MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

STATE OF MICHIGAN RETIREMENT SYSTEM's Holding History (CIK: 0000762152)

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

Q4 2025

Shares 724,490 Value ($000) $76,260 Avg Close $93.24 Range $81.31 - $107.59

Q3 2025

Shares 737,790 Value ($000) $61,923 Avg Close $81.01 Range $75.27 - $86.24

Q2 2025

Shares 745,090 Value ($000) $58,981 Avg Close $77.39 Range $71.26 - $87.25

Q1 2025

Shares 719,290 Value ($000) $64,563 Avg Close $90.12 Range $78.10 - $99.24

Q4 2024

Shares 719,590 Value ($000) $71,585 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 690,290 Value ($000) $78,389 Avg Close $112.96 Range $105.16 - $123.40

Q2 2024

Shares 693,690 Value ($000) $85,879 Avg Close $121.72 Range $114.80 - $127.87

Q1 2024

Shares 694,290 Value ($000) $91,612 Avg Close $115.77 Range $102.41 - $125.66

Q4 2023

Shares 693,790 Value ($000) $75,637 Avg Close $96.81 Range $92.34 - $102.48

Q3 2023

Shares 720,790 Value ($000) $74,205 Avg Close $99.84 Range $95.67 - $106.04

Q2 2023

Shares 729,190 Value ($000) $84,141 Avg Close $104.47 Range $97.02 - $109.95

Q1 2023

Shares 730,990 Value ($000) $77,770 Avg Close $98.68 Range $92.86 - $105.40

Q4 2022

Shares 723,790 Value ($000) $80,305 Avg Close $92.80 Range $77.99 - $103.03

Q3 2022

Shares 729,190 Value ($000) $62,798 Avg Close $80.41 Range $76.51 - $85.75

Q2 2022

Shares 725,890 Value ($000) $66,179 Avg Close $79.21 Range $72.83 - $86.09

Q1 2022

Shares 636,990 Value ($000) $52,265 Avg Close $69.85 Range $64.44 - $74.38

Q4 2021

Shares 635,917 Value ($000) $48,737 Avg Close $69.89 Range $62.63 - $80.06

Q3 2021

Shares 658,117 Value ($000) $49,431 Avg Close $66.14 Range $62.09 - $68.78

Q2 2021

Shares 659,017 Value ($000) $51,252 Avg Close $64.14 Range $59.83 - $67.79

Q1 2021

Shares 823,017 Value ($000) $63,446 Avg Close $63.06 Range $58.39 - $69.69

Q4 2020

Shares 824,217 Value ($000) $67,421 Avg Close $64.85 Range $59.73 - $68.80

Q3 2020

Shares 838,117 Value ($000) $69,522 Avg Close $65.93 Range $60.98 - $70.41

Q2 2020

Shares 814,517 Value ($000) $62,987 Avg Close $62.87 Range $58.07 - $67.36

Q1 2020

Shares 583,649 Value ($000) $44,906 Avg Close $65.09 Range $51.91 - $72.71

Q4 2019

Shares 615,749 Value ($000) $56,002 Avg Close $67.55 Range $62.89 - $73.10

Q3 2019

Shares 654,649 Value ($000) $55,108 Avg Close $65.47 Range $61.22 - $68.01

Q2 2019

Shares 655,449 Value ($000) $54,959 Avg Close $62.14 Range $55.86 - $67.34

Q1 2019

Shares 782,949 Value ($000) $65,118 Avg Close $60.29 Range $55.35 - $64.55

Q4 2018

Shares 783,549 Value ($000) $59,871 Avg Close $56.50 Range $50.42 - $61.17

Q3 2018

Shares 831,549 Value ($000) $58,990 Avg Close $50.65 Range $45.40 - $54.60

Q2 2018

Shares 835,649 Value ($000) $50,724 Avg Close $44.52 Range $39.72 - $47.34

Q1 2018

Shares 832,849 Value ($000) $45,365 Avg Close $42.25 Range $39.59 - $47.54

Q4 2017

Shares 840,849 Value ($000) $47,315 Avg Close $43.00 Range $39.63 - $47.96

Q3 2017

Shares 869,049 Value ($000) $55,645 Avg Close $46.68 Range $44.87 - $49.08

Q2 2017

Shares 1,122,449 Value ($000) $71,938 Avg Close $46.54 Range $45.06 - $48.72

Q1 2017

Shares 1,125,349 Value ($000) $71,505 Avg Close $46.06 Range $42.70 - $48.31

Q4 2016

Shares 1,125,149 Value ($000) $66,238 Avg Close $44.08 Range $41.83 - $46.98

Q3 2016

Shares 1,188,553 Value ($000) $74,178 Avg Close $43.73 Range $40.74 - $45.59

Q2 2016

Shares 1,185,053 Value ($000) $68,271 Avg Close $39.48 Range $37.06 - $41.09

Q1 2016

