Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionMengis Capital Management, Inc.
Latest Disclosed Ownership48,922 shares
Latest Disclosed Value $ 5,884,871
Mengis Capital Management, Inc. reports 4.25% decrease in ownership of MRK / Merck & Co., Inc.

On May 12, 2026 - Mengis Capital Management, Inc. filed a 13F-HR form disclosing ownership of 48,922 shares of Merck & Co., Inc. (MX:MRK) valued at $5,884,871 USD as of March 31, 2026. The entity filed a previous 13F-HR on March 5, 2026 disclosing 51,096 shares of Merck & Co., Inc.. This represents a change in shares of -4.25% 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)
2026-05-12 2026-03-31 13F MERCK COM 58933Y105 48,922 -2,174 -4.25 5,885 9.41 1.0129
2026-03-05 2025-12-31 13F MERCK COM 58933Y105 51,096 -799 -1.54 5,378 23.49 0.9507
2025-11-12 2025-09-30 13F MERCK COM 58933Y105 51,895 -4,398 -7.81 4,356 -2.27 0.8565
2025-07-24 2025-06-30 13F MERCK COM 58933Y105 56,293 -11,576 -17.06 4,456 -26.84 0.9468
2025-05-08 2025-03-31 13F MERCK COM 58933Y105 67,869 -39,320 -36.68 6,092 -42.88 1.2718
2025-02-04 2024-12-31 13F MERCK COM 58933Y105 107,189 -3,326 -3.01 10,663 -15.04 2.1780
2024-11-05 2024-09-30 13F MERCK COM 58933Y105 110,515 -1,230 -1.10 12,550 -9.28 2.4692
2024-08-13 2024-06-30 13F/A-1 MERCK COM 58933Y105 111,745 -14,859 -11.74 13,834 -17.19 2.8041
2024-07-17 2024-06-30 13F MERCK COM 58933Y105 126,604 0 16,705 2.3813
2024-05-14 2024-03-31 13F/A-1 MERCK COM 58933Y105 126,604 3,553 2.89 16,705 24.52 2.5760
2024-05-07 2024-03-31 13F MERCK COM 58933Y105 123,051 0 13,415 2.5144
2024-02-01 2023-12-31 13F MERCK COM 58933Y105 123,051 -747 -0.60 13,415 5.26 2.5144
2023-11-09 2023-09-30 13F MERCK COM 58933Y105 123,798 -577 -0.46 12,745 -11.19 2.6487
2023-08-08 2023-06-30 13F MERCK COM 58933Y105 124,375 -4,910 -3.80 14,352 4.34 2.8634
2023-05-05 2023-03-31 13F MERCK COM 58933Y105 129,285 -11,648 -8.26 13,755 91,593.33 2.8980
2023-02-01 2022-12-31 13F MERCK AND CO INC COM COM 58933Y105 140,933 -4,579 -3.15 16 -99.88 3.4088
2022-11-04 2022-09-30 13F MERCK AND CO INC COM COM 58933Y105 145,512 -6,654 -4.37 12,531 -9.67 2.9684
2022-07-19 2022-06-30 13F MERCK AND CO INC COM COM 58933Y105 152,166 -1,340 -0.87 13,873 10.15 3.0470
2022-05-02 2022-03-31 13F MERCK AND CO INC COM COM 58933Y105 153,506 160 0.10 12,595 7.17 2.4143
2022-02-04 2021-12-31 13F MERCK AND CO INC COM COM 58933Y105 153,346 7,012 4.79 11,752 6.92 2.2065
2021-11-03 2021-09-30 13F MERCK AND CO INC COM COM 58933Y105 146,334 1,609 1.11 10,991 -2.35 2.3086
2021-08-16 2021-06-30 13F/A-1 MERCK AND CO INC COM COM 58933Y105 144,725 17,456 13.72 11,255 14.72 2.3328
2021-07-21 2021-06-30 13F MERCK AND CO INC COM COM 58933Y105 127,269 0 9,811 2.1696
