MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

Weiss Asset Management LP's Holding History (CIK: 0001357550)

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

Q4 2025

Shares 28,117 Value ($000) $2,960 Avg Close $93.24 Range $81.31 - $107.59

Q2 2025

Shares 447,390 Value ($000) $35,415 Avg Close $77.39 Range $71.26 - $87.25

Q4 2024

Shares 249,608 Value ($000) $24,831 Avg Close $98.70 Range $90.33 - $109.75

Q3 2024

Shares 89,271 Value ($000) $10,138 Avg Close $112.96 Range $105.16 - $123.40

Q4 2023

Shares 49,589 Value ($000) $5,406 Avg Close $96.81 Range $92.34 - $102.48

Q2 2021

Shares 94,025 Value ($000) $7,312 Avg Close $64.14 Range $59.83 - $67.79

Q4 2019

Shares 2,752 Value ($000) $250 Avg Close $67.55 Range $62.89 - $73.10

Q3 2019

Shares 2,889 Value ($000) $243 Avg Close $65.47 Range $61.22 - $68.01

Q2 2019

Shares 2,548 Value ($000) $214 Avg Close $62.14 Range $55.86 - $67.34

Q1 2019

Shares 2,479 Value ($000) $206 Avg Close $60.29 Range $55.35 - $64.55

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	28,117	$2,960	$93.24	$81.31 - $107.59
Q2 2025	447,390	$35,415	$77.39	$71.26 - $87.25
Q4 2024	249,608	$24,831	$98.70	$90.33 - $109.75
Q3 2024	89,271	$10,138	$112.96	$105.16 - $123.40
Q4 2023	49,589	$5,406	$96.81	$92.34 - $102.48
Q2 2021	94,025	$7,312	$64.14	$59.83 - $67.79
Q4 2019	2,752	$250	$67.55	$62.89 - $73.10
Q3 2019	2,889	$243	$65.47	$61.22 - $68.01
Q2 2019	2,548	$214	$62.14	$55.86 - $67.34
Q1 2019	2,479	$206	$60.29	$55.35 - $64.55