Was the McKesson (MCK) CEO’s share sale part of a 10b5-1 trading plan?

Yes. The Form 4 states the sale was made pursuant to a previously adopted plan dated December 15, 2025, in compliance with Rule 10b5-1(c). Such plans pre-schedule trades, reducing the significance of short-term market timing.

McKesson (NYSE: MCK) CEO sells 8,463 shares under 10b5-1 trading plan

Filing Impact

(Very High)

Filing Sentiment

(Very Negative)

Form Type

Rhea-AI Filing Summary

McKesson Corporation Chief Executive Officer Brian S. Tyler reported an open-market sale of company stock. On June 17, 2026, he sold 8,463 shares of McKesson common stock at an average price of $775.13 per share in a transaction classified as a non-derivative sale.

The sale was carried out under a Rule 10b5-1(c) trading plan that was previously adopted on December 15, 2025, meaning it was pre-arranged rather than timed opportunistically. Following this sale, Tyler directly holds 14,382 shares of McKesson common stock and indirectly holds 215.7571 shares through the McKesson Corporation 401(k) Retirement Savings Plan.

Insider Trade Summary 10b5-1

Net Seller: 8,463 shares ($6,559,925)

Net Sell 2 txns

Insider TYLER BRIAN S.

Role Chief Executive Officer

Sold 8,463 shs ($6.56M)

Type	Security	Shares	Price	Value
Sale	Common Stock	8,463	$775.13	$6.56M
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 14,382 shares (Direct, null); Common Stock — 215.757 shares (Indirect, By the McKesson Corporation 401(k) Retirement Savings Plan)

Footnotes (1)

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Key Figures

Shares sold: 8,463 shares Sale price per share: $775.13 per share Direct holdings after sale: 14,382 shares +2 more

5 metrics

Shares sold 8,463 shares Common stock sold on June 17, 2026

Sale price per share $775.13 per share Average price for the 8,463 shares sold

Direct holdings after sale 14,382 shares Common stock directly owned post-transaction

Indirect 401(k) holdings 215.7571 shares Held via McKesson Corporation 401(k) Retirement Savings Plan

Transactions classified as sales 1 transaction Open-market sale reported in Form 4

Key Terms

Rule 10b5-1(c), open-market sale, non-derivative, McKesson Corporation 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"

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.

non-derivative financial

"transaction_type: non-derivative"

McKesson Corporation 401(k) Retirement Savings Plan financial

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

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Form 4 Insider Transactions: What Each Field Means →

06/18/2026 - 03:35 PM

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)
06/17/2026

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	06/17/2026		S		8,463⁽¹⁾	D	$775.13	14,382	D
Common Stock								215.7571	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	06/18/2026
	** 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) CEO Brian S. Tyler report?

McKesson CEO Brian S. Tyler reported selling 8,463 shares of common stock. The transaction was an open-market, non-derivative sale at an average price of $775.13 per share, reducing but not eliminating his direct ownership stake in McKesson.

At what price did the McKesson (MCK) CEO sell his shares?

Brian S. Tyler sold his McKesson shares at an average price of $775.13 each. This price applied to 8,463 common shares sold in an open-market transaction, as disclosed in the Form 4 insider trading report filed for June 17, 2026.

How many McKesson (MCK) shares does the CEO hold after this Form 4 sale?

After the reported sale, Brian S. Tyler directly holds 14,382 McKesson common shares. In addition, he indirectly holds 215.7571 shares through the McKesson Corporation 401(k) Retirement Savings Plan, according to the Form 4 disclosure.

What type of transaction is reported in this McKesson (MCK) Form 4?

The filing reports a non-derivative open-market sale of McKesson common stock by CEO Brian S. Tyler. It also includes a holding entry showing indirect ownership of 215.7571 shares through the McKesson Corporation 401(k) Retirement Savings Plan.

Does the McKesson (MCK) CEO have indirect holdings in company stock?

Yes. In addition to his direct holdings, Brian S. Tyler indirectly owns 215.7571 McKesson common shares. These shares are held through the McKesson Corporation 401(k) Retirement Savings Plan, as indicated by the indirect ownership entry in the Form 4.