Amgen Inc.
CH ˙ SWX ˙ NL0000888691
SecurityCH:AMGN / Amgen Inc.
InstitutionCohen Klingenstein LLC
Latest Disclosed Ownership31,270 shares
Latest Disclosed Value $ 11,002,350
Cohen Klingenstein LLC ownership in AMGN / Amgen Inc.

On April 15, 2026 - Cohen Klingenstein LLC filed a 13F-HR form disclosing ownership of 31,270 shares of Amgen Inc. (CH:AMGN) valued at $11,002,350 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 31,270 shares of Amgen Inc.. This represents a change in shares of 0.00% 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)
2026-04-15 2026-03-31 13F Amgen COM 031162100 31,270 0 0.00 11,002 7.50 0.3561
2026-01-20 2025-12-31 13F Amgen COM 031162100 31,270 0 0.00 10,235 15.98 0.3110
2025-10-16 2025-09-30 13F Amgen COM 031162100 31,270 0 0.00 8,824 1.08 0.2765
2025-07-18 2025-06-30 13F Amgen COM 031162100 31,270 0 0.00 8,731 -10.39 0.2913
2025-04-15 2025-03-31 13F Amgen COM 031162100 31,270 0 0.00 9,742 19.53 0.3530
2025-01-15 2024-12-31 13F Amgen COM 031162100 31,270 -1,750 -5.30 8,150 -23.40 0.2788
2024-10-16 2024-09-30 13F Amgen COM 031162100 33,020 0 0.00 10,639 3.12 0.3707
2024-07-15 2024-06-30 13F Amgen COM 031162100 33,020 0 0.00 10,317 9.90 0.3745
2024-04-12 2024-03-31 13F Amgen COM 031162100 33,020 0 0.00 9,388 -1.28 0.3495
2024-01-16 2023-12-31 13F Amgen COM 031162100 33,020 0 0.00 9,510 7.17 0.3889
2023-10-13 2023-09-30 13F Amgen COM 031162100 33,020 0 0.00 8,874 21.05 0.4020
2023-07-14 2023-06-30 13F Amgen COM 031162100 33,020 0 0.00 7,331 -8.16 0.3175
2023-04-14 2023-03-31 13F Amgen COM 031162100 33,020 0 0.00 7,983 -7.96 0.3748
2023-01-13 2022-12-31 13F Amgen COM 031162100 33,020 0 0.00 8,672 16.51 0.4364
2022-10-12 2022-09-30 13F Amgen COM 031162100 33,020 0 0.00 7,443 -7.36 0.3946
2022-07-15 2022-06-30 13F Amgen COM 031162100 33,020 0 0.00 8,034 0.61 0.4029
2022-04-14 2022-03-31 13F Amgen COM 031162100 33,020 0 0.00 7,985 7.48 0.3316
2022-01-14 2021-12-31 13F Amgen COM 031162100 33,020 0 0.00 7,429 5.80 0.2938
2021-10-15 2021-09-30 13F Amgen COM 031162100 33,020 0 0.00 7,022 -12.76 0.3070
2021-07-16 2021-06-30 13F Amgen COM 031162100 33,020 0 0.00 8,049 -2.03 0.3460
2021-04-15 2021-03-31 13F Amgen COM 031162100 33,020 0 0.00 8,216 8.22 0.3791
2021-01-25 2020-12-31 13F/A-1 Amgen COM 031162100 33,020 0 0.00 7,592 -9.53 0.3793
2021-01-19 2020-12-31 13F Amgen COM 031162100 33,020 0 7,592 379,154.8722
2020-10-19 2020-09-30 13F Amgen COM 031162100 33,020 0 0.00 8,392 7.76 0.4729
2020-07-15 2020-06-30 13F Amgen COM 031162100 33,020 0 0.00 7,788 16.34 0.4778
2020-04-15 2020-03-31 13F Amgen COM 031162100 33,020 0 0.00 6,694 -15.90 0.4951
2020-01-15 2019-12-31 13F Amgen COM 031162100 33,020 0 0.00 7,960 24.57 0.4623
2019-10-17 2019-09-30 13F Amgen COM 031162100 33,020 0 0.00 6,390 5.01 0.4016
2019-07-15 2019-06-30 13F Amgen COM 031162100 33,020 0 0.00 6,085 -3.00 0.4335
2019-04-16 2019-03-31 13F Amgen COM 031162100 33,020 0 0.00 6,273 -2.41 0.4373
2019-01-18 2018-12-31 13F Amgen COM 031162100 33,020 0 0.00 6,428 -6.09 0.9712
2018-10-15 2018-09-30 13F Amgen COM 031162100 33,020 0 0.00 6,845 12.31 0.8704
2018-07-13 2018-06-30 13F Amgen COM 031162100 33,020 0 0.00 6,095 8.28 0.8332
2018-04-13 2018-03-31 13F Amgen COM 031162100 33,020 0 0.00 5,629 -1.97 0.7989
2018-01-16 2017-12-31 13F Amgen COM 031162100 33,020 0 0.00 5,742 -6.74 0.8163
2017-10-17 2017-09-30 13F Amgen COM 031162100 33,020 0 0.00 6,157 8.26 0.9296
2017-07-17 2017-06-30 13F Amgen COM 031162100 33,020 0 0.00 5,687 4.96 0.8856
2017-04-13 2017-03-31 13F Amgen COM 031162100 33,020 0 0.00 5,418 12.22 0.8671
2017-01-17 2016-12-31 13F Amgen COM 031162100 33,020 0 0.00 4,828 -12.35 0.8248
2016-10-14 2016-09-30 13F Amgen COM 031162100 33,020 0 0.00 5,508 9.63 0.9562
2016-07-15 2016-06-30 13F Amgen COM 031162100 33,020 0 0.00 5,024 1.47 0.9238
2016-04-18 2016-03-31 13F Amgen COM 031162100 33,020 0 0.00 4,951 -7.63 0.9328
2016-01-20 2015-12-31 13F Amgen COM 031162100 33,020 0 0.00 5,360 17.36 0.9990
2015-10-15 2015-09-30 13F Amgen COM 031162100 33,020 0 0.00 4,567 -9.90 0.9005
2015-07-15 2015-06-30 13F Amgen COM 031162100 33,020 0 0.00 5,069 -3.96 0.9118
2015-04-14 2015-03-31 13F Amgen COM 031162100 33,020 0 0.00 5,278 0.34 0.9634
2015-01-13 2014-12-31 13F Amgen COM 031162100 33,020 0 0.00 5,260 13.41 0.9870
2014-10-14 2014-09-30 13F Amgen COM 031162100 33,020 0 0.00 4,638 18.65 0.8181
2014-07-15 2014-06-30 13F Amgen COM 031162100 33,020 0 0.00 3,909 -4.03 0.7463
2014-04-15 2014-03-31 13F Amgen COM 031162100 33,020 0 0.00 4,073 8.12 0.8094
2014-01-14 2013-12-31 13F Amgen COM 031162100 33,020 0 0.00 3,767 1.92 0.7484
2013-10-15 2013-09-30 13F Amgen COM 031162100 33,020 0 0.00 3,696 13.44 0.8065
2013-07-30 2013-06-30 13F Amgen COM 031162100 33,020 33,020 3,258 0.7579
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.