MRK · Merck & Co., Inc.

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Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

1-for-1

Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

Holdings include shares acquired in dividend reinvestment transactions.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

The option vests and becomes exercisable in equal installments on 5/5/2027, 5/5/2028, and, 5/5/2029.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/2/2024, 5/2/2025, and 5/2/2026.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/2/2024, 5/2/2025, and 5/2/2026.

Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 4/30/2025, 4/30/2026 and 4/30/2027.