MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

First Dallas Securities Inc.'s Holding History (CIK: 0001378559)

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

Q4 2025

Shares 10,671 Value ($000) $1,123 Avg Close $93.24 Range $81.31 - $107.59

Q3 2025

Shares 10,509 Value ($000) $882 Avg Close $81.01 Range $75.27 - $86.24

Q2 2025

Shares 11,927 Value ($000) $944 Avg Close $77.39 Range $71.26 - $87.25

Q1 2025

Shares 20,664 Value ($000) $1,855 Avg Close $90.12 Range $78.10 - $99.24

Q4 2024

Shares 21,336 Value ($000) $2,122 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 25,231 Value ($000) $2,865 Avg Close $112.96 Range $105.16 - $123.40

Q2 2024

Shares 22,327 Value ($000) $2,764 Avg Close $121.72 Range $114.80 - $127.87

Q1 2024

Shares 20,559 Value ($000) $3 Avg Close $115.77 Range $102.41 - $125.66

Q4 2023

Shares 18,550 Value ($000) $2 Avg Close $96.81 Range $92.34 - $102.48

Q3 2023

Shares 12,654 Value ($000) $1 Avg Close $99.84 Range $95.67 - $106.04

Q2 2023

Shares 16,310 Value ($000) $2 Avg Close $104.47 Range $97.02 - $109.95

Q1 2023

Shares 15,649 Value ($000) $2 Avg Close $98.68 Range $92.86 - $105.40

Q4 2022

Shares 15,640 Value ($000) $2 Avg Close $92.80 Range $77.99 - $103.03

Q3 2022

Shares 8,427 Value ($000) $726 Avg Close $80.41 Range $76.51 - $85.75

Q2 2022

Shares 6,291 Value ($000) $574 Avg Close $79.21 Range $72.83 - $86.09

Q1 2022

Shares 6,279 Value ($000) $515 Avg Close $69.85 Range $64.44 - $74.38

Q4 2021

Shares 5,929 Value ($000) $454 Avg Close $69.89 Range $62.63 - $80.06

Q3 2021

Shares 6,076 Value ($000) $456 Avg Close $66.14 Range $62.09 - $68.78

Q2 2021

Shares 17,397 Value ($000) $1,353 Avg Close $64.14 Range $59.83 - $67.79

Q1 2021

Shares 20,493 Value ($000) $1,580 Avg Close $63.06 Range $58.39 - $69.69

Q4 2020

Shares 25,389 Value ($000) $2,077 Avg Close $64.85 Range $59.73 - $68.80

Q3 2020

Shares 26,385 Value ($000) $2,189 Avg Close $65.93 Range $60.98 - $70.41

Q1 2020

Shares 36,822 Value ($000) $2,833 Avg Close $65.09 Range $51.91 - $72.71

Q4 2019

Shares 37,267 Value ($000) $3,389 Avg Close $67.55 Range $62.89 - $73.10

Q3 2019

Shares 37,262 Value ($000) $3,137 Avg Close $65.47 Range $61.22 - $68.01

Q2 2019

Shares 36,712 Value ($000) $3,078 Avg Close $62.14 Range $55.86 - $67.34

Q4 2017

Shares 11,532 Value ($000) $649 Avg Close $43.00 Range $39.63 - $47.96

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	10,671	$1,123	$93.24	$81.31 - $107.59
Q3 2025	10,509	$882	$81.01	$75.27 - $86.24
Q2 2025	11,927	$944	$77.39	$71.26 - $87.25
Q1 2025	20,664	$1,855	$90.12	$78.10 - $99.24
Q4 2024	21,336	$2,122	$98.70	$90.33 - $109.75
Q3 2024	25,231	$2,865	$112.96	$105.16 - $123.40
Q2 2024	22,327	$2,764	$121.72	$114.80 - $127.87
Q1 2024	20,559	$3	$115.77	$102.41 - $125.66
Q4 2023	18,550	$2	$96.81	$92.34 - $102.48
Q3 2023	12,654	$1	$99.84	$95.67 - $106.04
Q2 2023	16,310	$2	$104.47	$97.02 - $109.95
Q1 2023	15,649	$2	$98.68	$92.86 - $105.40
Q4 2022	15,640	$2	$92.80	$77.99 - $103.03
Q3 2022	8,427	$726	$80.41	$76.51 - $85.75
Q2 2022	6,291	$574	$79.21	$72.83 - $86.09
Q1 2022	6,279	$515	$69.85	$64.44 - $74.38
Q4 2021	5,929	$454	$69.89	$62.63 - $80.06
Q3 2021	6,076	$456	$66.14	$62.09 - $68.78
Q2 2021	17,397	$1,353	$64.14	$59.83 - $67.79
Q1 2021	20,493	$1,580	$63.06	$58.39 - $69.69
Q4 2020	25,389	$2,077	$64.85	$59.73 - $68.80
Q3 2020	26,385	$2,189	$65.93	$60.98 - $70.41
Q1 2020	36,822	$2,833	$65.09	$51.91 - $72.71
Q4 2019	37,267	$3,389	$67.55	$62.89 - $73.10
Q3 2019	37,262	$3,137	$65.47	$61.22 - $68.01
Q2 2019	36,712	$3,078	$62.14	$55.86 - $67.34
Q4 2017	11,532	$649	$43.00	$39.63 - $47.96