Filing Details

 UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

(Rule 13d-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED

PURSUANT TO RULE 13d-2(b)

(Amendment No. 1)¹

 

ASLAN Pharmaceuticals Limited

(Name of Issuer)

Ordinary Shares, par value $0.01 per share

(Title of Class of Securities)

04522R2002

(CUSIP Number)

December 31, 2023

(Date of Event Which Requires Filing of this Statement)

 

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

☐

Rule 13d-1(b)

☒

Rule 13d-1(c)

☐

Rule 13d-1(d)

 

 

1              The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

2              There is no CUSIP number assigned to the Ordinary Shares. CUSIP number 04522R200 has been assigned to the American Depositary Shares of the Company, which are quoted on the Nasdaq Global Market under the symbol “ASLN.”

 

	1		NAME OF REPORTING PERSON
				Biotechnology Value Fund, L.P.
	2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP															(a) ☒
																		(b) ☐
	3		SEC USE ONLY
	4		CITIZENSHIP OR PLACE OF ORGANIZATION
				Delaware
NUMBER OF				5		SOLE VOTING POWER
SHARES
BENEFICIALLY							0
OWNED BY				6		SHARED VOTING POWER
EACH
REPORTING							31,119,650 (1)
PERSON WITH				7		SOLE DISPOSITIVE POWER
							0
				8		SHARED DISPOSITIVE POWER
							31,119,650 (1)
	9		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
				31,119,650 (1)
	10		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES															☐
	11		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
				7.2% (1)
	12		TYPE OF REPORTING PERSON
				PN

  

(1) Includes 17,095,000 Shares (as defined below) represented by 1,119,871 ADSs (as defined below) underlying certain Pre-Funded Warrants (as defined below). Each ADS represents 25 Shares.

	1		NAME OF REPORTING PERSON
				BVF I GP LLC
	2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP															(a) ☒
																		(b) ☐
	3		SEC USE ONLY
	4		CITIZENSHIP OR PLACE OF ORGANIZATION
				Delaware
NUMBER OF				5		SOLE VOTING POWER
SHARES
BENEFICIALLY							0
OWNED BY				6		SHARED VOTING POWER
EACH
REPORTING							31,119,650 (1)
PERSON WITH				7		SOLE DISPOSITIVE POWER
							0
				8		SHARED DISPOSITIVE POWER
							31,119,650 (1)
	9		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
				31,119,650 (1)
	10		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES															☐
	11		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
				7.2% (1)
	12		TYPE OF REPORTING PERSON
				OO

  

(1) Includes 17,095,000 Shares represented by 1,119,871 ADSs underlying certain Pre-Funded Warrants. Each ADS represents 25 Shares.

 

	1		NAME OF REPORTING PERSON
				Biotechnology Value Fund II, L.P.
	2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP															(a) ☒
																		(b) ☐
	3		SEC USE ONLY
	4		CITIZENSHIP OR PLACE OF ORGANIZATION
				Delaware
NUMBER OF				5		SOLE VOTING POWER
SHARES
BENEFICIALLY							0
OWNED BY				6		SHARED VOTING POWER
EACH
REPORTING							10,646,675
PERSON WITH				7		SOLE DISPOSITIVE POWER
							0
				8		SHARED DISPOSITIVE POWER
							10,646,675
	9		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
				10,646,675
	10		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES															☐
	11		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
				2.6%
	12		TYPE OF REPORTING PERSON
				PN

  

 

	1		NAME OF REPORTING PERSON
				BVF II GP LLC
	2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP															(a) ☒
																		(b) ☐
	3		SEC USE ONLY
	4		CITIZENSHIP OR PLACE OF ORGANIZATION
				Delaware
NUMBER OF				5		SOLE VOTING POWER
SHARES
BENEFICIALLY							0
OWNED BY				6		SHARED VOTING POWER
EACH
REPORTING							10,646,675
PERSON WITH				7		SOLE DISPOSITIVE POWER
							0
				8		SHARED DISPOSITIVE POWER
							10,646,675
	9		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
				10,646,675
	10		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES															☐
	11		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
				2.6%
	12		TYPE OF REPORTING PERSON
				OO

