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Shares Outstanding for Amgen (AMGN)

According to Amgen's latest reported financial statements, the company's latest reported diluted shares outstanding is 543.00M. Diluted weighted-average shares outstanding is the share count used to compute per-share metrics like EPS. Buybacks lower it; new issuance, stock-based compensation, and convertible securities raise it. Multiply by the stock price for market capitalization.

Headline figure above is from the reporting period ending (reported ). Chart and table below cover the full reported history back to .

Amgen Inc. logo
Amgen

AMGN

Latest period

543.00M

YoY change

+0.2%

5Y CAGR

-1.7%

Peak year (2003)

1.35B

Latest annual

542.00M

Shares Outstanding history chart for Amgen (AMGN) from 1985 to 2025

Shares Outstanding history table for Amgen (AMGN) from 1985 to 2025

Fiscal yearPeriod endedReportedShares OutstandingYoY
2025542.00M+0.2%
2024541.00M+0.6%
2023538.00M-0.6%
2022541.00M-5.6%
2021573.00M-2.9%
2020590.00M-3.1%
2019609.00M-8.4%
2018665.00M-9.5%
2017735.00M-2.5%
2016754.00M-1.6%
2015766.00M-0.5%
2014770.00M+0.7%
2013765.00M-2.8%
2012787.00M-13.7%
2011912.00M-5.5%
2010965.00M-5.5%
20091.02B-5.0%
20081.07B-4.3%
20071.12B-5.6%
20061.19B-5.4%
20051.26B-4.7%
20041.32B-1.9%
20031.35B+16.7%
20021.15B+6.4%
20011.08B-0.0%
20001.08B+0.6%
19991.08B+2.0%
19981.06B-3.7%
19971.10B-2.2%
19961.12B-1.5%
19951.14B+1.1%
19941.13B+3.1%
19931.10B-5.1%
19921.15B+6.0%
19911.09B+70.9%
1990636.67M
1988820.00M-12.8%
1987940.86M0.0%
1986940.86M+62.0%
1985580.90M

Shares Outstanding values are taken from Amgen's reported income statements (10-Q quarterly and 10-K annual filings with the U.S. Securities and Exchange Commission). Each row shows the period end date and the date the filing was reported; YoY compares each figure to the same period one year earlier. Amounts are in USD as filed.

Analysis

Amgen (AMGN) most recent annual diluted shares outstanding stands at 542.00M (2025) – edged up 0.2% year-over-year.

Looking at the 2020–2025 (5 years) stretch, Amgen diluted shares outstanding compounded at -1.7% per year, sustaining 2 straight years of year-over-year growth.

Between 2003 and 2025, Amgen diluted shares outstanding plunged 59.7%, falling from 1.35B to 542.00M.

Across the available history, diluted shares outstanding reached its high of 1.35B in 2003 and its low of 538.00M in 2023.

Among 8 Healthcare peers, Amgen (AMGN) ranks 8th; the peer median for diluted shares outstanding is 1.34B.

Amgen Shares Outstanding by Year

Amgen Shares Outstanding 2025: 542.00M

Amgen diluted shares outstanding in 2025 was 542.00M, edged up 0.2% from 2024.

Amgen Shares Outstanding 2024: 541.00M

Amgen diluted shares outstanding in 2024 was 541.00M, edged up 0.6% from 2023.

Amgen Shares Outstanding 2023: 538.00M

Amgen diluted shares outstanding in 2023 was 538.00M, edged down 0.6% below 2022. This figure represents the lowest annual value in the available history.

Amgen Shares Outstanding 2022: 541.00M

Amgen diluted shares outstanding in 2022 was 541.00M, declined 5.6% below 2021.

Amgen Shares Outstanding 2021: 573.00M

Amgen diluted shares outstanding in 2021 was 573.00M.

See more financial history for Amgen (AMGN).

Sector peers — Shares Outstanding

Companies in the same sector as Amgen, ranked by their latest diluted shares outstanding.

CompanyShares OutstandingSector
Novo Nordisk A/S (NVO)4.45BHealthcare
Merck & Co., Inc. (MRK)2.51BHealthcare
Johnson & Johnson (JNJ)2.43BHealthcare
AbbVie Inc. (ABBV)1.77BHealthcare
UnitedHealth Group Incorporated (UNH)910.00MHealthcare
Eli Lilly and Company (LLY)898.00MHealthcare
AstraZeneca PLC (AZN)781.00MHealthcare
Thermo Fisher Scientific Inc. (TMO)377.00MHealthcare

Frequently asked questions

What is Amgen's diluted shares outstanding?

Latest reported diluted shares outstanding for Amgen (AMGN) is 543.00M (period ending December 31, 2025).

How has Amgen diluted shares outstanding changed year-over-year?

Amgen (AMGN) diluted shares outstanding changed +0.2% year-over-year on the latest annual filing.

What is the long-term growth rate of Amgen diluted shares outstanding?

Amgen (AMGN) diluted shares outstanding compound annual growth rate is -1.7% over the most recent 5 years available.

When did Amgen diluted shares outstanding hit its highest annual value?

Amgen diluted shares outstanding reached its highest annual value of 1.35B in 2003.

What was Amgen diluted shares outstanding in 2024?

Amgen (AMGN) diluted shares outstanding in 2024 was 541.00M.

What was Amgen diluted shares outstanding in 2025?

Amgen (AMGN) diluted shares outstanding in 2025 was 542.00M.

Metrics overview

Pick a metric for charts, filings, and peers — each row shows the latest TTM or annual value with year-over-year change.