MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

LOOMIS SAYLES & CO L P's Holding History (CIK: 0000312348)

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

Q4 2025

Shares 155,310 Value ($000) $16,348 Avg Close $93.24 Range $81.31 - $107.59

Q3 2025

Shares 209,511 Value ($000) $17,584 Avg Close $81.01 Range $75.27 - $86.24

Q2 2025

Shares 231,592 Value ($000) $18,333 Avg Close $77.39 Range $71.26 - $87.25

Q1 2025

Shares 182,382 Value ($000) $16 Avg Close $90.12 Range $78.10 - $99.24

Q4 2024

Shares 187,219 Value ($000) $19 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 131,424 Value ($000) $15 Avg Close $112.96 Range $105.16 - $123.40

Q2 2024

Shares 74,929 Value ($000) $9 Avg Close $121.72 Range $114.80 - $127.87

Q1 2024

Shares 37,166 Value ($000) $5 Avg Close $115.77 Range $102.41 - $125.66

Q4 2023

Shares 41,972 Value ($000) $5 Avg Close $96.81 Range $92.34 - $102.48

Q3 2023

Shares 8,862 Value ($000) $1 Avg Close $99.84 Range $95.67 - $106.04

Q2 2023

Shares 11,449 Value ($000) $1 Avg Close $104.47 Range $97.02 - $109.95

Q1 2023

Shares 46,449 Value ($000) $5 Avg Close $98.68 Range $92.86 - $105.40

Q4 2022

Shares 49,843 Value ($000) $6 Avg Close $92.80 Range $77.99 - $103.03

Q3 2022

Shares 48,696 Value ($000) $4,194 Avg Close $80.41 Range $76.51 - $85.75

Q2 2022

Shares 373,691 Value ($000) $34,069 Avg Close $79.21 Range $72.83 - $86.09

Q1 2022

Shares 599,333 Value ($000) $49,175 Avg Close $69.85 Range $64.44 - $74.38

Q4 2021

Shares 412,857 Value ($000) $31,641 Avg Close $69.89 Range $62.63 - $80.06

Q3 2021

Shares 587,718 Value ($000) $44,144 Avg Close $66.14 Range $62.09 - $68.78

Q2 2021

Shares 530,635 Value ($000) $41,267 Avg Close $64.14 Range $59.83 - $67.79

Q1 2021

Shares 599,532 Value ($000) $46,218 Avg Close $63.06 Range $58.39 - $69.69

Q4 2020

Shares 140,305 Value ($000) $11,477 Avg Close $64.85 Range $59.73 - $68.80

Q3 2020

Shares 13,394 Value ($000) $1,111 Avg Close $65.93 Range $60.98 - $70.41

Q2 2020

Shares 14,420 Value ($000) $1,115 Avg Close $62.87 Range $58.07 - $67.36

Q1 2020

Shares 5,586,463 Value ($000) $429,822 Avg Close $65.09 Range $51.91 - $72.71

Q4 2019

Shares 5,890,770 Value ($000) $535,765 Avg Close $67.55 Range $62.89 - $73.10

Q3 2019

Shares 5,687,296 Value ($000) $478,757 Avg Close $65.47 Range $61.22 - $68.01

Q2 2019

Shares 5,636,433 Value ($000) $472,615 Avg Close $62.14 Range $55.86 - $67.34

Q1 2019

Shares 5,634,416 Value ($000) $468,615 Avg Close $60.29 Range $55.35 - $64.55

Q4 2018

Shares 5,598,675 Value ($000) $427,794 Avg Close $56.50 Range $50.42 - $61.17

Q3 2018

Shares 5,902,623 Value ($000) $418,732 Avg Close $50.65 Range $45.40 - $54.60

Q2 2018

Shares 6,014,396 Value ($000) $365,074 Avg Close $44.52 Range $39.72 - $47.34

Q1 2018

Shares 5,986,197 Value ($000) $326,068 Avg Close $42.25 Range $39.59 - $47.54

Q4 2017

Shares 5,973,569 Value ($000) $336,133 Avg Close $43.00 Range $39.63 - $47.96

Q3 2017

Shares 5,930,104 Value ($000) $379,704 Avg Close $46.68 Range $44.87 - $49.08

Q2 2017

Shares 5,860,853 Value ($000) $375,622 Avg Close $46.54 Range $45.06 - $48.72

Q1 2017

Shares 5,781,930 Value ($000) $367,383 Avg Close $46.06 Range $42.70 - $48.31

Q4 2016

Shares 6,036,704 Value ($000) $355,381 Avg Close $44.08 Range $41.83 - $46.98

Q3 2016

Shares 5,850,819 Value ($000) $365,149 Avg Close $43.73 Range $40.74 - $45.59

Q2 2016

Shares 5,757,219 Value ($000) $331,674 Avg Close $39.48 Range $37.06 - $41.09

Q1 2016