  

 

1

NAME OF REPORTING PERSON

Biotechnology Value Trading Fund OS LP

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a) ☒

(b) ☐

3

SEC USE ONLY

4

CITIZENSHIP OR PLACE OF ORGANIZATION

Cayman Islands

NUMBER OF

5

SOLE VOTING POWER

SHARES

BENEFICIALLY

0

OWNED BY

6

SHARED VOTING POWER

EACH

REPORTING

1,217,475

PERSON WITH

7

SOLE DISPOSITIVE POWER

0

8

SHARED DISPOSITIVE POWER

1,217,475

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,217,475

10

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

☐

11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

Less than 1%

12

TYPE OF REPORTING PERSON

PN

  

 

1

NAME OF REPORTING PERSON

BVF Partners OS Ltd.

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a) ☒

(b) ☐

3

SEC USE ONLY

4

CITIZENSHIP OR PLACE OF ORGANIZATION

Cayman Islands

NUMBER OF

5

SOLE VOTING POWER

SHARES

BENEFICIALLY

0

OWNED BY

6

SHARED VOTING POWER

EACH

REPORTING

1,217,475

PERSON WITH

7

SOLE DISPOSITIVE POWER

0

8

SHARED DISPOSITIVE POWER

1,217,475

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,217,475

10

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

☐

11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

Less than 1%

12

TYPE OF REPORTING PERSON

CO

  

 

	1		NAME OF REPORTING PERSON
				BVF GP Holdings LLC
	2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP															(a) ☒
																		(b) ☐
	3		SEC USE ONLY
	4		CITIZENSHIP OR PLACE OF ORGANIZATION
				Delaware
NUMBER OF				5		SOLE VOTING POWER
SHARES
BENEFICIALLY							0
OWNED BY				6		SHARED VOTING POWER
EACH
REPORTING							41,766,325 (1)
PERSON WITH				7		SOLE DISPOSITIVE POWER
							0
				8		SHARED DISPOSITIVE POWER
							41,766,325 (1)
	9		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
				41,766,325 (1)
	10		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES															☐
	11		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
				9.6% (1)
	12		TYPE OF REPORTING PERSON
				OO

  

(1) Includes 17,095,000 Shares represented by 1,119,871 ADSs underlying certain Pre-Funded Warrants. Each ADS represents 25 Shares.

 

	1		NAME OF REPORTING PERSON
				BVF Partners L.P.
	2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP															(a) ☒
																		(b) ☐
	3		SEC USE ONLY
	4		CITIZENSHIP OR PLACE OF ORGANIZATION
				Delaware
NUMBER OF				5		SOLE VOTING POWER
SHARES
BENEFICIALLY							0
OWNED BY				6		SHARED VOTING POWER
EACH
REPORTING							43,344,975 (1)
PERSON WITH				7		SOLE DISPOSITIVE POWER
							0
				8		SHARED DISPOSITIVE POWER
							43,344,975 (1)
	9		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
				43,344,975 (1)
	10		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES															☐
	11		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
				9.99% (1)
	12		TYPE OF REPORTING PERSON
				PN, IA

  

(1) Includes 17,095,000 Shares represented by 1,119,871 ADSs underlying certain Pre-Funded Warrants. Each ADS represents 25 Shares.

 

	1		NAME OF REPORTING PERSON
				BVF Inc.
	2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP															(a) ☒
																		(b) ☐
	3		SEC USE ONLY
	4		CITIZENSHIP OR PLACE OF ORGANIZATION
				Delaware
NUMBER OF				5		SOLE VOTING POWER
SHARES
BENEFICIALLY							0
OWNED BY				6		SHARED VOTING POWER
EACH
REPORTING							43,344,975 (1)
PERSON WITH				7		SOLE DISPOSITIVE POWER
							0
				8		SHARED DISPOSITIVE POWER
							43,344,975 (1)
	9		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
				43,344,975 (1)
	10		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES															☐
	11		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
				9.99% (1)
	12		TYPE OF REPORTING PERSON
				CO

  

(1) Includes 17,095,000 Shares represented by 1,119,871 ADSs underlying certain Pre-Funded Warrants. Each ADS represents 25 Shares.

