Role
10%+ Owner
Signature
Deep Track Biotechology Master Fund, Ltd. /s/ David Kroin, Director
Issuer symbol
LBRX
Transactions as of
06 Feb 2026
Net transactions value
+$10,000,004
Form type
4
Filing time
10 Feb 2026, 16:30:04 UTC
Previous filing
16 Sep 2025
Next filing
11 Feb 2026

Reporting Owners (4)

Name Relationship Address Signature Signature date CIK
Deep Track Biotechnology Master Fund, Ltd. 10%+ Owner C/O WALKERS CORPORATE LIMITED, 190 ELGIN AVE, GEORGE TOWN, CAYMAN ISLANDS Deep Track Biotechology Master Fund, Ltd. /s/ David Kroin, Director 10 Feb 2026 0002015536
Deep Track Special Opportunities Fund, LP 10%+ Owner 200 GREENWICH AVENUE, 3RD FLOOR, GREENWICH Deep Track Special Opportunities Fund, LP, By David Kroin, Managing Member of the Investment Manager 10 Feb 2026 0002077950
Deep Track Capital, LP 10%+ Owner 200 GREENWICH AVENUE, 3RD FLOOR, GREENWICH Deep Track Capital, LP /s/ David Kroin, Managing Member of the General Partner of the Investment Adviser 10 Feb 2026 0001856083
KROIN DAVID 10%+ Owner C/O DEEP TRACK CAPITAL, LP, 200 GREENWICH AVENUE, 3RD FLOOR, GREENWICH /s/ David Kroin 10 Feb 2026 0001397513

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction LBRX Pre-Funded Warrants (Right to Buy) Purchase $8,011,622 +378,444 $21.17 378,444 06 Feb 2026 Common Stock 378,444 $0.000100 Direct F1, F2, F3
transaction LBRX Pre-Funded Warrants (Right to Buy) Purchase $1,988,383 +93,925 $21.17 93,925 06 Feb 2026 Common Stock 93,925 $0.000100 By Deep Track Special Opportunities Fund, LP F1, F2, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The Pre-Funded Warrants are exercisable immediately and may be exercised at any time until all of the Pre-Funded Warrants are exercised in full. The Pre-Funded Warrants do not expire.
F2 Under the terms of the Pre-Funded Warrants held by the Reporting Persons, the Issuer may not effect the exercise of any such Pre-Funded Warrant, and a holder will not be entitled to exercise any portion of any such Pre-Funded Warrant (i) if immediately prior to the exercise, the Reporting Persons (together with its affiliates), beneficially owns an aggregate number of shares of Issuer Common Stock greater than 9.99%, as applicable (the "Maximum Percentage"), of the total number of issued and outstanding shares of Common Stock of the Issuer without taking into account any shares underlying such Pre-Funded Warrants, or (ii) to the extent that immediately following the exercise, the holder (together with its affiliates) would beneficially own in excess of the Maximum Percentage of the number of shares of Common Stock outstanding immediately after giving effect to the issuance of such shares of Common Stock.
F3 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.
F4 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.