MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

OLD SECOND NATIONAL BANK OF AURORA's Holding History (CIK: 0000903783)

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

Q4 2025

Shares 6,522 Value ($000) $687 Avg Close $93.24 Range $81.31 - $107.59

Q3 2025

Shares 6,616 Value ($000) $555 Avg Close $81.01 Range $75.27 - $86.24

Q2 2025

Shares 6,622 Value ($000) $524 Avg Close $77.39 Range $71.26 - $87.25

Q1 2025

Shares 6,588 Value ($000) $591 Avg Close $90.12 Range $78.10 - $99.24

Q4 2024

Shares 6,516 Value ($000) $648 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 6,927 Value ($000) $787 Avg Close $112.96 Range $105.16 - $123.40

Q2 2024

Shares 6,927 Value ($000) $858 Avg Close $121.72 Range $114.80 - $127.87

Q1 2024

Shares 6,932 Value ($000) $915 Avg Close $115.77 Range $102.41 - $125.66

Q4 2023

Shares 7,704 Value ($000) $840 Avg Close $96.81 Range $92.34 - $102.48

Q3 2023

Shares 8,250 Value ($000) $849 Avg Close $99.84 Range $95.67 - $106.04

Q2 2023

Shares 8,498 Value ($000) $981 Avg Close $104.47 Range $97.02 - $109.95

Q1 2023

Shares 8,498 Value ($000) $904 Avg Close $98.68 Range $92.86 - $105.40

Q4 2022

Shares 8,602 Value ($000) $954 Avg Close $92.80 Range $77.99 - $103.03

Q3 2022

Shares 9,226 Value ($000) $795 Avg Close $80.41 Range $76.51 - $85.75

Q2 2022

Shares 9,226 Value ($000) $841 Avg Close $79.21 Range $72.83 - $86.09

Q1 2022

Shares 9,226 Value ($000) $757 Avg Close $69.85 Range $64.44 - $74.38

Q4 2021

Shares 9,376 Value ($000) $722 Avg Close $69.89 Range $62.63 - $80.06

Q3 2021

Shares 8,926 Value ($000) $670 Avg Close $66.14 Range $62.09 - $68.78

Q2 2021

Shares 9,106 Value ($000) $708 Avg Close $64.14 Range $59.83 - $67.79

Q1 2021

Shares 9,356 Value ($000) $722 Avg Close $63.06 Range $58.39 - $69.69

Q4 2020

Shares 9,376 Value ($000) $767 Avg Close $64.85 Range $59.73 - $68.80

Q3 2020

Shares 9,776 Value ($000) $811 Avg Close $65.93 Range $60.98 - $70.41

Q2 2020

Shares 9,356 Value ($000) $724 Avg Close $62.87 Range $58.07 - $67.36

Q1 2020

Shares 11,143 Value ($000) $857 Avg Close $65.09 Range $51.91 - $72.71

Q4 2019

Shares 11,143 Value ($000) $1,014 Avg Close $67.55 Range $62.89 - $73.10

Q3 2019

Shares 10,992 Value ($000) $926 Avg Close $65.47 Range $61.22 - $68.01

Q2 2019

Shares 10,931 Value ($000) $916 Avg Close $62.14 Range $55.86 - $67.34

Q1 2019

Shares 10,931 Value ($000) $909 Avg Close $60.29 Range $55.35 - $64.55

Q4 2018

Shares 10,931 Value ($000) $835 Avg Close $56.50 Range $50.42 - $61.17

Q3 2018

Shares 10,931 Value ($000) $776 Avg Close $50.65 Range $45.40 - $54.60

Q2 2018

Shares 10,761 Value ($000) $653 Avg Close $44.52 Range $39.72 - $47.34

Q1 2018

Shares 10,268 Value ($000) $559 Avg Close $42.25 Range $39.59 - $47.54

Q4 2017

Shares 40,498 Value ($000) $2,279 Avg Close $43.00 Range $39.63 - $47.96

Q3 2017

Shares 38,964 Value ($000) $2,495 Avg Close $46.68 Range $44.87 - $49.08

Q2 2017

Shares 39,101 Value ($000) $2,506 Avg Close $46.54 Range $45.06 - $48.72

Q1 2017

Shares 38,162 Value ($000) $2,424 Avg Close $46.06 Range $42.70 - $48.31

Q4 2016

Shares 38,668 Value ($000) $2,277 Avg Close $44.08 Range $41.83 - $46.98

Q3 2016

Shares 43,515 Value ($000) $2,716 Avg Close $43.73 Range $40.74 - $45.59

Q2 2016