 

	1		NAME OF REPORTING PERSON
				Mark N. Lampert
	2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP															(a) ☒
																		(b) ☐
	3		SEC USE ONLY
	4		CITIZENSHIP OR PLACE OF ORGANIZATION
				United States
NUMBER OF				5		SOLE VOTING POWER
SHARES
BENEFICIALLY							0
OWNED BY				6		SHARED VOTING POWER
EACH
REPORTING							43,344,975 (1)
PERSON WITH				7		SOLE DISPOSITIVE POWER
							0
				8		SHARED DISPOSITIVE POWER
							43,344,975 (1)
	9		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
				43,344,975 (1)
	10		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES															☐
	11		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
				9.99% (1)
	12		TYPE OF REPORTING PERSON
				IN

  

(1) Includes 17,095,000 Shares represented by 1,119,871 ADSs underlying certain Pre-Funded Warrants. Each ADS represents 25 Shares.

Item 1(a).

Name of Issuer:

 

ASLAN Pharmaceuticals Limited, a Cayman Islands corporation (the “Issuer”).

 

Item 1(b).

Address of Issuer's Principal Executive Offices:

 

3 Temasek Avenue

Level 18 Centennial Tower

Singapore 039190

 

Item 2(a).

Name of Person Filing

Item 2(b).

Address of Principal Business Office or, if None, Residence

Item 2(c).

Citizenship

 

Biotechnology Value Fund, L.P. (“BVF”)

44 Montgomery St., 40th Floor

San Francisco, California 94104

Citizenship: Delaware

 

BVF I GP LLC (“BVF GP”)

44 Montgomery St., 40th Floor

San Francisco, California 94104

Citizenship: Delaware

 

Biotechnology Value Fund II, L.P. (“BVF2”)

44 Montgomery St., 40th Floor

San Francisco, California 94104

Citizenship: Delaware

 

BVF II GP LLC (“BVF2 GP”)

44 Montgomery St., 40th Floor

San Francisco, California 94104

Citizenship: Delaware

 

Biotechnology Value Trading Fund OS LP (“Trading Fund OS”)

PO Box 309 Ugland House

Grand Cayman, KY1-1104

Cayman Islands

Citizenship: Cayman Islands

 

BVF Partners OS Ltd. (“Partners OS”)

PO Box 309 Ugland House

Grand Cayman, KY1-1104

Cayman Islands

Citizenship: Cayman Islands

 

BVF GP Holdings LLC (“BVF GPH”)

44 Montgomery St., 40th Floor

San Francisco, California 94104

Citizenship: Delaware

 

BVF Partners L.P. (“Partners”)

44 Montgomery St., 40th Floor

San Francisco, California 94104

Citizenship: Delaware

 

BVF Inc.

44 Montgomery St., 40th Floor

San Francisco, California 94104

Citizenship: Delaware

 

Mark N. Lampert (“Mr. Lampert”)

44 Montgomery St., 40th Floor

San Francisco, California 94104

Citizenship: United States

 

Each of the foregoing is referred to as a “Reporting Person” and collectively as the “Reporting Persons.”

 

Item 2(d).

Title of Class of Securities:

 

Ordinary Shares, par value $0.01 per share (the “Shares”).

 

The Shares are represented by American Depositary Shares (“ADSs”). Each ADS represents 25 Shares.

 

Item 2(e).

CUSIP Number:

 

04522R200 (See Footnote 2 on Cover Page)

 

Item 3.

