# EDGAR Filing Document

**Accession Number:** 0001274737
**File Stem:** 0001274737-26-000003
**Filing Date:** 2026-1
**Character Count:** 14365
**Document Hash:** 0179112ebc91d913f55338494f24263b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001274737-26-000003.hdr.sgml**: 20260112

**ACCESSION NUMBER**: 0001274737-26-000003

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20260111

**ITEM INFORMATION**: Results of Operations and Financial Condition

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260112

**DATE AS OF CHANGE**: 20260112

**FILER**: 

**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:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39049
- **FILM NUMBER:** 26524991

**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

?xml version='1.0' encoding='ASCII'? exdx-20260111

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**FORM 8-K** 

**CURRENT REPORT** 

**Pursuant to Section 13 or 15(d)** 

**of the Securities Exchange Act of 1934** 

**Date of Report (Date of earliest event reported): January 11, 2026** 

**EXAGEN INC.** 

**(Exact name of registrant as specified in its charter)** 

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| | | |
|:---|:---|:---|
| **Delaware** | **001-39049** | **20-0434866** |
| **(State or other jurisdiction**<br>**of incorporation)** | **(Commission**<br>**File Number)** | **(IRS Employer**<br>**Identification No.)** |

---

**1261 Liberty Way** 

**Vista, CA 92081** 

**(Address of principal executive offices) (Zip Code)** 

**(760) 560-1501** 

**(Registrant's telephone number, including area code)** 

**N/A** 

**(Former Name or Former Address, if Changed Since Last Report)** 

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading**<br>**Symbol(s)** | **Name of each exchange**<br>**on which registered** |
| **Common Stock, par value $0.001 per share** | **XGN** | **The Nasdaq Global Market** |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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**Item 2.02&nbsp;&nbsp;&nbsp;&nbsp;Results of Operations and Financial Condition.** 

On January 11, 2026, Exagen Inc. (the "Company") announced in a press release (the "Press Release") certain select preliminary unaudited financial information and results of operations for the three months and year ended December 31, 2025, based on currently available information. A copy of the Press Release issued by the Company is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The Company's financial closing procedures with respect to the select preliminary unaudited financial information and results of operations provided in the Press Release are not yet complete. These procedures often result in changes to accounts. As a result, the Company's final results may vary from the preliminary results and information presented in the Press Release. The Company undertakes no obligation to update or supplement the information and presented in the Press Release until it releases its financial statements for the three months and year ended December 31, 2025.

The select preliminary unaudited financial information and results of operations included in this Current Report on Form 8-K and in the Press Release have been prepared by, and are the responsibility of, the Company. BDO USA, P.C. ("BDO") has not audited, reviewed, compiled, or applied agreed-upon procedures with respect to the select preliminary unaudited financial information and results of operations included in the Press Release and this Current Report on Form 8-K. Accordingly, BDO does not express an opinion or any other form of assurance with respect to this information. The information provided in this Item 2.02 of this Current Report on Form 8-K shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as expressly set forth by specific reference in such filing or in this Current Report on Form 8-K.

**Item 8.01&nbsp;&nbsp;&nbsp;&nbsp;Other Events.** 

The following information contained in the Press Release is deemed "filed" for purposes of Section 18 of the Exchange Act and deemed incorporated by reference into this Item 8.01:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• The information included under the headings "Select Preliminary Unaudited 2025 Results," "Cautionary Note Regarding Select Preliminary Unaudited Financial Results," and "Forward Looking Statements."

**Item 9.01&nbsp;&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits.** 

(d) Exhibits

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| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| 99.1 | <u>[Press Release dated January 11, 2026](pressrelease-2025selectpre.htm)</u> |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

---

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | EXAGEN INC. | EXAGEN INC. |
| Date: January 12, 2026 | By: | /s/ Jeffrey G. Black |
|  |  | Jeffrey G. Black |
|  |  | Chief Financial Officer |

---

## Exhibit 99.1

![image.jpg](image.jpg)

**Exagen Inc. Announces Select Preliminary 2025 Financial Results** 

January 11, 2026

Carlsbad, CA—Exagen Inc. (Nasdaq: XGN), a leading provider of autoimmune testing, today announced select preliminary unaudited financial results for the fourth quarter and year ended December 31, 2025, in line with prior financial guidance.

**Select Preliminary Unaudited 2025 Results** 

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| | | |
|:---|:---|:---|
| | **Revenue** | **Revenue** |
| | **Three Months Ended<br>December 31, 2025** | **Twelve Months Ended<br>December 31, 2025** |
| **Total Revenue** | **$16M to $17M** | **$66M to $67M** |
| *Year-Over-Year Growth* | *17% to 24%* | *19% to 20%* |

---

---

| | |
|:---|:---|
| | **Other** |
| | **Twelve Months Ended<br>December 31, 2025** |
| AVISE CTD Volume | 136,000 to 137,000 |
| AVISE CTD Trailing 12-month (TTM) average selling price | $441 to $445 |
| Year-end cash and cash equivalents  | $32M |

---

The select preliminary unaudited financial results reported today represent:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Record full year 2025 revenue, an increase of at least 19% over 2024

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• AVISE CTD trailing 12-month (TTM) ASP expansion by at least $30 compared to 2024

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• AVISE CTD test volume growth of at least 13,000, an 11% increase over 2024

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Year-end cash and cash equivalents of $32 million, a $10 million increase over 2024

"I am pleased to report the completion of another strong year for Exagen in which we've continued to make substantial progress in building a great company; a testament to continued execution across our commercial, scientific, and operational teams," said

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John Aballi, President and CEO. "Based upon our preliminary results, we delivered significant topline growth, driven by both volume and ASP expansion, despite unexpected ASP headwinds in the second half of the year. We also strengthened our scientific and commercial teams and subsequently launched our first enhancements to the AVISE platform in several years, with more on the horizon. Our strong cash position and disciplined approach provide the flexibility to continue to invest in innovation and advance our strategy to change the standard of care in autoimmune disease while pursuing our goal of operating a profitable company."

**Cautionary Note Regarding Select Preliminary Unaudited Financial Results**

Exagen is providing the above select preliminary unaudited financial information and results of operations as of and for the three months and year ended December 31, 2025, based on currently available information. The company's financial closing procedures with respect to the estimated financial data provided above are not yet complete. These procedures often result in changes to accounts. The company's independent registered public accounting firm has not audited, reviewed, compiled or performed any procedures with respect to the select preliminary unaudited financial information and, accordingly, our independent registered public accounting firm does not express an opinion or any other form of assurance with respect thereto. As a result, the company's final results may vary from the preliminary results presented above. Management undertakes no obligation to update or supplement the information provided above until it releases its audited financial statements prepared in accordance with U.S. Generally Accepted Accounting Principles (GAAP) for the year ended December 31, 2025.

**About Exagen**

Exagen Inc. (Nasdaq: XGN) is a leading provider of autoimmune diagnostics, committed to transforming care for patients with chronic and debilitating autoimmune conditions. Based in San Diego County, California, Exagen's mission is to provide clarity in autoimmune disease decision making and improve clinical outcomes through its innovative testing portfolio. The company's flagship product, AVISE® CTD, enables clinicians to more effectively diagnose complex autoimmune conditions such as lupus, rheumatoid arthritis, and Sjögren's syndrome earlier and with greater accuracy. Exagen's laboratory specializes in the testing of rheumatic diseases, delivering precise and timely results, supported by a full suite of AVISE-branded tests for disease

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diagnosis, prognosis, and monitoring. With a focus on research, innovation, education, and patient-centered care, Exagen is dedicated to addressing the ongoing challenges of autoimmune disease management.

For more information, please visit Exagen.com or follow @ExagenInc on X (formerly known as Twitter).

**Forward Looking Statements**

Exagen cautions you that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. These statements are based on Exagen's current beliefs and expectations. Such forward-looking statements include, but are not limited to, statements regarding: Exagen's goals, strategies and ambitions; the potential utility and effectiveness of Exagen's services and testing solutions, additional enhancements to the AVISE platform; potential shareholder value and growth and profitability; preliminary financial information for 2025. The inclusion of forward-looking statements should not be regarded as a representation by Exagen that any of its plans will be achieved. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in Exagen's business, including, without limitation: delays in reimbursement and coverage decisions from Medicare and third-party payors and in interactions with regulatory authorities, and delays in ongoing and planned clinical trials involving its tests; Exagen's commercial success depends upon attaining and maintaining significant market acceptance of its testing products among rheumatologists, patients, third-party payors and others in the medical community; Exagen's ability to successfully execute on its business strategies; third-party payors not providing coverage and adequate reimbursement for Exagen's testing products, including Exagen's ability to collect on funds due; Exagen's ability to obtain and maintain intellectual property protection for its testing products; regulatory developments affecting Exagen's business; and other risks described in Exagen's prior press releases and Exagen's filings with the Securities and Exchange Commission (SEC), including under the heading "Risk Factors" in Exagen's Annual Report on Form 10-K for the year ended December 31, 2024, filed with the SEC on March 11, 2025, Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the SEC on November 4, 2025 and any subsequent filings with the SEC. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Exagen undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date hereof. All forward-looking statements

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are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995.

**Contact:**

Jeff Black, Chief Financial Officer

Exagen Inc.

<u>ir@exagen.com</u>

<br>