As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 9/23/19  Tullis Dickerson Cap Focus III LP 4          10% Owner²  1:24K  Exagen Inc.                       Donnelley Fin’l S… 06/FA 
          Tullis Dickerson Partners III, L.L.C.
          Tullis Growth Fund II, L.P.
          Tullis Growth Fund, L.P.
 9/23/19  Hunt Woody L                      4          10% Owner²  1:26K  Exagen Inc.                       Donnelley Fin’l S… 06/FA 
          Hunt Guaranty Inc.
          Hunt Holdings Ltd. Partnership
          HuntVest, LLC
 9/23/19  Sun Mountain Capital Partners LLC 4          10% Owner²  1:28K  Exagen Inc.                       Donnelley Fin’l S… 06/FA 
          NMSIC Co-Investment Fund, L.P.
          NMSIC Focused LLC
 9/23/19  Pallares Ebetuel                  4          Director²   1:12K  Exagen Inc.                       Donnelley Fin’l S… 06/FA 
 9/23/19  Tullis James L L                  4          Dir.,%Own.² 1:28K  Exagen Inc.                       Donnelley Fin’l S… 06/FA 
 9/23/19  Mnaymneh Sami                     4          10% Owner²  1:12K  Exagen Inc.                       Donnelley Fin’l S… 06/FA 
          H.I.G. Bio-Exagen, L.P.
          H.I.G.-GPII, Inc.
          Tamer Anthony
 9/23/19‡ Exagen Inc.                       8-K:5,8,9   9/23/19    3:227K                                   Donnelley … Solutions/FA 

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‡	A non-Insider-Ownership Filing that was accepted after the SEC “closed” at 5:30:00pm ET.  The legal “Filed As Of” date may be the next, or another, day.
¹	Filing/Form Types:
	4	Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 { The Filer is an Insider² of the Issuer }.
	8-K	Current Report — Form 8-K { Item 1: Business & Operations;  2: Financial Info;  3: Securities & Trading;  4: Accountants & Accounting;  5: Governance & Management;  6: Asset-Backed Securities;  7: Disclosures;  8: Events;  9: Financials }.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.