q4 2017

Shares 5,550 Value ($000) $554 Avg Close $75.28 Range $71.84 - $80.39

Q3 2017

Shares 5,550 Value ($000) $510 Avg Close $71.05 Range $67.61 - $77.97

Q2 2017

Shares 6,870 Value ($000) $668 Avg Close $70.42 Range $66.40 - $77.52

Q1 2017

Shares 6,870 Value ($000) $595 Avg Close $67.79 Range $63.77 - $70.95

Q4 2016

Shares 6,780 Value ($000) $604 Avg Close $61.69 Range $52.36 - $70.81

Q3 2016

Shares 19,710 Value ($000) $1,340 Avg Close $52.45 Range $47.67 - $55.52

Q2 2016

Shares 19,700 Value ($000) $1,312 Avg Close $53.49 Range $47.26 - $57.41

Q1 2016

Shares 6,610 Value ($000) $433 Avg Close $47.88 Range $41.46 - $54.24

Q4 2015

Shares 6,600 Value ($000) $478 Avg Close $54.64 Range $49.15 - $57.77

Q3 2015

Shares 6,540 Value ($000) $448 Avg Close $55.52 Range $49.19 - $59.82

Q2 2015

Shares 11,450 Value ($000) $875 Avg Close $56.07 Range $51.74 - $59.54

Q1 2015

Shares 6,600 Value ($000) $462 Avg Close $51.14 Range $45.68 - $54.62

Q4 2014

Shares 7,700 Value ($000) $522 Avg Close $49.58 Range $45.22 - $51.59

Q3 2014

Shares 7,700 Value ($000) $526 Avg Close $49.84 Range $46.73 - $52.70

Q2 2014

Shares 7,600 Value ($000) $491 Avg Close $45.46 Range $42.93 - $48.59

Q1 2014

Shares 7,600 Value ($000) $498 Avg Close $45.55 Range $42.73 - $49.47

Q4 2013

Shares 7,300 Value ($000) $452 Avg Close $41.82 Range $38.19 - $45.43

Q3 2013

Shares 7,300 Value ($000) $397 Avg Close $41.67 Range $39.30 - $44.95

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2020	15,100	$1,140	$76.24	$50.86 - $91.21
Q4 2019	15,100	$1,604	$84.53	$70.73 - $91.70
Q3 2019	3,060	$286	$75.31	$68.73 - $82.36
Q2 2019	3,000	$270	$75.01	$68.81 - $81.17
Q1 2019	15,820	$1,430	$72.96	$66.04 - $78.80
Q4 2018	18,790	$1,571	$75.32	$61.37 - $86.09
Q2 2018	12,390	$1,275	$84.33	$79.47 - $87.26
Q1 2018	5,550	$572	$82.97	$74.79 - $88.15
Q4 2017	5,550	$554	$75.28	$71.84 - $80.39
Q3 2017	5,550	$510	$71.05	$67.61 - $77.97
Q2 2017	6,870	$668	$70.42	$66.40 - $77.52
Q1 2017	6,870	$595	$67.79	$63.77 - $70.95
Q4 2016	6,780	$604	$61.69	$52.36 - $70.81
Q3 2016	19,710	$1,340	$52.45	$47.67 - $55.52
Q2 2016	19,700	$1,312	$53.49	$47.26 - $57.41
Q1 2016	6,610	$433	$47.88	$41.46 - $54.24
Q4 2015	6,600	$478	$54.64	$49.15 - $57.77
Q3 2015	6,540	$448	$55.52	$49.19 - $59.82
Q2 2015	11,450	$875	$56.07	$51.74 - $59.54
Q1 2015	6,600	$462	$51.14	$45.68 - $54.62
Q4 2014	7,700	$522	$49.58	$45.22 - $51.59
Q3 2014	7,700	$526	$49.84	$46.73 - $52.70
Q2 2014	7,600	$491	$45.46	$42.93 - $48.59
Q1 2014	7,600	$498	$45.55	$42.73 - $49.47
Q4 2013	7,300	$452	$41.82	$38.19 - $45.43
Q3 2013	7,300	$397	$41.67	$39.30 - $44.95