Shares 5,622,624 Value ($000) $297,493 Avg Close $36.03 Range $33.60 - $37.88

Q4 2015

Shares 5,334,621 Value ($000) $281,775 Avg Close $36.77 Range $33.58 - $38.73

Q3 2015

Shares 5,012,451 Value ($000) $247,565 Avg Close $38.40 Range $31.46 - $41.36

Q2 2015

Shares 4,677,427 Value ($000) $266,285 Avg Close $40.23 Range $38.42 - $42.17

Q1 2015

Shares 4,262,968 Value ($000) $245,035 Avg Close $40.30 Range $37.94 - $43.13

Q4 2014

Shares 4,130,239 Value ($000) $234,557 Avg Close $39.35 Range $35.32 - $41.85

Q3 2014

Shares 4,240,559 Value ($000) $251,380 Avg Close $39.37 Range $37.12 - $41.03

Q2 2014

Shares 4,287,351 Value ($000) $248,023 Avg Close $37.96 Range $36.06 - $39.67

Q1 2014

Shares 4,929,791 Value ($000) $279,865 Avg Close $35.76 Range $32.43 - $37.92

Q4 2013

Shares 4,287,385 Value ($000) $214,583 Avg Close $31.29 Range $29.09 - $32.94

Q3 2013

Shares 4,341,187 Value ($000) $206,684 Avg Close $30.97 Range $29.74 - $31.75

Q2 2013

Shares 3,380,178 Value ($000) $157,010 Avg Close $30.02 Range $28.02 - $32.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	155,310	$16,348	$93.24	$81.31 - $107.59
Q3 2025	209,511	$17,584	$81.01	$75.27 - $86.24
Q2 2025	231,592	$18,333	$77.39	$71.26 - $87.25
Q1 2025	182,382	$16	$90.12	$78.10 - $99.24
Q4 2024	187,219	$19	$98.70	$90.33 - $109.75
Q3 2024	131,424	$15	$112.96	$105.16 - $123.40
Q2 2024	74,929	$9	$121.72	$114.80 - $127.87
Q1 2024	37,166	$5	$115.77	$102.41 - $125.66
Q4 2023	41,972	$5	$96.81	$92.34 - $102.48
Q3 2023	8,862	$1	$99.84	$95.67 - $106.04
Q2 2023	11,449	$1	$104.47	$97.02 - $109.95
Q1 2023	46,449	$5	$98.68	$92.86 - $105.40
Q4 2022	49,843	$6	$92.80	$77.99 - $103.03
Q3 2022	48,696	$4,194	$80.41	$76.51 - $85.75
Q2 2022	373,691	$34,069	$79.21	$72.83 - $86.09
Q1 2022	599,333	$49,175	$69.85	$64.44 - $74.38
Q4 2021	412,857	$31,641	$69.89	$62.63 - $80.06
Q3 2021	587,718	$44,144	$66.14	$62.09 - $68.78
Q2 2021	530,635	$41,267	$64.14	$59.83 - $67.79
Q1 2021	599,532	$46,218	$63.06	$58.39 - $69.69
Q4 2020	140,305	$11,477	$64.85	$59.73 - $68.80
Q3 2020	13,394	$1,111	$65.93	$60.98 - $70.41
Q2 2020	14,420	$1,115	$62.87	$58.07 - $67.36
Q1 2020	5,586,463	$429,822	$65.09	$51.91 - $72.71
Q4 2019	5,890,770	$535,765	$67.55	$62.89 - $73.10
Q3 2019	5,687,296	$478,757	$65.47	$61.22 - $68.01
Q2 2019	5,636,433	$472,615	$62.14	$55.86 - $67.34
Q1 2019	5,634,416	$468,615	$60.29	$55.35 - $64.55
Q4 2018	5,598,675	$427,794	$56.50	$50.42 - $61.17
Q3 2018	5,902,623	$418,732	$50.65	$45.40 - $54.60
Q2 2018	6,014,396	$365,074	$44.52	$39.72 - $47.34
Q1 2018	5,986,197	$326,068	$42.25	$39.59 - $47.54
Q4 2017	5,973,569	$336,133	$43.00	$39.63 - $47.96
Q3 2017	5,930,104	$379,704	$46.68	$44.87 - $49.08
Q2 2017	5,860,853	$375,622	$46.54	$45.06 - $48.72
Q1 2017	5,781,930	$367,383	$46.06	$42.70 - $48.31
Q4 2016	6,036,704	$355,381	$44.08	$41.83 - $46.98
Q3 2016	5,850,819	$365,149	$43.73	$40.74 - $45.59
Q2 2016	5,757,219	$331,674	$39.48	$37.06 - $41.09
Q1 2016	5,622,624	$297,493	$36.03	$33.60 - $37.88
Q4 2015	5,334,621	$281,775	$36.77	$33.58 - $38.73
Q3 2015	5,012,451	$247,565	$38.40	$31.46 - $41.36
Q2 2015	4,677,427	$266,285	$40.23	$38.42 - $42.17
Q1 2015	4,262,968	$245,035	$40.30	$37.94 - $43.13
Q4 2014	4,130,239	$234,557	$39.35	$35.32 - $41.85
Q3 2014	4,240,559	$251,380	$39.37	$37.12 - $41.03
Q2 2014	4,287,351	$248,023	$37.96	$36.06 - $39.67
Q1 2014	4,929,791	$279,865	$35.76	$32.43 - $37.92
Q4 2013	4,287,385	$214,583	$31.29	$29.09 - $32.94
Q3 2013	4,341,187	$206,684	$30.97	$29.74 - $31.75
Q2 2013	3,380,178	$157,010	$30.02	$28.02 - $32.11