ELDN · Eledon Pharmaceuticals, Inc.

This option represents a right to purchase up to 30,870 shares of common stock, which option vests with respect to 100% of the total number of shares on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Represents shares issuable on settlement of restricted stock units ("RSUs") for common stock on a one-for-one basis granted to the reporting person. The RSUs were issued on January 10, 2025 and vested 100% on January 10, 2026.

Each restricted stock unit represents a contingent right to receive 1 share of the Issuer's common stock upon settlement for no consideration.

100% of the total restricted stock units will vest on January 10, 2026.

This option represents a right to purchase up to 77,175 shares of common stock, which option vests with respect to 100% of the total number of shares on January 10, 2026.

This option represents a right to purchase up to 175,000 shares of common stock, which option vests with respect to 43,750 shares on January 10, 2026, and then with respect to 6.25% of the underlying shares quarterly over the three-year period ending January 10, 2029, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

Each restricted stock unit represents a contingent right to receive 1 share of the Issuer's common stock upon settlement for no consideration.

Represents shares issuable on settlement of restricted stock units ("RSUs"). The RSUs will vest with respect to 50% of the RSUs on January 10, 2027, and then with respect to the remaining 50% of the underlying shares on January 10 2028, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

Each restricted stock unit represents a contingent right to receive 1 share of the Issuer's common stock upon settlement for no consideration.

100% of the total restricted stock units will vest on January 10, 2026.

Each restricted stock unit represents a contingent right to receive 1 share of the Issuer's common stock upon settlement for no consideration.

100% of the restricted stock units will vest on January 10, 2026.

Each restricted stock unit represents a contingent right to receive 1 share of the Issuer's common stock upon settlement for no consideration.

100% of the total restricted stock units will vest on January 10, 2026.

This option represents a right to purchase up to 30,870 shares of common stock, which option vests with respect to 100% of the total number of shares on January 10, 2026.

This option represents a right to purchase up to 150,000 shares of common stock, which option vests with respect to 37,625 shares on January 10, 2026, and then with respect to 6.25% of the underlying shares quarterly over the three-year period ending January 10, 2029, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

Each restricted stock unit represents a contingent right to receive 1 share of the Issuer's common stock upon settlement for no consideration.

Represents shares issuable on settlement of restricted stock units ("RSUs"). The RSUs will vest with respect to 50% of the RSUs on January 10, 2027, and then with respect to the remaining 50% of the underlying shares on January 10 2028, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

Each restricted stock unit represents a contingent right to receive 1 share of the Issuer's common stock upon settlement for no consideration.

Represents shares issuable on settlement of restricted stock units ("RSUs"). The RSUs will vest with respect to 50% of the RSUs on January 10, 2027, and then with respect to the remaining 50% of the underlying shares on January 10, 2028, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

This option represents a right to purchase up to 243,000 shares of common stock, which option vests with respect to 60,750 shares on January 10, 2026, and then with respect to 6.25% of the underlying shares quarterly over the three-year period ending January 10, 2029, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

Each restricted stock unit represents a contingent right to receive 1 share of the Issuer's common stock upon settlement for no consideration.

Represents shares issuable on settlement of restricted stock units ("RSUs"). The RSUs will vest with respect to 50% of the RSUs on January 10, 2027, and then with respect to the remaining 50% of the underlying shares on January 10 2028, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

This option represents a right to purchase up to 30,870 shares of common stock, which option vests with respect to 100% of the total number of shares on January 10, 2026.

This option represents a right to purchase up to 30,870 shares of common stock, which option vests with respect to 100% of the total number of shares on January 10, 2026.

Each restricted stock unit represents a contingent right to receive 1 share of the Issuer's common stock upon settlement for no consideration.

100% of the total restricted stock units will vest on January 10, 2026.

Each restricted stock unit represents a contingent right to receive 1 share of the Issuer's common stock upon settlement for no consideration.

100% of the total restricted stock units will vest on January 10, 2026.

This option represents a right to purchase up to 30,870 shares of common stock, which option vests with respect to 100% of the total number of shares on January 10, 2026.

