MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

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

Q4 2025

Shares 64,973 Value ($000) $6,839 Avg Close $93.24 Range $81.31 - $107.59

Q3 2025

Shares 63,058 Value ($000) $5,292 Avg Close $81.01 Range $75.27 - $86.24

Q2 2025

Shares 69,199 Value ($000) $5,478 Avg Close $77.39 Range $71.26 - $87.25

Q1 2025

Shares 72,630 Value ($000) $6,519 Avg Close $90.12 Range $78.10 - $99.24

Q4 2024

Shares 79,163 Value ($000) $7,875 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 80,943 Value ($000) $9,192 Avg Close $112.96 Range $105.16 - $123.40

Q2 2024

Shares 76,771 Value ($000) $9,504 Avg Close $121.72 Range $114.80 - $127.87

Q1 2024

Shares 79,551 Value ($000) $10,497 Avg Close $115.77 Range $102.41 - $125.66

Q4 2023

Shares 82,490 Value ($000) $8,993 Avg Close $96.81 Range $92.34 - $102.48

Q3 2023

Shares 92,215 Value ($000) $9,494 Avg Close $99.84 Range $95.67 - $106.04

Q2 2023

Shares 121,795 Value ($000) $14,054 Avg Close $104.47 Range $97.02 - $109.95

Q1 2023

Shares 128,440 Value ($000) $13,665 Avg Close $98.68 Range $92.86 - $105.40

Q4 2022

Shares 164,285 Value ($000) $18,227 Avg Close $92.80 Range $77.99 - $103.03

Q3 2022

Shares 172,885 Value ($000) $14,889 Avg Close $80.41 Range $76.51 - $85.75

Q2 2022

Shares 175,625 Value ($000) $16,012 Avg Close $79.21 Range $72.83 - $86.09

Q1 2022

Shares 177,563 Value ($000) $14,569 Avg Close $69.85 Range $64.44 - $74.38

Q4 2021

Shares 176,933 Value ($000) $13,560 Avg Close $69.89 Range $62.63 - $80.06

Q3 2021

Shares 179,596 Value ($000) $13,489 Avg Close $66.14 Range $62.09 - $68.78

Q2 2021

Shares 188,821 Value ($000) $14,685 Avg Close $64.14 Range $59.83 - $67.79

Q1 2021

Shares 192,075 Value ($000) $14,807 Avg Close $63.06 Range $58.39 - $69.69

Q4 2020

Shares 119,897 Value ($000) $9,808 Avg Close $64.85 Range $59.73 - $68.80

Q3 2020

Shares 96,524 Value ($000) $8,007 Avg Close $65.93 Range $60.98 - $70.41

Q2 2020

Shares 38,490 Value ($000) $2,976 Avg Close $62.87 Range $58.07 - $67.36

Q1 2020

Shares 81,903 Value ($000) $6,302 Avg Close $65.09 Range $51.91 - $72.71

Q4 2019

Shares 74,441 Value ($000) $6,770 Avg Close $67.55 Range $62.89 - $73.10

Q3 2019

Shares 67,206 Value ($000) $5,657 Avg Close $65.47 Range $61.22 - $68.01

Q2 2019

Shares 71,256 Value ($000) $5,975 Avg Close $62.14 Range $55.86 - $67.34

Q1 2019

Shares 103,941 Value ($000) $8,645 Avg Close $60.29 Range $55.35 - $64.55

Q4 2018

Shares 106,291 Value ($000) $8,122 Avg Close $56.50 Range $50.42 - $61.17

Q3 2018

Shares 107,250 Value ($000) $7,608 Avg Close $50.65 Range $45.40 - $54.60

Q2 2018

Shares 103,250 Value ($000) $6,267 Avg Close $44.52 Range $39.72 - $47.34

Q1 2018

Shares 107,759 Value ($000) $5,870 Avg Close $42.25 Range $39.59 - $47.54

Q4 2017

Shares 107,702 Value ($000) $6,060 Avg Close $43.00 Range $39.63 - $47.96

Q3 2017

Shares 101,905 Value ($000) $6,525 Avg Close $46.68 Range $44.87 - $49.08

Q2 2017

Shares 105,805 Value ($000) $6,781 Avg Close $46.54 Range $45.06 - $48.72

Q1 2017

Shares 105,805 Value ($000) $6,723 Avg Close $46.06 Range $42.70 - $48.31

Q4 2016

Shares 106,605 Value ($000) $6,276 Avg Close $44.08 Range $41.83 - $46.98

Q3 2016

Shares 107,405 Value ($000) $6,703 Avg Close $43.73 Range $40.74 - $45.59

Q2 2016

Shares 113,505 Value ($000) $6,539 Avg Close $39.48 Range $37.06 - $41.09

Q1 2016

