Chattopadhyay Sanat

SEC source: 0001193125-26-410736 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,407

Underlying: Common Stock · 212 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1.

F2 · kind: Common Stock Units acquired pursuant to Ashland's Deferred Compensation Plan for Non-Employee Directors (the "Plan") and exempt under Rule 16b-3. (One (1) Common Stock Unit in the Plan is the equivalent of one (1) share of Ashland Common Stock.)

F3 · derivative.exercise_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F3 · derivative.expiration_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F4 · balance_after: Balance includes additional Common Stock Units acquired in lieu of cash dividends.

SEC source: 0001193125-26-292647 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,182

Underlying: Common Stock · 218 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1.

F2 · kind: Common Stock Units acquired pursuant to Ashland's Deferred Compensation Plan for Non-Employee Directors (the "Plan") and exempt under Rule 16b-3. (One (1) Common Stock Unit in the Plan is the equivalent of one (1) share of Ashland Common Stock.)

F3 · derivative.exercise_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F3 · derivative.expiration_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F4 · balance_after: Balance includes additional Common Stock Units acquired in lieu of cash dividends.

SEC source: 0000310158-26-000097 · form4.xml · derivative · entry 6

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,194

Underlying: Common Stock · 2,597 shares

Expires 2028-04-29

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F5 · derivative.exercise_date: These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 4/29/2026, 4/29/2027 and 4/29/2028.

SEC source: 0000310158-26-000097 · form4.xml · nonDerivative · entry 2

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,347

SEC source: 0000310158-26-000097 · form4.xml · nonDerivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,477

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-26-138015 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,952

Underlying: Common Stock · 258 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1.

F2 · kind: Common Stock Units acquired pursuant to Ashland's Deferred Compensation Plan for Non-Employee Directors (the "Plan") and exempt under Rule 16b-3. (One (1) Common Stock Unit in the Plan is the equivalent of one (1) share of Ashland Common Stock.)

F3 · derivative.exercise_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F3 · derivative.expiration_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F4 · balance_after: Balance includes additional Common Stock Units acquired in lieu of cash dividends.

SEC source: 0000310158-26-000008 · form4.xml · nonDerivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,880

F1 · shares: Distribution of net after tax shares of common stock on satisfaction of performance criteria for performance share units granted on 3/31/23. Performance shares were paid out at 94 percent of target awards. Includes dividends accrued over the three-year performance period ending December 31, 2025.

SEC source: 0001193125-26-018246 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,711

Underlying: Common Stock · 2,449 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Unit (RSU) represents a right to receive one (1) share of Ashland Common Stock.

F2 · derivative.exercise_date: Grant of stock-settled Restricted Stock Units granted under the Ashland Inc. Omnibus Incentive Plan. The Restricted Stock Units are deferred at the election of the Reporting Person under the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors until retirement from service as a director. The Restricted Stock Units will vest one year after the grant date. One (1) Restricted Stock Unit in the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors is the equivalent of one (1) share of Ashland Common Stock.

F2 · derivative.expiration_date: Grant of stock-settled Restricted Stock Units granted under the Ashland Inc. Omnibus Incentive Plan. The Restricted Stock Units are deferred at the election of the Reporting Person under the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors until retirement from service as a director. The Restricted Stock Units will vest one year after the grant date. One (1) Restricted Stock Unit in the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors is the equivalent of one (1) share of Ashland Common Stock.

F3 · balance_after: Balance includes additional Restricted Stock Units acquired in lieu of cash dividends.

SEC source: 0001193125-26-002511 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,679

Underlying: Common Stock · 245 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · kind: Common Stock Units acquired pursuant to Ashland's Deferred Compensation Plan for Non-Employee Directors (the "Plan") and exempt under Rule 16b-3. (One (1) Common Stock Unit in the Plan is the equivalent of one (1) share of Ashland Common Stock.)

F3 · derivative.exercise_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F3 · derivative.expiration_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F4 · balance_after: Balance includes additional Common Stock Units acquired in lieu of cash dividends.

SEC source: 0001193125-25-228408 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,425

Underlying: Common Stock · 300 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1.

F2 · kind: Common Stock Units acquired pursuant to Ashland's Deferred Compensation Plan for Non-Employee Directors (the "Plan") and exempt under Rule 16b-3. (One (1) Common Stock Unit in the Plan is the equivalent of one (1) share of Ashland Common Stock.)

F3 · derivative.exercise_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F3 · derivative.expiration_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F4 · balance_after: Balance includes additional Common Stock Units acquired in lieu of cash dividends.

SEC source: 0000950170-25-093037 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,116

Underlying: Common Stock · 286 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1.

F2 · kind: Common Stock Units acquired pursuant to Ashland's Deferred Compensation Plan for Non-Employee Directors (the "Plan") and exempt under Rule 16b-3. (One (1) Common Stock Unit in the Plan is the equivalent of one (1) share of Ashland Common Stock.)

F3 · derivative.exercise_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F3 · derivative.expiration_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

SEC source: 0001127602-25-013051 · form4.xml · derivative · entry 6

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,465

Underlying: Common Stock · 35,465 shares

Expires 2035-04-28

F7 · derivative.exercise_date: The option vests and becomes exercisable in three equal installments on 4/29/2026, 4/29/2027 and 4/29/2028.

SEC source: 0001127602-25-013051 · form4.xml · derivative · entry 5

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,791

Underlying: Common Stock · 7,791 shares

Expires 2028-04-29

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F6 · derivative.exercise_date: These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 4/29/2026, 4/29/2027 and 4/29/2028.

SEC source: 0000950170-25-048682 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 823

Underlying: Common Stock · 235 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1.

F2 · kind: Common Stock Units acquired pursuant to Ashland's Deferred Compensation Plan for Non-Employee Directors (the "Plan") and exempt under Rule 16b-3. (One (1) Common Stock Unit in the Plan is the equivalent of one (1) share of Ashland Common Stock.)

F3 · derivative.exercise_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F3 · derivative.expiration_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

SEC source: 0001127602-25-002336 · form4.xml · nonDerivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,758

F1 · shares: Distribution of net after tax shares of common stock on satisfaction of performance criteria for performance share units granted on 3/31/22. Performance shares were paid out at 169 percent of target awards. Includes dividends accrued over the three-year performance period ending December 31, 2024.

SEC source: 0000950170-25-008363 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,262

Underlying: Common Stock · 2,050 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Unit (RSU) represents a right to receive one (1) share of Ashland Common Stock.

F2 · derivative.exercise_date: Grant of stock-settled Restricted Stock Units granted under the Ashland Inc. Omnibus Incentive Plan. The Restricted Stock Units are deferred at the election of the Reporting Person under the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors until retirement from service as a director. The Restricted Stock Units will vest one year after the grant date. One (1) Restricted Stock Unit in the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors is the equivalent of one (1) share of Ashland Common Stock.

F2 · derivative.expiration_date: Grant of stock-settled Restricted Stock Units granted under the Ashland Inc. Omnibus Incentive Plan. The Restricted Stock Units are deferred at the election of the Reporting Person under the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors until retirement from service as a director. The Restricted Stock Units will vest one year after the grant date. One (1) Restricted Stock Unit in the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors is the equivalent of one (1) share of Ashland Common Stock.

F3 · balance_after: Balance includes additional Restricted Stock Units acquired in lieu of cash dividends.

SEC source: 0000950170-25-000474 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 583

Underlying: Common Stock · 175 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · kind: Common Stock Units acquired pursuant to Ashland's Deferred Compensation Plan for Non-Employee Directors (the "Plan") and exempt under Rule 16b-3. (One (1) Common Stock Unit in the Plan is the equivalent of one (1) share of Ashland Common Stock.)

