MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

PARTHENON LLC's Holding History (CIK: 0001088859)

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

Q4 2025

Shares 153,741 Value ($000) $16,183 Avg Close $93.24 Range $81.31 - $107.59

Q3 2025

Shares 154,162 Value ($000) $12,939 Avg Close $81.01 Range $75.27 - $86.24

Q2 2025

Shares 156,264 Value ($000) $12,370 Avg Close $77.39 Range $71.26 - $87.25

Q1 2025

Shares 155,964 Value ($000) $13,999 Avg Close $90.12 Range $78.10 - $99.24

Q4 2024

Shares 158,200 Value ($000) $15,738 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 158,720 Value ($000) $18,024 Avg Close $112.96 Range $105.16 - $123.40

Q2 2024

Shares 159,120 Value ($000) $19,699 Avg Close $121.72 Range $114.80 - $127.87

Q1 2024

Shares 158,845 Value ($000) $20,960 Avg Close $115.77 Range $102.41 - $125.66

Q4 2023

Shares 158,883 Value ($000) $17,321 Avg Close $96.81 Range $92.34 - $102.48

Q3 2023

Shares 160,479 Value ($000) $16,521 Avg Close $99.84 Range $95.67 - $106.04

Q2 2023

Shares 160,479 Value ($000) $18,518 Avg Close $104.47 Range $97.02 - $109.95

Q1 2023

Shares 160,579 Value ($000) $17,084 Avg Close $98.68 Range $92.86 - $105.40

Q4 2022

Shares 160,616 Value ($000) $17,820 Avg Close $92.80 Range $77.99 - $103.03

Q3 2022

Shares 160,516 Value ($000) $13,824 Avg Close $80.41 Range $76.51 - $85.75

Q2 2022

Shares 160,906 Value ($000) $14,670 Avg Close $79.21 Range $72.83 - $86.09

Q1 2022

Shares 161,481 Value ($000) $13,250 Avg Close $69.85 Range $64.44 - $74.38

Q4 2021

Shares 156,393 Value ($000) $11,986 Avg Close $69.89 Range $62.63 - $80.06

Q3 2021

Shares 153,818 Value ($000) $11,553 Avg Close $66.14 Range $62.09 - $68.78

Q2 2021

Shares 152,968 Value ($000) $11,896 Avg Close $64.14 Range $59.83 - $67.79

Q1 2021

Shares 152,028 Value ($000) $11,720 Avg Close $63.06 Range $58.39 - $69.69

Q4 2020

Shares 151,219 Value ($000) $12,370 Avg Close $64.85 Range $59.73 - $68.80

Q3 2020

Shares 144,864 Value ($000) $12,016 Avg Close $65.93 Range $60.98 - $70.41

Q2 2020

Shares 143,979 Value ($000) $11,134 Avg Close $62.87 Range $58.07 - $67.36

Q1 2020

Shares 144,104 Value ($000) $11,087 Avg Close $65.09 Range $51.91 - $72.71

Q4 2019

Shares 142,394 Value ($000) $12,951 Avg Close $67.55 Range $62.89 - $73.10

Q3 2019

Shares 141,844 Value ($000) $11,940 Avg Close $65.47 Range $61.22 - $68.01

Q2 2019

Shares 143,683 Value ($000) $12,048 Avg Close $62.14 Range $55.86 - $67.34

Q1 2019

Shares 143,758 Value ($000) $11,956 Avg Close $60.29 Range $55.35 - $64.55

Q4 2018

Shares 148,577 Value ($000) $11,353 Avg Close $56.50 Range $50.42 - $61.17

Q3 2018

Shares 148,197 Value ($000) $10,513 Avg Close $50.65 Range $45.40 - $54.60

Q2 2018

Shares 153,558 Value ($000) $9,321 Avg Close $44.52 Range $39.72 - $47.34

Q1 2018

Shares 150,334 Value ($000) $8,189 Avg Close $42.25 Range $39.59 - $47.54

Q4 2017

Shares 148,129 Value ($000) $8,335 Avg Close $43.00 Range $39.63 - $47.96

Q3 2017

Shares 158,764 Value ($000) $10,166 Avg Close $46.68 Range $44.87 - $49.08

Q2 2017

Shares 171,114 Value ($000) $10,967 Avg Close $46.54 Range $45.06 - $48.72

Q1 2017

Shares 170,664 Value ($000) $10,844 Avg Close $46.06 Range $42.70 - $48.31

Q4 2016

Shares 175,539 Value ($000) $10,334 Avg Close $44.08 Range $41.83 - $46.98

Q3 2016

Shares 177,343 Value ($000) $11,068 Avg Close $43.73 Range $40.74 - $45.59

Q2 2016

Shares 180,743 Value ($000) $10,413 Avg Close $39.48 Range $37.06 - $41.09

