#1 These shares include the following Restricted Stock Units (RSUs) granted under the Company's equity plans: 1,180 RSUs which will vest on 5/5/2024; 1,363 RSUs which will vest on 4/30/2025; 2,611 RSUs which will vest in installments of 1,286 on 5/2/2025, and 1,325 on 5/2/2026; and 3,814 RSUs which will vest in installments of 1,258 on 5/2/2025, 1,259 on 5/2/2026, and 1,297 on 5/2/2027. Vested RSUs will be paid in shares of the Company's common stock on a one-to-one basis.

#2 These shares include 607 Dividend Equivalents (DEs) granted pursuant to the Amgen Inc. Amended and Restated 2009 Equity Incentive Plan and subject to a qualifying dividend reinvestment plan. DEs are credited to the reporting person's unvested RSUs and are paid out in shares of the Company's common stock on a one-to-one basis according to the vesting schedule, along with a cash payment for any remaining fractional share amount.

#1 The Restricted Stock Units (RSUs) were granted pursuant to the Amgen Inc. 2009 Amended and Restated Equity Incentive Plan and vest in three annual installments of 33%, 33% and 34% on 5/7/2026, 5/7/2027 and 5/7/2028, respectively.

#2 These shares include the following Restricted Stock Units (RSUs) granted under the Company's equity plans: 1,363 RSUs which will vest on 4/30/2025; 2,611 RSUs which will vest in installments of 1,286 on 5/2/2025, 1,325 on 5/2/2026; 3,814 RSUs which will vest in installments of 1,258 on 5/2/2025, 1,259 on 5/2/2026, and 1,297 on 5/2/2027; and 3,196 RSUs which will vest in installments of 1,054 on 5/7/2026, 1,055 on 5/7/2027, and 1,087 on 5/7/2028. Vested RSUs will be paid in shares of the Company's common stock on a one-to-one basis.

#3 These shares include 449 Dividend Equivalents (DEs) granted pursuant to the Amgen Inc. Amended and Restated 2009 Equity Incentive Plan and subject to a qualifying dividend reinvestment plan. DEs are credited to the reporting person's unvested RSUs and are paid out in shares of the Company's common stock on a one-to-one basis according to the vesting schedule, along with a cash payment for any remaining fractional share amount.

#1 These shares include the following Restricted Stock Units (RSUs) granted under the Company's equity plans: 1,180 RSUs which will vest on 5/5/2024; 2,685 RSUs which will vest in installments of 1,322 on 4/30/2024 and 1,363 on 4/30/2025; 3,897 RSUs which will vest in two installments of 1,286 each on 5/2/2024 and 5/2/2025, and one installment of 1,325 on 5/2/2026; and 3,814 RSUs which will vest in installments of 1,258 on 5/2/2025, 1,259 on 5/2/2026, and 1,297 on 5/2/2027. Vested RSUs will be paid in shares of the Company's common stock on a one-to-one basis.

#2 These shares include 715 Dividend Equivalents (DEs) granted pursuant to the Amgen Inc. Amended and Restated 2009 Equity Incentive Plan and subject to a qualifying dividend reinvestment plan. DEs are credited to the reporting person's unvested RSUs and are paid out in shares of the Company's common stock on a one-to-one basis according to the vesting schedule, along with a cash payment for any remaining fractional share amount.

#1 These shares include the following Restricted Stock Units (RSUs) granted under the Company's equity plans: 1,180 RSUs which will vest on 5/5/2024; 2,685 RSUs which will vest in installments of 1,322 on 4/30/2024 and 1,363 on 4/30/2025; 3,897 RSUs which will vest in two installments of 1,286 each on 5/2/2024 and 5/2/2025, and one installment of 1,325 on 5/2/2026; and 3,814 RSUs which will vest in installments of 1,258 on 5/2/2025, 1,259 on 5/2/2026, and 1,297 on 5/2/2027. Vested RSUs will be paid in shares of the Company's common stock on a one-to-one basis.

#2 These shares include 829 Dividend Equivalents (DEs) granted pursuant to the Amgen Inc. Amended and Restated 2009 Equity Incentive Plan and subject to a qualifying dividend reinvestment plan. DEs are credited to the reporting person's unvested RSUs and are paid out in shares of the Company's common stock on a one-to-one basis according to the vesting schedule, along with a cash payment for any remaining fractional share amount.