F3 · derivative.exercise_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F3 · derivative.expiration_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F4 · balance_after: Balance includes additional Common Stock Units acquired in lieu of cash dividends.

SEC source: 0000950170-24-111503 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 406

Underlying: Common Stock · 144 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · kind: Common Stock Units acquired pursuant to Ashland's Deferred Compensation Plan for Non-Employee Directors (the "Plan") and exempt under Rule 16b-3. (One (1) Common Stock Unit in the Plan is the equivalent of one (1) share of Ashland Common Stock.)

F3 · derivative.exercise_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F3 · derivative.expiration_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F4 · balance_after: Balance includes additional Common Stock Units acquired in lieu of cash dividends.

SEC source: 0000950170-24-079662 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 261

Underlying: Common Stock · 132 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · kind: Common Stock Units acquired pursuant to Ashland's Deferred Compensation Plan for Non-Employee Directors (the "Plan") and exempt under Rule 16b-3. (One (1) Common Stock Unit in the Plan is the equivalent of one (1) share of Ashland Common Stock.)

F3 · derivative.exercise_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F3 · derivative.expiration_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F4 · balance_after: Balance includes additional Common Stock Units acquired in lieu of cash dividends.

SEC source: 0001127602-24-013943 · form4.xml · derivative · entry 5

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,672

Underlying: Common Stock · 38,672 shares

Expires 2034-04-29

F4 · derivative.exercise_date: The option vests and becomes exercisable in three equal installments on 4/30/2025, 4/30/2026 and 4/30/2027.

SEC source: 0000950170-24-039332 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128

Underlying: Common Stock · 128 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · kind: Common Stock Units acquired pursuant to Ashland's Deferred Compensation Plan for Non-Employee Directors (the "Plan") and exempt under Rule 16b-3. (One (1) Common Stock Unit in the Plan is the equivalent of one (1) share of Ashland Common Stock.)

F3 · derivative.exercise_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

F3 · derivative.expiration_date: Subject to any deferral election on timing of distribution by the reporting person under the Plan, the Common Stock Units are payable in Common Stock upon the reporting person's separation from service as a director.

SEC source: 0000950170-24-007540 · ownership.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,173

Underlying: Common Stock · 1,897 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Unit (RSU) represents a right to receive one (1) share of Ashland Common Stock.

F2 · derivative.exercise_date: Grant of stock-settled Restricted Stock Units granted under the Ashland Inc. Omnibus Incentive Plan. The Restricted Stock Units are deferred at the election of the Reporting Person under the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors until retirement from service as a director. The Restricted Stock Units will vest one year after the grant date. One (1) Restricted Stock Unit in the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors is the equivalent of one (1) share of Ashland Common Stock.

F2 · derivative.expiration_date: Grant of stock-settled Restricted Stock Units granted under the Ashland Inc. Omnibus Incentive Plan. The Restricted Stock Units are deferred at the election of the Reporting Person under the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors until retirement from service as a director. The Restricted Stock Units will vest one year after the grant date. One (1) Restricted Stock Unit in the Ashland Inc. Deferred Compensation Plan for Non-Employee Directors is the equivalent of one (1) share of Ashland Common Stock.

F3 · balance_after: Balance includes additional Restricted Stock Units acquired in lieu of cash dividends.

SEC source: 0001127602-24-002015 · form4.xml · nonDerivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,716

F1 · shares: Distribution of net after tax shares of common stock on satisfaction of performance criteria for performance share units granted on 3/31/21. Performance shares were paid out at 161 percent of target awards. Includes dividends accrued over the three-year performance period ending December 31, 2023.

SEC source: 0001127602-23-027394 · form4.xml · derivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 275

Underlying: Common Stock · 275 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Unit represents a right to receive one (1) share of Ashland Common Stock.

