MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

BLACKHILL CAPITAL INC's Holding History (CIK: 0000872162)

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

Q4 2025

Shares 168,857 Value ($000) $17,774 Avg Close $93.24 Range $81.31 - $107.59

Q3 2025

Shares 168,857 Value ($000) $14,172 Avg Close $81.01 Range $75.27 - $86.24

Q2 2025

Shares 176,707 Value ($000) $13,988 Avg Close $77.39 Range $71.26 - $87.25

Q1 2025

Shares 204,607 Value ($000) $18,366 Avg Close $90.12 Range $78.10 - $99.24

Q4 2024

Shares 205,807 Value ($000) $20,474 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 208,500 Value ($000) $23,677 Avg Close $112.96 Range $105.16 - $123.40

Q2 2024

Shares 208,500 Value ($000) $25,812 Avg Close $121.72 Range $114.80 - $127.87

Q1 2024

Shares 208,500 Value ($000) $27,512 Avg Close $115.77 Range $102.41 - $125.66

Q4 2023

Shares 208,500 Value ($000) $22,731 Avg Close $96.81 Range $92.34 - $102.48

Q3 2023

Shares 208,500 Value ($000) $21,465 Avg Close $99.84 Range $95.67 - $106.04

Q2 2023

Shares 222,500 Value ($000) $25,674 Avg Close $104.47 Range $97.02 - $109.95

Q1 2023

Shares 225,100 Value ($000) $23,948 Avg Close $98.68 Range $92.86 - $105.40

Q4 2022

Shares 216,600 Value ($000) $24,032 Avg Close $92.80 Range $77.99 - $103.03

Q3 2022

Shares 209,250 Value ($000) $18,021 Avg Close $80.41 Range $76.51 - $85.75

Q2 2022

Shares 171,050 Value ($000) $15,595 Avg Close $79.21 Range $72.83 - $86.09

Q1 2022

Shares 172,450 Value ($000) $14,150 Avg Close $69.85 Range $64.44 - $74.38

Q4 2021

Shares 169,250 Value ($000) $12,971 Avg Close $69.89 Range $62.63 - $80.06

Q3 2021

Shares 169,250 Value ($000) $12,712 Avg Close $66.14 Range $62.09 - $68.78

Q2 2021

Shares 281,250 Value ($000) $21,873 Avg Close $64.14 Range $59.83 - $67.79

Q1 2021

Shares 287,250 Value ($000) $22,144 Avg Close $63.06 Range $58.39 - $69.69

Q4 2020

Shares 290,250 Value ($000) $23,742 Avg Close $64.85 Range $59.73 - $68.80

Q3 2020

Shares 245,450 Value ($000) $20,360 Avg Close $65.93 Range $60.98 - $70.41

Q2 2020

Shares 249,650 Value ($000) $19,305 Avg Close $62.87 Range $58.07 - $67.36

Q1 2020

Shares 251,050 Value ($000) $19,316 Avg Close $65.09 Range $51.91 - $72.71

Q4 2019

Shares 255,050 Value ($000) $23,197 Avg Close $67.55 Range $62.89 - $73.10

Q3 2019

Shares 243,350 Value ($000) $20,485 Avg Close $65.47 Range $61.22 - $68.01

Q2 2019

Shares 244,950 Value ($000) $20,539 Avg Close $62.14 Range $55.86 - $67.34

Q1 2019

Shares 244,950 Value ($000) $20,372 Avg Close $60.29 Range $55.35 - $64.55

Q4 2018

Shares 244,250 Value ($000) $18,663 Avg Close $56.50 Range $50.42 - $61.17

Q3 2018

Shares 244,050 Value ($000) $17,313 Avg Close $50.65 Range $45.40 - $54.60

Q2 2018

Shares 223,550 Value ($000) $13,569 Avg Close $44.52 Range $39.72 - $47.34

Q1 2018

Shares 227,750 Value ($000) $12,406 Avg Close $42.25 Range $39.59 - $47.54

Q4 2017

Shares 198,200 Value ($000) $11,153 Avg Close $43.00 Range $39.63 - $47.96

Q3 2017

Shares 159,400 Value ($000) $10,206 Avg Close $46.68 Range $44.87 - $49.08

Q2 2017

Shares 157,500 Value ($000) $10,094 Avg Close $46.54 Range $45.06 - $48.72

Q1 2017

Shares 5,000 Value ($000) $318 Avg Close $46.06 Range $42.70 - $48.31

Q4 2016

Shares 6,288 Value ($000) $370 Avg Close $44.08 Range $41.83 - $46.98

Q3 2016

Shares 6,288 Value ($000) $392 Avg Close $43.73 Range $40.74 - $45.59

Q2 2016

