Surface Oncology (SURF) 10-K/A 1 May 23 2022 FY Annual report (amended) Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2022	Mar. 06, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	true
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	001-38459
Entity Registrant Name	SURFACE ONCOLOGY, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-5543980
Entity Address, Address Line One	50 Hampshire Street
Entity Address, Address Line Two	8th Floor
Entity Address, City or Town	Cambridge
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02139
City Area Code	617
Local Phone Number	714-4096
Title of 12(b) Security	Common stock, $0.0001
Trading Symbol	SURF
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
ICFR Auditor Attestation Flag	false
Entity Shell Company	true
Entity Public Float			$ 85,420,850
Entity Common Stock, Shares Outstanding		60,716,873
Entity Central Index Key	0001718108
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	238
Auditor Location	Boston, Massachusetts
Amendment Description	Surface Oncology, Inc. is filing this Amendment No. 1 (the “Amendment No. 1”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2022 (the “Original Form 10-K”), filed with the Securities and Exchange Commission (the “SEC”) on March 9, 2023, only for the purpose of including the Part III information required under the instructions to Form 10-K and the general rules and regulations under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), which information was previously omitted from the Original Form 10-K in reliance on General Instruction G(3) to Form 10-K, which permits the omitted information to be incorporated in the Original Form 10-K by reference from our definitive proxy statement if such statement is filed no later than 120 days after our fiscal year-end. This Amendment No. 1 amends and restates only Part III, Items 10, 11, 12, 13, and 14, and amends Part IV, Item 15 of the Original Form 10-K. In addition, this Amendment No. 1 deletes the reference on the cover of the Original Form 10-K to the incorporation by reference of portions of our proxy statement into Part III of the Original Form 10-K. No other Items of the Original Form 10-K have been amended or revised in this Form 10-K/A, and all such other Items shall be as set forth in the Original Form 10-K. In addition, pursuant to SEC rules, Item 15 of Part IV of the Original Form 10-K is hereby amended solely to include, as Exhibits 31.3 and 31.4, new certifications of our principal executive officer and principal financial officer pursuant to Rule 13a-14(a) under the Exchange Act. Because no financial statements are included in this Amendment No. 1 and this Amendment No. 1 does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 of such certifications have been omitted. We are not including new certifications required by Rule 13a-14(b) under the Exchange Act as no financial statements are included in this Amendment No. 1. In addition, no other information has been updated for any subsequent events occurring after March 9, 2023, the date of the filing of the Original Form 10-K. Accordingly, this Amendment No. 1 should be read in conjunction with the Original Form 10-K and our other filings made with the SEC subsequent to the filing of the Original Form 10-K. Unless the context otherwise requires, references in this Amendment No. 1 to “Surface,” “Surface Oncology,” the “Company,” “we,” “our,” or “us” mean Surface Oncology, Inc., a Delaware corporation, and its consolidated subsidiaries.