Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionSentinel Trust Co Lba
Latest Disclosed Ownership16,981 shares
Latest Disclosed Value $ 2,043
Sentinel Trust Co Lba ownership in MRK / Merck & Co., Inc.

On May 7, 2026 - Sentinel Trust Co Lba filed a 13F-HR form disclosing ownership of 16,981 shares of Merck & Co., Inc. (MX:MRK) valued at $2,043 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 16,981 shares of Merck & Co., Inc.. This represents a change in shares of 0.00% during the quarter.

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 Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F Merck COM 58933Y105 16,981 0 0.00 2 100.00 0.2029
2026-01-29 2025-12-31 13F Merck COM 58933Y105 16,981 0 0.00 2 0.00 0.1760
2025-11-04 2025-09-30 13F Merck COM 58933Y105 16,981 -33 -0.19 1 0.00 0.1452
2025-07-31 2025-06-30 13F Merck COM 58933Y105 17,014 10 0.06 1 0.00 0.1463
2025-05-01 2025-03-31 13F Merck COM 58933Y105 17,004 -749 -4.22 2 0.00 0.1800
2025-02-05 2024-12-31 13F Merck COM 58933Y105 17,753 -2,551 -12.56 2 -50.00 0.2027
2024-10-15 2024-09-30 13F Merck COM 58933Y105 20,304 -950 -4.47 2 0.00 0.2626
2024-08-13 2024-06-30 13F Merck COM 58933Y105 21,254 209 0.99 3 0.00 0.3234
2024-05-15 2024-03-31 13F Merck COM 58933Y105 21,045 3,000 16.63 3 100.00 0.3588
2024-02-13 2023-12-31 13F Merck COM 58933Y105 18,045 0 0.00 2 0.00 0.2584
2023-11-14 2023-09-30 13F Merck COM 58933Y105 18,045 0 0.00 2 -50.00 0.2633
2023-08-03 2023-06-30 13F Merck COM 58933Y105 18,045 0 0.00 2 100.00 0.2831
2023-05-05 2023-03-31 13F Merck COM 58933Y105 18,045 18,045 2 0.2728
2019-05-15 2019-03-31 13F Merck COM 58933Y105 0 -4,652 -100.00 0 -100.00
2019-02-15 2018-12-31 13F Merck COM 58933Y105 4,652 -36,590 -88.72 356 -87.83 0.1098
2018-11-15 2018-09-30 13F Merck COM 58933Y105 41,242 -10,540 -20.35 2,926 -6.90 0.6346
2018-08-15 2018-06-30 13F Merck COM 58933Y105 51,782 9,470 22.38 3,143 36.36 0.7027
2018-05-16 2018-03-31 13F Merck COM 58933Y105 42,312 8,510 25.18 2,305 21.19 0.4868
2018-02-14 2017-12-31 13F Merck COM 58933Y105 33,802 33,802 1,902 0.3951
2017-10-12 2017-09-30 13F Merck COM 58933Y105 0 -8,716 -100.00 0 -100.00
2017-07-19 2017-06-30 13F Merck COM 58933Y105 8,716 -16,980 -66.08 559 -65.75 0.0913
2017-05-01 2017-03-31 13F Merck COM 58933Y105 25,696 -25,322 -49.63 1,632 -45.65 0.2581
2017-01-03 2016-12-31 13F Merck COM 58933Y105 51,018 -2,783 -5.17 3,003 -10.57 0.4375
2016-11-14 2016-09-30 13F Merck COM 58933Y105 53,801 -457 -0.84 3,358 7.46 0.4854
2016-07-18 2016-06-30 13F Merck COM 58933Y105 54,258 -3,595 -6.21 3,125 2.09 0.4455
2016-04-13 2016-03-31 13F Merck COM 58933Y105 57,853 46,392 404.78 3,061 405.95 0.4498
2016-02-08 2015-12-31 13F Merck COM 58933Y105 11,461 5,636 96.76 605 110.80 0.0918
2015-11-04 2015-09-30 13F Merck COM 58933Y105 5,825 -70 -1.19 287 -14.58 0.0434
2015-07-08 2015-06-30 13F Merck COM 58933Y105 5,895 -367 -5.86 336 -6.67 0.0904
2015-04-10 2015-03-31 13F Merck COM 58933Y105 6,262 -143 -2.23 360 -1.10 0.0990
2015-02-12 2014-12-31 13F Merck COM 58933Y105 6,405 -1,675 -20.73 364 -24.01 0.1031
2014-11-06 2014-09-30 13F Merck COM 58933Y105 8,080 -2,952 -26.76 479 -24.92 0.1234
2014-07-28 2014-06-30 13F Merck COM 58933Y105 11,032 -13,831 -55.63 638 -54.82 0.1654
2014-04-09 2014-03-31 13F Merck COM 58933Y105 24,863 -30,717 -55.27 1,412 -49.23 0.3952
2014-02-05 2013-12-31 13F Merck COM 58933Y105 55,580 1,517 2.81 2,781 8.04 0.7694
2013-10-10 2013-09-30 13F Merck COM 58933Y105 54,063 50 0.09 2,574 2.59 0.7690
2013-07-23 2013-06-30 13F Merck COM 58933Y105 54,013 54,013 2,509 0.7537
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.