F2 · derivative.exercise_date: Grant of stock-settled Restricted Stock Units granted under Ashland's Omnibus Incentive Plan and deferred under Ashland's Deferred Compensation Plan for Non-Employee Directors, and exempt under Rule 16b-3. The Restricted Stock Units will vest one year after date of grant. (One (1) Restricted Stock Unit in the Deferred Compensation Plan for Non-Employee Directors is the equivalent of one (1) share of Ashland Common Stock.)

F2 · derivative.expiration_date: Grant of stock-settled Restricted Stock Units granted under Ashland's Omnibus Incentive Plan and deferred under Ashland's Deferred Compensation Plan for Non-Employee Directors, and exempt under Rule 16b-3. The Restricted Stock Units will vest one year after date of grant. (One (1) Restricted Stock Unit in the Deferred Compensation Plan for Non-Employee Directors is the equivalent of one (1) share of Ashland Common Stock.)

SEC source: 0001127602-23-014567 · form4.xml · derivative · entry 5

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,643

Underlying: Common Stock · 45,643 shares

Expires 2033-05-01

F4 · derivative.exercise_date: The option vests and becomes exercisable in equal installments on 5/2/2024, 5/2/2025 and 5/2/2026.

SEC source: 0001127602-23-012932 · form4.xml · derivative · entry 9

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 66,163 shares

Expires 2027-05-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: Exercise price and holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck stock option awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

F9 · derivative.exercise_date: The option became exercisable in equal installments on 5/5/2018, 5/5/2019 and 5/5/2020.

SEC source: 0001127602-23-012932 · form4.xml · derivative · entry 8

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 67,892 shares

Expires 2028-05-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: Exercise price and holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck stock option awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

F8 · derivative.exercise_date: The option became exercisable in equal installments on 5/4/2019, 5/4/2020, and 5/4/2021.

SEC source: 0001127602-23-012932 · form4.xml · nonDerivative · entry 4

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The exercise and sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $115.0000 to $115.3300, inclusive. The reporting person undertakes to provide to Merck & Co., Inc., any security holder of Merck & Co., Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above in this footnote.

SEC source: 0001127602-23-012932 · form4.xml · nonDerivative · entry 3

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,892

F1 · kind: The exercise and sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $115.0000 to $115.1900, inclusive. The reporting person undertakes to provide to Merck & Co., Inc., any security holder of Merck & Co., Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above in this footnote.

SEC source: 0001127602-23-012932 · form4.xml · nonDerivative · entry 2

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 134,055

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-012932 · form4.xml · nonDerivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,892

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-002193 · form4.xml · nonDerivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,995

F1 · shares: Distribution of net after tax shares of common stock on satisfaction of performance criteria for performance share units granted on 3/31/20. Performance shares were paid out at 110 percent of target awards. Includes dividends accrued over the three-year performance period ending December 31, 2022.

SEC source: 0001127602-23-001274 · form4.xml · derivative · entry 9

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 83,994 shares

Expires 2026-05-09

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F9 · derivative.exercise_price: Exercise price and holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck stock option awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

F10 · derivative.exercise_date: The option became exercisable in equal installments on 5/10/2017, 5/10/2018 and 5/10/2019.

SEC source: 0001127602-23-001274 · form4.xml · nonDerivative · entry 6

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,500

F1 · kind: The exercise and sale transactions reported in this Form 4 are made pursuant to Rule 10b5-1 trading plan.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.3700 to $114.5800, inclusive. The reporting person undertakes to provide to Merck & Co., Inc., any security holder of Merck & Co., Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above in this footnote.

SEC source: 0001127602-23-001274 · form4.xml · nonDerivative · entry 5

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,202

F1 · kind: The exercise and sale transactions reported in this Form 4 are made pursuant to Rule 10b5-1 trading plan.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $113.3500 to $114.3500, inclusive. The reporting person undertakes to provide to Merck & Co., Inc., any security holder of Merck & Co., Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above in this footnote.

