STOCK TITAN

Merck (MRK) HR chief exercises RSUs and withholds 5,858 shares for taxes

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Merck & Co., Inc. executive vice president and Chief HR Officer Betty D. Larson reported routine equity compensation activity over two days. She exercised restricted stock units to acquire 13,435 shares of common stock at reference prices of $110.95 and $110.03 per share, and 5,858 shares were disposed of to cover tax obligations through share withholding rather than open-market sales.

Following these transactions, Larson directly owned 18,917 shares of Merck common stock. The filing reflects compensation-related derivative exercises and associated tax-withholding dispositions, without any open-market buying or selling.

Positive

  • None.

Negative

  • None.
Insider Larson Betty D
Role EVP, Chief HR Officer
Type Security Shares Price Value
Exercise Restricted Stock Unit 11,350 $0.00 --
Exercise Common Stock 11,350 $110.95 $1.26M
Tax Withholding Common Stock 5,143 $110.95 $571K
Exercise Restricted Stock Unit 2,085 $0.00 --
Exercise Common Stock 2,085 $110.03 $229K
Tax Withholding Common Stock 715 $110.03 $79K
Holdings After Transaction: Restricted Stock Unit — 11,350 shares (Direct, null); Common Stock — 18,917 shares (Direct, null)
Footnotes (1)
  1. 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 4/29/2026, 4/29/2027 and 4/29/2028. 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.
RSU shares exercised 13,435 shares Total derivative exercises reported for Merck common stock
Shares withheld for taxes 5,858 shares Tax-withholding dispositions on Merck common stock
Price reference 1 $110.95 per share Common stock transactions on 2026-04-30
Price reference 2 $110.03 per share Common stock transactions on 2026-04-29
Direct holdings after transactions 18,917 shares Common stock directly owned by Betty D. Larson
Tax-withholding transaction count 2 transactions Code F dispositions for tax liabilities
Derivative exercises count 2 transactions Code M exercises of restricted stock units
Restricted Stock Unit financial
"The filing reports transactions involving “Restricted Stock Unit” awards converting into common stock."
A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.
tax-withholding disposition financial
"Some transactions are described as a “tax-withholding disposition” to satisfy tax liabilities."
A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.
derivative exercise/conversion financial
"The Form 4 labels certain entries as “derivative exercise/conversion” of equity awards."
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Larson Betty D

(Last)(First)(Middle)
126 EAST LINCOLN AVENUE

(Street)
RAHWAY NEW JERSEY 07065

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Merck & Co., Inc. [ MRK ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP, Chief HR Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/29/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock04/29/2026M2,085A$110.038,282D
Common Stock04/29/2026F715D$110.037,567D
Common Stock04/30/2026M11,350A$110.9518,917D
Common Stock04/30/2026F5,143D$110.9513,774D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Unit(1)04/29/2026M2,08504/29/2026(2)04/29/2028Common Stock2,085$04,172D
Restricted Stock Unit(1)04/30/2026M11,35004/30/2025(3)04/30/2027Common Stock11,350$011,350D
Explanation of Responses:
1. Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.
2. 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.
3. 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.
/s/ Kelly E. W. Grez as Attorney-in-Fact for Betty Larson05/01/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did Merck (MRK) executive Betty D. Larson report?

Betty D. Larson reported exercising restricted stock units into Merck common shares and related tax-withholding dispositions. She acquired 13,435 shares through derivative exercises, while 5,858 shares were surrendered to cover tax liabilities, indicating compensation-driven activity rather than open-market trading.

Did Merck (MRK) executive Betty D. Larson sell shares in the open market?

The filing shows no open-market sales by Betty D. Larson. Instead, 5,858 shares of Merck common stock were disposed of through tax-withholding transactions, where shares are withheld to satisfy tax obligations linked to equity awards rather than sold on the open market.

How many Merck (MRK) shares does Betty D. Larson own after these Form 4 transactions?

After the reported transactions, Betty D. Larson directly owned 18,917 shares of Merck common stock. This figure reflects the net result of exercising restricted stock units and the associated tax-withholding share dispositions recorded in the Form 4 filing.

What prices were used in Betty D. Larson’s Merck (MRK) Form 4 transactions?

The Form 4 lists transaction prices of $110.95 and $110.03 per share for Merck common stock. These prices are reference amounts tied to the derivative exercises and tax-withholding dispositions, rather than traditional open-market purchase or sale prices.

What do the restricted stock unit exercises mean for Merck (MRK) executive compensation?

The reported restricted stock unit exercises reflect equity compensation vesting for Betty D. Larson. She converted 13,435 restricted stock units into common shares, with part of the shares withheld for taxes, illustrating how Merck delivers a portion of executive pay in stock-based awards.

How many shares were withheld for taxes in the Merck (MRK) Form 4 filing?

The filing shows that 5,858 shares of Merck common stock were disposed of in tax-withholding transactions. These share withholdings serve to satisfy tax liabilities triggered by the vesting or exercise of restricted stock units, without involving open-market sales.