NORTHERN TR CORP

Ticker: NTRS CUSIP: 665859104 Class: COM

Callahan Advisors, LLC's Holding History (CIK: 0001395055)

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

Q4 2025

Shares 26,227 Value ($000) $3,582 Avg Close $130.74 Range $120.39 - $141.25

Q3 2025

Shares 26,553 Value ($000) $3,574 Avg Close $127.35 Range $117.54 - $134.67

Q2 2025

Shares 25,065 Value ($000) $3,178 Avg Close $100.50 Range $80.06 - $125.55

Q1 2025

Shares 19,492 Value ($000) $1,923 Avg Close $103.45 Range $93.23 - $111.60

Q4 2024

Shares 18,457 Value ($000) $1,892 Avg Close $99.01 Range $84.76 - $108.13

Q3 2024

Shares 18,452 Value ($000) $1,661 Avg Close $84.00 Range $77.46 - $89.72

Q2 2024

Shares 20,078 Value ($000) $1,686 Avg Close $79.92 Range $75.34 - $84.71

Q1 2024

Shares 16,751 Value ($000) $1,489 Avg Close $77.38 Range $72.15 - $84.77

Q4 2023

Shares 13,497 Value ($000) $1,139 Avg Close $69.13 Range $58.21 - $81.80

Q3 2023

Shares 14,824 Value ($000) $1,030 Avg Close $69.90 Range $63.24 - $76.10

Q2 2023

Shares 10,936 Value ($000) $811 Avg Close $70.33 Range $63.56 - $82.80

Q1 2023

Shares 7,364 Value ($000) $649 Avg Close $84.16 Range $73.69 - $90.89

Q4 2022

Shares 10,493 Value ($000) $929 Avg Close $78.90 Range $68.45 - $85.44

Q3 2022

Shares 16,549 Value ($000) $1,416 Avg Close $86.27 Range $75.57 - $93.27

Q2 2022

Shares 23,135 Value ($000) $2,232 Avg Close $93.79 Range $79.99 - $104.77

Q1 2022

Shares 25,211 Value ($000) $2,936 Avg Close $104.54 Range $90.15 - $118.99

Q4 2021

Shares 25,415 Value ($000) $3,040 Avg Close $105.01 Range $93.28 - $110.92

Q3 2021

Shares 24,201 Value ($000) $2,609 Avg Close $98.91 Range $91.25 - $105.90

Q2 2021

Shares 19,425 Value ($000) $2,246 Avg Close $99.29 Range $88.58 - $106.46

Q1 2021

Shares 11,950 Value ($000) $1,256 Avg Close $84.43 Range $75.75 - $93.36

Q4 2020

Shares 12,265 Value ($000) $1,142 Avg Close $75.32 Range $64.54 - $84.00

Q3 2020

Shares 13,277 Value ($000) $1,035 Avg Close $67.99 Range $61.38 - $73.22

Q2 2020

Shares 23,550 Value ($000) $1,868 Avg Close $66.60 Range $56.52 - $77.90

Q1 2020

Shares 73,424 Value ($000) $5,541 Avg Close $76.24 Range $50.86 - $91.21

Q4 2019

Shares 75,483 Value ($000) $8,019 Avg Close $84.53 Range $70.73 - $91.70

Q3 2019

Shares 75,917 Value ($000) $7,085 Avg Close $75.31 Range $68.73 - $82.36

Q2 2019

Shares 74,791 Value ($000) $6,731 Avg Close $75.01 Range $68.81 - $81.17

Q1 2019

Shares 73,522 Value ($000) $6,647 Avg Close $72.96 Range $66.04 - $78.80

Q4 2018

Shares 69,685 Value ($000) $5,825 Avg Close $75.32 Range $61.37 - $86.09

Q3 2018

Shares 68,874 Value ($000) $7,034 Avg Close $85.59 Range $81.23 - $92.33

Q2 2018

Shares 67,350 Value ($000) $6,930 Avg Close $84.33 Range $79.47 - $87.26

Q1 2018

Shares 63,527 Value ($000) $6,552 Avg Close $82.97 Range $74.79 - $88.15

Q4 2017

Shares 61,998 Value ($000) $6,193 Avg Close $75.28 Range $71.84 - $80.39

Q3 2017

Shares 62,976 Value ($000) $5,789 Avg Close $71.05 Range $67.61 - $77.97

Q2 2017

Shares 62,199 Value ($000) $6,046 Avg Close $70.42 Range $66.40 - $77.52

Q1 2017

Shares 58,128 Value ($000) $5,033 Avg Close $67.79 Range $63.77 - $70.95

Q4 2016

Shares 53,152 Value ($000) $4,733 Avg Close $61.69 Range $52.36 - $70.81

Q3 2016

Shares 40,930 Value ($000) $2,783 Avg Close $52.45 Range $47.67 - $55.52

Q2 2016

