Rockland Trust Co reports 7.35% decrease in ownership of 6MK / Merck & Co., Inc.

Merck & Co., Inc.

DE ˙ XTRA ˙ US58933Y1055

102,78 € ↑2,84 (2,84%)

2026-06-04
AKTIENPREIS

Security	DE:6MK / Merck & Co., Inc.
Institution	Rockland Trust Co
Latest Disclosed Ownership	534,963 shares
Latest Disclosed Value	$ 64,350,700

On April 16, 2026 - Rockland Trust Co filed a 13F-HR form disclosing ownership of 534,963 shares of Merck & Co., Inc. (DE:6MK) valued at $55,743,145 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 15, 2026 disclosing 577,430 shares of Merck & Co., Inc.. This represents a change in shares of -7.35% during the quarter. The current value of the position is $54,983,497 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)

File Date	Effective Date	Form	Security	Class	ID	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-04-16	2026-03-31	13F	MERCK	COM	58933Y105	534,963	-42,467	-7.35	64,351	5.87	2.4020
2026-01-15	2025-12-31	13F	MERCK	COM	58933Y105	577,430	-2,909	-0.50	60,780	24.79	2.3934
2025-11-06	2025-09-30	13F	MERCK	COM	58933Y105	580,339	30,061	5.46	48,708	11.82	1.9961
2025-07-10	2025-06-30	13F	MERCK	COM	58933Y105	550,278	57,044	11.57	43,560	-1.61	2.1212
2025-04-16	2025-03-31	13F	MERCK	COM	58933Y105	493,234	76,223	18.28	44,273	6.72	2.2254
2025-01-14	2024-12-31	13F	Merck	COM	58933Y105	417,011	30,562	7.91	41,484	-5.47	2.1093
2024-10-03	2024-09-30	13F	Merck	COM	58933Y105	386,449	-14,917	-3.72	43,885	-11.68	2.1596
2024-07-23	2024-06-30	13F	Merck	COM	58933Y105	401,366	-6,299	-1.55	49,689	-7.63	2.6196
2024-04-11	2024-03-31	13F	Merck	COM	58933Y105	407,665	-814	-0.20	53,791	20.79	2.8342
2024-01-11	2023-12-31	13F	Merck	COM	58933Y105	408,479	11,868	2.99	44,532	9.06	2.4375
2023-10-26	2023-09-30	13F	Merck	COM	58933Y105	396,611	23,808	6.39	40,831	-5.08	2.4576
2023-07-27	2023-06-30	13F	Merck	COM	58933Y105	372,803	-36,018	-8.81	43,018	-1.10	2.5704
2023-04-24	2023-03-31	13F	Merck	COM	58933Y105	408,821	-1,628	-0.40	43,494	96,553.33	2.7330
2023-01-24	2022-12-31	13F	Merck	COM	58933Y105	410,449	-9,567	-2.28	46	-99.88	2.8929
2022-10-19	2022-09-30	13F	Merck	COM	58933Y105	420,016	4,214	1.01	36,171	-4.58	2.5805
2022-07-13	2022-06-30	13F	Merck	COM	58933Y105	415,802	4,458	1.08	37,909	12.32	2.6213
2022-04-18	2022-03-31	13F	Merck	COM	58933Y105	411,344	34,038	9.02	33,750	16.72	2.1478
2022-01-27	2021-12-31	13F	Merck	COM	58933Y105	377,306	15,836	4.38	28,916	6.50	1.8419
2021-10-25	2021-09-30	13F	Merck	COM	58933Y105	361,470	76,373	26.79	27,150	22.45	1.8936
2021-07-21	2021-06-30	13F	Merck	COM	58933Y105	285,097	152,982	115.79	22,172	117.69	1.5326
2021-04-22	2021-03-31	13F	Merck	COM	58933Y105	132,115	13,485	11.37	10,185	4.96	0.7334
2021-01-04	2020-12-31	13F	Merck	COM	58933Y105	118,630	12,887	12.19	9,704	10.62	0.7537
2020-10-08	2020-09-30	13F	Merck	COM	58933Y105	105,743	-1,355	-1.27	8,772	5.92	0.7536
2020-07-09	2020-06-30	13F	Merck	COM	58933Y105	107,098	-1,030	-0.95	8,282	-0.46	0.7442
2020-04-16	2020-03-31	13F	Merck	COM	58933Y105	108,128	3,884	3.73	8,320	-12.25	0.8470
2020-01-06	2019-12-31	13F	Merck	COM	58933Y105	104,244	-3,266	-3.04	9,481	6.58	0.7808