2021-05-07 2021-03-31 13F MERCK AND CO INC COM COM 58933Y105 127,269 9,144 7.74 9,811 1.54 2.1733
2021-02-03 2020-12-31 13F MERCK AND CO INC COM COM 58933Y105 118,125 14,488 13.98 9,662 12.40 2.3467
2020-10-29 2020-09-30 13F MERCK AND CO INC COM COM 58933Y105 103,637 7,570 7.88 8,596 15.72 2.3579
2020-07-22 2020-06-30 13F MERCK AND CO INC COM COM 58933Y105 96,067 6,840 7.67 7,428 8.20 2.2058
2020-05-06 2020-03-31 13F MERCK AND CO INC COM COM 58933Y105 89,227 14,239 18.99 6,865 0.66 2.3453
2020-02-06 2019-12-31 13F MERCK AND CO INC COM COM 58933Y105 74,988 8,655 13.05 6,820 22.16 1.8786
2019-11-05 2019-09-30 13F MERCK AND CO INC COM COM 58933Y105 66,333 1,953 3.03 5,583 3.43 1.6635
2019-07-18 2019-06-30 13F MERCK AND CO INC COM COM 589331107 64,380 3,379 5.54 5,398 6.41 1.6511
2019-05-06 2019-03-31 13F MERCK AND CO INC COM COM 589331107 61,001 3,319 5.75 5,073 15.11 2.8313
2019-02-06 2018-12-31 13F MERCK AND CO INC COM COM 589331107 57,682 -746 -1.28 4,407 6.35 2.7949
2018-11-05 2018-09-30 13F MERCK AND CO INC COM COM 589331107 58,428 205 0.35 4,144 17.26 2.2777
2018-07-24 2018-06-30 13F MERCK AND CO INC COM COM 589331107 58,223 795 1.38 3,534 12.98 2.0897
2018-04-27 2018-03-31 13F MERCK AND CO INC COM COM 589331107 57,428 1,654 2.97 3,128 -0.32 1.8713
2018-02-13 2017-12-31 13F MERCK AND CO INC COM COM 589331107 55,774 6,608 13.44 3,138 -0.32 1.9004
2017-11-06 2017-09-30 13F MERCK AND CO INC COM COM 589331107 49,166 650 1.34 3,148 1.25 2.1091
2017-08-01 2017-06-30 13F MERCK AND CO INC COM COM 589331107 48,516 1,430 3.04 3,109 3.95 2.2022
2017-05-11 2017-03-31 13F MERCK AND CO INC COM COM 589331107 47,086 1,650 3.63 2,991 11.85 2.1901
2017-02-07 2016-12-31 13F MERCK & CO INC COM COM 589331107 45,436 11,456 33.71 2,674 26.13 2.1262
2016-10-31 2016-09-30 13F MERCK & CO INC COM COM 589331107 33,980 700 2.10 2,120 10.59 1.7645
2016-08-08 2016-06-30 13F MERCK & CO INC COM COM 589331107 33,280 11,900 55.66 1,917 69.50 1.6900
2016-05-11 2016-03-31 13F/A-1 MERCK & CO INC COM COM 589331107 21,380 3,857 22.01 1,131 22.27 1.0448
2016-05-09 2016-03-31 13F MERCK & CO INC COM COM 589331107 21,380 1,131
2016-02-01 2015-12-31 13F MERCK & CO INC COM COM 589331107 17,523 12,676 261.52 925 287.03 0.8068
2015-11-09 2015-09-30 13F MERCK & CO INC COM COM 589331107 4,847 501 11.53 239 -3.24 0.2227
2015-07-29 2015-06-30 13F MERCK & CO INC COM COM 589331107 4,346 1 0.02 247 -0.80 0.2065
2015-04-28 2015-03-31 13F MERCK & CO INC COM COM 589331107 4,345 1 0.02 249 1.22 0.2174
2015-02-10 2014-12-31 13F MERCK & CO INC COM COM 589331107 4,344 4,344 246 0.2374
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.