Amgen Inc.
MX ˙ BMV ˙ NL0000888691
SecurityMX:AMGN / Amgen Inc.
InstitutionSummit Trail Advisors, Llc
Latest Disclosed Ownership16,148 shares
Latest Disclosed Value $ 5,681,721
Summit Trail Advisors, Llc reports 19.63% increase in ownership of AMGN / Amgen Inc.

On May 12, 2026 - Summit Trail Advisors, Llc filed a 13F-HR form disclosing ownership of 16,148 shares of Amgen Inc. (MX:AMGN) valued at $5,681,721 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,498 shares of Amgen Inc.. This represents a change in shares of 19.63% 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 AMGEN COM 031162100 16,148 2,650 19.63 5,682 28.59 0.0814
2026-02-17 2025-12-31 13F AMGEN COM 031162100 13,498 -1,840 -12.00 4,418 2.08 0.0764
2025-11-14 2025-09-30 13F AMGEN COM 031162100 15,338 323 2.15 4,329 3.24 0.0598
2025-08-14 2025-06-30 13F AMGEN COM 031162100 15,015 15,015 4,192 0.0720
2025-01-29 2024-12-31 13F AMGEN COM 031162100 0 -7,552 -100.00 0 -100.00
2024-11-12 2024-09-30 13F AMGEN COM 031162100 7,552 2,163 40.14 2,433 44.56 0.0603
2024-08-13 2024-06-30 13F Amgen Inc Com COM 031162100 5,389 231 4.48 1,684 14.80 0.0443
2024-04-23 2024-03-31 13F AMGEN COM 031162100 5,158 425 8.98 1,467 7.56 0.0390
2024-02-06 2023-12-31 13F AMGEN COM 031162100 4,733 -233 -4.69 1,363 2.17 0.0451
2023-10-30 2023-09-30 13F AMGEN COM 031162100 4,966 670 15.60 1,335 39.98 0.0491
2023-07-25 2023-06-30 13F AMGEN COM 031162100 4,296 1,941 82.42 954 67.49 0.0360
2023-05-04 2023-03-31 13F AMGEN COM 031162100 2,355 -283 -10.73 569 -17.77 0.0229
2023-02-07 2022-12-31 13F Amgen Inc Com COM 031162100 2,638 255 10.70 693 28.86 0.0308
2022-11-10 2022-09-30 13F Amgen Inc Com Stock 031162100 2,383 574 31.73 537 22.05 0.0290
2022-08-09 2022-06-30 13F Amgen Inc Com COM 031162100 1,809 587 48.04 440 49.15 0.0272
2022-05-16 2022-03-31 13F Amgen Inc Com EQUITY 031162100 1,222 -21 -1.69 295 5.36 0.0239
2022-02-11 2021-12-31 13F Amgen Inc Com Equity 031162100 1,243 -477 -27.73 280 -23.50 0.0181
2021-11-16 2021-09-30 13F Amgen Inc Com COM 031162100 1,720 326 23.39 366 7.65 0.0275
2021-08-16 2021-06-30 13F Amgen Inc Com Equity 031162100 1,394 96 7.40 340 5.26 0.0298
2021-05-17 2021-03-31 13F AMGEN Equity 031162950 1,298 159 13.96 323 23.28 0.0348
2021-02-16 2020-12-31 13F AMGEN Equity 031162100 1,139 -572 -33.43 262 -35.47 0.0330
2020-11-16 2020-09-30 13F/A-1 Amgen Inc Com Equity 031162100 1,711 557 48.27 406 49.26 0.0785
2020-08-13 2020-06-30 13F Amgen Inc Com Equity 031162100 1,154 1,154 272 0.0507
2019-02-13 2018-12-31 13F AMGEN INC COM EQUITY 031162100 0 -1,390 -100.00 0 -100.00
2018-11-14 2018-09-30 13F AMGEN INC COM EQUITY 031162100 1,390 1,390 288 0.0636
2018-08-10 2018-06-30 13F AMGEN INC COM EQUITY 031162100 0 -2,843 -100.00 0 -100.00
2018-05-22 2018-03-31 13F/A-1 AMGEN INC COM EQUITY 031162100 2,843 225 8.59 434 -11.79 0.0737
2018-05-21 2018-03-31 13F AMGEN INC COM EQUITY 031162100 433,510 430,892 434
2018-02-14 2017-12-31 13F AMGEN EQUITY 031162100 2,618 2,618 492 0.0621
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.