Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionLegacy Private Trust Co.
Latest Disclosed Ownership17,115 shares
Latest Disclosed Value $ 2,058,763
Legacy Private Trust Co. reports 5.82% decrease in ownership of MRK / Merck & Co., Inc.

On April 7, 2026 - Legacy Private Trust Co. filed a 13F-HR form disclosing ownership of 17,115 shares of Merck & Co., Inc. (MX:MRK) valued at $2,058,763 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 8, 2026 disclosing 18,173 shares of Merck & Co., Inc.. This represents a change in shares of -5.82% 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)
2026-04-07 2026-03-31 13F MERCK COM 58933Y105 17,115 -1,058 -5.82 2,059 7.64 0.0701
2026-01-08 2025-12-31 13F MERCK COM 58933Y105 18,173 -664 -3.52 1,913 21.01 0.1122
2025-10-08 2025-09-30 13F MERCK COM 58933Y105 18,837 -1,197 -5.97 1,581 -0.32 0.0942
2025-07-08 2025-06-30 13F MERCK COM 58933Y105 20,034 -8,108 -28.81 1,586 -37.25 0.1024
2025-04-04 2025-03-31 13F MERCK COM 58933Y105 28,142 -383 -1.34 2,526 -10.96 0.1736
2025-01-08 2024-12-31 13F MERCK COM 58933Y105 28,525 2,814 10.94 2,838 -2.81 0.1856
2024-10-07 2024-09-30 13F MERCK COM 58933Y105 25,711 537 2.13 2,920 -6.32 0.1963
2024-07-12 2024-06-30 13F MERCK COM 58933Y105 25,174 -1,126 -4.28 3,117 -10.20 0.2214
2024-04-10 2024-03-31 13F MERCK COM 58933Y105 26,300 -1,535 -5.51 3,470 14.37 0.2537
2024-01-10 2023-12-31 13F MERCK COM 58933Y105 27,835 -450 -1.59 3,035 4.23 0.2413
2023-10-11 2023-09-30 13F MERCK COM 58933Y105 28,285 -888 -3.04 2,912 -13.52 0.2507
2023-07-07 2023-06-30 13F MERCK COM 58933Y105 29,173 -2,220 -7.07 3,366 0.81 0.2783
2023-04-12 2023-03-31 13F MERCK COM 58933Y105 31,393 -12,848 -29.04 3,340 -31.97 0.2848
2023-01-19 2022-12-31 13F/A-1 MERCK COM 58933Y105 44,241 398 0.91 4,909 29.98 0.4437
2023-01-06 2022-12-31 13F MERCK COM 58933Y105 44,241 398 5 0.2509
2022-10-06 2022-09-30 13F MERCK COM 58933Y105 43,843 4,486 11.40 3,776 5.24 0.3584
2022-07-07 2022-06-30 13F MERCK COM 58933Y105 39,357 4,481 12.85 3,588 25.41 0.3212
2022-04-11 2022-03-31 13F MERCK COM 58933Y105 34,876 1,684 5.07 2,861 12.50 0.2221
2022-01-12 2021-12-31 13F MERCK COM 58933Y105 33,192 -890 -2.61 2,543 -0.66 0.1908
2021-10-12 2021-09-30 13F MERCK COM 58933Y105 34,082 753 2.26 2,560 -1.23 0.2072
2021-07-09 2021-06-30 13F MERCK COM 58933Y105 33,329 -3,718 -10.04 2,592 -9.24 0.2185
2021-04-09 2021-03-31 13F MERCK & CO. COM 58933Y105 37,047 3,668 10.99 2,856 4.62 0.2575
2021-01-12 2020-12-31 13F MERCK & CO. COM 58933Y105 33,379 -518 -1.53 2,730 -2.92 0.2579
2020-10-14 2020-09-30 13F MERCK & CO. COM 58933Y105 33,897 -2,891 -7.86 2,812 -1.16 0.2904
