NORTHERN TR CORP

Ticker: NTRS CUSIP: 665859104 Class: COM

BOSTON FAMILY OFFICE LLC's Holding History (CIK: 0001039807)

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

Q4 2025

Shares 3,497 Value ($000) $0 Avg Close $130.74 Range $120.39 - $141.25

Q3 2025

Shares 3,497 Value ($000) $0 Avg Close $127.35 Range $117.54 - $134.67

Q2 2025

Shares 3,497 Value ($000) $0 Avg Close $100.50 Range $80.06 - $125.55

Q1 2025

Shares 3,497 Value ($000) $0 Avg Close $103.45 Range $93.23 - $111.60

Q4 2024

Shares 3,497 Value ($000) $0 Avg Close $99.01 Range $84.76 - $108.13

Q3 2024

Shares 3,497 Value ($000) $0 Avg Close $84.00 Range $77.46 - $89.72

Q2 2024

Shares 3,497 Value ($000) $0 Avg Close $79.92 Range $75.34 - $84.71

Q1 2024

Shares 4,097 Value ($000) $0 Avg Close $77.38 Range $72.15 - $84.77

Q4 2023

Shares 4,947 Value ($000) $0 Avg Close $69.13 Range $58.21 - $81.80

Q3 2023

Shares 5,922 Value ($000) $0 Avg Close $69.90 Range $63.24 - $76.10

Q2 2023

Shares 6,622 Value ($000) $0 Avg Close $70.33 Range $63.56 - $82.80

Q1 2023

Shares 6,622 Value ($000) $1 Avg Close $84.16 Range $73.69 - $90.89

Q4 2022

Shares 6,622 Value ($000) $1 Avg Close $78.90 Range $68.45 - $85.44

Q3 2022

Shares 6,622 Value ($000) $566 Avg Close $86.27 Range $75.57 - $93.27

Q2 2022

Shares 6,622 Value ($000) $639 Avg Close $93.79 Range $79.99 - $104.77

Q1 2022

Shares 6,622 Value ($000) $771 Avg Close $104.54 Range $90.15 - $118.99

Q4 2021

Shares 6,729 Value ($000) $805 Avg Close $105.01 Range $93.28 - $110.92

Q3 2021

Shares 6,729 Value ($000) $725 Avg Close $98.91 Range $91.25 - $105.90

Q2 2021

Shares 6,729 Value ($000) $778 Avg Close $99.29 Range $88.58 - $106.46

Q1 2021

Shares 10,317 Value ($000) $1,069 Avg Close $84.43 Range $75.75 - $93.36

Q4 2020

Shares 10,845 Value ($000) $1,010 Avg Close $75.32 Range $64.54 - $84.00

Q3 2020

Shares 12,395 Value ($000) $966 Avg Close $67.99 Range $61.38 - $73.22

Q2 2020

Shares 12,570 Value ($000) $997 Avg Close $66.60 Range $56.52 - $77.90

Q1 2020

Shares 15,985 Value ($000) $1,206 Avg Close $76.24 Range $50.86 - $91.21

Q4 2019

Shares 15,585 Value ($000) $1,656 Avg Close $84.53 Range $70.73 - $91.70

Q3 2019

Shares 17,376 Value ($000) $1,622 Avg Close $75.31 Range $68.73 - $82.36

Q2 2019

Shares 17,901 Value ($000) $1,611 Avg Close $75.01 Range $68.81 - $81.17

Q1 2019

Shares 17,851 Value ($000) $1,614 Avg Close $72.96 Range $66.04 - $78.80

Q4 2018

Shares 17,701 Value ($000) $1,480 Avg Close $75.32 Range $61.37 - $86.09

Q3 2018

Shares 18,019 Value ($000) $1,840 Avg Close $85.59 Range $81.23 - $92.33

Q2 2018

Shares 18,701 Value ($000) $1,924 Avg Close $84.33 Range $79.47 - $87.26

Q1 2018

Shares 18,575 Value ($000) $1,916 Avg Close $82.97 Range $74.79 - $88.15

Q4 2017

Shares 20,525 Value ($000) $2,050 Avg Close $75.28 Range $71.84 - $80.39

Q3 2017

Shares 22,584 Value ($000) $2,076 Avg Close $71.05 Range $67.61 - $77.97

Q2 2017

Shares 21,359 Value ($000) $2,076 Avg Close $70.42 Range $66.40 - $77.52

Q1 2017

Shares 20,434 Value ($000) $1,769 Avg Close $67.79 Range $63.77 - $70.95

Q4 2016

Shares 19,659 Value ($000) $1,751 Avg Close $61.69 Range $52.36 - $70.81

Q3 2016

Shares 19,359 Value ($000) $1,316 Avg Close $52.45 Range $47.67 - $55.52

Q2 2016

