Filing Details

 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

 

SCHEDULE 13G

 

Under the Securities Exchange Act of 1934

(Amendment No. 2)*

 

Ambrx Biopharma Inc.

(Name of Issuer)

 

Ordinary shares, par value US $0.0001 per share, represented by American Depositary Shares

(Title of Class of Securities)

 

02290A102**

(CUSIP Number)

 

April 24, 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)

 

*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 the disclosures provided in a prior cover page.

 

**There is no CUSIP number assigned to the ordinary shares. The CUSIP number 02290A102 has been assigned to the American Depositary Shares (“ADSs”) of the Issuer, which are quoted on the New York Stock Exchange under the symbol “AMAM.” Each ADS represents seven (7) ordinary shares.

 

The information required in 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).

 

 

 

CUSIP No. 02290A102

SCHEDULE 13G

 

1	NAME OF REPORTING PERSONS   Commodore Capital LP
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION   Delaware, USA

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	5	SOLE VOTING POWER   0
	6	SHARED VOTING POWER   31,181,983*
	7	SOLE DISPOSITIVE POWER   0
	8	SHARED DISPOSITIVE POWER   31,181,983*

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON   31,181,983*
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES	☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)   8.1%*
12	TYPE OF REPORTING PERSON   IA

 

*See Item 4 for additional information.

 

 

CUSIP No. 02290A102

SCHEDULE 13G

 

1	NAME OF REPORTING PERSONS   Commodore Capital Master 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 SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	5	SOLE VOTING POWER   0
	6	SHARED VOTING POWER   31,181,983*
	7	SOLE DISPOSITIVE POWER   0
	8	SHARED DISPOSITIVE POWER   31,181,983*

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON   31,181,983*
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES	☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)   8.1%*
12	TYPE OF REPORTING PERSON   OO

 

*See Item 4 for additional information.

 

 

CUSIP No. 02290A102

SCHEDULE 13G

 

Item 1.

(a) Name of Issuer

 

Ambrx Biopharma Inc. (the “Issuer”)

 

Item 1.

(b) Address of Issuer’s Principal Executive Offices

 

10975 Torrey Pines Road, La Jolla, California 92037

 

Item 2.	(a, b, c) Names of Person Filing, Address of Principal Business Office, Citizenship:
	This report on Schedule 13G is being filed by Commodore Capital LP, a Delaware limited partnership (the “Firm”) and Commodore Capital Master LP, a Cayman Islands exempted limited partnership (“Commodore Master”). The address for the Firm and Commodore Master is: 444 Madison Avenue, Floor 35, New York, New York 10022.

 

Item 2.

(d) Title of Class of Securities

 

Ordinary shares, par value US $0.0001 per share (“Ordinary Shares”) (represented by American Depositary Shares (“ADS”), each of which represents seven Ordinary Shares)

 

Item 2.

(e) CUSIP No.:

 

02290A102 (This CUSIP number applies to the ADS. No CUSIP has been assigned to the Ordinary Shares)

 

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:

 

N/A

 

 

CUSIP No. 02290A102

SCHEDULE 13G

 

Item 4.

Ownership

 

As reported in the cover pages to this report, the ownership information with respect to the Firm is as follows:

 

(a) Amount Beneficially Owned: 31,181,983*

 

(b) Percent of Class: 8.1%*

 

(c) Number of Shares as to which such person has:

 

(i) Sole power to vote or to direct the vote: 0

 

(ii) Shared power to vote or to direct the vote: 31,181,983*

 

(iii) Sole power to dispose or to direct the disposition of: 0

 

(iv) Shared power to dispose or to direct the disposition of: 31,181,983*

 

As reported in the cover pages to this report, the ownership information with respect to Commodore Master is as follows:

 

(a) Amount Beneficially Owned: 31,181,983*

 

(b) Percent of Class: 8.1%*

 

(c) Number of Shares as to which such person has:

 

(i) Sole power to vote or to direct the vote: 0

 

(ii) Shared power to vote or to direct the vote: 31,181,983*

 

(iii) Sole power to dispose or to direct the disposition of: 0

 

(iv) Shared power to dispose or to direct the disposition of: 31,181,983*

 

*The Firm is the investment manager to Commodore Master. As of April 24, 2023, the Firm may be deemed to beneficially own an aggregate of 4,454,569 ADSs, representing 31,181,983 Ordinary Shares of the Issuer. The Firm, as the investment manager to Commodore Master, may be deemed to beneficially own these securities. Michael Kramarz and Robert Egen Atkinson are the managing partners of the Firm and exercise investment discretion with respect to these securities. Ownership percentages are based on 386,486,014 Ordinary Shares reported as issued and outstanding as of March 31, 2023 in the Issuer’s Other Preliminary Proxy Statement on Form PRE 14A filed with the Securities and Exchange Commission on April 18, 2023.

 

Item 5.	Ownership of Five Percent or Less of a Class
	If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [ ].

 

Item 6.

Ownership of More Than Five Percent on Behalf of Another Person

 

Not Applicable.

 

Item 7.

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

 

Not Applicable.

 

 

CUSIP No. 02290A102

SCHEDULE 13G

 

Item 8.

Identification and Classification of Members of the Group

 

Not Applicable.

 

Item 9.

Notice of Dissolution of Group

 

Not Applicable.

 

Item 10.	Certification
	By signing below I certify that, to the best of my 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.

 

Exhibit Index

 

1. Joint Filing Agreement dated as of March 3, 2023, by and between Commodore Capital LP and Commodore Capital Master LP (incorporated by reference to Exhibit 1 to the Schedule 13G filed with the Securities and Exchange Commission on March 3, 2023).

 

 

CUSIP No. 02290A102

SCHEDULE 13G

 

SIGNATURE

 

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

 

Dated: April 27, 2023

 

	Commodore Capital LP
	By:	/s/ Michael Kramarz
		Michael Kramarz, Managing Partner
	Commodore Capital Master LP
	By:	/s/ Michael Kramarz
		Michael Kramarz, Authorized Signatory