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EXAGEN INC.

For the period ended Mar 31, 2026. Filed May 11, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2026 · Filed May 11, 2026

XGN$7.10+22.2%Stored close · as of Nov 9, 2026

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Item 6. Exhibits

Incorporated by Reference
Exhibit NumberExhibit DescriptionFormFile No.ExhibitExhibit Filing DateFiled/Furnished Herewith
3.1Amended and Restated Certificate of Incorporation.8-K001-390493.19/23/2019
3.2Amended and Restated Bylaws.8-K001-390493.13/22/2021
3.3Amendment to Amended and Restated Bylaws, dated January 19, 2023.8-K001-390493.11/23/2023
4.1Specimen stock certificate evidencing the shares of common stock.S-1/A333-2334464.19/9/2019
4.2Form of Common Stock Purchase Warrant issued to investors by the Company in connection with private placement financings.S-1/A333-2334464.49/9/2019
4.3Form of Common Stock Purchase Warrant to purchase common stock issued to investors by the Company in 2016.S-1/A333-2334464.89/9/2019
4.4Form of Exchange Warrant10-Q001-390494.58/9/2021
4.5Warrant Certificate, dated April 25, 2025, issued by the Company to Perceptive Credit Holdings IV, LP.8-K001-390494.14/28/2025
10.1#Amended & Restated Non-Employee Director Compensation ProgramX
31.1Certificate of Principal Executive Officer, pursuant to Rule 13a-14(a)/15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.X
31.2Certificate of Principal Financial Officer, pursuant to Rule 13a-14(a)/15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.X
32.1*Certifications Pursuant to U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Public Company Accounting Reform and Investor Protection Act of 2002.X
101.INSInline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.X
101.SCHInline XBRL Taxonomy Extension Schema Document.X
101.CALInline XBRL Taxonomy Extension Calculation Linkbase Document.X
101.DEFInline XBRL Taxonomy Extension Definition Linkbase Document.X
101.LABInline XBRL Taxonomy Extension Labels Linkbase Document.X
101.PREInline XBRL Taxonomy Extension Presentation Linkbase Document.X
104The cover page from the Company's Quarterly Report on Form 10-Q for the quarter ended March 31, 2026, has been formatted in Inline XBRL.X

*Furnished herewith. This certification is deemed not filed for purpose of section 18 of the Exchange Act or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference into any filing under the Securities Act or the Exchange Act.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.