This option represents a right to purchase up to 600,000 shares of common stock, which option vests with respect to 150,000 shares on January 10, 2026, and then with respect to 6.25% of the underlying shares quarterly over the three-year period ending January 10, 2029, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

This transaction represents the attainment of the performance conditions applicable to an option award subject to both performance-based and time-based vesting criteria granted to the reporting person on May 1, 2023. The option was determined to satisfy the performance-based vesting criteria with respect to 1,015,743 shares of underlying Common Stock on November 21, 2024 and time-based vesting criteria with respect to 380,904 shares of underlying Common Stock on November 1, 2024. The option will satisfy the time-based vesting criteria with respect to the 634,839 remaining shares of Common Stock underlying the option in substantially equal quarterly installments over a three-year period ending May 1, 2027.

This transaction represents the attainment of the performance conditions applicable to an option award subject to both performance-based and time-based vesting criteria granted to the reporting person on May 1, 2023. The option was determined to satisfy the performance-based vesting criteria with respect to 474,350 shares of underlying Common Stock on November 21, 2024 and time-based vesting criteria with respect to 177,881 shares of underlying Common Stock on November 1, 2024. The option will satisfy the time-based vesting criteria with respect to the 296,469 remaining shares of Common Stock underlying the option in substantially equal quarterly installments over a three-year period ending May 1, 2027.

This transaction represents the attainment of the performance conditions applicable to an option award subject to both performance-based and time-based vesting criteria granted to the reporting person on May 1, 2023. The option was determined to satisfy the performance-based vesting criteria with respect to 525,032 shares of underlying Common Stock on November 21, 2024 and time-based vesting criteria with respect to 196,887 shares of underlying Common Stock on November 1, 2024. The option will satisfy the time-based vesting criteria with respect to the 328,145 remaining shares of Common Stock underlying the option in substantially equal quarterly installments over a three-year period ending May 1, 2027.

This transaction represents the attainment of the performance conditions applicable to an option award subject to both performance-based and time-based vesting criteria granted to the reporting person on May 1, 2023. The option was determined to satisfy the performance-based vesting criteria with respect to 840,438 shares of underlying Common Stock on November 21, 2024 and time-based vesting criteria with respect to 315,164 shares of underlying Common Stock on November 1, 2024. The option will satisfy the time-based vesting criteria with respect to the 525,274 remaining shares of Common Stock underlying the option in substantially equal quarterly installments over a three-year period ending May 1, 2027.

This Form 4 is filed jointly by Biotechnology Value Fund, L.P. ("BVF"), Biotechnology Value Fund II, L.P. ("BVF2"), Biotechnology Value Trading Fund OS LP ("Trading Fund OS"), BVF Partners OS Ltd. ("Partners OS"), BVF I GP LLC ("BVF GP"), BVF II GP LLC ("BVF2 GP"), BVF GP Holdings LLC ("BVF GPH"), BVF Partners L.P. ("Partners"), BVF Inc. and Mark N. Lampert (collectively, the "Reporting Persons"). Each of the Reporting Persons is a member of a group for purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Exchange Act") that collectively beneficially owns over 10% of the Issuer's outstanding shares of Common Stock (the "Common Stock"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

The pre-funded warrants are exercisable immediately and shall expire when exercised in full. The pre-funded warrants cannot be exercised by the Reporting Persons if, after giving effect thereto, the Reporting Persons would beneficially own, as determined in accordance with Section 13(d) of the Exchange Act, more than 9.99% of the outstanding shares of Common Stock, subject to certain exceptions.

Securities owned directly by BVF2. As the general partner of BVF2, BVF2 GP may be deemed to beneficially own the securities owned directly by BVF2. As the sole member of BVF2 GP, BVF GPH may be deemed to beneficially own the securities owned directly by BVF2. As the investment manager of BVF2, Partners may be deemed to beneficially own the securities owned directly by BVF2. As the general partner of Partners, BVF Inc. may be deemed to beneficially own the securities owned directly by BVF2. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the securities owned directly by BVF2.