SEC source: 0001127602-23-001274 · form4.xml · nonDerivative · entry 4

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,418

F1 · kind: The exercise and sale transactions reported in this Form 4 are made pursuant to Rule 10b5-1 trading plan.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $112.3200 to $113.3100, inclusive. The reporting person undertakes to provide to Merck & Co., Inc., any security holder of Merck & Co., Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above in this footnote.

SEC source: 0001127602-23-001274 · form4.xml · nonDerivative · entry 3

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 73,358

F1 · kind: The exercise and sale transactions reported in this Form 4 are made pursuant to Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.2800 to $112.2100, inclusive. The reporting person undertakes to provide to Merck & Co., Inc., any security holder of Merck & Co., Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above in this footnote.

SEC source: 0001127602-23-001274 · form4.xml · nonDerivative · entry 2

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,896

F1 · kind: The exercise and sale transactions reported in this Form 4 are made pursuant to Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $110.2600 to $111.2000, inclusive. The reporting person undertakes to provide to Merck & Co., Inc., any security holder of Merck & Co., Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above in this footnote.

SEC source: 0001127602-23-001274 · form4.xml · nonDerivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 113,494

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-024629 · form4.xml · derivative · entry 8

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 51,055 shares

Expires 2025-04-30

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Exercise price and holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck stock option awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

F7 · derivative.exercise_date: The option became exercisable in equal installments on 5/1/2016, 5/1/2017 and 5/1/2018.

F5 · balance_after: Exercise price and holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck stock option awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

SEC source: 0001127602-22-024629 · form4.xml · derivative · entry 7

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 34,024 shares

Expires 2024-05-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Exercise price and holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck stock option awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

F6 · derivative.exercise_date: The option became exercisable in equal installments on 5/2/2015, 5/2/2016 and 5/2/2017.

F5 · balance_after: Exercise price and holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck stock option awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

SEC source: 0001127602-22-024629 · form4.xml · derivative · entry 6

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 15,213 shares

Expires 2023-05-05

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: The option became exercisable in equal installments on 5/6/2014, 5/6/2015 and 5/6/2016.

SEC source: 0001127602-22-024629 · form4.xml · nonDerivative · entry 4

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,608.357

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $99.9650 to $100.3400, inclusive. The reporting person undertakes to provide to Merck & Co., Inc., any security holder of Merck & Co., Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above in this footnote.

F2 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-024629 · form4.xml · nonDerivative · entry 3

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 145,900.357

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-024629 · form4.xml · nonDerivative · entry 2

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 94,845.357

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-024629 · form4.xml · nonDerivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,821.357

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-013512 · form4.xml · derivative · entry 2

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,252

Underlying: Common Stock · 58,252 shares

Expires 2032-05-02

F2 · derivative.exercise_date: The option vests and becomes exercisable in equal installments on 5/3/2023, 5/3/2024 and 5/3/2025.

SEC source: 0001127602-22-007000 · form4.xml · nonDerivative · entry 1

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,981.357

F1 · shares: Distribution of net after tax shares of common stock on satisfaction of performance criteria for performance share units granted on 3/29/19. Performance shares were paid out at 140 percent of target awards. Includes dividends accrued over the three-year performance period ending December 31, 2021.

F2 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-21-028167 · form4.xml · derivative · entry 3

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,213

Underlying: Common Stock · 24,619 shares

Expires 2023-05-05

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Exercise price and holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck stock option awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

F4 · derivative.exercise_date: The option became exercisable in equal installments on 5/6/2014, 5/6/2015 and 5/6/2016.

F3 · balance_after: Exercise price and holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck stock option awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

SEC source: 0001127602-21-028167 · form4.xml · nonDerivative · entry 2

Chattopadhyay Sanat · CIK 0001670690 · Exe V-P & Pres. MMD

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,145.357

F1 · kind: The exercise and sale transactions reported in this Form 4 are made pursuant to Rule 10b5-1 trading plan.

F2 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.