Amgen Inc.
CH ˙ SWX ˙ NL0000888691
SecurityCH:AMGN / Amgen Inc.
InstitutionBeck Mack & Oliver Llc
Latest Disclosed Ownership624 shares
Latest Disclosed Value $ 219,554
Beck Mack & Oliver Llc reports 87.67% decrease in ownership of AMGN / Amgen Inc.

On May 12, 2026 - Beck Mack & Oliver Llc filed a 13F-HR form disclosing ownership of 624 shares of Amgen Inc. (CH:AMGN) valued at $219,554 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 5,062 shares of Amgen Inc.. This represents a change in shares of -87.67% 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 INC COM COM 031162100 624 -4,438 -87.67 220 -86.78 0.0045
2026-02-12 2025-12-31 13F AMGEN INC COM COM 031162100 5,062 33 0.66 1,657 16.70 0.0301
2025-11-14 2025-09-30 13F AMGEN INC COM COM 031162100 5,029 37 0.74 1,419 1.87 0.0258
2025-08-14 2025-06-30 13F AMGEN INC COM COM 031162100 4,992 87 1.77 1,394 -8.84 0.0266
2025-05-15 2025-03-31 13F AMGEN INC COM COM 031162100 4,905 282 6.10 1,528 26.80 0.0305
2025-02-13 2024-12-31 13F AMGEN INC COM COM 031162100 4,623 34 0.74 1,205 -18.47 0.0223
2024-11-13 2024-09-30 13F AMGEN INC COM COM 031162100 4,589 20 0.44 1,479 3.57 0.0288
2024-08-14 2024-06-30 13F AMGEN INC COM COM 031162100 4,569 1 0.02 1,428 9.94 0.0296
2024-05-14 2024-03-31 13F AMGEN INC COM COM 031162100 4,568 89 1.99 1,299 0.70 0.0263
2024-02-14 2023-12-31 13F AMGEN INC COM COM 031162100 4,479 4,479 1,290 0.0300
2022-08-12 2022-06-30 13F AMGEN INC COM COM 031162100 0 -4,200 -100.00 0 -100.00
2022-05-16 2022-03-31 13F AMGEN INC COM COM 031162100 4,200 0 0.00 1,016 7.51 0.0254
2022-01-28 2021-12-31 13F AMGEN INC COM COM 031162100 4,200 0 0.00 945 5.82 0.0225
2021-11-04 2021-09-30 13F AMGEN INC COM COM 031162100 4,200 -8 -0.19 893 -12.96 0.0232
2021-07-28 2021-06-30 13F AMGEN INC COM COM 031162100 4,208 8 0.19 1,026 -1.82 0.0273
2021-05-11 2021-03-31 13F AMGEN INC COM COM 031162100 4,200 -1,000 -19.23 1,045 -12.63 0.0323
2021-02-10 2020-12-31 13F AMGEN INC COM COM 031162100 5,200 0 0.00 1,196 -9.53 0.0397
2020-11-02 2020-09-30 13F AMGEN INC COM COM 031162100 5,200 0 0.00 1,322 7.83 0.0486
2020-08-10 2020-06-30 13F AMGEN INC COM COM 031162100 5,200 0 0.00 1,226 16.32 0.0456
2020-05-05 2020-03-31 13F AMGEN INC COM COM 031162100 5,200 -180 -3.35 1,054 -18.74 0.0469
2020-02-07 2019-12-31 13F AMGEN INC COM COM 031162100 5,380 0 0.00 1,297 24.59 0.0429
2019-11-06 2019-09-30 13F AMGEN INC COM COM 031162100 5,380 -20 -0.37 1,041 4.62 0.0367
2019-08-13 2019-06-30 13F AMGEN INC COM COM 031162100 5,400 0 0.00 995 -3.02 0.0350
2019-05-02 2019-03-31 13F AMGEN INC COM COM 031162100 5,400 0 0.00 1,026 -2.38 0.0367
2019-02-04 2018-12-31 13F AMGEN INC COM COM 031162100 5,400 -800 -12.90 1,051 -18.21 0.0422
2018-10-29 2018-09-30 13F AMGEN INC COM COM 031162100 6,200 0 0.00 1,285 12.33 0.0408
2018-07-25 2018-06-30 13F AMGEN INC COM COM 031162100 6,200 0 0.00 1,144 8.23 0.0384
2018-04-25 2018-03-31 13F AMGEN INC COM COM 031162100 6,200 0 0.00 1,057 -1.95 0.0356
2018-02-02 2017-12-31 13F AMGEN INC COM COM 031162100 6,200 0 0.00 1,078 -6.75 0.0354
2017-10-27 2017-09-30 13F AMGEN INC COM COM 031162100 6,200 0 0.00 1,156 8.24 0.0380
2017-07-26 2017-06-30 13F AMGEN INC COM COM 031162100 6,200 -400 -6.06 1,068 -1.39 0.0360
2017-04-27 2017-03-31 13F AMGEN INC COM COM 031162100 6,600 -2,750 -29.41 1,083 -20.78 0.0379
2017-01-31 2016-12-31 13F AMGEN INC COM COM 031162100 9,350 -2,750 -22.73 1,367 -32.26 0.0492
2016-10-28 2016-09-30 13F AMGEN INC COM COM 031162100 12,100 0 0.00 2,018 9.61 0.0728
2016-07-29 2016-06-30 13F AMGEN INC COM COM 031162100 12,100 0 0.00 1,841 1.49 0.0650
2016-04-27 2016-03-31 13F AMGEN INC COM COM 031162100 12,100 -2,500 -17.12 1,814 -23.46 0.0633
2016-02-01 2015-12-31 13F AMGEN INC COM COM 031162100 14,600 -200 -1.35 2,370 15.78 0.0808
2015-11-02 2015-09-30 13F AMGEN INC COM COM 031162100 14,800 0 0.00 2,047 -9.90 0.0619
2015-07-31 2015-06-30 13F AMGEN INC COM COM 031162100 14,800 -260 -1.73 2,272 -5.61 0.0592
2015-04-28 2015-03-31 13F AMGEN INC COM COM 031162100 15,060 15,060 0.00 2,407 0.0602
2015-01-26 2014-12-31 13F AMGEN INC COM COM 031162100 0 -15,173 -100.00 0 -100.00
2014-10-29 2014-09-30 13F AMGEN INC COM COM 031162100 15,173 -2,700 -15.11 2,131 0.71 0.0501
2014-07-31 2014-06-30 13F AMGEN INC COM COM 031162100 17,873 260 1.48 2,116 -2.58 0.0475
2014-04-30 2014-03-31 13F AMGEN INC COM COM 031162100 17,613 0 0.00 2,172 8.11 0.0508
2014-01-29 2013-12-31 13F AMGEN INC COM COM 031162100 17,613 -1,337 -7.06 2,009 -5.28 0.0491
2013-10-28 2013-09-30 13F/A-1 AMGEN INC COM COM 031162100 18,950 0 0.00 2,121 13.42 0.0558
2013-10-28 2013-09-30 13F AMGEN INC COM COM 031162100 18,950 1,870
2013-07-24 2013-06-30 13F AMGEN INC COM COM 031162100 18,950 18,950 1,870 0.0510
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.