LB PHARMACEUTICALS INC — Director's Dealing 2025

Sep 16, 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: Pontifax Management 4 G.P. (2015) Ltd. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-12	Common Stock	C	411681	—	Acquired	411681	Indirect
2025-09-12	Common Stock	P	1000000	$15	Acquired	1411681	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-09-12	Series C Preferred Stock	$	C	10000000	Disposed		Common Stock (411681)	Indirect

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: Consists of (i) 261,938 shares of common stock held by Pontifax (Israel) VI Limited Partnership, or Pontifax Israel, and (ii) 149,743 shares of common stock held by Pontifax (Cayman) VI Limited Partnership, or Pontifax Cayman. Pontifax Israel and Pontifax Cayman are collectively referred to as the Pontifax Entities. Pontifax VI G.P. L.P., or Pontifax VI G.P., is the general partner of each of the Pontifax Entities and Pontifax Management IV G.P. (2015) Ltd., or Pontifax Management, is the general partner of Pontifax VI G.P. Messrs. Tomer Kariv and Ran Nussbaum, are the Managing Partners of Pontifax Management and, as a result, may be deemed to share voting and investment power with respect to the shares held by each of the Pontifax Entities.

F3: Consists of (i) 636,263 shares of common stock held by Pontifax (Israel) VI Limited Partnership, or Pontifax Israel, and (ii) 363,737 shares of common stock held by Pontifax (Cayman) VI Limited Partnership, or Pontifax Cayman. Pontifax Israel and Pontifax Cayman are collectively referred to as the Pontifax Entities. Pontifax VI G.P. L.P., or Pontifax VI G.P., is the general partner of each of the Pontifax Entities and Pontifax Management IV G.P. (2015) Ltd., or Pontifax Management, is the general partner of Pontifax VI G.P. Messrs. Tomer Kariv and Ran Nussbaum, are the Managing Partners of Pontifax Management and, as a result, may be deemed to share voting and investment power with respect to the shares held by each of the Pontifax Entities.

F4: Consists of (i) 6,362,625 shares of our redeemable convertible preferred stock held by Pontifax (Israel) VI Limited Partnership, or Pontifax Israel, and (ii) 3,637,375 shares of our redeemable convertible preferred stock held by Pontifax (Cayman) VI Limited Partnership, or Pontifax Cayman. Pontifax Israel and Pontifax Cayman are collectively referred to as the Pontifax Entities. Pontifax VI G.P. L.P., or Pontifax VI G.P., is the general partner of each of the Pontifax Entities and Pontifax Management IV G.P. (2015) Ltd., or Pontifax Management, is the general partner of Pontifax VI G.P. Messrs. Tomer Kariv and Ran Nussbaum, are the Managing Partners of Pontifax Management and, as a result, may be deemed to share voting and investment power with respect to the shares held by each of the Pontifax Entities.