Shares 34,404 Value ($000) $2,280 Avg Close $53.49 Range $47.26 - $57.41

Q1 2016

Shares 30,197 Value ($000) $1,968 Avg Close $47.88 Range $41.46 - $54.24

Q4 2015

Shares 24,612 Value ($000) $1,774 Avg Close $54.64 Range $49.15 - $57.77

Q3 2015

Shares 20,717 Value ($000) $1,412 Avg Close $55.52 Range $49.19 - $59.82

Q2 2015

Shares 14,518 Value ($000) $1,110 Avg Close $56.07 Range $51.74 - $59.54

Q1 2015

Shares 10,125 Value ($000) $705 Avg Close $51.14 Range $45.68 - $54.62

Q4 2014

Shares 6,827 Value ($000) $460 Avg Close $49.58 Range $45.22 - $51.59

Q3 2014

Shares 5,750 Value ($000) $391 Avg Close $49.84 Range $46.73 - $52.70

Q2 2014

Shares 5,747 Value ($000) $369 Avg Close $45.46 Range $42.93 - $48.59

Q1 2014

Shares 6,045 Value ($000) $396 Avg Close $45.55 Range $42.73 - $49.47

Q4 2013

Shares 6,042 Value ($000) $374 Avg Close $41.82 Range $38.19 - $45.43

Q3 2013

Shares 6,039 Value ($000) $328 Avg Close $41.67 Range $39.30 - $44.95

Q2 2013

Shares 6,031 Value ($000) $349 Avg Close $40.35 Range $37.41 - $42.83

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	26,227	$3,582	$130.74	$120.39 - $141.25
Q3 2025	26,553	$3,574	$127.35	$117.54 - $134.67
Q2 2025	25,065	$3,178	$100.50	$80.06 - $125.55
Q1 2025	19,492	$1,923	$103.45	$93.23 - $111.60
Q4 2024	18,457	$1,892	$99.01	$84.76 - $108.13
Q3 2024	18,452	$1,661	$84.00	$77.46 - $89.72
Q2 2024	20,078	$1,686	$79.92	$75.34 - $84.71
Q1 2024	16,751	$1,489	$77.38	$72.15 - $84.77
Q4 2023	13,497	$1,139	$69.13	$58.21 - $81.80
Q3 2023	14,824	$1,030	$69.90	$63.24 - $76.10
Q2 2023	10,936	$811	$70.33	$63.56 - $82.80
Q1 2023	7,364	$649	$84.16	$73.69 - $90.89
Q4 2022	10,493	$929	$78.90	$68.45 - $85.44
Q3 2022	16,549	$1,416	$86.27	$75.57 - $93.27
Q2 2022	23,135	$2,232	$93.79	$79.99 - $104.77
Q1 2022	25,211	$2,936	$104.54	$90.15 - $118.99
Q4 2021	25,415	$3,040	$105.01	$93.28 - $110.92
Q3 2021	24,201	$2,609	$98.91	$91.25 - $105.90
Q2 2021	19,425	$2,246	$99.29	$88.58 - $106.46
Q1 2021	11,950	$1,256	$84.43	$75.75 - $93.36
Q4 2020	12,265	$1,142	$75.32	$64.54 - $84.00
Q3 2020	13,277	$1,035	$67.99	$61.38 - $73.22
Q2 2020	23,550	$1,868	$66.60	$56.52 - $77.90
Q1 2020	73,424	$5,541	$76.24	$50.86 - $91.21
Q4 2019	75,483	$8,019	$84.53	$70.73 - $91.70
Q3 2019	75,917	$7,085	$75.31	$68.73 - $82.36
Q2 2019	74,791	$6,731	$75.01	$68.81 - $81.17
Q1 2019	73,522	$6,647	$72.96	$66.04 - $78.80
Q4 2018	69,685	$5,825	$75.32	$61.37 - $86.09
Q3 2018	68,874	$7,034	$85.59	$81.23 - $92.33
Q2 2018	67,350	$6,930	$84.33	$79.47 - $87.26
Q1 2018	63,527	$6,552	$82.97	$74.79 - $88.15
Q4 2017	61,998	$6,193	$75.28	$71.84 - $80.39
Q3 2017	62,976	$5,789	$71.05	$67.61 - $77.97
Q2 2017	62,199	$6,046	$70.42	$66.40 - $77.52
Q1 2017	58,128	$5,033	$67.79	$63.77 - $70.95
Q4 2016	53,152	$4,733	$61.69	$52.36 - $70.81
Q3 2016	40,930	$2,783	$52.45	$47.67 - $55.52
Q2 2016	34,404	$2,280	$53.49	$47.26 - $57.41
Q1 2016	30,197	$1,968	$47.88	$41.46 - $54.24
Q4 2015	24,612	$1,774	$54.64	$49.15 - $57.77
Q3 2015	20,717	$1,412	$55.52	$49.19 - $59.82
Q2 2015	14,518	$1,110	$56.07	$51.74 - $59.54
Q1 2015	10,125	$705	$51.14	$45.68 - $54.62
Q4 2014	6,827	$460	$49.58	$45.22 - $51.59
Q3 2014	5,750	$391	$49.84	$46.73 - $52.70
Q2 2014	5,747	$369	$45.46	$42.93 - $48.59
Q1 2014	6,045	$396	$45.55	$42.73 - $49.47
Q4 2013	6,042	$374	$41.82	$38.19 - $45.43
Q3 2013	6,039	$328	$41.67	$39.30 - $44.95
Q2 2013	6,031	$349	$40.35	$37.41 - $42.83