Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionFirst Interstate Bank
Latest Disclosed Ownership15,822 shares
Latest Disclosed Value $ 1,903,229
First Interstate Bank reports 8.01% decrease in ownership of 6MK / Merck & Co., Inc.

On April 29, 2026 - First Interstate Bank filed a 13F-HR form disclosing ownership of 15,822 shares of Merck & Co., Inc. (BG:6MK) valued at $1,903,229 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 17,199 shares of Merck & Co., Inc.. This represents a change in shares of -8.01% 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)
2026-04-29 2026-03-31 13F MERCK COM 58933Y105 15,822 -1,377 -8.01 1,903 5.14 0.1018
2026-01-29 2025-12-31 13F MERCK COM 58933Y105 17,199 -683 -3.82 1,810 20.67 0.0971
2025-10-29 2025-09-30 13F MERCK COM 58933Y105 17,882 6,900 62.83 1,501 72.61 0.0829
2025-07-30 2025-06-30 13F MERCK COM 58933Y105 10,982 -1,240 -10.15 869 -20.78 0.0511
2025-04-30 2025-03-31 13F MERCK COM 58933Y105 12,222 -1,834 -13.05 1,097 -21.53 0.0655
2025-02-04 2024-12-31 13F Merck COM 58933Y105 14,056 1,942 16.03 1,398 1.67 0.0847
2024-10-29 2024-09-30 13F Merck COM 58933Y105 12,114 1,760 17.00 1,376 7.34 0.0836
2024-08-07 2024-06-30 13F Merck COM 58933Y105 10,354 -708 -6.40 1,282 -12.20 0.0851
2024-05-01 2024-03-31 13F Merck COM 58933Y105 11,062 -724 -6.14 1,460 13.63 0.1011
2024-01-30 2023-12-31 13F Merck COM 58933Y105 11,786 -824 -6.53 1,285 -1.08 0.0952
2023-10-31 2023-09-30 13F Merck COM 58933Y105 12,610 -165 -1.29 1,298 -11.94 0.1119
2023-08-01 2023-06-30 13F Merck COM 58933Y105 12,775 -224 -1.72 1,474 6.66 0.1218
2023-05-02 2023-03-31 13F Merck COM 58933Y105 12,999 794 6.51 1,383 138,100.00 0.1057
2023-01-30 2022-12-31 13F Merck COM 58933Y105 12,205 -522 -4.10 1 -99.91 0.1000
2022-10-25 2022-09-30 13F Merck COM 58933Y105 12,727 296 2.38 1,097 -3.18 0.0884
2022-08-12 2022-06-30 13F Merck COM 58933Y105 12,431 4,503 56.80 1,133 74.31 0.0856
2022-05-06 2022-03-31 13F Merck COM 58933Y105 7,928 -581 -6.83 650 -0.46 0.0570
2022-05-06 2022-03-31 13F Merck COM 58933Y105 7,680 630
2022-01-28 2021-12-31 13F Merck COM 58933Y105 8,509 134 1.60 653 3.82 0.0634
2021-11-01 2021-09-30 13F Merck COM 58933Y105 8,375 571 7.32 629 3.62 0.0645
2021-07-29 2021-06-30 13F Merck COM 58933Y105 7,804 -225 -2.80 607 -7.61 0.0639
2021-02-03 2020-12-31 13F Merck COM 58933Y105 8,029 -281 -3.38 657 -4.64 0.0875
2020-11-09 2020-09-30 13F Merck COM 58933Y105 8,310 -12,227 -59.54 689 -56.61 0.1034
2020-08-05 2020-06-30 13F Merck COM 58933Y105 20,537 -4,783 -18.89 1,588 -18.52 0.2195
2020-05-11 2020-03-31 13F Merck COM 58933Y105 25,320 1,324 5.52 1,949 -10.72 0.4877
2020-02-06 2019-12-31 13F Merck COM 58933Y105 23,996 379 1.60 2,183 9.81 0.4874
2019-10-30 2019-09-30 13F Merck COM 58933Y105 23,617 -1,806 -7.10 1,988 -6.75 0.4603
2019-08-05 2019-06-30 13F Merck COM 58933Y105 25,423 -989 -3.74 2,132 -2.96 0.4728
2019-05-02 2019-03-31 13F MERCK COM 58933Y105 26,412 -877 -3.21 2,197 5.32 0.4902
2019-01-30 2018-12-31 13F MERCK COM 58933Y105 27,289 -1,363 -4.76 2,086 2.61 0.5158
2018-11-07 2018-09-30 13F MERCK COM 58933Y105 28,652 38 0.13 2,033 17.04 0.4287
2018-07-26 2018-06-30 13F MERCK COM 58933Y105 28,614 -2,133 -6.94 1,737 3.70 0.3843
2018-04-25 2018-03-31 13F Merck COM 58933Y105 30,747 1,234 4.18 1,675 0.84 0.3783
2018-02-13 2017-12-31 13F Merck COM 58933Y105 29,513 -5,907 -16.68 1,661 -26.76 0.3524
2017-11-08 2017-09-30 13F Merck COM 58933Y105 35,420 1,581 4.67 2,268 4.56 0.4876
2017-08-07 2017-06-30 13F Merck COM 58933Y105 33,839 1,669 5.19 2,169 6.12 0.4487
2017-05-11 2017-03-31 13F Merck COM 58933Y105 32,170 -1,058 -3.18 2,044 4.50 0.4219
2017-01-31 2016-12-31 13F Merck COM 58933Y105 33,228 15,231 84.63 1,956 74.18 0.3851
2016-11-10 2016-09-30 13F Merck COM 58933Y105 17,997 937 5.49 1,123 14.24 0.2301
2016-08-09 2016-06-30 13F Merck COM 58933Y105 17,060 734 4.50 983 13.77 0.2047
2016-05-11 2016-03-31 13F Merck COM 58933Y105 16,326 695 4.45 864 4.60 0.1810
2016-02-02 2015-12-31 13F Merck COM 58933Y105 15,631 4,101 35.57 826 44.91 0.1714
2015-11-10 2015-09-30 13F Merck Common Stock 58933Y105 11,530 3,969 52.49 570 32.56 0.1216
2015-07-14 2015-06-30 13F Merck Com 58933Y105 7,561 -165 -2.14 430 -3.15 0.0655
2015-04-13 2015-03-31 13F Merck Com 58933Y105 7,726 300 4.04 444 5.46 0.0688
2015-01-09 2014-12-31 13F Merck Com 58933Y105 7,426 603 8.84 421 3.95 0.0693
2014-10-07 2014-09-30 13F Merck Com 58933Y105 6,823 -329 -4.60 405 -2.17 0.0868
2014-07-14 2014-06-30 13F Merck Com 58933Y105 7,152 158 2.26 414 4.28 0.0852
2014-04-11 2014-03-31 13F Merck Com 58933Y105 6,994 -475 -6.36 397 6.15 0.0872
2014-01-10 2013-12-31 13F Merck Com 58933Y105 7,469 -30 -0.40 374 4.47 0.0912
2013-10-11 2013-09-30 13F Merck Com 58933Y105 7,499 540 7.76 358 10.84 0.0964
2013-07-31 2013-06-30 13F Merck Com 58933Y105 6,959 6,959 323 0.1010
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.