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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
310158	Merck & Co. Inc.	MRK	Pharmaceutical Preparations (2834)	221918501

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1938322	Joseph Romanelli	Merck &Amp; Co., Inc. 126 East Lincoln Avenue Rahway NJ 07065	President, Human Health Int?L	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2022-12-02	59	$109.67	59	No	4	P	Indirect	By Spouse
Common Stock	Acquisiton	2022-12-05	107	$109.54	20,391	No	4	P	Direct
Common Stock	Acquisiton	2022-12-06	30	$109.39	20,421	No	4	P	Direct
Common Stock	Acquisiton	2022-12-13	56	$110.96	20,477	No	4	P	Direct
Common Stock	Acquisiton	2022-12-19	7	$109.04	20,484	No	4	P	Direct
Common Stock	Acquisiton	2023-02-21	11	$109.20	20,495	No	4	P	Direct
Common Stock	Acquisiton	2023-03-20	136	$105.47	20,631	No	4	P	Direct
Common Stock	Disposition	2023-03-24	35	$104.65	20,596	No	4	S	Direct
Common Stock	Acquisiton	2023-04-26	3	$113.68	20,599	No	4	P	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	By Spouse
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	S	Direct
No	4	P	Direct

Footnotes

None of the purchases or sales reported herein were directed by the reporting person, but were executed by a brokerage firm for the benefit of the reporting person's managed account, without the reporting person's knowledge. One of the reported transactions resulted in a short swing profit under Section 16(b) of the Securities Exchange Act of 1934, as amended ("Section 16(b)"), and the reporting person has disgorged $374.01 to the Issuer, which amount represents all profits related to these transactions in accordance with Section 16(b).