2020-07-09 2020-06-30 13F MERCK & CO. COM 58933Y105 36,788 30,854 519.95 2,845 522.54 0.3134
2020-04-23 2020-03-31 13F MERCK & CO. COM 58933Y105 5,934 -1,885 -24.11 457 -35.72 0.0593
2020-01-14 2019-12-31 13F MERCK COM 58933Y105 7,819 2,262 40.71 711 51.92 0.0744
2019-10-10 2019-09-30 13F MERCK COM 58933Y105 5,557 104 1.91 468 2.41 0.0523
2019-07-18 2019-06-30 13F MERCK COM 58933Y105 5,453 -90 -1.62 457 -0.87 0.0520
2019-04-11 2019-03-31 13F MERCK COM 58933Y105 5,543 182 3.39 461 12.44 0.0547
2019-01-16 2018-12-31 13F MERCK COM 58933Y105 5,361 -100 -1.83 410 5.94 0.0530
2018-10-10 2018-09-30 13F MERCK COM 58933Y105 5,461 365 7.16 387 25.24 0.0437
2018-07-13 2018-06-30 13F MERCK COM 58933Y105 5,096 0 0.00 309 11.15 0.0368
2018-04-13 2018-03-31 13F MERCK COM 58933Y105 5,096 -1,132 -18.18 278 -20.57 0.0325
2018-01-16 2017-12-31 13F MERCK COM 58933Y105 6,228 -3,740 -37.52 350 -45.14 0.0408
2017-10-13 2017-09-30 13F 1MERCK COM 58933Y105 9,968 -495 -4.73 638 -4.92 0.0777
2017-07-14 2017-06-30 13F MERCK COM 58933Y105 10,463 -11,782 -52.96 671 -52.51 0.0849
2017-04-11 2017-03-31 13F MERCK COM 58933Y105 22,245 1,800 8.80 1,413 17.36 0.1815
2017-01-12 2016-12-31 13F MERCK COM 58933Y105 20,445 8,114 65.80 1,204 56.36 0.1634
2016-10-12 2016-09-30 13F MERCK COM 58933Y105 12,331 -563 -4.37 770 3.63 0.1047
2016-07-13 2016-06-30 13F MERCK COM 58933Y105 12,894 618 5.03 743 14.31 0.1080
2016-04-21 2016-03-31 13F MERCK & CO INC COM 58933Y105 12,276 0 0.00 650 0.31 0.0980
2016-01-12 2015-12-31 13F MERCK & CO INC COM 58933Y105 12,276 640 5.50 648 12.70 0.0985
2015-10-09 2015-09-30 13F MERCK & CO INC COM 58933Y105 11,636 -66 -0.56 575 -13.66 0.0908
2015-07-15 2015-06-30 13F MERCK & CO INC COM 58933Y105 11,702 70 0.60 666 -0.45 0.1004
2015-04-13 2015-03-31 13F MERCK & CO INC COM 58933Y105 11,632 1,500 14.80 669 16.15 0.0982
2015-01-16 2014-12-31 13F MERCK & CO INC COM 58933Y105 10,132 0 0.00 576 -4.16 0.0845
2014-10-14 2014-09-30 13F MERCK & CO INC COM 58933Y105 10,132 192 1.93 601 4.52 0.0917
2014-07-18 2014-06-30 13F/A-1 MERCK & CO INC COM 58933Y105 9,940 3,256 48.71 575 51.32 0.0889
2014-07-15 2014-06-30 13F MERCK & CO INC COM 58933Y105 9,940 3,256 575 0.0911
2014-04-10 2014-03-31 13F ERCK & CO INC COM 58933Y105 6,684 759 12.81 380 27.95 0.0663
2014-01-13 2013-12-31 13F MERCK & CO INC COM 58933Y105 5,925 660 12.54 297 18.33 0.0543
2013-10-08 2013-09-30 13F MERCK & CO INC COM 58933Y105 5,265 238 4.73 251 7.26 0.0531
2013-07-17 2013-06-30 13F/A-1 MERCK & CO INC COM 58933Y105 5,027 5,027 234 0.0550
2013-07-16 2013-06-30 13F MERCK & CO INC COM 58933Y105 5,027 234
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.