Shares 118,145 Value ($000) $6,251 Avg Close $36.03 Range $33.60 - $37.88

Q4 2015

Shares 139,615 Value ($000) $7,374 Avg Close $36.77 Range $33.58 - $38.73

Q3 2015

Shares 142,715 Value ($000) $7,049 Avg Close $38.40 Range $31.46 - $41.36

Q2 2015

Shares 148,540 Value ($000) $8,456 Avg Close $40.23 Range $38.42 - $42.17

Q1 2015

Shares 160,943 Value ($000) $9,251 Avg Close $40.30 Range $37.94 - $43.13

Q4 2014

Shares 144,408 Value ($000) $8,201 Avg Close $39.35 Range $35.32 - $41.85

Q3 2014

Shares 162,706 Value ($000) $9,645 Avg Close $39.37 Range $37.12 - $41.03

Q2 2014

Shares 160,316 Value ($000) $9,274 Avg Close $37.96 Range $36.06 - $39.67

Q1 2014

Shares 160,316 Value ($000) $9,101 Avg Close $35.76 Range $32.43 - $37.92

Q4 2013

Shares 195,671 Value ($000) $9,793 Avg Close $31.29 Range $29.09 - $32.94

Q3 2013

Shares 195,676 Value ($000) $9,316 Avg Close $30.97 Range $29.74 - $31.75

Q2 2013

Shares 190,063 Value ($000) $8,828 Avg Close $30.02 Range $28.02 - $32.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	64,973	$6,839	$93.24	$81.31 - $107.59
Q3 2025	63,058	$5,292	$81.01	$75.27 - $86.24
Q2 2025	69,199	$5,478	$77.39	$71.26 - $87.25
Q1 2025	72,630	$6,519	$90.12	$78.10 - $99.24
Q4 2024	79,163	$7,875	$98.70	$90.33 - $109.75
Q3 2024	80,943	$9,192	$112.96	$105.16 - $123.40
Q2 2024	76,771	$9,504	$121.72	$114.80 - $127.87
Q1 2024	79,551	$10,497	$115.77	$102.41 - $125.66
Q4 2023	82,490	$8,993	$96.81	$92.34 - $102.48
Q3 2023	92,215	$9,494	$99.84	$95.67 - $106.04
Q2 2023	121,795	$14,054	$104.47	$97.02 - $109.95
Q1 2023	128,440	$13,665	$98.68	$92.86 - $105.40
Q4 2022	164,285	$18,227	$92.80	$77.99 - $103.03
Q3 2022	172,885	$14,889	$80.41	$76.51 - $85.75
Q2 2022	175,625	$16,012	$79.21	$72.83 - $86.09
Q1 2022	177,563	$14,569	$69.85	$64.44 - $74.38
Q4 2021	176,933	$13,560	$69.89	$62.63 - $80.06
Q3 2021	179,596	$13,489	$66.14	$62.09 - $68.78
Q2 2021	188,821	$14,685	$64.14	$59.83 - $67.79
Q1 2021	192,075	$14,807	$63.06	$58.39 - $69.69
Q4 2020	119,897	$9,808	$64.85	$59.73 - $68.80
Q3 2020	96,524	$8,007	$65.93	$60.98 - $70.41
Q2 2020	38,490	$2,976	$62.87	$58.07 - $67.36
Q1 2020	81,903	$6,302	$65.09	$51.91 - $72.71
Q4 2019	74,441	$6,770	$67.55	$62.89 - $73.10
Q3 2019	67,206	$5,657	$65.47	$61.22 - $68.01
Q2 2019	71,256	$5,975	$62.14	$55.86 - $67.34
Q1 2019	103,941	$8,645	$60.29	$55.35 - $64.55
Q4 2018	106,291	$8,122	$56.50	$50.42 - $61.17
Q3 2018	107,250	$7,608	$50.65	$45.40 - $54.60
Q2 2018	103,250	$6,267	$44.52	$39.72 - $47.34
Q1 2018	107,759	$5,870	$42.25	$39.59 - $47.54
Q4 2017	107,702	$6,060	$43.00	$39.63 - $47.96
Q3 2017	101,905	$6,525	$46.68	$44.87 - $49.08
Q2 2017	105,805	$6,781	$46.54	$45.06 - $48.72
Q1 2017	105,805	$6,723	$46.06	$42.70 - $48.31
Q4 2016	106,605	$6,276	$44.08	$41.83 - $46.98
Q3 2016	107,405	$6,703	$43.73	$40.74 - $45.59
Q2 2016	113,505	$6,539	$39.48	$37.06 - $41.09
Q1 2016	118,145	$6,251	$36.03	$33.60 - $37.88
Q4 2015	139,615	$7,374	$36.77	$33.58 - $38.73
Q3 2015	142,715	$7,049	$38.40	$31.46 - $41.36
Q2 2015	148,540	$8,456	$40.23	$38.42 - $42.17
Q1 2015	160,943	$9,251	$40.30	$37.94 - $43.13
Q4 2014	144,408	$8,201	$39.35	$35.32 - $41.85
Q3 2014	162,706	$9,645	$39.37	$37.12 - $41.03
Q2 2014	160,316	$9,274	$37.96	$36.06 - $39.67
Q1 2014	160,316	$9,101	$35.76	$32.43 - $37.92
Q4 2013	195,671	$9,793	$31.29	$29.09 - $32.94
Q3 2013	195,676	$9,316	$30.97	$29.74 - $31.75
Q2 2013	190,063	$8,828	$30.02	$28.02 - $32.11