If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b) or (c), Check Whether the Person Filing is a:

 

		/x/	Not applicable.
	(a)	/ /	Broker or dealer registered under Section 15 of the Exchange Act.
	(b)	/ /	Bank as defined in Section 3(a)(6) of the Exchange Act.
	(c)	/ /	Insurance company as defined in Section 3(a)(19) of the Exchange Act.
	(d)	/ /	Investment company registered under Section 8 of the Investment Company Act.
	(e)	/ /	An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E).
	(f)	/ /	An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F).
	(g)	/ /	A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G).
	(h)	/ /	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act.
	(i)	/ /	A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act.
	(j)	/ /	A non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J).
	(k)	/ /	Group, in accordance with Rule 13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J), please specify the type of institution: ____

 

Item 4.

Ownership

 

(a)

Amount beneficially owned:

 

As of the close of business on December 31, 2023, the Reporting Persons and a certain Partners managed account (the “Partners Managed Account”) held an aggregate of 52,401,675 Pre-Funded Warrants (the “Pre-Funded Warrants”) exercisable for an aggregate of 52,401,675 Shares represented by 2,096,067 ADSs. The Pre-Funded Warrants are currently exercisable and have a nominal exercise price of $0.0001 per Share (or $0.0025 per ADS). The Pre-Funded Warrants may not be exercised to the extent that after giving effect to such exercise the holder (together with its affiliates and any other persons acting as a group together with the holder or any of its affiliates) would beneficially own, as calculated in accordance with Section 13(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), more than 9.99% of the number of Shares outstanding immediately after giving effect to such exercise (the “Pre-Funded Warrants Ownership Limitation”). As of the close of business on December 31, 2023, the Pre-Funded Warrants Ownership Limitation limits the aggregate exercise of the Pre-Funded Warrants held by the Reporting Persons and the Partners Managed Account to 17,095,000 Shares (or 683,800 ADSs) out of the 52,401,675 Shares (or 2,096,067 ADSs) underlying the Pre-Funded Warrants held by them.

 

As of the close of business on December 31, 2023, the Reporting Persons and the Partners Managed Account held an aggregate of 42,944,775 Tranche 2A Warrants (the “Tranche 2A Warrants”) exercisable for an aggregate of 42,944,775 Shares represented by 1,717,791 ADSs or under certain circumstances Pre-Funded Warrants to purchase the same number of Shares or ADSs. The Tranche 2A Warrants are exercisable upon issuance until 60 days after the public announcement of topline interim data from the Issuer’s planned Phase 2 proof of concept trial investigating farudodstat (the “farudodstat announcement”) at an exercise price of $8.15 per ADS. The Tranche 2A Warrants may not be exercised (other than for Pre-Funded Warrants) to the extent that after giving effect to such exercise the holder (together with its affiliates and any other persons acting as a group together with the holder or any of its affiliates) would beneficially own, as calculated in accordance with Section 13(d) of the Exchange Act, more than 9.99% of the number of Shares outstanding immediately after giving effect to such exercise (the “Tranche 2A Warrants Ownership Limitation”). As of the close of business on December 31, 2023, the Tranche 2A Warrants Ownership Limitation prohibits the exercise of all of the Tranche 2A Warrants held by the Reporting Persons and the Partners Managed Account into Shares.

 

As of the close of business on December 31, 2023, the Reporting Persons and the Partners Managed Account held 42,944,775 Tranche 2B Warrants (the “Tranche 2B Warrants”) exercisable for an aggregate of 42,944,775 Shares represented by 1,717,791 ADSs or under certain circumstances Pre-Funded Warrants to purchase the same number of Shares or ADSs. The Tranche 2B Warrants are exercisable within 60 days after the farudodstat announcement at an exercise price based on the higher of $8.15 per ADS and a 50% discount to the ADS VWAP measured across a specified period after the farudodstat announcement. The Tranche 2B Warrants may not be exercised (other than for Pre-Funded Warrants) to the extent that after giving effect to such exercise the holder (together with its affiliates and any other persons acting as a group together with the holder or any of its affiliates) would beneficially own, as calculated in accordance with Section 13(d) of the Exchange Act, more than 9.99% of the number of Shares outstanding immediately after giving effect to such exercise (the “Tranche 2B Warrants Ownership Limitation”). As of the close of business on December 31, 2023, the Tranche 2B Warrants Ownership Limitation prohibits the exercise of all of the Tranche 2B Warrants held by the Reporting Persons and the Partners Managed Account into Shares.