Shares 39,162 Value ($000) $2,256 Avg Close $39.48 Range $37.06 - $41.09

Q1 2016

Shares 38,627 Value ($000) $2,044 Avg Close $36.03 Range $33.60 - $37.88

Q4 2015

Shares 37,976 Value ($000) $2,006 Avg Close $36.77 Range $33.58 - $38.73

Q3 2015

Shares 37,358 Value ($000) $1,845 Avg Close $38.40 Range $31.46 - $41.36

Q2 2015

Shares 36,998 Value ($000) $2,106 Avg Close $40.23 Range $38.42 - $42.17

Q1 2015

Shares 36,197 Value ($000) $2,081 Avg Close $40.30 Range $37.94 - $43.13

Q4 2014

Shares 33,911 Value ($000) $1,926 Avg Close $39.35 Range $35.32 - $41.85

Q3 2014

Shares 33,549 Value ($000) $1,989 Avg Close $39.37 Range $37.12 - $41.03

Q2 2014

Shares 33,776 Value ($000) $1,954 Avg Close $37.96 Range $36.06 - $39.67

Q1 2014

Shares 32,931 Value ($000) $1,870 Avg Close $35.76 Range $32.43 - $37.92

Q4 2013

Shares 27,011 Value ($000) $1,352 Avg Close $31.29 Range $29.09 - $32.94

Q3 2013

Shares 25,028 Value ($000) $1,192 Avg Close $30.97 Range $29.74 - $31.75

Q2 2013

Shares 20,627 Value ($000) $958 Avg Close $30.02 Range $28.02 - $32.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	6,522	$687	$93.24	$81.31 - $107.59
Q3 2025	6,616	$555	$81.01	$75.27 - $86.24
Q2 2025	6,622	$524	$77.39	$71.26 - $87.25
Q1 2025	6,588	$591	$90.12	$78.10 - $99.24
Q4 2024	6,516	$648	$98.70	$90.33 - $109.75
Q3 2024	6,927	$787	$112.96	$105.16 - $123.40
Q2 2024	6,927	$858	$121.72	$114.80 - $127.87
Q1 2024	6,932	$915	$115.77	$102.41 - $125.66
Q4 2023	7,704	$840	$96.81	$92.34 - $102.48
Q3 2023	8,250	$849	$99.84	$95.67 - $106.04
Q2 2023	8,498	$981	$104.47	$97.02 - $109.95
Q1 2023	8,498	$904	$98.68	$92.86 - $105.40
Q4 2022	8,602	$954	$92.80	$77.99 - $103.03
Q3 2022	9,226	$795	$80.41	$76.51 - $85.75
Q2 2022	9,226	$841	$79.21	$72.83 - $86.09
Q1 2022	9,226	$757	$69.85	$64.44 - $74.38
Q4 2021	9,376	$722	$69.89	$62.63 - $80.06
Q3 2021	8,926	$670	$66.14	$62.09 - $68.78
Q2 2021	9,106	$708	$64.14	$59.83 - $67.79
Q1 2021	9,356	$722	$63.06	$58.39 - $69.69
Q4 2020	9,376	$767	$64.85	$59.73 - $68.80
Q3 2020	9,776	$811	$65.93	$60.98 - $70.41
Q2 2020	9,356	$724	$62.87	$58.07 - $67.36
Q1 2020	11,143	$857	$65.09	$51.91 - $72.71
Q4 2019	11,143	$1,014	$67.55	$62.89 - $73.10
Q3 2019	10,992	$926	$65.47	$61.22 - $68.01
Q2 2019	10,931	$916	$62.14	$55.86 - $67.34
Q1 2019	10,931	$909	$60.29	$55.35 - $64.55
Q4 2018	10,931	$835	$56.50	$50.42 - $61.17
Q3 2018	10,931	$776	$50.65	$45.40 - $54.60
Q2 2018	10,761	$653	$44.52	$39.72 - $47.34
Q1 2018	10,268	$559	$42.25	$39.59 - $47.54
Q4 2017	40,498	$2,279	$43.00	$39.63 - $47.96
Q3 2017	38,964	$2,495	$46.68	$44.87 - $49.08
Q2 2017	39,101	$2,506	$46.54	$45.06 - $48.72
Q1 2017	38,162	$2,424	$46.06	$42.70 - $48.31
Q4 2016	38,668	$2,277	$44.08	$41.83 - $46.98
Q3 2016	43,515	$2,716	$43.73	$40.74 - $45.59
Q2 2016	39,162	$2,256	$39.48	$37.06 - $41.09
Q1 2016	38,627	$2,044	$36.03	$33.60 - $37.88
Q4 2015	37,976	$2,006	$36.77	$33.58 - $38.73
Q3 2015	37,358	$1,845	$38.40	$31.46 - $41.36
Q2 2015	36,998	$2,106	$40.23	$38.42 - $42.17
Q1 2015	36,197	$2,081	$40.30	$37.94 - $43.13
Q4 2014	33,911	$1,926	$39.35	$35.32 - $41.85
Q3 2014	33,549	$1,989	$39.37	$37.12 - $41.03
Q2 2014	33,776	$1,954	$37.96	$36.06 - $39.67
Q1 2014	32,931	$1,870	$35.76	$32.43 - $37.92
Q4 2013	27,011	$1,352	$31.29	$29.09 - $32.94
Q3 2013	25,028	$1,192	$30.97	$29.74 - $31.75
Q2 2013	20,627	$958	$30.02	$28.02 - $32.11