Shares 1,179,053 Value ($000) $62,384 Avg Close $36.03 Range $33.60 - $37.88

Q4 2015

Shares 1,178,953 Value ($000) $62,272 Avg Close $36.77 Range $33.58 - $38.73

Q3 2015

Shares 1,261,553 Value ($000) $62,308 Avg Close $38.40 Range $31.46 - $41.36

Q2 2015

Shares 1,357,753 Value ($000) $77,297 Avg Close $40.23 Range $38.42 - $42.17

Q1 2015

Shares 1,384,964 Value ($000) $79,608 Avg Close $40.30 Range $37.94 - $43.13

Q4 2014

Shares 1,464,464 Value ($000) $83,167 Avg Close $39.35 Range $35.32 - $41.85

Q3 2014

Shares 1,537,327 Value ($000) $91,133 Avg Close $39.37 Range $37.12 - $41.03

Q2 2014

Shares 1,559,227 Value ($000) $90,201 Avg Close $37.96 Range $36.06 - $39.67

Q1 2014

Shares 2,070,833 Value ($000) $117,561 Avg Close $35.76 Range $32.43 - $37.92

Q4 2013

Shares 2,768,433 Value ($000) $138,560 Avg Close $31.29 Range $29.09 - $32.94

Q3 2013

Shares 2,770,933 Value ($000) $131,924 Avg Close $30.97 Range $29.74 - $31.75

Q2 2013

Shares 2,807,033 Value ($000) $130,387 Avg Close $30.02 Range $28.02 - $32.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	724,490	$76,260	$93.24	$81.31 - $107.59
Q3 2025	737,790	$61,923	$81.01	$75.27 - $86.24
Q2 2025	745,090	$58,981	$77.39	$71.26 - $87.25
Q1 2025	719,290	$64,563	$90.12	$78.10 - $99.24
Q4 2024	719,590	$71,585	$98.70	$90.33 - $109.75
Q3 2024	690,290	$78,389	$112.96	$105.16 - $123.40
Q2 2024	693,690	$85,879	$121.72	$114.80 - $127.87
Q1 2024	694,290	$91,612	$115.77	$102.41 - $125.66
Q4 2023	693,790	$75,637	$96.81	$92.34 - $102.48
Q3 2023	720,790	$74,205	$99.84	$95.67 - $106.04
Q2 2023	729,190	$84,141	$104.47	$97.02 - $109.95
Q1 2023	730,990	$77,770	$98.68	$92.86 - $105.40
Q4 2022	723,790	$80,305	$92.80	$77.99 - $103.03
Q3 2022	729,190	$62,798	$80.41	$76.51 - $85.75
Q2 2022	725,890	$66,179	$79.21	$72.83 - $86.09
Q1 2022	636,990	$52,265	$69.85	$64.44 - $74.38
Q4 2021	635,917	$48,737	$69.89	$62.63 - $80.06
Q3 2021	658,117	$49,431	$66.14	$62.09 - $68.78
Q2 2021	659,017	$51,252	$64.14	$59.83 - $67.79
Q1 2021	823,017	$63,446	$63.06	$58.39 - $69.69
Q4 2020	824,217	$67,421	$64.85	$59.73 - $68.80
Q3 2020	838,117	$69,522	$65.93	$60.98 - $70.41
Q2 2020	814,517	$62,987	$62.87	$58.07 - $67.36
Q1 2020	583,649	$44,906	$65.09	$51.91 - $72.71
Q4 2019	615,749	$56,002	$67.55	$62.89 - $73.10
Q3 2019	654,649	$55,108	$65.47	$61.22 - $68.01
Q2 2019	655,449	$54,959	$62.14	$55.86 - $67.34
Q1 2019	782,949	$65,118	$60.29	$55.35 - $64.55
Q4 2018	783,549	$59,871	$56.50	$50.42 - $61.17
Q3 2018	831,549	$58,990	$50.65	$45.40 - $54.60
Q2 2018	835,649	$50,724	$44.52	$39.72 - $47.34
Q1 2018	832,849	$45,365	$42.25	$39.59 - $47.54
Q4 2017	840,849	$47,315	$43.00	$39.63 - $47.96
Q3 2017	869,049	$55,645	$46.68	$44.87 - $49.08
Q2 2017	1,122,449	$71,938	$46.54	$45.06 - $48.72
Q1 2017	1,125,349	$71,505	$46.06	$42.70 - $48.31
Q4 2016	1,125,149	$66,238	$44.08	$41.83 - $46.98
Q3 2016	1,188,553	$74,178	$43.73	$40.74 - $45.59
Q2 2016	1,185,053	$68,271	$39.48	$37.06 - $41.09
Q1 2016	1,179,053	$62,384	$36.03	$33.60 - $37.88
Q4 2015	1,178,953	$62,272	$36.77	$33.58 - $38.73
Q3 2015	1,261,553	$62,308	$38.40	$31.46 - $41.36
Q2 2015	1,357,753	$77,297	$40.23	$38.42 - $42.17
Q1 2015	1,384,964	$79,608	$40.30	$37.94 - $43.13
Q4 2014	1,464,464	$83,167	$39.35	$35.32 - $41.85
Q3 2014	1,537,327	$91,133	$39.37	$37.12 - $41.03
Q2 2014	1,559,227	$90,201	$37.96	$36.06 - $39.67
Q1 2014	2,070,833	$117,561	$35.76	$32.43 - $37.92
Q4 2013	2,768,433	$138,560	$31.29	$29.09 - $32.94
Q3 2013	2,770,933	$131,924	$30.97	$29.74 - $31.75
Q2 2013	2,807,033	$130,387	$30.02	$28.02 - $32.11