Form 4 for ODTX Odyssey Therapeutics, Inc.

Accepted 2026-05-11 20:35:18 ET · period of report 2026-05-07 · accession 0001193125-26-217607 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2026-05-11 20:35	2026-05-08	ODTX	LEIDEN JEFFREY M	Dir	P - Purchase	$20.00	+5,000	270.2K	+2%	+$100.0K
DI	2026-05-11 20:35	2026-05-11	ODTX	LEIDEN JEFFREY M	Dir	C - Cnv Deriv	—	+28.7K	28.7K	New	—
DI	2026-05-11 20:35	2026-05-11	ODTX	LEIDEN JEFFREY M	Dir	M - OptEx	—	+2,963	31.7K	+10%	—
DI	2026-05-11 20:35	2026-05-11	ODTX	LEIDEN JEFFREY M	Dir	F - Tax	$18.00	-17	31.6K	-0.1%	-$306
DMI	2026-05-11 20:35	2026-05-11	ODTX	LEIDEN JEFFREY M	Dir	C - Cnv Deriv	—	-275.2K	0	-100%	—
D	2026-05-11 20:35	2026-05-07	ODTX	LEIDEN JEFFREY M	Dir	A - Grant	$0.00	+626.2K	626.2K	New	$0
DI	2026-05-11 20:35	2026-05-11	ODTX	LEIDEN JEFFREY M	Dir	M - OptEx	—	-28.8K	0	-100%	—

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-05-08	P	A	5,000	$20.00	270,198	D	—	—
2	Common	Common Stock	2026-05-11	C	A	28,698	—	28,698	I See footnote	—	—	(F1) The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration. (F2) The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. (F3) The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. (F4) These securities are held of record by Racing Beach Ventures LLC ("Racing Beach"). The Reporting Person is a managing member of Racing Beach and may be deemed to have beneficial ownership of the securities.
3	Common	Common Stock	2026-05-11	M	A	2,963	—	31,661	I See footnote	—	—	(F5) The warrants to purchase shares of Common Stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. (F4) These securities are held of record by Racing Beach Ventures LLC ("Racing Beach"). The Reporting Person is a managing member of Racing Beach and may be deemed to have beneficial ownership of the securities.
4	Common	Common Stock	2026-05-11	F	D	17	$18.00	31,644	I See footnote	—	—	(F5) The warrants to purchase shares of Common Stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. (F6) Pursuant to the terms of the warrants, the Issuer withheld 17 warrant shares to pay the exercise price in connection with the net exercise. (F4) These securities are held of record by Racing Beach Ventures LLC ("Racing Beach"). The Reporting Person is a managing member of Racing Beach and may be deemed to have beneficial ownership of the securities.
5	Derivative	Series B Convertible Preferred Stock	2026-05-11	C	D	79,166	—	0	I See footnote	— · — to —	8,527 Common Stock	(F1) The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration. (F1) The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration. (F1) The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration. (F1) The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration. (F7) Gives effect to the 1-for-9.7170 reverse stock split effected prior to the closing of the Issuer's initial public offering. (F4) These securities are held of record by Racing Beach Ventures LLC ("Racing Beach"). The Reporting Person is a managing member of Racing Beach and may be deemed to have beneficial ownership of the securities.
6	Derivative	Series C Convertible Preferred Stock	2026-05-11	C	D	100,000	—	0	I See footnote	— · — to —	10,291 Common Stock	(F2) The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. (F2) The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. (F2) The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. (F2) The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. (F7) Gives effect to the 1-for-9.7170 reverse stock split effected prior to the closing of the Issuer's initial public offering. (F4) These securities are held of record by Racing Beach Ventures LLC ("Racing Beach"). The Reporting Person is a managing member of Racing Beach and may be deemed to have beneficial ownership of the securities.
7	Derivative	Series D Convertible Preferred Stock	2026-05-11	C	D	96,002	—	0	I See footnote	— · — to —	9,880 Common Stock	(F3) The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. (F3) The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. (F3) The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. (F3) The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. (F7) Gives effect to the 1-for-9.7170 reverse stock split effected prior to the closing of the Issuer's initial public offering. (F4) These securities are held of record by Racing Beach Ventures LLC ("Racing Beach"). The Reporting Person is a managing member of Racing Beach and may be deemed to have beneficial ownership of the securities.
8	Derivative	Stock Option (Right to Buy)	2026-05-07	A	A	626,220	$0.00	626,220	D	$18.00 · — to 2036-05-06	626,220 Common Stock	(F8) Option will vest in full on May 7, 2027, subject to the Reporting Person's continued service on each such vesting date.
9	Derivative	Series D Warrants (Right to Buy)	2026-05-11	M	D	28,800	—	0	I See footnote	$0.1 · — to —	2,963 Common Stock	(F5) The warrants to purchase shares of Common Stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. (F5) The warrants to purchase shares of Common Stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. (F5) The warrants to purchase shares of Common Stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. (F4) These securities are held of record by Racing Beach Ventures LLC ("Racing Beach"). The Reporting Person is a managing member of Racing Beach and may be deemed to have beneficial ownership of the securities.