MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

GUYASUTA INVESTMENT ADVISORS INC's Holding History (CIK: 0000928568)

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

Q4 2025

Shares 66,835 Value ($000) $7,035 Avg Close $93.24 Range $81.31 - $107.59

Q3 2025

Shares 61,696 Value ($000) $5,178 Avg Close $81.01 Range $75.27 - $86.24

Q2 2025

Shares 63,811 Value ($000) $5,051 Avg Close $77.39 Range $71.26 - $87.25

Q1 2025

Shares 64,271 Value ($000) $5,769 Avg Close $90.12 Range $78.10 - $99.24

Q4 2024

Shares 65,361 Value ($000) $6,502 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 66,547 Value ($000) $7,557 Avg Close $112.96 Range $105.16 - $123.40

Q2 2024

Shares 68,075 Value ($000) $7,422 Avg Close $121.72 Range $114.80 - $127.87

Q1 2024

Shares 68,075 Value ($000) $7,422 Avg Close $115.77 Range $102.41 - $125.66

Q4 2023

Shares 68,075 Value ($000) $7,422 Avg Close $96.81 Range $92.34 - $102.48

Q3 2023

Shares 69,180 Value ($000) $7,122 Avg Close $99.84 Range $95.67 - $106.04

Q2 2023

Shares 70,250 Value ($000) $8,106 Avg Close $104.47 Range $97.02 - $109.95

Q1 2023

Shares 74,065 Value ($000) $7,880 Avg Close $98.68 Range $92.86 - $105.40

Q4 2022

Shares 76,317 Value ($000) $8,467 Avg Close $92.80 Range $77.99 - $103.03

Q3 2022

Shares 74,129 Value ($000) $6,384 Avg Close $80.41 Range $76.51 - $85.75

Q2 2022

Shares 73,499 Value ($000) $6,701 Avg Close $79.21 Range $72.83 - $86.09

Q1 2022

Shares 73,434 Value ($000) $6,025 Avg Close $69.85 Range $64.44 - $74.38

Q4 2021

Shares 73,619 Value ($000) $5,642 Avg Close $69.89 Range $62.63 - $80.06

Q3 2021

Shares 76,874 Value ($000) $5,774 Avg Close $66.14 Range $62.09 - $68.78

Q2 2021

Shares 75,505 Value ($000) $5,872 Avg Close $64.14 Range $59.83 - $67.79

Q1 2021

Shares 72,150 Value ($000) $5,562 Avg Close $63.06 Range $58.39 - $69.69

Q4 2020

Shares 77,056 Value ($000) $6,303 Avg Close $64.85 Range $59.73 - $68.80

Q3 2020

Shares 76,881 Value ($000) $6,377 Avg Close $65.93 Range $60.98 - $70.41

Q2 2020

Shares 72,874 Value ($000) $5,635 Avg Close $62.87 Range $58.07 - $67.36

Q1 2020

Shares 71,429 Value ($000) $5,496 Avg Close $65.09 Range $51.91 - $72.71

Q4 2019

Shares 67,995 Value ($000) $6,184 Avg Close $67.55 Range $62.89 - $73.10

Q3 2019

Shares 68,604 Value ($000) $5,775 Avg Close $65.47 Range $61.22 - $68.01

Q2 2019

Shares 71,107 Value ($000) $5,962 Avg Close $62.14 Range $55.86 - $67.34

Q1 2019

Shares 68,402 Value ($000) $5,689 Avg Close $60.29 Range $55.35 - $64.55

Q4 2018

Shares 68,702 Value ($000) $5,250 Avg Close $56.50 Range $50.42 - $61.17

Q3 2018

Shares 71,002 Value ($000) $5,037 Avg Close $50.65 Range $45.40 - $54.60

Q2 2018

Shares 71,993 Value ($000) $4,370 Avg Close $44.52 Range $39.72 - $47.34

Q1 2018

Shares 73,671 Value ($000) $4,013 Avg Close $42.25 Range $39.59 - $47.54

Q4 2017

Shares 64,934 Value ($000) $3,654 Avg Close $43.00 Range $39.63 - $47.96

Q3 2017

Shares 69,355 Value ($000) $4,441 Avg Close $46.68 Range $44.87 - $49.08

Q2 2017

Shares 68,395 Value ($000) $4,383 Avg Close $46.54 Range $45.06 - $48.72

Q1 2017

Shares 69,751 Value ($000) $4,432 Avg Close $46.06 Range $42.70 - $48.31

Q4 2016

Shares 69,886 Value ($000) $4,114 Avg Close $44.08 Range $41.83 - $46.98

Q3 2016

Shares 57,492 Value ($000) $3,588 Avg Close $43.73 Range $40.74 - $45.59

Q2 2016

