MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND's Holding History (CIK: 0001535845)

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

Q4 2025

Shares 934,119 Value ($000) $98,325 Avg Close $93.24 Range $81.31 - $107.59

Q3 2025

Shares 975,879 Value ($000) $81,906 Avg Close $81.01 Range $75.27 - $86.24

Q2 2025

Shares 258,570 Value ($000) $20,468 Avg Close $77.39 Range $71.26 - $87.25

Q1 2025

Shares 486,560 Value ($000) $43,674 Avg Close $90.12 Range $78.10 - $99.24

Q4 2024

Shares 2,365,200 Value ($000) $235,290 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 1,564,000 Value ($000) $177,608 Avg Close $112.96 Range $105.16 - $123.40

Q2 2024

Shares 1,058,000 Value ($000) $130,980 Avg Close $121.72 Range $114.80 - $127.87

Q1 2024

Shares 569,000 Value ($000) $75,080 Avg Close $115.77 Range $102.41 - $125.66

Q4 2023

Shares 875,200 Value ($000) $95,414 Avg Close $96.81 Range $92.34 - $102.48

Q3 2023

Shares 196,000 Value ($000) $20,178 Avg Close $99.84 Range $95.67 - $106.04

Q2 2023

Shares 596,000 Value ($000) $68,772 Avg Close $104.47 Range $97.02 - $109.95

Q1 2023

Shares 192,000 Value ($000) $20,427 Avg Close $98.68 Range $92.86 - $105.40

Q4 2022

Shares 192,000 Value ($000) $21,302 Avg Close $92.80 Range $77.99 - $103.03

Q3 2022

Shares 58,254 Value ($000) $5,017 Avg Close $80.41 Range $76.51 - $85.75

Q2 2022

Shares 64,450 Value ($000) $5,876 Avg Close $79.21 Range $72.83 - $86.09

Q1 2022

Shares 42,384 Value ($000) $3,478 Avg Close $69.85 Range $64.44 - $74.38

Q4 2021

Shares 692,839 Value ($000) $53,099 Avg Close $69.89 Range $62.63 - $80.06

Q3 2021

Shares 525,749 Value ($000) $39,489 Avg Close $66.14 Range $62.09 - $68.78

Q2 2021

Shares 1,014,051 Value ($000) $78,863 Avg Close $64.14 Range $59.83 - $67.79

Q1 2021

Shares 273,811 Value ($000) $21,108 Avg Close $63.06 Range $58.39 - $69.69

Q4 2020

Shares 651,450 Value ($000) $53,289 Avg Close $64.85 Range $59.73 - $68.80

Q3 2020

Shares 74,999 Value ($000) $6,221 Avg Close $65.93 Range $60.98 - $70.41

Q2 2020

Shares 22,959 Value ($000) $1,775 Avg Close $62.87 Range $58.07 - $67.36

Q1 2020

Shares 597,887 Value ($000) $46,001 Avg Close $65.09 Range $51.91 - $72.71

Q4 2019

Shares 1,045,363 Value ($000) $95,076 Avg Close $67.55 Range $62.89 - $73.10

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	934,119	$98,325	$93.24	$81.31 - $107.59
Q3 2025	975,879	$81,906	$81.01	$75.27 - $86.24
Q2 2025	258,570	$20,468	$77.39	$71.26 - $87.25
Q1 2025	486,560	$43,674	$90.12	$78.10 - $99.24
Q4 2024	2,365,200	$235,290	$98.70	$90.33 - $109.75
Q3 2024	1,564,000	$177,608	$112.96	$105.16 - $123.40
Q2 2024	1,058,000	$130,980	$121.72	$114.80 - $127.87
Q1 2024	569,000	$75,080	$115.77	$102.41 - $125.66
Q4 2023	875,200	$95,414	$96.81	$92.34 - $102.48
Q3 2023	196,000	$20,178	$99.84	$95.67 - $106.04
Q2 2023	596,000	$68,772	$104.47	$97.02 - $109.95
Q1 2023	192,000	$20,427	$98.68	$92.86 - $105.40
Q4 2022	192,000	$21,302	$92.80	$77.99 - $103.03
Q3 2022	58,254	$5,017	$80.41	$76.51 - $85.75
Q2 2022	64,450	$5,876	$79.21	$72.83 - $86.09
Q1 2022	42,384	$3,478	$69.85	$64.44 - $74.38
Q4 2021	692,839	$53,099	$69.89	$62.63 - $80.06
Q3 2021	525,749	$39,489	$66.14	$62.09 - $68.78
Q2 2021	1,014,051	$78,863	$64.14	$59.83 - $67.79
Q1 2021	273,811	$21,108	$63.06	$58.39 - $69.69
Q4 2020	651,450	$53,289	$64.85	$59.73 - $68.80
Q3 2020	74,999	$6,221	$65.93	$60.98 - $70.41
Q2 2020	22,959	$1,775	$62.87	$58.07 - $67.36
Q1 2020	597,887	$46,001	$65.09	$51.91 - $72.71
Q4 2019	1,045,363	$95,076	$67.55	$62.89 - $73.10