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SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940 		 
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1. Name and Address of Reporting Person*
PERCEPTIVE ADVISORS LLC
(Last) (First) (Middle)
51 ASTOR PLACE, 10TH FLOOR
(Street)
NEW YORK NY 10003
(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
11/09/2023 		3. Issuer Name and Ticker or Trading Symbol
CARGO Therapeutics, Inc. [ CRGX ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Series A-1 Convertible Preferred Stock (1) (1) Common Stock 2,579,502 (1) I See footnote(2)
1. Name and Address of Reporting Person*
PERCEPTIVE ADVISORS LLC
(Last) (First) (Middle)
51 ASTOR PLACE, 10TH FLOOR
(Street)
NEW YORK NY 10003
(City) (State) (Zip)
1. Name and Address of Reporting Person*
Perceptive Xontogeny Venture Fund II, LP
(Last) (First) (Middle)
51 ASTOR PLACE, 10TH FLOOR
(Street)
NEW YORK NY 10003
(City) (State) (Zip)
1. Name and Address of Reporting Person*
EDELMAN JOSEPH
(Last) (First) (Middle)
51 ASTOR PLACE, 10TH FLOOR
(Street)
NEW YORK NY 10003
(City) (State) (Zip)
Explanation of Responses:
1. Each share of the Issuer's Series A-1 convertible preferred stock will automatically convert into shares of the Issuer's common stock immediately upon the closing of the Issuer's initial public offering. The Series A-1 convertible preferred stock has no expiration date.
2. The securities are directly held by Perceptive Xontogeny Venture Fund II, L.P. ("PXV II"). Perceptive Venture Advisors, LLC (the "Venture Advisor") serves as the investment manager of PXV II and is controlled by Perceptive Advisors LLC (the "Advisor"), and Perceptive Xontogeny Venture II GP, LLC ("PXV GP") is the general partner of PXV II. Mr. Edelman is the managing member of PXV GP and the Advisor. The Venture Advisor, the Advisor, PXV GP and Mr. Edelman disclaim, for purposes of Section 16 of the Securities Exchange Act of 1934, beneficial ownership of such securities, except to the extent of his or its indirect pecuniary interest therein, and this report shall not be deemed an admission that they are the beneficial owner of such securities for purposes of Section 16 or for any other purposes.
/s/ Joseph Edelman, for Perceptive Advisors LLC, By: Joseph Edelman, its managing member 11/09/2023
/s/ Joseph Edelman, for Perceptive Xontogeny Venture Fund II, L.P., By: Perceptive Xontogeny Ventures II GP, LLC, its general partner, By: Joseph Edelman, its managing member 11/09/2023
/s/ Joseph Edelman 11/09/2023
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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