 

As of the close of business on December 31, 2023, (i) BVF beneficially owned 31,119,650 Shares, including 17,095,000 Shares underlying 17,095,000 Pre-Funded Warrants held by it and excluding (a) 10,901,775 Shares underlying 10,901,775 Pre-Funded Warrants held by it, (b) 22,944,200 Shares underlying 22,944,200 Tranche 2A Warrants held by it, and (c) 22,944,200 Shares underlying 22,944,200 Tranche 2B Warrants held by it, (ii) BVF2 beneficially owned 10,646,675 Shares, excluding (a) 21,253,475 Shares underlying 21,253,475 Pre-Funded Warrants held by it, (b) 17,417,875 Shares underlying 17,417,875 Tranche 2A Warrants held by it, and (c) 17,417,875 Shares underlying 17,417,875 Tranche 2B Warrants held by it, and (iii) Trading Fund OS beneficially owned 1,217,475 Shares, excluding (a) 2,430,425 Shares underlying 2,430,425 Pre-Funded Warrants held by it, (b) 1,991,825 Shares underlying 1,991,825 Tranche 2A Warrants held by it, and (c) 1,991,825 Shares underlying 1,991,825 Tranche 2B Warrants held by it.

 

BVF GP, as the general partner of BVF, may be deemed to beneficially own the 31,119,650 Shares beneficially owned by BVF.

 

BVF2 GP, as the general partner of BVF2, may be deemed to beneficially own the 10,646,675 Shares beneficially owned by BVF2.

 

Partners OS, as the general partner of Trading Fund OS, may be deemed to beneficially own the 1,217,475 Shares beneficially owned by Trading Fund OS.

 

BVF GPH, as the sole member of each of BVF GP and BVF2 GP, may be deemed to beneficially own the 41,766,325 Shares beneficially owned in the aggregate by BVF and BVF2.

 

Partners, as the investment manager of BVF, BVF2 and Trading Fund OS, and the sole member of Partners OS, may be deemed to beneficially own the 43,344,975 Shares beneficially owned in the aggregate by BVF, BVF2 and Trading Fund OS and held in the Partners Managed Account, including 361,175 Shares held in the Partners Managed Account, and excluding (a) 721,000 Shares underlying 721,000 Pre-Funded Warrants held by it, (b) 590,875 Shares underlying 590,875 Tranche 2A Warrants held by it, and (c) 590,875 Shares underlying 590,875 Tranche 2B Warrants held by it.

 

BVF Inc., as the general partner of Partners, may be deemed to beneficially own the 43,344,975 Shares beneficially owned by Partners.

 

Mr. Lampert, as a director and officer of BVF Inc., may be deemed to beneficially own the 43,344,975 Shares beneficially owned by BVF Inc.

 

The foregoing should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of any Shares owned by another Reporting Person. BVF GP disclaims beneficial ownership of the Shares beneficially owned by BVF. BVF2 GP disclaims beneficial ownership of the Shares beneficially owned by BVF2. Partners OS disclaims beneficial ownership of the Shares beneficially owned by Trading Fund OS. BVF GPH disclaims beneficial ownership of the Shares beneficially owned by BVF and BVF2. Each of Partners, BVF Inc. and Mr. Lampert disclaims beneficial ownership of the Shares beneficially owned by BVF, BVF2 and Trading Fund OS and held in the Partners Managed Account, and the filing of this statement shall not be construed as an admission that any such person or entity is the beneficial owner of any such securities.

 

(b)

Percent of class:

 

The following percentages are based on a denominator which is the sum of: (i) 416,811,380 Shares outstanding as of June 30, 2023, which is the total number of Shares outstanding as disclosed in Exhibit 99.2 to the Issuer’s Report of Foreign Issuer on Form 6-K filed with the Securities and Exchange Commission on August 11, 2023, and (ii) 17,095,000 Shares underlying certain Pre-Funded Warrants held by the Reporting Persons, as applicable.

