Amgen Inc.
US ˙ NasdaqGS ˙ US0311621009

SecurityAMGN / Amgen Inc.
InstitutionShell Asset Management Co
Latest Disclosed Ownership9,992 shares
Latest Disclosed Value $ 2,820
Shell Asset Management Co reports 37.85% decrease in ownership of AMGN / Amgen Inc.

On November 7, 2025 - Shell Asset Management Co filed a 13F-HR form disclosing ownership of 9,992 shares of Amgen Inc. (US:AMGN) valued at $2,819,742 USD as of September 30, 2025. The entity filed a previous 13F-HR on July 23, 2025 disclosing 16,076 shares of Amgen Inc.. This represents a change in shares of -37.85% during the quarter. The current value of the position is $3,453,235 USD.

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)
2025-11-07 2025-09-30 13F AMGEN COM 031162100 9,992 -6,084 -37.85 3 -50.00 0.2832
2025-07-23 2025-06-30 13F AMGEN COM 031162100 16,076 7,440 86.15 4 100.00 0.1550
2025-05-14 2025-03-31 13F AMGEN COM 031162100 8,636 -239 -2.69 3 0.00 0.1278
2025-02-14 2024-12-31 13F AMGEN COM 031162100 8,875 -3,701 -29.43 2 -50.00 0.1011
2024-11-07 2024-09-30 13F AMGEN COM 031162100 12,576 -6,024 -32.39 4 -20.00 0.1783
2024-07-25 2024-03-31 13F AMGEN COM 031162100 18,600 -1,040 -5.30 6 0.00 0.2646
2024-02-14 2023-12-31 13F AMGEN COM 031162100 19,640 -5,287 -21.21 6 -16.67 0.2613
2023-11-08 2023-09-30 13F AMGEN COM 031162100 24,927 -399 -1.58 7 20.00 0.2768
2023-07-28 2023-06-30 13F AMGEN COM 031162100 25,326 -3,211 -11.25 6 -16.67 0.2218
2023-05-15 2023-03-31 13F AMGEN COM 031162100 28,537 -173 -0.60 7 -14.29 0.2863
2023-02-07 2022-12-31 13F AMGEN COM 031162100 28,710 -12,455 -30.26 8 -99.92 0.3303
2022-11-14 2022-09-30 13F AMGEN COM 031162100 41,165 -10,738 -20.69 9,279 -26.52 0.3616
2022-08-09 2022-06-30 13F AMGEN COM 031162100 51,903 -3,647 -6.57 12,628 -5.99 0.3736
2022-05-04 2022-03-31 13F AMGEN COM 031162100 55,550 -5,950 -9.67 13,433 -2.91 0.3171
2022-02-09 2021-12-31 13F AMGEN COM 031162100 61,500 -5,005 -7.53 13,836 -2.16 0.2839
2021-11-04 2021-09-30 13F AMGEN COM 031162100 66,505 -15,664 -19.06 14,142 -29.39 0.3175
2021-08-12 2021-06-30 13F AMGEN COM 031162100 82,169 -20,583 -20.03 20,029 -21.66 0.3883
2021-05-10 2021-03-31 13F AMGEN COM 031162100 102,752 23,609 29.83 25,566 40.50 0.5115
2021-02-16 2020-12-31 13F AMGEN COM 031162100 79,143 -1,092 -1.36 18,197 -10.77 0.3757
2020-11-13 2020-09-30 13F AMGEN COM 031162100 80,235 3,956 5.19 20,393 13.35 0.4741
2020-08-10 2020-06-30 13F AMGEN COM 031162100 76,279 26,861 54.35 17,991 79.57 0.4491
2020-05-11 2020-03-31 13F AMGEN COM 031162100 49,418 -5,939 -10.73 10,019 -24.92 0.2791
2020-02-13 2019-12-31 13F AMGEN COM 031162100 55,357 -8,630 -13.49 13,345 7.78 0.2875
2019-11-12 2019-09-30 13F AMGEN COM 031162100 63,987 -2,948 -4.40 12,382 0.38 0.2828
2019-08-12 2019-06-30 13F AMGEN COM 031162100 66,935 -6,735 -9.14 12,335 -11.87 0.2729
2019-05-09 2019-03-31 13F AMGEN COM 031162100 73,670 12,213 19.87 13,996 16.98 0.3086
2019-02-13 2018-12-31 13F AMGEN COM 031162100 61,457 -6,614 -9.72 11,964 -15.21 0.2982
2018-11-13 2018-09-30 13F AMGEN COM 031162100 68,071 -2,651 -3.75 14,110 8.08 0.2785
2018-08-10 2018-06-30 13F AMGEN COM 031162100 70,722 3,091 4.57 13,055 13.23 0.2676
2018-05-14 2018-03-31 13F AMGEN COM 031162100 67,631 1,312 1.98 11,530 -0.03 0.2296
2018-02-09 2017-12-31 13F AMGEN COM 031162100 66,319 11,428 20.82 11,533 12.69 0.2289
2017-10-20 2017-09-30 13F/A-1 AMGEN COM 031162100 54,891 -11,773 -17.66 10,234 -10.87 0.2276
2017-10-20 2017-06-30 13F/A-1 AMGEN COM 031162100 66,664 0 0.00 11,482 4.97 1.7622
2017-10-20 2017-03-31 13F/A-1 AMGEN COM 031162100 66,664 -3,509 -5.00 10,938 6.61 1.7261
2017-10-20 2016-12-31 13F/A-1 AMGEN COM 031162100 70,173 -13,086 -15.72 10,260 -26.12 1.8096
2017-10-20 2016-09-30 13F/A-1 AMGEN COM 031162100 83,259 83,259 13,888 2.1838
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.