Shares 57,424 Value ($000) $3,308 Avg Close $39.48 Range $37.06 - $41.09

Q1 2016

Shares 62,113 Value ($000) $3,286 Avg Close $36.03 Range $33.60 - $37.88

Q4 2015

Shares 60,677 Value ($000) $3,204 Avg Close $36.77 Range $33.58 - $38.73

Q3 2015

Shares 62,454 Value ($000) $3,084 Avg Close $38.40 Range $31.46 - $41.36

Q2 2015

Shares 52,043 Value ($000) $2,962 Avg Close $40.23 Range $38.42 - $42.17

Q1 2015

Shares 48,169 Value ($000) $2,768 Avg Close $40.30 Range $37.94 - $43.13

Q4 2014

Shares 44,663 Value ($000) $2,536 Avg Close $39.35 Range $35.32 - $41.85

Q3 2014

Shares 43,363 Value ($000) $2,570 Avg Close $39.37 Range $37.12 - $41.03

Q2 2014

Shares 43,088 Value ($000) $2,492 Avg Close $37.96 Range $36.06 - $39.67

Q1 2014

Shares 43,118 Value ($000) $2,447 Avg Close $35.76 Range $32.43 - $37.92

Q4 2013

Shares 54,218 Value ($000) $2,713 Avg Close $31.29 Range $29.09 - $32.94

Q3 2013

Shares 43,838 Value ($000) $2,087 Avg Close $30.97 Range $29.74 - $31.75

Q2 2013

Shares 44,788 Value ($000) $2,080 Avg Close $30.02 Range $28.02 - $32.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	66,835	$7,035	$93.24	$81.31 - $107.59
Q3 2025	61,696	$5,178	$81.01	$75.27 - $86.24
Q2 2025	63,811	$5,051	$77.39	$71.26 - $87.25
Q1 2025	64,271	$5,769	$90.12	$78.10 - $99.24
Q4 2024	65,361	$6,502	$98.70	$90.33 - $109.75
Q3 2024	66,547	$7,557	$112.96	$105.16 - $123.40
Q2 2024	68,075	$7,422	$121.72	$114.80 - $127.87
Q1 2024	68,075	$7,422	$115.77	$102.41 - $125.66
Q4 2023	68,075	$7,422	$96.81	$92.34 - $102.48
Q3 2023	69,180	$7,122	$99.84	$95.67 - $106.04
Q2 2023	70,250	$8,106	$104.47	$97.02 - $109.95
Q1 2023	74,065	$7,880	$98.68	$92.86 - $105.40
Q4 2022	76,317	$8,467	$92.80	$77.99 - $103.03
Q3 2022	74,129	$6,384	$80.41	$76.51 - $85.75
Q2 2022	73,499	$6,701	$79.21	$72.83 - $86.09
Q1 2022	73,434	$6,025	$69.85	$64.44 - $74.38
Q4 2021	73,619	$5,642	$69.89	$62.63 - $80.06
Q3 2021	76,874	$5,774	$66.14	$62.09 - $68.78
Q2 2021	75,505	$5,872	$64.14	$59.83 - $67.79
Q1 2021	72,150	$5,562	$63.06	$58.39 - $69.69
Q4 2020	77,056	$6,303	$64.85	$59.73 - $68.80
Q3 2020	76,881	$6,377	$65.93	$60.98 - $70.41
Q2 2020	72,874	$5,635	$62.87	$58.07 - $67.36
Q1 2020	71,429	$5,496	$65.09	$51.91 - $72.71
Q4 2019	67,995	$6,184	$67.55	$62.89 - $73.10
Q3 2019	68,604	$5,775	$65.47	$61.22 - $68.01
Q2 2019	71,107	$5,962	$62.14	$55.86 - $67.34
Q1 2019	68,402	$5,689	$60.29	$55.35 - $64.55
Q4 2018	68,702	$5,250	$56.50	$50.42 - $61.17
Q3 2018	71,002	$5,037	$50.65	$45.40 - $54.60
Q2 2018	71,993	$4,370	$44.52	$39.72 - $47.34
Q1 2018	73,671	$4,013	$42.25	$39.59 - $47.54
Q4 2017	64,934	$3,654	$43.00	$39.63 - $47.96
Q3 2017	69,355	$4,441	$46.68	$44.87 - $49.08
Q2 2017	68,395	$4,383	$46.54	$45.06 - $48.72
Q1 2017	69,751	$4,432	$46.06	$42.70 - $48.31
Q4 2016	69,886	$4,114	$44.08	$41.83 - $46.98
Q3 2016	57,492	$3,588	$43.73	$40.74 - $45.59
Q2 2016	57,424	$3,308	$39.48	$37.06 - $41.09
Q1 2016	62,113	$3,286	$36.03	$33.60 - $37.88
Q4 2015	60,677	$3,204	$36.77	$33.58 - $38.73
Q3 2015	62,454	$3,084	$38.40	$31.46 - $41.36
Q2 2015	52,043	$2,962	$40.23	$38.42 - $42.17
Q1 2015	48,169	$2,768	$40.30	$37.94 - $43.13
Q4 2014	44,663	$2,536	$39.35	$35.32 - $41.85
Q3 2014	43,363	$2,570	$39.37	$37.12 - $41.03
Q2 2014	43,088	$2,492	$37.96	$36.06 - $39.67
Q1 2014	43,118	$2,447	$35.76	$32.43 - $37.92
Q4 2013	54,218	$2,713	$31.29	$29.09 - $32.94
Q3 2013	43,838	$2,087	$30.97	$29.74 - $31.75
Q2 2013	44,788	$2,080	$30.02	$28.02 - $32.11