 

As of the close of business on December 31, 2023 (i) BVF beneficially owned approximately 7.2% of the outstanding Shares, (ii) BVF2 beneficially owned approximately 2.6% of the outstanding Shares, (iii) Trading Fund OS beneficially owned less than 1% of the outstanding Shares, (iv) BVF GP may be deemed to beneficially own approximately 7.2% of the outstanding Shares, (v) BVF2 GP may be deemed to beneficially own approximately 2.6% of the outstanding Shares, (vi) Partners OS may be deemed to beneficially own less than 1% of the outstanding Shares, (vii) BVF GPH may be deemed to beneficially own approximately 9.6% of the outstanding Shares and (viii) each of Partners, BVF Inc. and Mr. Lampert may be deemed to beneficially own approximately 9.99% of the outstanding Shares (less than 1% of the outstanding Shares are held in the Partners Managed Account).

 

(c)

Number of shares as to which such person has:

 

(i)

Sole power to vote or to direct the vote

 

See Cover Pages Items 5-9.

 

(ii)

Shared power to vote or to direct the vote

 

See Cover Pages Items 5-9.

 

(iii)

Sole power to dispose or to direct the disposition of

 

See Cover Pages Items 5-9.

 

(iv)

Shared power to dispose or to direct the disposition of

 

See Cover Pages Items 5-9.

 

Item 5.

Ownership of Five Percent or Less of a Class.

 

Not Applicable.

 

Item 6.

Ownership of More than Five Percent on Behalf of Another Person.

 

BVF GP, BVF GPH, Partners, BVF Inc. and Mr. Lampert share voting and dispositive power over the Shares beneficially owned by BVF. BVF GPH, Partners, BVF Inc. and Mr. Lampert share voting and dispositive power over the Shares beneficially owned by BVF2. Partners, BVF Inc. and Mr. Lampert share voting and dispositive power over the Shares beneficially owned by Trading Fund OS and held in the Partners Managed Account.

 

Item 7.

Identification and Classification of the Subsidiary That Acquired the Security Being Reported on by the Parent Holding Company or Control Person.

 

Not Applicable.

 

Item 8.

Identification and Classification of Members of the Group.

 

See Exhibit 99.1 to the Schedule 13G filed with the Securities and Exchange Commission on March 6, 2023.

 

Item 9.

Notice of Dissolution of Group.

 

Not Applicable.

 

Item 10.

Certifications.

 

By signing below each of the undersigned certifies that, to the best of its knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

 

SIGNATURE

 

After reasonable inquiry and to the best of his knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: February 14, 2024

BIOTECHNOLOGY VALUE FUND, L.P.			BIOTECHNOLOGY VALUE TRADING FUND OS LP
By:	BVF I GP LLC, its general partner		By:	BVF Partners L.P., its investment manager
			By:	BVF Inc., its general partner
By:	/s/ Mark N. Lampert
	Mark N. Lampert		By:	/s/ Mark N. Lampert
	Chief Executive Officer			Mark N. Lampert
				President
BVF I GP LLC
			BVF GP HOLDINGS LLC
By:	/s/ Mark N. Lampert
	Mark N. Lampert		By:	/s/ Mark N. Lampert
	Chief Executive Officer			Mark N. Lampert
				Chief Executive Officer
BIOTECHNOLOGY VALUE FUND II, L.P.
			BVF PARTNERS L.P.
By:	BVF II GP LLC, its general partner
			By:	BVF Inc., its general partner
By:	/s/ Mark N. Lampert
	Mark N. Lampert		By:	/s/ Mark N. Lampert
	Chief Executive Officer			Mark N. Lampert
				President
BVF II GP LLC
			BVF INC.
By:	/s/ Mark N. Lampert
	Mark N. Lampert		By:	/s/ Mark N. Lampert
	Chief Executive Officer			Mark N. Lampert
				President
BVF PARTNERS OS LTD.
			/s/ Mark N. Lampert
By:	BVF Partners L.P., its sole member		MARK N. LAMPERT
By:	BVF Inc., its general partner
By:	/s/ Mark N. Lampert
	Mark N. Lampert
	President