This Form 4 is filed jointly by Biotechnology Value Fund, L.P. ("BVF"), Biotechnology Value Fund II, L.P. ("BVF2"), Biotechnology Value Trading Fund OS LP ("Trading Fund OS"), BVF Partners OS Ltd. ("Partners OS"), BVF I GP LLC ("BVF GP"), BVF II GP LLC ("BVF2 GP"), BVF GP Holdings LLC ("BVF GPH"), BVF Partners L.P. ("Partners"), BVF Inc. and Mark N. Lampert (collectively, the "Reporting Persons"). Each of the Reporting Persons is a member of a group for purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Exchange Act") that collectively beneficially owns over 10% of the Issuer's outstanding shares of Common Stock (the "Common Stock"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

The pre-funded warrants are exercisable immediately and shall expire when exercised in full. The pre-funded warrants cannot be exercised by the Reporting Persons if, after giving effect thereto, the Reporting Persons would beneficially own, as determined in accordance with Section 13(d) of the Exchange Act, more than 9.99% of the outstanding shares of Common Stock, subject to certain exceptions.

Securities owned directly by Trading Fund OS. As the general partner of Trading Fund OS, Partners OS may be deemed to beneficially own the securities owned directly by Trading Fund OS. As the investment manager of Trading Fund OS and the sole member of Partners OS, Partners may be deemed to beneficially own the securities owned directly by Trading Fund OS. As the general partner of Partners, BVF Inc. may be deemed to beneficially own the securities owned directly by Trading Fund OS. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the securities owned directly by Trading Fund OS.

This Form 4 is filed jointly by Biotechnology Value Fund, L.P. ("BVF"), Biotechnology Value Fund II, L.P. ("BVF2"), Biotechnology Value Trading Fund OS LP ("Trading Fund OS"), BVF Partners OS Ltd. ("Partners OS"), BVF I GP LLC ("BVF GP"), BVF II GP LLC ("BVF2 GP"), BVF GP Holdings LLC ("BVF GPH"), BVF Partners L.P. ("Partners"), BVF Inc. and Mark N. Lampert (collectively, the "Reporting Persons"). Each of the Reporting Persons is a member of a group for purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Exchange Act") that collectively beneficially owns over 10% of the Issuer's outstanding shares of Common Stock (the "Common Stock"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

The pre-funded warrants are exercisable immediately and shall expire when exercised in full. The pre-funded warrants cannot be exercised by the Reporting Persons if, after giving effect thereto, the Reporting Persons would beneficially own, as determined in accordance with Section 13(d) of the Exchange Act, more than 9.99% of the outstanding shares of Common Stock, subject to certain exceptions.

Securities owned directly by BVF. As the general partner of BVF, BVF GP may be deemed to beneficially own the securities owned directly by BVF. As the sole member of BVF GP, BVF GPH may be deemed to beneficially own the securities owned directly by BVF. As the investment manager of BVF, Partners may be deemed to beneficially own the securities owned directly by BVF. As the general partner of Partners, BVF Inc. may be deemed to beneficially own the securities owned directly by BVF. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the securities owned directly by BVF.

This transaction represents the attainment of the performance conditions applicable to an option award subject to both performance-based and time-based vesting criteria granted to the reporting person on May 1, 2023. The option was determined to satisfy the performance-based vesting criteria with respect to 241,650 shares of underlying Common Stock on June 13, 2024 and time-based vesting criteria with respect to 60,413 shares of underlying Common Stock on May 1, 2024. The option will satisfy the time-based vesting criteria with respect to the 181,237 remaining shares of Common Stock underlying the option in substantially equal quarterly installments over a three-year period ending May 1, 2027.

This transaction represents the attainment of the performance conditions applicable to an option award subject to both performance-based and time-based vesting criteria granted to the reporting person on May 1, 2023. The option was determined to satisfy the performance-based vesting criteria with respect to 267,470 shares of underlying Common Stock on June 13, 2024 and time-based vesting criteria with respect to 66,867 shares of underlying Common Stock on May 1, 2024. The option will satisfy the time-based vesting criteria with respect to the 200,603 remaining shares of Common Stock underlying the option in substantially equal quarterly installments over a three-year period ending May 1, 2027.

This transaction represents the attainment of the performance conditions applicable to an option award subject to both performance-based and time-based vesting criteria granted to the reporting person on May 1, 2023. The option was determined to satisfy the performance-based vesting criteria with respect to 517,454 shares of underlying Common Stock on June 13, 2024 and time-based vesting criteria with respect to 129,363 shares of underlying Common Stock on May 1, 2024. The option will satisfy the time-based vesting criteria with respect to the 388,091 remaining shares of Common Stock underlying the option in substantially equal quarterly installments over a three-year period ending May 1, 2027.

