MAHON PAUL A (EVP & GENERAL COUNSEL) sold 15.5% of their position (8.30K shares) of UNITED THERAPEUTICS CORP on the open market

Open‑market sale worth $4.49M — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 11 sales

MAHON PAUL A

Filed: 6/18/2026ACC: 0001231589-26-000014

InsiderMAHON PAUL ACIK 1231589

→

IssuerUNITED THERAPEUTICS CORPCIK 1082554

Officer· EVP & GENERAL COUNSEL

Since Mar 2026

-8.30K

Net shares

Net seller

$4.49M

Total sold

Open market trades

0B · 11S

Total transactions

8.30K acquired · 16.60K disposed

Non-Derivative Transactions12

Common Stock

Direct

M · Option Exercise

+8.30K

Price / share

$146.03

Trade value

$1.21M

% of position

18.4%

6/18/2026

45.17K→53.47K

Common Stock

Direct

S · Sale

−1.72K

Price / share

$537.04

Trade value

$921.03K

% of position

3.2%

6/18/2026

53.47K→51.76K

Common Stock

Direct

S · Sale

−958.00

Price / share

$538.03

Trade value

$515.43K

% of position

1.9%

6/18/2026

51.76K→50.80K

Common Stock

Direct

S · Sale

−1.30K

Price / share

$539.42

Trade value

$703.94K

% of position

2.6%

6/18/2026

50.80K→49.49K

Common Stock

Direct

S · Sale

−798.00

Price / share

$540.25

Trade value

$431.12K

% of position

1.6%

6/18/2026

49.49K→48.70K

Common Stock

Direct

S · Sale

−950.00

Price / share

$541.25

Trade value

$514.19K

% of position

2.0%

6/18/2026

48.70K→47.75K

Common Stock

Direct

S · Sale

−160.00

Price / share

$541.95

Trade value

$86.71K

% of position

0.3%

6/18/2026

47.75K→47.59K

Common Stock

Direct

S · Sale

−480.00

Price / share

$544.26

Trade value

$261.25K

% of position

1.0%

6/18/2026

47.59K→47.11K

Common Stock

Direct

S · Sale

−157.00

Price / share

$546.15

Trade value

$85.74K

% of position

0.3%

6/18/2026

47.11K→46.95K

Common Stock

Direct

S · Sale

−881.00

Price / share

$547.65

Trade value

$482.48K

% of position

1.9%

6/18/2026

46.95K→46.07K

Common Stock

Direct

S · Sale

−496.00

Price / share

$548.91

Trade value

$272.26K

% of position

1.1%

6/18/2026

46.07K→45.57K

Common Stock

Direct

S · Sale

−400.00

Price / share

$551.74

Trade value

$220.70K

% of position

0.9%

6/18/2026

45.57K→45.17K

Total

Net shares

+0.00

Net value

-$3.28M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	6/18/2026	M · Option Exercise	+8.30K	$146.03	$1.21M	18.4%	45.17K	53.47K
Common Stock Direct	6/18/2026	S · Sale	−1.72K	$537.04	$921.03K	3.2%	53.47K	51.76K
Common Stock Direct	6/18/2026	S · Sale	−958.00	$538.03	$515.43K	1.9%	51.76K	50.80K
Common Stock Direct	6/18/2026	S · Sale	−1.30K	$539.42	$703.94K	2.6%	50.80K	49.49K
Common Stock Direct	6/18/2026	S · Sale	−798.00	$540.25	$431.12K	1.6%	49.49K	48.70K
Common Stock Direct	6/18/2026	S · Sale	−950.00	$541.25	$514.19K	2.0%	48.70K	47.75K
Common Stock Direct	6/18/2026	S · Sale	−160.00	$541.95	$86.71K	0.3%	47.75K	47.59K
Common Stock Direct	6/18/2026	S · Sale	−480.00	$544.26	$261.25K	1.0%	47.59K	47.11K
Common Stock Direct	6/18/2026	S · Sale	−157.00	$546.15	$85.74K	0.3%	47.11K	46.95K
Common Stock Direct	6/18/2026	S · Sale	−881.00	$547.65	$482.48K	1.9%	46.95K	46.07K
Common Stock Direct	6/18/2026	S · Sale	−496.00	$548.91	$272.26K	1.1%	46.07K	45.57K
Common Stock Direct	6/18/2026	S · Sale	−400.00	$551.74	$220.70K	0.9%	45.57K	45.17K
Total			+0.00		-$3.28M

Derivative Transactions1

Stock Option

Direct

M · Option Exercise

Converts to

Common Stock

8.30K shares

−8.30K

Strike price

146.03

Held after

97.34K

Exercisable

—

6/18/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option Direct	Common Stock8.30K shares	6/18/2026	M · Option Exercise	−8.30K	146.03	—	97.34K