ARNST THOMAS W (EVP, Chief Admin. Officer & GC) sold 75.0% of their position (24K shares) of TENET HEALTHCARE CORP on the open market

Open‑market sale worth $5.62M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

ARNST THOMAS W

Filed: 3/3/2026ACC: 0001193125-26-089408

InsiderARNST THOMAS WCIK 1852128

→

IssuerTENET HEALTHCARE CORPCIK 70318

Officer· EVP, Chief Admin. Officer & GC

Since May 2021

-37.26K

Net shares

Net seller

$10.59M

Total sold

Open market trades

0B · 1S

Total transactions

18.72K acquired · 55.98K disposed

Non-Derivative Transactions6

Common Stock

Direct

M · Option Exercise

+5.60K

Price / share

—

Trade value

—

% of position

13.5%

2/27/2026

41.59K→47.19K

Common Stock

Direct

M · Option Exercise

+5.60K

Price / share

—

Trade value

—

% of position

11.9%

2/27/2026

47.19K→52.79K

Common Stock

Direct

F · Tax Withholding

−1.50K

Price / share

$237.58

Trade value

$355.42K

% of position

2.8%

2/27/2026

52.79K→51.29K

Common Stock

Direct

F · Tax Withholding

−4.41K

Price / share

$239.39

Trade value

$1.06M

% of position

8.6%

2/27/2026

51.29K→46.88K

Common Stock

Direct

F · Tax Withholding

−14.87K

Price / share

$239.39

Trade value

$3.56M

% of position

31.7%

2/27/2026

46.88K→32.01K

Common Stock

Direct

S · Sale

−24K

Price / share

$234.04

Trade value

$5.62M

% of position

75.0%

3/2/2026

32.01K→8.01K

Total

Net shares

−33.57K

Net value

-$10.59M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	2/27/2026	M · Option Exercise	+5.60K	—	—	13.5%	41.59K	47.19K
Common Stock Direct	2/27/2026	M · Option Exercise	+5.60K	—	—	11.9%	47.19K	52.79K
Common Stock Direct	2/27/2026	F · Tax Withholding	−1.50K	$237.58	$355.42K	2.8%	52.79K	51.29K
Common Stock Direct	2/27/2026	F · Tax Withholding	−4.41K	$239.39	$1.06M	8.6%	51.29K	46.88K
Common Stock Direct	2/27/2026	F · Tax Withholding	−14.87K	$239.39	$3.56M	31.7%	46.88K	32.01K
Common Stock Direct	3/2/2026	S · Sale	−24K	$234.04	$5.62M	75.0%	32.01K	8.01K
Total			−33.57K		-$10.59M

Derivative Transactions3

2026 February Restricted Stock Units

Direct

A · Award

Converts to

Common Stock

7.52K shares

+7.52K

Strike price

Held after

7.52K

Exercisable

—

2/27/2026

2024 February Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

5.60K shares

−5.60K

Strike price

Held after

5.61K

Exercisable

—

2/27/2026

2023 March Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

5.60K shares

−5.60K

Strike price

Held after

0.00

Exercisable

—

2/27/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
2026 February Restricted Stock Units Direct	Common Stock7.52K shares	2/27/2026	A · Award	+7.52K	—	7.52K
2024 February Restricted Stock Units Direct	Common Stock5.60K shares	2/27/2026	M · Option Exercise	−5.60K	—	5.61K
2023 March Restricted Stock Units Direct	Common Stock5.60K shares	2/27/2026	M · Option Exercise	−5.60K	—	0.00