# EDGAR Filing Document

**Accession Number:** 0001274737
**File Stem:** 0000000000-25-006893
**Filing Date:** 2025-6
**Character Count:** 2302
**Document Hash:** 5bffb43fc8067a705cee622390833469
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000000000-25-006893.hdr.sgml**: 20250801

**ACCESSION NUMBER**: 0000000000-25-006893

**CONFORMED SUBMISSION TYPE**: UPLOAD

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250630

**FILED FOR**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** EXAGEN INC.
- **CENTRAL INDEX KEY:** 0001274737
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-MEDICAL LABORATORIES [8071]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** UPLOAD
- **SEC FILE NUMBER:** 333-288199

**BUSINESS ADDRESS:**
- **STREET 1:** 1261 LIBERTY WAY
- **CITY:** VISTA
- **STATE:** CA
- **ZIP:** 92081
- **BUSINESS PHONE:** (760) 560-1501

**MAIL ADDRESS:**
- **STREET 1:** 1261 LIBERTY WAY
- **CITY:** VISTA
- **STATE:** CA
- **ZIP:** 92081

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** EXAGEN DIAGNOSTICS INC
- **DATE OF NAME CHANGE:** 20031230
**PUBLIC REFERENCE ACCESSION NUMBER**: 0001628280-25-032393

## Text-Extract

```

                                                           June 30, 2025

John Aballi
President and Chief Executive Officer
Exagen Inc.
1261 Liberty Way
Vista, California 92081

       Re: Exagen Inc.
           Registration Statement on Form S-3
           Filed June 20, 2025
           File No. 333-288199
Dear John Aballi:

       This is to advise you that we have not reviewed and will not review your
registration
statement.

        Please refer to Rules 460 and 461 regarding requests for acceleration.
We remind you
that the company and its management are responsible for the accuracy and
adequacy of their
disclosures, notwithstanding any review, comments, action or absence of action
by the staff.

       Please contact Robert Augustin at 202-551-8483 with any questions.

                                                           Sincerely,

                                                           Division of
Corporation Finance
                                                           Office of Industrial
Applications and
                                                           Services
cc:   Jason Miller

```

### Attached PDF Documents

**Attachment 1:** `filename1`

_No text found in this document._