MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

FAIRFIELD, BUSH & CO.'s Holding History (CIK: 0001116247)

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

Q4 2025

Shares 22,494 Value ($000) $2,368 Avg Close $93.24 Range $81.31 - $107.59

Q3 2025

Shares 23,057 Value ($000) $1,935 Avg Close $81.01 Range $75.27 - $86.24

Q2 2025

Shares 19,088 Value ($000) $1,511 Avg Close $77.39 Range $71.26 - $87.25

Q1 2025

Shares 17,100 Value ($000) $1,535 Avg Close $90.12 Range $78.10 - $99.24

Q4 2024

Shares 12,421 Value ($000) $1,236 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 11,186 Value ($000) $1,270 Avg Close $112.96 Range $105.16 - $123.40

Q2 2024

Shares 11,766 Value ($000) $1,457 Avg Close $121.72 Range $114.80 - $127.87

Q1 2024

Shares 11,982 Value ($000) $1,581 Avg Close $115.77 Range $102.41 - $125.66

Q4 2023

Shares 12,277 Value ($000) $1,338 Avg Close $96.81 Range $92.34 - $102.48

Q3 2023

Shares 13,147 Value ($000) $1,353 Avg Close $99.84 Range $95.67 - $106.04

Q2 2023

Shares 23,522 Value ($000) $2,714 Avg Close $104.47 Range $97.02 - $109.95

Q1 2023

Shares 23,395 Value ($000) $2,489 Avg Close $98.68 Range $92.86 - $105.40

Q4 2022

Shares 13,111 Value ($000) $1,455 Avg Close $92.80 Range $77.99 - $103.03

Q3 2022

Shares 13,073 Value ($000) $1,126 Avg Close $80.41 Range $76.51 - $85.75

Q2 2022

Shares 13,974 Value ($000) $1,274 Avg Close $79.21 Range $72.83 - $86.09

Q1 2022

Shares 16,658 Value ($000) $1,367 Avg Close $69.85 Range $64.44 - $74.38

Q4 2021

Shares 17,595 Value ($000) $1,348 Avg Close $69.89 Range $62.63 - $80.06

Q3 2021

Shares 33,719 Value ($000) $2,533 Avg Close $66.14 Range $62.09 - $68.78

Q2 2021

Shares 40,484 Value ($000) $3,148 Avg Close $64.14 Range $59.83 - $67.79

Q1 2021

Shares 41,924 Value ($000) $3,232 Avg Close $63.06 Range $58.39 - $69.69

Q4 2020

Shares 42,621 Value ($000) $3,486 Avg Close $64.85 Range $59.73 - $68.80

Q3 2020

Shares 42,413 Value ($000) $3,518 Avg Close $65.93 Range $60.98 - $70.41

Q2 2020

Shares 42,313 Value ($000) $3,272 Avg Close $62.87 Range $58.07 - $67.36

Q1 2020

Shares 21,318 Value ($000) $1,640 Avg Close $65.09 Range $51.91 - $72.71

Q4 2019

Shares 18,768 Value ($000) $1,707 Avg Close $67.55 Range $62.89 - $73.10

Q3 2019

Shares 17,018 Value ($000) $1,433 Avg Close $65.47 Range $61.22 - $68.01

Q2 2019

Shares 16,468 Value ($000) $1,381 Avg Close $62.14 Range $55.86 - $67.34

Q1 2019

Shares 14,268 Value ($000) $1,187 Avg Close $60.29 Range $55.35 - $64.55

Q4 2018

Shares 12,268 Value ($000) $937 Avg Close $56.50 Range $50.42 - $61.17

Q3 2018

Shares 12,579 Value ($000) $892 Avg Close $50.65 Range $45.40 - $54.60

Q2 2018

Shares 13,134 Value ($000) $797 Avg Close $44.52 Range $39.72 - $47.34

Q1 2018

Shares 13,489 Value ($000) $735 Avg Close $42.25 Range $39.59 - $47.54

Q4 2017

Shares 13,086 Value ($000) $736 Avg Close $43.00 Range $39.63 - $47.96

Q3 2017

Shares 12,775 Value ($000) $818 Avg Close $46.68 Range $44.87 - $49.08

Q2 2017

Shares 12,775 Value ($000) $819 Avg Close $46.54 Range $45.06 - $48.72

Q1 2017

Shares 13,125 Value ($000) $834 Avg Close $46.06 Range $42.70 - $48.31

Q4 2016

Shares 13,125 Value ($000) $773 Avg Close $44.08 Range $41.83 - $46.98

Q3 2016

Shares 13,125 Value ($000) $819 Avg Close $43.73 Range $40.74 - $45.59

Q2 2016

