Tenet director sells 10,000 shares at $263.42

Rhea-AI Filing Summary

Tenet Healthcare Corp (THC) director Richard J. Mark reported selling 10,000 shares of common stock on September 10, 2026 in an open-market transaction at a weighted average price of $263.42 per share, with individual trade prices ranging from $263.15 to $264.03. After this sale, he directly holds 25,121 shares of Tenet Healthcare common stock. No Rule 10b5-1 trading plan is indicated for this transaction.

Insider Trade Summary

Net Seller: 10,000 shares

Net Sell 1 txn

Insider MARK RICHARD J

Role Director

Sold 10,000 shs ($2.63M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	10,000	$263.42	$2.63M

Holdings After Transaction: Common Stock — 25,121 shares (Direct)

Footnotes (1)

1. F1. The price is the weighted average sales price of the aggregate number of shares that were sold by the reporting person. These shares were sold in multiple transactions at prices ranging from $263.15 to $264.03. The reporting person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

Key Figures

Shares sold: 10,000 shares Weighted average sale price: $263.42 per share Sale price range: $263.15–$264.03 per share +2 more

5 metrics

Shares sold 10,000 shares Common stock sale reported for September 10, 2026

Weighted average sale price $263.42 per share Average price across multiple sale transactions on September 10, 2026

Sale price range $263.15–$264.03 per share Range of prices for the multiple sale transactions

Shares held after transaction 25,121 shares Direct ownership following the reported sale

Net shares sold 10,000 shares Net selling activity in this Form 4

Key Terms

weighted average sales price, open market, Rule 10b5-1

3 terms

weighted average sales price financial

"The price is the weighted average sales price of the aggregate number"

open market financial

"Sale in open market or private transaction"

An open market is a system where buying and selling of goods, services, or financial assets happen freely without restrictions or special controls. For investors, it means they can trade assets easily and quickly, which helps determine fair prices based on supply and demand. This environment encourages transparency and competition, making it easier to buy or sell with confidence.

Rule 10b5-1 regulatory

"the staff of the Securities and Exchange Commission, upon request, full information"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did THC director Richard J. Mark report?

He reported a sale of 10,000 shares of Tenet Healthcare common stock on September 10, 2026 in an open-market transaction at a weighted average price of $263.42 per share, with prices ranging from $263.15 to $264.03.

How many THC shares does Richard J. Mark hold after this Form 4 transaction?

After the reported sale, Richard J. Mark directly holds 25,121 shares of Tenet Healthcare (THC) common stock, as stated in the Form 4 filing.

At what prices were Richard J. Mark’s THC shares sold on September 10, 2026?

The 10,000 shares were sold at a weighted average price of $263.42 per share. The filing notes multiple trades executed at prices ranging from $263.15 to $264.03 per share.

Was Richard J. Mark’s THC stock sale under a Rule 10b5-1 trading plan?

No. The Form 4 indicates the Rule 10b5-1 checkbox is not marked, so no Rule 10b5-1 trading plan is reported for this Tenet Healthcare stock sale.

What type of security did Richard J. Mark trade in this THC Form 4?

The transaction involved Tenet Healthcare common stock. No derivative securities are reported in this Form 4; the filing shows one non-derivative sale of 10,000 common shares.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/14/2026 - 08:00 PM Accepted by SEC EDGAR 09/14/2026 - 08:00 PM Learn about SEC filing dates

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^*

MARK RICHARD J

(Last) (First) (Middle)

14201 DALLAS PARKWAY

(Street)

DALLAS TEXAS 75254

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
TENET HEALTHCARE CORP [ THC ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2026

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	09/10/2026		S		10,000	D	$263.42(1)	25,121	D

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. The price is the weighted average sales price of the aggregate number of shares that were sold by the reporting person. These shares were sold in multiple transactions at prices ranging from $263.15 to $264.03. The reporting person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

	Chad J. Wiener, as Attorney-in-fact for Richard J. Mark	09/14/2026
	** 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)