Was the McKesson (MCK) CEO’s share sale under a Rule 10b5-1 plan?

Yes. The CEO’s sale was made under a pre-established Rule 10b5-1(c) trading plan. A footnote states the sale was pursuant to a previously adopted plan dated December 15, 2025, indicating it was pre-arranged rather than discretionary.

McKesson (NYSE: MCK) CEO sells 4,929 shares under 10b5-1 plan

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

McKesson Corporation’s Chief Executive Officer Brian S. Tyler reported an open-market sale of 4,929 shares of Common Stock at 763.00 per share on June 9, 2026, under a previously adopted Rule 10b5-1(c) trading plan. Following the sale, he directly holds 22,845 shares and has an additional 215.7489 shares held indirectly through the McKesson Corporation 401(k) Retirement Savings Plan.

Insider Trade Summary 10b5-1

Net Seller: 4,929 shares ($3,760,827)

Net Sell 2 txns

Insider TYLER BRIAN S.

Role Chief Executive Officer

Sold 4,929 shs ($3.76M)

Type	Security	Shares	Price	Value
Sale	Common Stock	4,929	$763.00	$3.76M
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 22,845 shares (Direct, null); Common Stock — 215.749 shares (Indirect, By the McKesson Corporation 401(k) Retirement Savings Plan)

Footnotes (1)

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Key Figures

Shares sold: 4,929 shares Sale price per share: 763.00 per share Direct holdings after sale: 22,845 shares +2 more

5 metrics

Shares sold 4,929 shares Open-market sale on June 9, 2026

Sale price per share 763.00 per share Common Stock transaction code S

Direct holdings after sale 22,845 shares Common Stock directly owned post-transaction

Indirect 401(k) holdings 215.7489 shares Held by McKesson Corporation 401(k) Retirement Savings Plan

Reported transaction count 1 sale, 1 holding entry Form 4 transactionSummary net-sell

Key Terms

Rule 10b5-1(c), open-market sale, Common Stock, 401(k) Retirement Savings Plan

4 terms

Rule 10b5-1(c) regulatory

"Sale pursuant to a previously adopted plan dated December 15, 2025, in compliance with Rule 10b5-1(c)."

Rule 10b5-1(c) is an SEC guideline that lets company insiders set up a written, pre-planned schedule to buy or sell their company stock when they are not in possession of material, nonpublic information. For investors, it matters because such plans can reduce the appearance of insider trading by separating decisions from inside knowledge—like putting your trades on autopilot—while also requiring scrutiny since pre-planned trades can still affect market confidence and share value.

open-market sale financial

"transaction_action: open-market sale; transaction_code_description: Sale in open market or private transaction"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: Common Stock for the reported transactions"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

401(k) Retirement Savings Plan financial

"By the McKesson Corporation 401(k) Retirement Savings Plan"

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Form 4 Insider Transactions: What Each Field Means →

06/11/2026 - 10:30 AM

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
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^*

TYLER BRIAN S.

(Last)

(First)

(Middle)

6555 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)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/09/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/09/2026		S		4,929⁽¹⁾	D	$763	22,845	D
Common Stock								215.7489	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Sale pursuant to a previously adopted plan dated December 15, 2025, in compliance with Rule 10b5-1(c).

	/s/ Sarah Ahmad Ali, Attorney-in-fact	06/11/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did McKesson (MCK) report for CEO Brian Tyler?

McKesson reported that CEO Brian S. Tyler sold 4,929 shares of Common Stock. The transaction was an open-market sale at 763.00 per share on June 9, 2026, as disclosed in a Form 4 filing.

At what price did McKesson (MCK) CEO Brian Tyler sell shares?

Brian S. Tyler sold McKesson Common Stock at 763.00 per share. The Form 4 shows an open-market sale of 4,929 shares on June 9, 2026, reflecting a single reported sale price for the transaction.

How many McKesson (MCK) shares does CEO Brian Tyler hold after the sale?

After the sale, Brian S. Tyler directly holds 22,845 McKesson shares. The filing also shows an additional 215.7489 shares held indirectly through the McKesson Corporation 401(k) Retirement Savings Plan as of the reported date.

What ownership types are disclosed for McKesson (MCK) CEO Brian Tyler’s holdings?

The filing shows both direct and indirect ownership for Brian S. Tyler. He directly owns 22,845 shares of Common Stock and indirectly owns 215.7489 shares through the McKesson Corporation 401(k) Retirement Savings Plan.