Shares 19,534 Value ($000) $1,294 Avg Close $53.49 Range $47.26 - $57.41

Q1 2016

Shares 21,784 Value ($000) $1,420 Avg Close $47.88 Range $41.46 - $54.24

Q4 2015

Shares 21,275 Value ($000) $1,534 Avg Close $54.64 Range $49.15 - $57.77

Q3 2015

Shares 21,025 Value ($000) $1,433 Avg Close $55.52 Range $49.19 - $59.82

Q2 2015

Shares 20,975 Value ($000) $1,604 Avg Close $56.07 Range $51.74 - $59.54

Q1 2015

Shares 20,975 Value ($000) $1,461 Avg Close $51.14 Range $45.68 - $54.62

Q4 2014

Shares 20,900 Value ($000) $1,409 Avg Close $49.58 Range $45.22 - $51.59

Q3 2014

Shares 18,850 Value ($000) $1,282 Avg Close $49.84 Range $46.73 - $52.70

Q2 2014

Shares 18,700 Value ($000) $1,201 Avg Close $45.46 Range $42.93 - $48.59

Q1 2014

Shares 19,625 Value ($000) $1,287 Avg Close $45.55 Range $42.73 - $49.47

Q4 2013

Shares 20,900 Value ($000) $1,294 Avg Close $41.82 Range $38.19 - $45.43

Q3 2013

Shares 20,850 Value ($000) $1,134 Avg Close $41.67 Range $39.30 - $44.95

Q2 2013

Shares 20,825 Value ($000) $1,206 Avg Close $40.35 Range $37.41 - $42.83

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3,497	$0	$130.74	$120.39 - $141.25
Q3 2025	3,497	$0	$127.35	$117.54 - $134.67
Q2 2025	3,497	$0	$100.50	$80.06 - $125.55
Q1 2025	3,497	$0	$103.45	$93.23 - $111.60
Q4 2024	3,497	$0	$99.01	$84.76 - $108.13
Q3 2024	3,497	$0	$84.00	$77.46 - $89.72
Q2 2024	3,497	$0	$79.92	$75.34 - $84.71
Q1 2024	4,097	$0	$77.38	$72.15 - $84.77
Q4 2023	4,947	$0	$69.13	$58.21 - $81.80
Q3 2023	5,922	$0	$69.90	$63.24 - $76.10
Q2 2023	6,622	$0	$70.33	$63.56 - $82.80
Q1 2023	6,622	$1	$84.16	$73.69 - $90.89
Q4 2022	6,622	$1	$78.90	$68.45 - $85.44
Q3 2022	6,622	$566	$86.27	$75.57 - $93.27
Q2 2022	6,622	$639	$93.79	$79.99 - $104.77
Q1 2022	6,622	$771	$104.54	$90.15 - $118.99
Q4 2021	6,729	$805	$105.01	$93.28 - $110.92
Q3 2021	6,729	$725	$98.91	$91.25 - $105.90
Q2 2021	6,729	$778	$99.29	$88.58 - $106.46
Q1 2021	10,317	$1,069	$84.43	$75.75 - $93.36
Q4 2020	10,845	$1,010	$75.32	$64.54 - $84.00
Q3 2020	12,395	$966	$67.99	$61.38 - $73.22
Q2 2020	12,570	$997	$66.60	$56.52 - $77.90
Q1 2020	15,985	$1,206	$76.24	$50.86 - $91.21
Q4 2019	15,585	$1,656	$84.53	$70.73 - $91.70
Q3 2019	17,376	$1,622	$75.31	$68.73 - $82.36
Q2 2019	17,901	$1,611	$75.01	$68.81 - $81.17
Q1 2019	17,851	$1,614	$72.96	$66.04 - $78.80
Q4 2018	17,701	$1,480	$75.32	$61.37 - $86.09
Q3 2018	18,019	$1,840	$85.59	$81.23 - $92.33
Q2 2018	18,701	$1,924	$84.33	$79.47 - $87.26
Q1 2018	18,575	$1,916	$82.97	$74.79 - $88.15
Q4 2017	20,525	$2,050	$75.28	$71.84 - $80.39
Q3 2017	22,584	$2,076	$71.05	$67.61 - $77.97
Q2 2017	21,359	$2,076	$70.42	$66.40 - $77.52
Q1 2017	20,434	$1,769	$67.79	$63.77 - $70.95
Q4 2016	19,659	$1,751	$61.69	$52.36 - $70.81
Q3 2016	19,359	$1,316	$52.45	$47.67 - $55.52
Q2 2016	19,534	$1,294	$53.49	$47.26 - $57.41
Q1 2016	21,784	$1,420	$47.88	$41.46 - $54.24
Q4 2015	21,275	$1,534	$54.64	$49.15 - $57.77
Q3 2015	21,025	$1,433	$55.52	$49.19 - $59.82
Q2 2015	20,975	$1,604	$56.07	$51.74 - $59.54
Q1 2015	20,975	$1,461	$51.14	$45.68 - $54.62
Q4 2014	20,900	$1,409	$49.58	$45.22 - $51.59
Q3 2014	18,850	$1,282	$49.84	$46.73 - $52.70
Q2 2014	18,700	$1,201	$45.46	$42.93 - $48.59
Q1 2014	19,625	$1,287	$45.55	$42.73 - $49.47
Q4 2013	20,900	$1,294	$41.82	$38.19 - $45.43
Q3 2013	20,850	$1,134	$41.67	$39.30 - $44.95
Q2 2013	20,825	$1,206	$40.35	$37.41 - $42.83