Ownership Submission
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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Novartis Institutes for BioMedical Research, Inc.
 2. Date of Event Requiring Statement (Month/Day/Year)
04/18/2018		 3. Issuer Name and Ticker or Trading Symbol
Surface Oncology, Inc. [SURF]
(Last)
(First)
(Middle)
250 MASSACHUSETTS AVENUE		 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 Original Filed(Month/Day/Year)
(Street)

CAMBRIDGE, MA 02139		 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
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)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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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 of Derivative Security: 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 Preferred Stock   (1)   (1) Common Stock 2,272,726 $ (1) D (2)  
Series A-1 Preferred Stock   (3)   (3) Common Stock 909,090 $ (3) D (2)  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Novartis Institutes for BioMedical Research, Inc.
250 MASSACHUSETTS AVENUE
CAMBRIDGE, MA 02139		     X    
NOVARTIS AG
LICHTSTRASSE 35
BASEL, V8 CH 4056		     X    

Signatures

NOVARTIS INSTITUTES FOR BIOMEDICAL RESEARCH, INC., By: /s/ Scott Brown, Authorized Signatory 04/18/2018
**Signature of Reporting Person Date
NOVARTIS AG, By: /s/ Christian Rehm, Authorized Signatory 04/18/2018
**Signature of Reporting Person Date
By: /s/ Katja Roth Pellanda, Authorized Signatory 04/18/2018
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) The 1,571,429 shares of Series A Preferred Stock held by the Reporting Person will automatically convert upon the closing of the Issuer's initial public offering into the number of shares of the Issuer's Common Stock shown in column 3 without payment or further consideration. The shares have no expiration date.
(2) The shares are held directly by Novartis Institutes for BioMedical Research, Inc. ("NIBRI"). NIBRI is an indirect wholly-owned subsidiary of, and controlled by, Novartis AG.
(3) The 5,214,286 shares of Series A-1 Preferred Stock held by the Reporting Person will automatically convert upon the closing of the Issuer's initial public offering into the number of shares of the Issuer's Common Stock shown in column 3 without payment or further consideration. The shares have no expiration date.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

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