Q1 2016

Shares 179,793 Value ($000) $9,513 Avg Close $36.03 Range $33.60 - $37.88

Q4 2015

Shares 178,233 Value ($000) $9,414 Avg Close $36.77 Range $33.58 - $38.73

Q3 2015

Shares 176,843 Value ($000) $8,734 Avg Close $38.40 Range $31.46 - $41.36

Q2 2015

Shares 178,963 Value ($000) $10,188 Avg Close $40.23 Range $38.42 - $42.17

Q1 2015

Shares 178,633 Value ($000) $10,268 Avg Close $40.30 Range $37.94 - $43.13

Q4 2014

Shares 177,393 Value ($000) $10,074 Avg Close $39.35 Range $35.32 - $41.85

Q3 2014

Shares 177,348 Value ($000) $10,513 Avg Close $39.37 Range $37.12 - $41.03

Q2 2014

Shares 177,383 Value ($000) $10,262 Avg Close $37.96 Range $36.06 - $39.67

Q1 2014

Shares 178,048 Value ($000) $10,108 Avg Close $35.76 Range $32.43 - $37.92

Q4 2013

Shares 179,423 Value ($000) $8,980 Avg Close $31.29 Range $29.09 - $32.94

Q3 2013

Shares 179,973 Value ($000) $8,568 Avg Close $30.97 Range $29.74 - $31.75

Q2 2013

Shares 182,873 Value ($000) $8,494 Avg Close $30.02 Range $28.02 - $32.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	153,741	$16,183	$93.24	$81.31 - $107.59
Q3 2025	154,162	$12,939	$81.01	$75.27 - $86.24
Q2 2025	156,264	$12,370	$77.39	$71.26 - $87.25
Q1 2025	155,964	$13,999	$90.12	$78.10 - $99.24
Q4 2024	158,200	$15,738	$98.70	$90.33 - $109.75
Q3 2024	158,720	$18,024	$112.96	$105.16 - $123.40
Q2 2024	159,120	$19,699	$121.72	$114.80 - $127.87
Q1 2024	158,845	$20,960	$115.77	$102.41 - $125.66
Q4 2023	158,883	$17,321	$96.81	$92.34 - $102.48
Q3 2023	160,479	$16,521	$99.84	$95.67 - $106.04
Q2 2023	160,479	$18,518	$104.47	$97.02 - $109.95
Q1 2023	160,579	$17,084	$98.68	$92.86 - $105.40
Q4 2022	160,616	$17,820	$92.80	$77.99 - $103.03
Q3 2022	160,516	$13,824	$80.41	$76.51 - $85.75
Q2 2022	160,906	$14,670	$79.21	$72.83 - $86.09
Q1 2022	161,481	$13,250	$69.85	$64.44 - $74.38
Q4 2021	156,393	$11,986	$69.89	$62.63 - $80.06
Q3 2021	153,818	$11,553	$66.14	$62.09 - $68.78
Q2 2021	152,968	$11,896	$64.14	$59.83 - $67.79
Q1 2021	152,028	$11,720	$63.06	$58.39 - $69.69
Q4 2020	151,219	$12,370	$64.85	$59.73 - $68.80
Q3 2020	144,864	$12,016	$65.93	$60.98 - $70.41
Q2 2020	143,979	$11,134	$62.87	$58.07 - $67.36
Q1 2020	144,104	$11,087	$65.09	$51.91 - $72.71
Q4 2019	142,394	$12,951	$67.55	$62.89 - $73.10
Q3 2019	141,844	$11,940	$65.47	$61.22 - $68.01
Q2 2019	143,683	$12,048	$62.14	$55.86 - $67.34
Q1 2019	143,758	$11,956	$60.29	$55.35 - $64.55
Q4 2018	148,577	$11,353	$56.50	$50.42 - $61.17
Q3 2018	148,197	$10,513	$50.65	$45.40 - $54.60
Q2 2018	153,558	$9,321	$44.52	$39.72 - $47.34
Q1 2018	150,334	$8,189	$42.25	$39.59 - $47.54
Q4 2017	148,129	$8,335	$43.00	$39.63 - $47.96
Q3 2017	158,764	$10,166	$46.68	$44.87 - $49.08
Q2 2017	171,114	$10,967	$46.54	$45.06 - $48.72
Q1 2017	170,664	$10,844	$46.06	$42.70 - $48.31
Q4 2016	175,539	$10,334	$44.08	$41.83 - $46.98
Q3 2016	177,343	$11,068	$43.73	$40.74 - $45.59
Q2 2016	180,743	$10,413	$39.48	$37.06 - $41.09
Q1 2016	179,793	$9,513	$36.03	$33.60 - $37.88
Q4 2015	178,233	$9,414	$36.77	$33.58 - $38.73
Q3 2015	176,843	$8,734	$38.40	$31.46 - $41.36
Q2 2015	178,963	$10,188	$40.23	$38.42 - $42.17
Q1 2015	178,633	$10,268	$40.30	$37.94 - $43.13
Q4 2014	177,393	$10,074	$39.35	$35.32 - $41.85
Q3 2014	177,348	$10,513	$39.37	$37.12 - $41.03
Q2 2014	177,383	$10,262	$37.96	$36.06 - $39.67
Q1 2014	178,048	$10,108	$35.76	$32.43 - $37.92
Q4 2013	179,423	$8,980	$31.29	$29.09 - $32.94
Q3 2013	179,973	$8,568	$30.97	$29.74 - $31.75
Q2 2013	182,873	$8,494	$30.02	$28.02 - $32.11