NORTHERN TR CORP

Ticker: NTRS CUSIP: 665859104 Class: COM

GATEWAY INVESTMENT ADVISERS LLC's Holding History (CIK: 0001114618)

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

Q4 2021

Shares 2,172 Value ($000) $260 Avg Close $105.01 Range $93.28 - $110.92

Q3 2019

Shares 2,233 Value ($000) $208 Avg Close $75.31 Range $68.73 - $82.36

Q2 2019

Shares 8,200 Value ($000) $738 Avg Close $75.01 Range $68.81 - $81.17

Q1 2019

Shares 8,585 Value ($000) $776 Avg Close $72.96 Range $66.04 - $78.80

Q4 2018

Shares 9,722 Value ($000) $813 Avg Close $75.32 Range $61.37 - $86.09

Q3 2018

Shares 9,114 Value ($000) $931 Avg Close $85.59 Range $81.23 - $92.33

Q2 2018

Shares 9,169 Value ($000) $943 Avg Close $84.33 Range $79.47 - $87.26

Q1 2018

Shares 10,645 Value ($000) $1,098 Avg Close $82.97 Range $74.79 - $88.15

Q4 2017

Shares 11,393 Value ($000) $1,138 Avg Close $75.28 Range $71.84 - $80.39

Q3 2017

Shares 12,687 Value ($000) $1,166 Avg Close $71.05 Range $67.61 - $77.97

Q2 2017

Shares 12,952 Value ($000) $1,259 Avg Close $70.42 Range $66.40 - $77.52

Q1 2017

Shares 13,426 Value ($000) $1,162 Avg Close $67.79 Range $63.77 - $70.95

Q4 2016

Shares 14,806 Value ($000) $1,318 Avg Close $61.69 Range $52.36 - $70.81

Q3 2016

Shares 15,332 Value ($000) $1,042 Avg Close $52.45 Range $47.67 - $55.52

Q2 2016

Shares 15,265 Value ($000) $1,011 Avg Close $53.49 Range $47.26 - $57.41

Q1 2016

Shares 15,334 Value ($000) $999 Avg Close $47.88 Range $41.46 - $54.24

Q4 2015

Shares 22,448 Value ($000) $1,618 Avg Close $54.64 Range $49.15 - $57.77

Q3 2015

Shares 22,756 Value ($000) $1,551 Avg Close $55.52 Range $49.19 - $59.82

Q2 2015

Shares 24,463 Value ($000) $1,870 Avg Close $56.07 Range $51.74 - $59.54

Q1 2015

Shares 25,266 Value ($000) $1,760 Avg Close $51.14 Range $45.68 - $54.62

Q4 2014

Shares 25,518 Value ($000) $1,720 Avg Close $49.58 Range $45.22 - $51.59

Q3 2014

Shares 26,209 Value ($000) $1,783 Avg Close $49.84 Range $46.73 - $52.70

Q2 2014

Shares 26,359 Value ($000) $1,693 Avg Close $45.46 Range $42.93 - $48.59

Q1 2014

Shares 23,429 Value ($000) $1,536 Avg Close $45.55 Range $42.73 - $49.47

Q4 2013

Shares 23,754 Value ($000) $1,470 Avg Close $41.82 Range $38.19 - $45.43

Q3 2013

Shares 23,654 Value ($000) $1,287 Avg Close $41.67 Range $39.30 - $44.95

Q2 2013

Shares 21,387 Value ($000) $1,238 Avg Close $40.35 Range $37.41 - $42.83

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	2,172	$260	$105.01	$93.28 - $110.92
Q3 2019	2,233	$208	$75.31	$68.73 - $82.36
Q2 2019	8,200	$738	$75.01	$68.81 - $81.17
Q1 2019	8,585	$776	$72.96	$66.04 - $78.80
Q4 2018	9,722	$813	$75.32	$61.37 - $86.09
Q3 2018	9,114	$931	$85.59	$81.23 - $92.33
Q2 2018	9,169	$943	$84.33	$79.47 - $87.26
Q1 2018	10,645	$1,098	$82.97	$74.79 - $88.15
Q4 2017	11,393	$1,138	$75.28	$71.84 - $80.39
Q3 2017	12,687	$1,166	$71.05	$67.61 - $77.97
Q2 2017	12,952	$1,259	$70.42	$66.40 - $77.52
Q1 2017	13,426	$1,162	$67.79	$63.77 - $70.95
Q4 2016	14,806	$1,318	$61.69	$52.36 - $70.81
Q3 2016	15,332	$1,042	$52.45	$47.67 - $55.52
Q2 2016	15,265	$1,011	$53.49	$47.26 - $57.41
Q1 2016	15,334	$999	$47.88	$41.46 - $54.24
Q4 2015	22,448	$1,618	$54.64	$49.15 - $57.77
Q3 2015	22,756	$1,551	$55.52	$49.19 - $59.82
Q2 2015	24,463	$1,870	$56.07	$51.74 - $59.54
Q1 2015	25,266	$1,760	$51.14	$45.68 - $54.62
Q4 2014	25,518	$1,720	$49.58	$45.22 - $51.59
Q3 2014	26,209	$1,783	$49.84	$46.73 - $52.70
Q2 2014	26,359	$1,693	$45.46	$42.93 - $48.59
Q1 2014	23,429	$1,536	$45.55	$42.73 - $49.47
Q4 2013	23,754	$1,470	$41.82	$38.19 - $45.43
Q3 2013	23,654	$1,287	$41.67	$39.30 - $44.95
Q2 2013	21,387	$1,238	$40.35	$37.41 - $42.83