Shares 6,288 Value ($000) $362 Avg Close $39.48 Range $37.06 - $41.09

Q1 2016

Shares 6,288 Value ($000) $333 Avg Close $36.03 Range $33.60 - $37.88

Q4 2015

Shares 6,288 Value ($000) $332 Avg Close $36.77 Range $33.58 - $38.73

Q3 2015

Shares 6,288 Value ($000) $311 Avg Close $38.40 Range $31.46 - $41.36

Q2 2015

Shares 6,288 Value ($000) $358 Avg Close $40.23 Range $38.42 - $42.17

Q1 2015

Shares 6,288 Value ($000) $361 Avg Close $40.30 Range $37.94 - $43.13

Q4 2014

Shares 6,288 Value ($000) $357 Avg Close $39.35 Range $35.32 - $41.85

Q3 2014

Shares 5,000 Value ($000) $296 Avg Close $39.37 Range $37.12 - $41.03

Q2 2014

Shares 5,000 Value ($000) $289 Avg Close $37.96 Range $36.06 - $39.67

Q1 2014

Shares 5,000 Value ($000) $284 Avg Close $35.76 Range $32.43 - $37.92

Q4 2013

Shares 5,000 Value ($000) $250 Avg Close $31.29 Range $29.09 - $32.94

Q3 2013

Shares 5,000 Value ($000) $238 Avg Close $30.97 Range $29.74 - $31.75

Q2 2013

Shares 5,000 Value ($000) $232 Avg Close $30.02 Range $28.02 - $32.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	168,857	$17,774	$93.24	$81.31 - $107.59
Q3 2025	168,857	$14,172	$81.01	$75.27 - $86.24
Q2 2025	176,707	$13,988	$77.39	$71.26 - $87.25
Q1 2025	204,607	$18,366	$90.12	$78.10 - $99.24
Q4 2024	205,807	$20,474	$98.70	$90.33 - $109.75
Q3 2024	208,500	$23,677	$112.96	$105.16 - $123.40
Q2 2024	208,500	$25,812	$121.72	$114.80 - $127.87
Q1 2024	208,500	$27,512	$115.77	$102.41 - $125.66
Q4 2023	208,500	$22,731	$96.81	$92.34 - $102.48
Q3 2023	208,500	$21,465	$99.84	$95.67 - $106.04
Q2 2023	222,500	$25,674	$104.47	$97.02 - $109.95
Q1 2023	225,100	$23,948	$98.68	$92.86 - $105.40
Q4 2022	216,600	$24,032	$92.80	$77.99 - $103.03
Q3 2022	209,250	$18,021	$80.41	$76.51 - $85.75
Q2 2022	171,050	$15,595	$79.21	$72.83 - $86.09
Q1 2022	172,450	$14,150	$69.85	$64.44 - $74.38
Q4 2021	169,250	$12,971	$69.89	$62.63 - $80.06
Q3 2021	169,250	$12,712	$66.14	$62.09 - $68.78
Q2 2021	281,250	$21,873	$64.14	$59.83 - $67.79
Q1 2021	287,250	$22,144	$63.06	$58.39 - $69.69
Q4 2020	290,250	$23,742	$64.85	$59.73 - $68.80
Q3 2020	245,450	$20,360	$65.93	$60.98 - $70.41
Q2 2020	249,650	$19,305	$62.87	$58.07 - $67.36
Q1 2020	251,050	$19,316	$65.09	$51.91 - $72.71
Q4 2019	255,050	$23,197	$67.55	$62.89 - $73.10
Q3 2019	243,350	$20,485	$65.47	$61.22 - $68.01
Q2 2019	244,950	$20,539	$62.14	$55.86 - $67.34
Q1 2019	244,950	$20,372	$60.29	$55.35 - $64.55
Q4 2018	244,250	$18,663	$56.50	$50.42 - $61.17
Q3 2018	244,050	$17,313	$50.65	$45.40 - $54.60
Q2 2018	223,550	$13,569	$44.52	$39.72 - $47.34
Q1 2018	227,750	$12,406	$42.25	$39.59 - $47.54
Q4 2017	198,200	$11,153	$43.00	$39.63 - $47.96
Q3 2017	159,400	$10,206	$46.68	$44.87 - $49.08
Q2 2017	157,500	$10,094	$46.54	$45.06 - $48.72
Q1 2017	5,000	$318	$46.06	$42.70 - $48.31
Q4 2016	6,288	$370	$44.08	$41.83 - $46.98
Q3 2016	6,288	$392	$43.73	$40.74 - $45.59
Q2 2016	6,288	$362	$39.48	$37.06 - $41.09
Q1 2016	6,288	$333	$36.03	$33.60 - $37.88
Q4 2015	6,288	$332	$36.77	$33.58 - $38.73
Q3 2015	6,288	$311	$38.40	$31.46 - $41.36
Q2 2015	6,288	$358	$40.23	$38.42 - $42.17
Q1 2015	6,288	$361	$40.30	$37.94 - $43.13
Q4 2014	6,288	$357	$39.35	$35.32 - $41.85
Q3 2014	5,000	$296	$39.37	$37.12 - $41.03
Q2 2014	5,000	$289	$37.96	$36.06 - $39.67
Q1 2014	5,000	$284	$35.76	$32.43 - $37.92
Q4 2013	5,000	$250	$31.29	$29.09 - $32.94
Q3 2013	5,000	$238	$30.97	$29.74 - $31.75
Q2 2013	5,000	$232	$30.02	$28.02 - $32.11