This transaction represents the attainment of the performance conditions applicable to an option award subject to both performance-based and time-based vesting criteria granted to the reporting person on May 1, 2023. The option was determined to satisfy the performance-based vesting criteria with respect to 428,148 shares of underlying Common Stock on June 13, 2024 and time-based vesting criteria with respect to 107,037 shares of underlying Common Stock on May 1, 2024. The option will satisfy the time-based vesting criteria with respect to the 321,111 remaining shares of Common Stock underlying the option in substantially equal quarterly installments over a three-year period ending May 1, 2027.

This Form 4 is filed jointly by Biotechnology Value Fund, L.P. ("BVF"), Biotechnology Value Fund II, L.P. ("BVF2"), Biotechnology Value Trading Fund OS LP ("Trading Fund OS"), BVF Partners OS Ltd. ("Partners OS"), BVF I GP LLC ("BVF GP"), BVF II GP LLC ("BVF2 GP"), BVF GP Holdings LLC ("BVF GPH"), BVF Partners L.P. ("Partners"), BVF Inc. and Mark N. Lampert (collectively, the "Reporting Persons"). Each of the Reporting Persons is a member of a group for purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Exchange Act") that collectively beneficially owns over 10% of the Issuer's outstanding shares of Common Stock (the "Common Stock"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

Pursuant to a securities purchase agreement between the Issuer and certain institutional and accredited investors, including certain of the Reporting Persons (the "2024 Purchasers"), the Issuer agreed to issue and sell to the 2024 Purchasers in a private placement (the "2024 Private Placement") shares of Common Stock at a price of $2.37 per share, and pre-funded warrants (the "2024 Pre-Funded Warrants") at a price of $2.369 per underlying share, which are exercisable into shares of Common Stock at an exercise price of $0.001 per share.

2024 Pre-Funded Warrants purchased in the 2024 Private Placement. The 2024 Pre-Funded Warrants are exercisable immediately and shall expire when exercised in full. The 2024 Pre-Funded Warrants cannot be exercised by the Reporting Persons if, after giving effect thereto, the Reporting Persons would beneficially own, as determined in accordance with Section 13(d) of the Exchange Act, more than 9.99% of the outstanding shares of Common Stock, subject to certain exceptions.

Securities owned directly by BVF. As the general partner of BVF, BVF GP may be deemed to beneficially own the securities owned directly by BVF. As the sole member of BVF GP, BVF GPH may be deemed to beneficially own the securities owned directly by BVF. As the investment manager of BVF, Partners may be deemed to beneficially own the securities owned directly by BVF. As the general partner of Partners, BVF Inc. may be deemed to beneficially own the securities owned directly by BVF. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the securities owned directly by BVF.

This Form 4 is filed jointly by Biotechnology Value Fund, L.P. ("BVF"), Biotechnology Value Fund II, L.P. ("BVF2"), Biotechnology Value Trading Fund OS LP ("Trading Fund OS"), BVF Partners OS Ltd. ("Partners OS"), BVF I GP LLC ("BVF GP"), BVF II GP LLC ("BVF2 GP"), BVF GP Holdings LLC ("BVF GPH"), BVF Partners L.P. ("Partners"), BVF Inc. and Mark N. Lampert (collectively, the "Reporting Persons"). Each of the Reporting Persons is a member of a group for purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Exchange Act") that collectively beneficially owns over 10% of the Issuer's outstanding shares of Common Stock (the "Common Stock"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

Pursuant to a securities purchase agreement between the Issuer and certain institutional and accredited investors, including certain of the Reporting Persons (the "2024 Purchasers"), the Issuer agreed to issue and sell to the 2024 Purchasers in a private placement (the "2024 Private Placement") shares of Common Stock at a price of $2.37 per share, and pre-funded warrants (the "2024 Pre-Funded Warrants") at a price of $2.369 per underlying share, which are exercisable into shares of Common Stock at an exercise price of $0.001 per share.

Shares of Common Stock purchased in the 2024 Private Placement.

