McKesson (MCK) CEO’s 8,463-share sale executed under Rule 10b5-1 plan

Rhea-AI Filing Summary

McKesson Corporation Chief Executive Officer Brian S. Tyler reported an open-market sale of 8,463 shares of McKesson common stock on July 7, 2026 at an average price of $793.56 per share. The sale was made pursuant to a previously adopted trading plan dated December 15, 2025, in compliance with Rule 10b5-1(c), indicating it was pre-planned rather than a discretionary trade.

After this transaction, Tyler directly holds 5,919 shares of McKesson common stock. In addition, he has an indirect interest in 215.9211 shares held through the McKesson Corporation 401(k) Retirement Savings Plan. The filing shows a net-sell position for this report, with no derivative exercises disclosed.

Insights

Equity governance analyst

CEO’s sale is sizable but pre-planned under a Rule 10b5-1 plan.

McKesson’s CEO, Brian S. Tyler, sold 8,463 common shares at $793.56 in an open-market transaction. The filing specifies this was executed under a previously adopted Rule 10b5-1(c) plan dated December 15, 2025, suggesting a pre-scheduled liquidity event rather than a reactive move.

Following the sale, Tyler retains 5,919 shares directly and 215.9211 shares indirectly via the McKesson Corporation 401(k) Retirement Savings Plan. With no derivative positions reported and the sale plan disclosed, the informational signal mainly reflects routine portfolio management, though investors often note CEO-level stock sales for context.

Insider Trade Summary 10b5-1

Net Seller: 8,463 shares ($6,715,898)

Net Sell 2 txns

Insider TYLER BRIAN S.

Role Chief Executive Officer

Sold 8,463 shs ($6.72M)

Type	Security	Shares	Price	Value
Sale	Common Stock	8,463	$793.56	$6.72M
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 5,919 shares (Direct, null); Common Stock — 215.921 shares (Indirect, By the McKesson Corporation 401(k) Retirement Savings Plan)

Footnotes (1)

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Key Figures

Shares sold: 8,463 shares Average sale price: $793.56 per share Direct holdings after sale: 5,919 shares +3 more

6 metrics

Shares sold 8,463 shares Open-market sale on July 7, 2026

Average sale price $793.56 per share Price for common stock sold by CEO

Direct holdings after sale 5,919 shares Common stock held directly by CEO post-transaction

Indirect 401(k) holdings 215.9211 shares Held via McKesson Corporation 401(k) Retirement Savings Plan

Net buy/sell shares -8,463 shares Net-sell direction for this Form 4 report

Rule 10b5-1 plan date December 15, 2025 Adoption date of CEO’s trading plan

Key Terms

Rule 10b5-1(c), open-market sale, McKesson Corporation 401(k) Retirement Savings Plan, indirect ownership

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 for 8,463 shares of Common Stock."

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.

McKesson Corporation 401(k) Retirement Savings Plan financial

"By the McKesson Corporation 401(k) Retirement Savings Plan as indirect ownership."

indirect ownership financial

"Ownership type marked as indirect for 215.9211 shares held via the 401(k) plan."

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FAQ

What insider transaction did McKesson (MCK) disclose for CEO Brian S. Tyler?

McKesson disclosed that CEO Brian S. Tyler sold 8,463 shares of common stock in an open-market transaction at an average price of $793.56 per share. The sale was reported on a Form 4 insider filing for the transaction dated July 7, 2026.

Was the McKesson (MCK) CEO’s 8,463-share sale a pre-planned Rule 10b5-1 trade?

Yes. The filing states the sale was made pursuant to a previously adopted plan dated December 15, 2025, in compliance with Rule 10b5-1(c). Such plans allow executives to schedule trades in advance, reducing the significance of trade timing as a market signal.

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

After the transaction, Brian S. Tyler directly holds 5,919 shares of McKesson common stock. He also has an indirect interest in 215.9211 shares held through the McKesson Corporation 401(k) Retirement Savings Plan, as disclosed in the Form 4 filing.

What price did McKesson (MCK) CEO Brian S. Tyler receive for the sold shares?

The Form 4 reports that Brian S. Tyler sold 8,463 McKesson common shares at an average price of $793.56 per share. This average sale price reflects the execution of the shares in an open-market transaction under his pre-arranged trading plan.

Does the McKesson (MCK) Form 4 show any option exercises or derivative transactions?

No derivative transactions are listed in this Form 4. The filing only reports an open-market sale of 8,463 common shares and a holding entry for 215.9211 shares in the McKesson Corporation 401(k) Retirement Savings Plan, with no option exercises disclosed.

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).

X

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)
07/07/2026

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	07/07/2026		S		8,463(1)	D	$793.56	5,919	D
Common Stock								215.9211	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

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	07/08/2026
	** 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)