LB PHARMACEUTICALS INC — Director's Dealing 2025

Sep 17, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: LB PHARMACEUTICALS INC (LBRX)
CIK: 0001691082
Period of Report: 2025-09-12

Reporting Person: Deep Track Biotechnology Master Fund, Ltd. (N/A)
Reporting Person: Deep Track Capital, LP (10% Owner)
Reporting Person: KROIN DAVID (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-12	Common Stock	C	686138	—	Acquired	686138	Direct
2025-09-12	Common Stock	P	2000000	$15	Acquired	2686138	Direct
2025-09-12	Common Stock	P	666666	$15	Acquired	666666	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-09-12	Series C Preferred Stock	$	C	16666667	Disposed		Common Stock (686138)	Direct

Footnotes

F1: Each share of Series C Preferred Stock automatically converted immediately prior to the closing of the Issuer's initial public offering for no additional consideration at a conversion ratio that was dependent upon the initial price per share to the public in the Issuer's initial public offering.

F2: Represents securities held by Deep Track Biotechnology Master Fund, Ltd. Deep Track Capital, LP is the investment manager of Deep Track Biotechnology Master Fund, Ltd. Mr. David Kroin is the managing member of Deep Track Capital GP, LLC, the general partner of Deep Track Capital, LP., and by virtue of such status may be deemed to be the beneficial owner of the shares owned by Deep Track Biotechnology Master Fund, Ltd. Deep Track Capital, LP and Mr. Kroin disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests.

F3: Represents securities held by Deep Track Special Opportunities Fund, LP. Deep Track Capital, LP is the investment manager of Deep Track Special Opportunities Fund LP. Mr. David Kroin is the managing member of Deep Track Capital GP, LLC, the general partner of Deep Track Capital, LP., and by virtue of such status may be deemed to be the beneficial owner of the shares owned by Deep Track Special Opportunities Fund, LP. Deep Track Capital, LP and Mr. Kroin disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests.