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Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2025
Feb. 19, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Entity File Number 001-40671    
Entity Registrant Name NUVALENT, INC.    
Entity Central Index Key 0001861560    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 81-5112298    
Entity Address, Address Line One One Broadway    
Entity Address, Address Line Two 14th Floor    
Entity Address, City or Town Cambridge    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 02142    
City Area Code 857    
Local Phone Number 357-7000    
Title of 12(b) Security Class A Common Stock, $0.0001 par value per share    
Trading Symbol NUVL    
Security Exchange Name NASDAQ    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Auditor Name KPMG LLP    
Auditor Firm ID 185    
Auditor Location Boston, Massachusetts    
Auditor Opinion

Opinions on the Consolidated Financial Statements and Internal Control Over Financial Reporting

We have audited the accompanying consolidated balance sheets of Nuvalent, Inc. and subsidiary (the Company) as of December 31, 2025 and 2024, the related consolidated statements of operations and comprehensive loss, stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2025, and the related notes (collectively, the consolidated financial statements). We also have audited the Company’s internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2025, in conformity with U.S. generally accepted accounting principles. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025 based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Public Float     $ 3.6
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s Proxy Statement for its 2026 Annual Meeting of Stockholders, which the registrant intends to file with the Securities and Exchange Commission not later than 120 days after the registrant’s fiscal year ended December 31, 2025, are incorporated by reference into Part III of this Annual Report on Form 10-K.

    
Common Class A [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   73,181,747  
Common Class B [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   5,435,254