2019-10-11	2019-09-30	13F	Merck	COM	58933Y105	107,510	33,975	46.20	8,896	44.28	0.8088
2019-07-05	2019-06-30	13F	MERCK	COMMON STOCK	58933Y105	73,535	1,337	1.85	6,166	2.70	0.6111
2019-04-08	2019-03-31	13F	MERCK	COMMON STOCK	58933Y105	72,198	9,573	15.29	6,004	25.48	0.6365
2019-01-16	2018-12-31	13F	MERCK	COMMON STOCK	58933Y105	62,625	-2,047	-3.17	4,785	4.29	0.5869
2018-10-05	2018-09-30	13F	MERCK	COMMON STOCK	58933Y105	64,672	-385	-0.59	4,588	16.18	0.5606
2018-07-06	2018-06-30	13F	MERCK	COMMON STOCK	58933Y105	65,057	-558	-0.85	3,949	10.49	0.5101
2018-04-10	2018-03-31	13F	MERCK	COMMON STOCK	58933Y105	65,615	2,340	3.70	3,574	0.39	0.4724
2018-01-11	2017-12-31	13F	MERCK	COMMON STOCK	58933Y105	63,275	2,015	3.29	3,560	-9.23	0.4582
2017-11-01	2017-09-30	13F	MERCK	COMMON STOCK	58933Y105	61,260	2,445	4.16	3,922	4.06	0.5864
2017-08-01	2017-06-30	13F	MERCK	COMMON STOCK	58933Y105	58,815	2,815	5.03	3,769	5.93	0.5901
2017-04-20	2017-03-31	13F	MERCK	COMMON STOCK	58933Y105	56,000	176	0.32	3,558	8.28	0.5615
2017-01-30	2016-12-31	13F	MERCK	COMMON STOCK	58933Y105	55,824	-136	-0.24	3,286	-5.90	0.5264
2016-10-27	2016-09-30	13F	MERCK	COMMON STOCK	58933Y105	55,960	-261	-0.46	3,492	7.81	0.6050
2016-07-20	2016-06-30	13F/A-1	MERCK	COMMON STOCK	58933Y105	56,221	2,070	3.82	3,239	13.05	0.5603
2016-07-20	2016-06-30	13F	MERCK	COMMON STOCK	58933Y105	54,151			2,865
2016-05-04	2016-03-31	13F	MERCK	COMMON STOCK	58933Y105	54,151	4,380	8.80	2,865	8.98	0.5143
2016-01-28	2015-12-31	13F	MERCK	COMMON STOCK	58933Y105	49,771	5,739	13.03	2,629	20.87	0.4631
2015-10-28	2015-09-30	13F	MERCK	COMMON STOCK	58933Y105	44,032	1,508	3.55	2,175	-10.16	0.4273
2015-07-22	2015-06-30	13F	MERCK	COMMON STOCK	58933Y105	42,524	963	2.32	2,421	1.34	0.4806
2015-04-24	2015-03-31	13F	MERCK	COMMON STOCK	58933Y105	41,561	41,561	0.00	2,389		0.5052
2015-02-04	2014-12-31	13F	MERCK	COMMON STOCK	58933Y105	0	-39,401	-100.00	0	-100.00
2014-11-05	2014-09-30	13F	MERCK	COMMON STOCK	58933Y105	39,401	5,309	15.57	2,336	18.46	0.5144
2014-08-04	2014-06-30	13F	MERCK	COMMON STOCK	58933Y105	34,092	16,666	95.64	1,972	99.39	0.4478
2014-05-02	2014-03-31	13F	MERCK	COMMON STOCK	58933Y105	17,426	-16	-0.09	989	13.29	0.2325
2014-02-04	2013-12-31	13F	MERCK	COMMON STOCK	58933Y105	17,442	-1,379	-7.33	873	-2.57	0.2101
2013-11-12	2013-09-30	13F/A-1	MERCK	COMMON STOCK	58933Y105	18,821	222	1.19	896	3.70	0.2367
2013-10-21	2013-09-30	13F	MERCK	COMMON STOCK	58933Y105	18,821			896
2013-08-12	2013-06-30	13F	MERCK	COMMON STOCK	58933Y105	18,599	18,599		864		0.2393

Legend

Shares: The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value: The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price: The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class: This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred

Allocation (%): The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation: The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%): The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis: The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss: This is the market value of the position as of the effective date minus the cost basis.