Amgen Inc.
CH ˙ SWX ˙ NL0000888691
SecurityCH:AMGN / Amgen Inc.
InstitutionGreen Square Capital Advisors Llc
Latest Disclosed Ownership709 shares
Latest Disclosed Value $ 249,464
Green Square Capital Advisors Llc reports 1.00% increase in ownership of AMGN / Amgen Inc.

On May 7, 2026 - Green Square Capital Advisors Llc filed a 13F-HR form disclosing ownership of 709 shares of Amgen Inc. (CH:AMGN) valued at $249,464 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 702 shares of Amgen Inc.. This represents a change in shares of 1.00% 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)
2026-05-07 2026-03-31 13F AMGEN INC COM Stock 031162100 709 7 1.00 249 8.73 0.0263
2026-02-09 2025-12-31 13F AMGEN INC COM Stock 031162100 702 702 230 0.0239
2025-07-30 2025-06-30 13F AMGEN INC COM Stock 031162100 0 -702 -100.00 0 -100.00
2025-04-21 2025-03-31 13F AMGEN INC COM Stock 031162100 702 702 219 0.0331
2025-02-14 2024-12-31 13F AMGEN INC COM Stock 031162100 0 -1,357 -100.00 0 -100.00
2024-11-07 2024-09-30 13F AMGEN INC COM Stock 031162100 1,357 0 0.00 438 3.31 0.0615
2024-08-14 2024-06-30 13F AMGEN INC COM Stock 031162100 1,357 74 5.77 424 16.21 0.0585
2024-05-15 2024-03-31 13F AMGEN COM 031162100 1,283 300 30.52 365 28.62 0.0486
2024-01-18 2023-12-31 13F AMGEN COM 031162100 983 -20 -1.99 283 5.20 0.0382
2023-10-10 2023-09-30 13F AMGEN COM 031162100 1,003 -104 -9.39 270 9.80 0.0360
2023-07-13 2023-06-30 13F AMGEN COM 031162100 1,107 250 29.17 246 18.36 0.0309
2023-04-14 2023-03-31 13F AMGEN COM 031162100 857 0 0.00 207 -8.00 0.0277
2023-02-15 2022-12-31 13F AMGEN INC COM Stock 031162100 857 857 225 0.0320
2021-10-19 2021-09-30 13F AMGEN INC COM Stock 031162100 0 -914 -100.00 0 -100.00
2021-07-29 2021-06-30 13F AMGEN INC COM Stock 031162100 914 43 4.94 223 2.76 0.0611
2021-05-17 2021-03-31 13F AMGEN INC COM Stock 031162100 871 0 0.00 217 8.50 0.0709
2021-02-16 2020-12-31 13F AMGEN INC COM Stock 031162100 871 -4,551 -83.94 200 -85.49 0.0653
2020-11-16 2020-09-30 13F AMGEN INC COM Stock 031162100 5,422 -942 -14.80 1,378 -8.19 0.5609
2020-08-14 2020-06-30 13F AMGEN INC COM Stock 031162100 6,364 -787 -11.01 1,501 3.52 0.6732
2020-05-15 2020-03-31 13F AMGEN INC COM Stock 031162100 7,151 -770 -9.72 1,450 -24.08 0.9461
2020-02-14 2019-12-31 13F AMGEN INC COM Stock 031162100 7,921 59 0.75 1,910 25.58 1.0675
2019-11-14 2019-09-30 13F AMGEN INC COM Stock 031162100 7,862 -129 -1.61 1,521 3.26 0.9004
2019-08-14 2019-06-30 13F AMGEN INC COM Stock 031162100 7,991 287 3.73 1,473 0.61 0.9160
2019-05-14 2019-03-31 13F AMGEN INC COM Stock 031162100 7,704 -32,541 -80.86 1,464 -81.31 0.9481
2019-02-14 2018-12-31 13F AMGEN Stock 031162100 40,245 -3,118 -7.19 7,835 -12.84 1.1081
2018-11-14 2018-09-30 13F AMGEN Stock 031162100 43,363 4,151 10.59 8,989 24.19 1.2559
2018-08-20 2018-06-30 13F AMGEN Stock 031162100 39,212 -4,985 -11.28 7,238 -3.94 1.1616
2018-05-14 2018-03-31 13F AMGEN Stock 031162100 44,197 -3,260 -6.87 7,535 -8.70 1.1816
2018-02-22 2017-12-31 13F AMGEN Stock 031162100 47,457 7,231 17.98 8,253 10.04 1.2423
2017-11-15 2017-09-30 13F AMGEN Stock 031162100 40,226 -506 -1.24 7,500 6.91 1.3529
2017-08-14 2017-06-30 13F AMGEN Stock 031162100 40,732 -612 -1.48 7,015 3.42 1.2441
2017-05-17 2017-03-31 13F AMGEN Stock 031162100 41,344 38,467 1,337.05 6,783 1,511.16 1.1966
2017-02-17 2016-12-31 13F AMGEN Stock 031162100 2,877 0 0.00 421 -12.29 0.0842
2016-11-14 2016-09-30 13F AMGEN Stock 031162100 2,877 670 30.36 480 42.86 0.1085
2016-07-25 2016-06-30 13F AMGEN Stock 031162100 2,207 0 0.00 336 1.51 0.0828
2016-05-19 2016-03-31 13F AMGEN Stock 031162100 2,207 0 0.00 331 -7.54 0.0841
2016-02-10 2015-12-31 13F AMGEN Stock 031162100 2,207 75 3.52 358 21.36 0.0885
2015-11-12 2015-09-30 13F AMGEN Stock 031162100 2,132 2,132 295 0.0736
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.