Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionGillespie Robinson & Grimm Inc
Latest Disclosed Ownership18,402 shares
Latest Disclosed Value $ 2,213,577
Gillespie Robinson & Grimm Inc ownership in MRK / Merck & Co., Inc.

On April 8, 2026 - Gillespie Robinson & Grimm Inc filed a 13F-HR form disclosing ownership of 18,402 shares of Merck & Co., Inc. (MX:MRK) valued at $2,213,577 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 18,402 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)
2026-04-08 2026-03-31 13F MERCK COM 58933Y105 18,402 0 0.00 2,214 14.31 0.1610
2026-01-13 2025-12-31 13F MERCK COM 58933Y105 18,402 0 0.00 1,937 25.39 0.1359
2025-11-19 2025-09-30 13F MERCK COM 58933Y105 18,402 0 0.00 1,544 6.04 0.1084
2025-07-08 2025-06-30 13F MERCK COM 58933Y105 18,402 0 0.00 1,457 -11.81 0.1082
2025-04-11 2025-03-31 13F MERCK COM 58933Y105 18,402 -450 -2.39 1,652 -11.95 0.1335
2025-01-14 2024-12-31 13F MERCK COM 58933Y105 18,852 -922 -4.66 1,875 -16.48 0.1470
2024-10-10 2024-09-30 13F MERCK COM 58933Y105 19,774 -787 -3.83 2,246 -11.79 0.1748
2024-07-11 2024-06-30 13F MERCK COM 58933Y105 20,561 -5,358 -20.67 2,545 -25.56 0.2053
2024-04-16 2024-03-31 13F MERCK COM 58933Y105 25,919 5,054 24.22 3,420 50.35 0.2831
2024-01-11 2023-12-31 13F MERCK COM 58933Y105 20,865 2,109 11.24 2,275 17.82 0.2038
2023-10-18 2023-09-30 13F MERCK COM 58933Y105 18,756 0 0.00 1,931 -10.81 0.1931
2023-07-17 2023-06-30 13F MERCK COM 58933Y105 18,756 -244 -1.28 2,164 7.08 0.2004
2023-04-18 2023-03-31 13F MERCK COM 58933Y105 19,000 3,000 18.75 2,021 202,000.00 0.1966
2023-01-12 2022-12-31 13F MERCK COM 58933Y105 16,000 104 0.65 2 -99.93 0.1814
2022-10-13 2022-09-30 13F MERCK COM 58933Y105 15,896 -319 -1.97 1,369 -7.37 0.1485
2022-07-13 2022-06-30 13F MERCK COM 58933Y105 16,215 600 3.84 1,478 15.38 0.1517
2022-04-19 2022-03-31 13F MERCK COM 58933Y105 15,615 -260 -1.64 1,281 5.26 0.1123
2022-01-14 2021-12-31 13F MERCK COM 58933Y105 15,875 476 3.09 1,217 5.19 0.0948
2021-10-13 2021-09-30 13F MERCK COM 58933Y105 15,399 -2,599 -14.44 1,157 -17.36 0.0976
2021-07-13 2021-06-30 13F MERCK COM 58933Y105 17,998 -907 -4.80 1,400 -3.91 0.1182
2021-04-15 2021-03-31 13F MERCK COM 58933Y105 18,905 -500 -2.58 1,457 -8.19 0.1320
2021-01-15 2020-12-31 13F MERCK COM 58933Y105 19,405 -944 -4.64 1,587 -5.98 0.1515
2020-10-08 2020-09-30 13F MERCK COM 58933Y105 20,349 -186,634 -90.17 1,688 -89.45 0.1759
2020-07-15 2020-06-30 13F MERCK COM 58933Y105 206,983 -1,418 -0.68 16,006 -0.17 1.7968
2020-04-09 2020-03-31 13F MERCK COM 58933Y105 208,401 8,483 4.24 16,034 -11.82 2.2318
2020-01-15 2019-12-31 13F MERCK COM 58933Y105 199,918 1,236 0.62 18,183 8.72 2.0107
2019-10-10 2019-09-30 13F MERCK COM 58933Y105 198,682 646 0.33 16,725 0.72 2.0143
2019-07-22 2019-06-30 13F MERCK COM 58933Y105 198,036 10,870 5.81 16,605 6.67 1.9743
2019-04-12 2019-03-31 13F MERCK COM 58933Y105 187,166 -10,070 -5.11 15,567 3.29 1.8861
2019-01-22 2018-12-31 13F MERCK COM 58933Y105 197,236 -3,422 -1.71 15,071 5.87 2.0978
2018-10-18 2018-09-30 13F MERCK COM 58933Y105 200,658 180,357 888.41 14,235 1,055.44 1.6901
2018-07-20 2018-06-30 13F MERCK COM 58933Y105 20,301 7,218 55.17 1,232 72.79 0.1562
2018-04-19 2018-03-31 13F MERCK COM 58933Y105 13,083 2,690 25.88 713 21.88 0.0931
2018-01-10 2017-12-31 13F MERCK COM 58933Y105 10,393 382 3.82 585 -8.74 0.0739
2017-10-20 2017-09-30 13F MERCK COM 58933Y105 10,011 0 0.00 641 -0.16 0.0854
2017-07-11 2017-06-30 13F MERCK COM 58933Y105 10,011 0 0.00 642 0.94 0.0872
2017-04-10 2017-03-31 13F MERCK COM 58933Y105 10,011 -634 -5.96 636 1.44 0.0892
2017-01-17 2016-12-31 13F MERCK COM 58933Y105 10,645 -903 -7.82 627 -15.04 0.0944
2016-10-11 2016-09-30 13F MERCK COM 58933Y105 11,548 198 1.74 738 12.84 0.1139
2016-07-13 2016-06-30 13F MERCK COM 58933Y105 11,350 -966 -7.84 654 -5.35 0.1049
2016-04-18 2016-03-31 13F MERCK COM 58933Y105 12,316 169 1.39 691 7.63 0.1110
2016-01-07 2015-12-31 13F MERCK COM 58933Y105 12,147 226 1.90 642 6.47 0.1012
2015-10-22 2015-09-30 13F MERCK COM 58933Y105 11,921 2,877 31.81 603 17.09 0.0975
2015-07-16 2015-06-30 13F MERCK COM 58933Y105 9,044 0 0.00 515 -1.15 0.0810
2015-04-21 2015-03-31 13F MERCK COM 58933Y105 9,044 -200 -2.16 521 -0.76 0.0828
2015-01-21 2014-12-31 13F MERCK COM 58933Y105 9,244 0 0.00 525 -4.20 0.0842
2014-11-06 2014-09-30 13F MERCK COM 58933Y105 9,244 -300 -3.14 548 -0.72 0.0933
2014-07-15 2014-06-30 13F/A-2 MERCK COM 58933Y105 9,544 -525 -5.21 552 -3.50 0.0946
2014-07-11 2014-06-30 13F MERCK COM 58933Y105 16,644 773
2014-04-22 2014-03-31 13F MERCK COM 58933Y105 10,069 -200 -1.95 572 11.28 0.1071
2014-02-05 2013-12-31 13F MERCK COM 58933Y105 10,269 -2,700 -20.82 514 -16.69 0.0981
2013-10-10 2013-09-30 13F MERCK COM 58933Y105 12,969 -3,675 -22.08 617 -20.18 0.1277
2013-08-23 2013-06-30 13F MERCK COM 58933Y105 16,644 16,644 773 0.1655
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.