Shares 13,325 Value ($000) $768 Avg Close $39.48 Range $37.06 - $41.09

Q1 2016

Shares 13,525 Value ($000) $716 Avg Close $36.03 Range $33.60 - $37.88

Q4 2015

Shares 14,575 Value ($000) $770 Avg Close $36.77 Range $33.58 - $38.73

Q3 2015

Shares 5,195 Value ($000) $257 Avg Close $38.40 Range $31.46 - $41.36

Q2 2015

Shares 18,838 Value ($000) $1,072 Avg Close $40.23 Range $38.42 - $42.17

Q1 2015

Shares 19,988 Value ($000) $1,149 Avg Close $40.30 Range $37.94 - $43.13

Q4 2014

Shares 20,948 Value ($000) $1,190 Avg Close $39.35 Range $35.32 - $41.85

Q3 2014

Shares 21,485 Value ($000) $1,274 Avg Close $39.37 Range $37.12 - $41.03

Q2 2014

Shares 21,485 Value ($000) $1,243 Avg Close $37.96 Range $36.06 - $39.67

Q1 2014

Shares 10,395 Value ($000) $590 Avg Close $35.76 Range $32.43 - $37.92

Q4 2013

Shares 9,695 Value ($000) $485 Avg Close $31.29 Range $29.09 - $32.94

Q3 2013

Shares 20,860 Value ($000) $993 Avg Close $30.97 Range $29.74 - $31.75

Q2 2013

Shares 25,775 Value ($000) $1,197 Avg Close $30.02 Range $28.02 - $32.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	22,494	$2,368	$93.24	$81.31 - $107.59
Q3 2025	23,057	$1,935	$81.01	$75.27 - $86.24
Q2 2025	19,088	$1,511	$77.39	$71.26 - $87.25
Q1 2025	17,100	$1,535	$90.12	$78.10 - $99.24
Q4 2024	12,421	$1,236	$98.70	$90.33 - $109.75
Q3 2024	11,186	$1,270	$112.96	$105.16 - $123.40
Q2 2024	11,766	$1,457	$121.72	$114.80 - $127.87
Q1 2024	11,982	$1,581	$115.77	$102.41 - $125.66
Q4 2023	12,277	$1,338	$96.81	$92.34 - $102.48
Q3 2023	13,147	$1,353	$99.84	$95.67 - $106.04
Q2 2023	23,522	$2,714	$104.47	$97.02 - $109.95
Q1 2023	23,395	$2,489	$98.68	$92.86 - $105.40
Q4 2022	13,111	$1,455	$92.80	$77.99 - $103.03
Q3 2022	13,073	$1,126	$80.41	$76.51 - $85.75
Q2 2022	13,974	$1,274	$79.21	$72.83 - $86.09
Q1 2022	16,658	$1,367	$69.85	$64.44 - $74.38
Q4 2021	17,595	$1,348	$69.89	$62.63 - $80.06
Q3 2021	33,719	$2,533	$66.14	$62.09 - $68.78
Q2 2021	40,484	$3,148	$64.14	$59.83 - $67.79
Q1 2021	41,924	$3,232	$63.06	$58.39 - $69.69
Q4 2020	42,621	$3,486	$64.85	$59.73 - $68.80
Q3 2020	42,413	$3,518	$65.93	$60.98 - $70.41
Q2 2020	42,313	$3,272	$62.87	$58.07 - $67.36
Q1 2020	21,318	$1,640	$65.09	$51.91 - $72.71
Q4 2019	18,768	$1,707	$67.55	$62.89 - $73.10
Q3 2019	17,018	$1,433	$65.47	$61.22 - $68.01
Q2 2019	16,468	$1,381	$62.14	$55.86 - $67.34
Q1 2019	14,268	$1,187	$60.29	$55.35 - $64.55
Q4 2018	12,268	$937	$56.50	$50.42 - $61.17
Q3 2018	12,579	$892	$50.65	$45.40 - $54.60
Q2 2018	13,134	$797	$44.52	$39.72 - $47.34
Q1 2018	13,489	$735	$42.25	$39.59 - $47.54
Q4 2017	13,086	$736	$43.00	$39.63 - $47.96
Q3 2017	12,775	$818	$46.68	$44.87 - $49.08
Q2 2017	12,775	$819	$46.54	$45.06 - $48.72
Q1 2017	13,125	$834	$46.06	$42.70 - $48.31
Q4 2016	13,125	$773	$44.08	$41.83 - $46.98
Q3 2016	13,125	$819	$43.73	$40.74 - $45.59
Q2 2016	13,325	$768	$39.48	$37.06 - $41.09
Q1 2016	13,525	$716	$36.03	$33.60 - $37.88
Q4 2015	14,575	$770	$36.77	$33.58 - $38.73
Q3 2015	5,195	$257	$38.40	$31.46 - $41.36
Q2 2015	18,838	$1,072	$40.23	$38.42 - $42.17
Q1 2015	19,988	$1,149	$40.30	$37.94 - $43.13
Q4 2014	20,948	$1,190	$39.35	$35.32 - $41.85
Q3 2014	21,485	$1,274	$39.37	$37.12 - $41.03
Q2 2014	21,485	$1,243	$37.96	$36.06 - $39.67
Q1 2014	10,395	$590	$35.76	$32.43 - $37.92
Q4 2013	9,695	$485	$31.29	$29.09 - $32.94
Q3 2013	20,860	$993	$30.97	$29.74 - $31.75
Q2 2013	25,775	$1,197	$30.02	$28.02 - $32.11