Amgen Inc.
CH ˙ SWX ˙ NL0000888691
SecurityCH:AMGN / Amgen Inc.
InstitutionRiverview Trust Co
Latest Disclosed Ownership546 shares
Latest Disclosed Value $ 192,110
Riverview Trust Co reports 4.55% decrease in ownership of AMGN / Amgen Inc.

On May 1, 2026 - Riverview Trust Co filed a 13F-HR form disclosing ownership of 546 shares of Amgen Inc. (CH:AMGN) valued at $192,110 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 572 shares of Amgen Inc.. This represents a change in shares of -4.55% 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)
2026-05-01 2026-03-31 13F Amgen Com 031162100 546 -26 -4.55 192 2.67 0.1667
2026-01-26 2025-12-31 13F Amgen Com 031162100 572 0 0.00 187 16.15 0.2254
2025-10-22 2025-09-30 13F Amgen Com 031162100 572 0 0.00 161 1.26 0.1950
2025-07-21 2025-06-30 13F Amgen Com 031162100 572 -434 -43.14 160 -49.20 0.1988
2025-04-11 2025-03-31 13F Amgen Com 031162100 1,006 0 0.00 313 19.47 0.3093
2025-02-06 2024-12-31 13F Amgen Com 031162100 1,006 -10 -0.98 262 -19.88 0.2384
2024-10-18 2024-09-30 13F Amgen Com 031162100 1,016 10 0.99 327 4.14 0.2871
2024-07-16 2024-06-30 13F Amgen Com 031162100 1,006 0 0.00 314 9.79 0.2979
2024-04-12 2024-03-31 13F Amgen Com 031162100 1,006 100 11.04 286 10.00 0.2205
2024-01-24 2023-12-31 13F Amgen Com 031162100 906 0 0.00 261 7.00 0.2655
2023-10-17 2023-09-30 13F Amgen Com 031162100 906 381 72.57 243 109.48 0.2159
2023-07-18 2023-06-30 13F Amgen Com 031162100 525 0 0.00 117 -7.94 0.1056
2023-04-20 2023-03-31 13F Amgen Com 031162100 525 0 0.00 127 0.1167
2023-01-26 2022-12-31 13F Amgen Com 031162100 525 -96 -15.46 0 -100.00 0.1306
2022-10-27 2022-09-30 13F Amgen Com 031162100 621 96 18.29 140 9.38 0.1355
2022-07-27 2022-06-30 13F Amgen Com 031162100 525 0 0.00 128 0.79 0.1116
2022-04-21 2022-03-31 13F Amgen Com 031162100 525 419 395.28 127 429.17 0.0942
2022-01-19 2021-12-31 13F Amgen Com 031162100 106 0 0.00 24 4.35 0.0141
2021-10-14 2021-09-30 13F Amgen Com 031162100 106 0 0.00 23 -11.54 0.0243
2021-07-16 2021-06-30 13F Amgen Com 031162100 106 0 0.00 26 0.00 0.0275
2021-04-19 2021-03-31 13F Amgen Com 031162100 106 0 0.00 26 8.33 0.0290
2021-01-22 2020-12-31 13F Amgen Com 031162100 106 0 0.00 24 -11.11 0.0265
2020-10-15 2020-09-30 13F Amgen Com 031162100 106 0 0.00 27 8.00 0.0310
2020-07-08 2020-06-30 13F Amgen Com 031162100 106 0 0.00 25 19.05 0.0242
2020-04-15 2020-03-31 13F/A-1 Amgen Com 031162100 106 -1,288 -92.40 21 -93.75 0.0202
2020-04-15 2020-03-31 13F Amgen Com 031162100 1,394 0 336 179,261.1878
2020-01-10 2019-12-31 13F Amgen Com 031162100 1,394 0 0.00 336 24.44 0.2261
2019-10-16 2019-09-30 13F Amgen Com 031162100 1,394 0 0.00 270 5.06 0.1880
2019-07-12 2019-06-30 13F Amgen Com 031162100 1,394 0 0.00 257 -3.02 0.1805
2019-04-10 2019-03-31 13F Amgen Com 031162100 1,394 26 1.90 265 -0.38 0.2003
2019-02-11 2018-12-31 13F Amgen COM 031162100 1,368 1,368 266 0.2081
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.