LEIDEN JEFFREY M purchased 1.9% of their position (5K shares) of ODYSSEY THERAPEUTICS, INC. on the open market

Open‑market purchase worth $100.0K — a small addition. The strongest form of insider conviction signal.

P · 1 purchase

LEIDEN JEFFREY M

Filed: 5/12/2026ACC: 0001193125-26-217607

InsiderLEIDEN JEFFREY MCIK 1242825

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IssuerODYSSEY THERAPEUTICS, INC.CIK 1882782

Director

Since May 2026

+358.90K

Net shares

Net buyer

$306.00

Total sold

Open market trades

1B · 0S

Total transactions

662.88K acquired · 303.99K disposed

Non-Derivative Transactions4

Common Stock

Direct

P · Purchase

+5K

Price / share

$20.00

Trade value

$100K

% of position

1.9%

5/8/2026

265.20K→270.20K

Common Stock

Indirect

C · Conversion

+28.70K

Price / share

—

Trade value

—

% of position

New position

5/11/2026

0.00→28.70K

Common Stock

Indirect

M · Option Exercise

+2.96K

Price / share

—

Trade value

—

% of position

10.3%

5/11/2026

28.70K→31.66K

Common Stock

Indirect

F · Tax Withholding

−17.00

Price / share

$18.00

Trade value

$306.00

% of position

0.1%

5/11/2026

31.66K→31.64K

Total

Net shares

+36.64K

Net value

$99.69K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	5/8/2026	P · Purchase	+5K	$20.00	$100K	1.9%	265.20K	270.20K
Common Stock Indirect	5/11/2026	C · Conversion	+28.70K	—	—	New position	0.00	28.70K
Common Stock Indirect	5/11/2026	M · Option Exercise	+2.96K	—	—	10.3%	28.70K	31.66K
Common Stock Indirect	5/11/2026	F · Tax Withholding	−17.00	$18.00	$306.00	0.1%	31.66K	31.64K
Total			+36.64K		$99.69K

Derivative Transactions5

Stock Option (Right to Buy)

Direct

A · Award

Converts to

Common Stock

626.22K shares

+626.22K

Strike price

18.00

Held after

626.22K

Exercisable

—

5/7/2026

Series B Convertible Preferred Stock

Indirect

C · Conversion

Converts to

Common Stock

8.53K shares

−79.17K

Strike price

Held after

0.00

Exercisable

—

5/11/2026

Series C Convertible Preferred Stock

Indirect

C · Conversion

Converts to

Common Stock

10.29K shares

−100K

Strike price

Held after

0.00

Exercisable

—

5/11/2026

Series D Convertible Preferred Stock

Indirect

C · Conversion

Converts to

Common Stock

9.88K shares

−96K

Strike price

Held after

0.00

Exercisable

—

5/11/2026

Series D Warrants (Right to Buy)

Indirect

M · Option Exercise

Converts to

Common Stock

2.96K shares

−28.80K

Strike price

0.10

Held after

0.00

Exercisable

—

5/11/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Common Stock626.22K shares	5/7/2026	A · Award	+626.22K	18.00	—	626.22K
Series B Convertible Preferred Stock Indirect	Common Stock8.53K shares	5/11/2026	C · Conversion	−79.17K		—	0.00
Series C Convertible Preferred Stock Indirect	Common Stock10.29K shares	5/11/2026	C · Conversion	−100K		—	0.00
Series D Convertible Preferred Stock Indirect	Common Stock9.88K shares	5/11/2026	C · Conversion	−96K		—	0.00
Series D Warrants (Right to Buy) Indirect	Common Stock2.96K shares	5/11/2026	M · Option Exercise	−28.80K	0.10	—	0.00