[Form 4] MCKESSON CORP Insider Trading Activity

Rhea-AI Filing Summary

McKesson EVP and Chief Legal Officer Michele Lau reported routine equity compensation activity. On May 21, 2026, she exercised 724 Restricted Stock Units into the same number of common shares. To cover taxes on this RSU vesting, 285 shares were withheld at $766.50 per share, a non-market transaction. After these changes, she holds 6,797 common shares directly and 139.0229 shares indirectly through the McKesson Corporation 401(k) Retirement Savings Plan, plus 725 RSUs that continue to vest through May 21, 2027.

Insights

Equity compensation analyst

Routine RSU vesting with share withholding for taxes; no open-market trading.

Michele Lau exercised 724 RSUs into common stock and had 285 shares withheld at $766.50 per share to satisfy tax obligations. This follows a standard RSU vesting schedule, with remaining RSUs vesting through May 21, 2027.

The transactions do not involve open-market buys or sells, so they mainly reflect compensation mechanics rather than a change in market view. Lau’s direct holdings rise to 6,797 shares, with additional indirect ownership through the company’s 401(k) plan and 725 RSUs still outstanding.

Insider Trade Summary

724 shares exercised/converted

Mixed 4 txns

Insider Lau Michele

Role EVP and Chief Legal Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units (RSUs)	724	$0.00	--
Exercise	Common Stock	724	$0.00	--
Tax Withholding	Common Stock	285	$766.50	$218K
holding	Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units (RSUs) — 725 shares (Direct, null); Common Stock — 7,082 shares (Direct, null); Common Stock — 139.023 shares (Indirect, By the McKesson Corporation 401(k) Retirement Savings Plan)

Footnotes (1)

1. This transaction represents a withholding of shares to cover taxes applicable to a vesting of RSUs also reported on this Form 4. These RSUs vested as to 1/3 on 5/21/2025, 1/3 on 5/21/2026 and will vest 1/3 on 5/21/2027.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED 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
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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^*

Lau Michele

(Last) (First) (Middle)

6555 NORTH STATE HWY 161

(Street)

IRVING TEXAS 75039

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MCKESSON CORP [ MCK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP and Chief Legal Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/21/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/21/2026		M		724	A	$0	7,082	D
Common Stock	05/21/2026		F		285(1)	D	$766.5	6,797	D
Common Stock								139.0229	I	By the McKesson Corporation 401(k) Retirement Savings Plan

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units (RSUs)	$0	05/21/2026		M			724	(2)	(2)	Common Stock	724	$0	725	D

Explanation of Responses:

1. This transaction represents a withholding of shares to cover taxes applicable to a vesting of RSUs also reported on this Form 4.

2. These RSUs vested as to 1/3 on 5/21/2025, 1/3 on 5/21/2026 and will vest 1/3 on 5/21/2027.

	/s/ Sarah Ahmad Ali, Attorney-in-fact	05/26/2026
	** Signature of Reporting Person	Date
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)