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Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2025
Jan. 30, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Trading Symbol PI    
Entity Registrant Name IMPINJ, INC.    
Entity Central Index Key 0001114995    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Large Accelerated Filer    
Entity Shell Company false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Small Business false    
Entity Common Stock, Shares Outstanding   30,231,686  
Entity Public Float     $ 2.9
Entity Interactive Data Current Yes    
Title of 12(b) Security Common Stock, $0.001 par value per share    
Security Exchange Name NASDAQ    
Entity File Number 001-37824    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 91-2041398    
Entity Address, Address Line One 400 Fairview Avenue North    
Entity Address, Address Line Two Suite 1200    
Entity Address, City or Town Seattle    
Entity Address, State or Province WA    
Entity Address, Postal Zip Code 98109    
City Area Code 206    
Local Phone Number 517-5300    
Document Annual Report true    
Document Transition Report false    
Auditor Name Ernst & Young LLP    
Auditor Firm ID 42    
Auditor Location Seattle, Washington    
Auditor Opinion

We have audited the accompanying consolidated balance sheets of Impinj, Inc. (the Company) as of December 31, 2025 and 2024, the related consolidated statements of operations, comprehensive income (loss), changes in stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2025, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework), and our report dated February 9, 2026 expressed an unqualified opinion thereon.

    
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

The information required by Part III of this report, to the extent not set forth herein, is incorporated in this report by reference to the registrant’s definitive proxy statement relating to its 2026 annual meeting of stockholders. The definitive proxy statement will be filed with the Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended December 31, 2025.