Securities owned directly by BVF. As the general partner of BVF, BVF GP may be deemed to beneficially own the securities owned directly by BVF. As the sole member of BVF GP, BVF GPH may be deemed to beneficially own the securities owned directly by BVF. As the investment manager of BVF, Partners may be deemed to beneficially own the securities owned directly by BVF. As the general partner of Partners, BVF Inc. may be deemed to beneficially own the securities owned directly by BVF. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the securities owned directly by BVF.

This Form 4 is filed jointly by Biotechnology Value Fund, L.P. ("BVF"), Biotechnology Value Fund II, L.P. ("BVF2"), Biotechnology Value Trading Fund OS LP ("Trading Fund OS"), BVF Partners OS Ltd. ("Partners OS"), BVF I GP LLC ("BVF GP"), BVF II GP LLC ("BVF2 GP"), BVF GP Holdings LLC ("BVF GPH"), BVF Partners L.P. ("Partners"), BVF Inc. and Mark N. Lampert (collectively, the "Reporting Persons"). Each of the Reporting Persons is a member of a group for purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Exchange Act") that collectively beneficially owns over 10% of the Issuer's outstanding shares of Common Stock (the "Common Stock"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

Pursuant to a securities purchase agreement between the Issuer and certain institutional and accredited investors, including certain of the Reporting Persons (the "2024 Purchasers"), the Issuer agreed to issue and sell to the 2024 Purchasers in a private placement (the "2024 Private Placement") shares of Common Stock at a price of $2.37 per share, and pre-funded warrants (the "2024 Pre-Funded Warrants") at a price of $2.369 per underlying share, which are exercisable into shares of Common Stock at an exercise price of $0.001 per share.

2024 Pre-Funded Warrants purchased in the 2024 Private Placement. The 2024 Pre-Funded Warrants are exercisable immediately and shall expire when exercised in full. The 2024 Pre-Funded Warrants cannot be exercised by the Reporting Persons if, after giving effect thereto, the Reporting Persons would beneficially own, as determined in accordance with Section 13(d) of the Exchange Act, more than 9.99% of the outstanding shares of Common Stock, subject to certain exceptions.

Securities owned directly by BVF2. As the general partner of BVF2, BVF2 GP may be deemed to beneficially own the securities owned directly by BVF2. As the sole member of BVF2 GP, BVF GPH may be deemed to beneficially own the securities owned directly by BVF2. As the investment manager of BVF2, Partners may be deemed to beneficially own the securities owned directly by BVF2. As the general partner of Partners, BVF Inc. may be deemed to beneficially own the securities owned directly by BVF2. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the securities owned directly by BVF2.

This Form 4 is filed jointly by Biotechnology Value Fund, L.P. ("BVF"), Biotechnology Value Fund II, L.P. ("BVF2"), Biotechnology Value Trading Fund OS LP ("Trading Fund OS"), BVF Partners OS Ltd. ("Partners OS"), BVF I GP LLC ("BVF GP"), BVF II GP LLC ("BVF2 GP"), BVF GP Holdings LLC ("BVF GPH"), BVF Partners L.P. ("Partners"), BVF Inc. and Mark N. Lampert (collectively, the "Reporting Persons"). Each of the Reporting Persons is a member of a group for purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Exchange Act") that collectively beneficially owns over 10% of the Issuer's outstanding shares of Common Stock (the "Common Stock"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

Pursuant to a securities purchase agreement between the Issuer and certain institutional and accredited investors, including certain of the Reporting Persons (the "2024 Purchasers"), the Issuer agreed to issue and sell to the 2024 Purchasers in a private placement (the "2024 Private Placement") shares of Common Stock at a price of $2.37 per share, and pre-funded warrants (the "2024 Pre-Funded Warrants") at a price of $2.369 per underlying share, which are exercisable into shares of Common Stock at an exercise price of $0.001 per share.

Shares of Common Stock purchased in the 2024 Private Placement.

Securities owned directly by BVF2. As the general partner of BVF2, BVF2 GP may be deemed to beneficially own the securities owned directly by BVF2. As the sole member of BVF2 GP, BVF GPH may be deemed to beneficially own the securities owned directly by BVF2. As the investment manager of BVF2, Partners may be deemed to beneficially own the securities owned directly by BVF2. As the general partner of Partners, BVF Inc. may be deemed to beneficially own the securities owned directly by BVF2. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the securities owned directly by BVF2.

This Form 4 is filed jointly by Biotechnology Value Fund, L.P. ("BVF"), Biotechnology Value Fund II, L.P. ("BVF2"), Biotechnology Value Trading Fund OS LP ("Trading Fund OS"), BVF Partners OS Ltd. ("Partners OS"), BVF I GP LLC ("BVF GP"), BVF II GP LLC ("BVF2 GP"), BVF GP Holdings LLC ("BVF GPH"), BVF Partners L.P. ("Partners"), BVF Inc. and Mark N. Lampert (collectively, the "Reporting Persons"). Each of the Reporting Persons is a member of a group for purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Exchange Act") that collectively beneficially owns over 10% of the Issuer's outstanding shares of Common Stock (the "Common Stock"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

Pursuant to a securities purchase agreement between the Issuer and certain institutional and accredited investors, including certain of the Reporting Persons (the "2024 Purchasers"), the Issuer agreed to issue and sell to the 2024 Purchasers in a private placement (the "2024 Private Placement") shares of Common Stock at a price of $2.37 per share, and pre-funded warrants (the "2024 Pre-Funded Warrants") at a price of $2.369 per underlying share, which are exercisable into shares of Common Stock at an exercise price of $0.001 per share.

2024 Pre-Funded Warrants purchased in the 2024 Private Placement. The 2024 Pre-Funded Warrants are exercisable immediately and shall expire when exercised in full. The 2024 Pre-Funded Warrants cannot be exercised by the Reporting Persons if, after giving effect thereto, the Reporting Persons would beneficially own, as determined in accordance with Section 13(d) of the Exchange Act, more than 9.99% of the outstanding shares of Common Stock, subject to certain exceptions.

Securities owned directly by Trading Fund OS. As the general partner of Trading Fund OS, Partners OS may be deemed to beneficially own the securities owned directly by Trading Fund OS. As the investment manager of Trading Fund OS and the sole member of Partners OS, Partners may be deemed to beneficially own the securities owned directly by Trading Fund OS. As the general partner of Partners, BVF Inc. may be deemed to beneficially own the securities owned directly by Trading Fund OS. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the securities owned directly by Trading Fund OS.

This Form 4 is filed jointly by Biotechnology Value Fund, L.P. ("BVF"), Biotechnology Value Fund II, L.P. ("BVF2"), Biotechnology Value Trading Fund OS LP ("Trading Fund OS"), BVF Partners OS Ltd. ("Partners OS"), BVF I GP LLC ("BVF GP"), BVF II GP LLC ("BVF2 GP"), BVF GP Holdings LLC ("BVF GPH"), BVF Partners L.P. ("Partners"), BVF Inc. and Mark N. Lampert (collectively, the "Reporting Persons"). Each of the Reporting Persons is a member of a group for purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Exchange Act") that collectively beneficially owns over 10% of the Issuer's outstanding shares of Common Stock (the "Common Stock"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

Pursuant to a securities purchase agreement between the Issuer and certain institutional and accredited investors, including certain of the Reporting Persons (the "2024 Purchasers"), the Issuer agreed to issue and sell to the 2024 Purchasers in a private placement (the "2024 Private Placement") shares of Common Stock at a price of $2.37 per share, and pre-funded warrants (the "2024 Pre-Funded Warrants") at a price of $2.369 per underlying share, which are exercisable into shares of Common Stock at an exercise price of $0.001 per share.

Shares of Common Stock purchased in the 2024 Private Placement.

Securities owned directly by Trading Fund OS. As the general partner of Trading Fund OS, Partners OS may be deemed to beneficially own the securities owned directly by Trading Fund OS. As the investment manager of Trading Fund OS and the sole member of Partners OS, Partners may be deemed to beneficially own the securities owned directly by Trading Fund OS. As the general partner of Partners, BVF Inc. may be deemed to beneficially own the securities owned directly by Trading Fund OS. As a director and officer of BVF Inc., Mr. Lampert may be deemed to beneficially own the securities owned directly by Trading Fund OS.