{"transactions":[{"id":1189662,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"ten_percent_owner":true}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":2,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"ten_percent_owner":true}}],"security":"Common Stock","published_at":"2025-03-27T20:15:57.000Z","date":"2025-03-25","kind":"sale","planned":false,"acquired":false,"shares":350000,"price":3.3,"value":1155000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\"). Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC."}],"balance_after":1758958,"source":{"system":"sec-edgar","filing":"0001140361-25-010700","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000114036125010700/form4.xml","form_type":"4"}},{"id":1349097,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"ten_percent_owner":true}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":2,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"ten_percent_owner":true}}],"security":"Common Stock","published_at":"2024-11-27T21:18:57.000Z","date":"2024-11-20","kind":"sale","planned":false,"acquired":false,"shares":200000,"price":3.3002,"value":660040.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\"). Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC."}],"balance_after":2108958,"source":{"system":"sec-edgar","filing":"0001140361-24-047978","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000114036124047978/form4.xml","form_type":"4"}},{"id":2942237,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":2,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2020-12-16T21:35:49.000Z","date":"2020-12-15","kind":"sale","acquired":false,"shares":125000,"price":12.0045,"value":1500562.5,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\"). Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC."}],"balance_after":2308958,"source":{"system":"sec-edgar","filing":"0001209191-20-063805","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000120919120063805/doc4.xml","form_type":"4"}},{"id":3038951,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":2,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2020-09-03T21:00:35.000Z","date":"2020-09-01","kind":"sale","acquired":false,"shares":126404,"price":12.5,"value":1580050.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\"). Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC."}],"balance_after":2433958,"source":{"system":"sec-edgar","filing":"0001209191-20-049452","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000120919120049452/doc4.xml","form_type":"4"}},{"id":3407764,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series H Redeemable Convertible Preferred Stock","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-23","kind":"exercise","acquired":false,"shares":53054485,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F12","text":"Includes 448,921 and 672,308 shares of common stock underlying the Series E shares held by NMSIC and NMSIC Focused, respectively."},{"field":"price","element":"transactionPricePerShare","label":"F14","text":"The Series H Redeemable Convertible Preferred Stock (\"Series H\") is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series H automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F14","text":"The Series H Redeemable Convertible Preferred Stock (\"Series H\") is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series H automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F14","text":"The Series H Redeemable Convertible Preferred Stock (\"Series H\") is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series H automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Represents securities held of record by NMSIC Focused."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":288913},"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407763,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series F Redeemable Convertible Preferred Stock","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-23","kind":"exercise","acquired":false,"shares":112958220,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F11","text":"The Series E Redeemable Convertible Preferred Stock (the \"Series E\") is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series E automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F13","text":"The Series F Redeemable Convertible Preferred Stock (\"Series F\") is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series F automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F13","text":"The Series F Redeemable Convertible Preferred Stock (\"Series F\") is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series F automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F13","text":"The Series F Redeemable Convertible Preferred Stock (\"Series F\") is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series F automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Represents securities held of record by NMSIC Focused."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":615123},"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407762,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series E Redeemable Convertible Preferred Stock","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-23","kind":"exercise","acquired":false,"shares":64239884,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F9","text":"The Series C Redeemable Convertible Preferred Stock (the \"Series C\") is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series C automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F11","text":"The Series E Redeemable Convertible Preferred Stock (the \"Series E\") is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series E automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F11","text":"The Series E Redeemable Convertible Preferred Stock (the \"Series E\") is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series E automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F11","text":"The Series E Redeemable Convertible Preferred Stock (the \"Series E\") is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series E automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F12","text":"Includes 448,921 and 672,308 shares of common stock underlying the Series E shares held by NMSIC and NMSIC Focused, respectively."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":1121230},"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407761,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series D Redeemable Convertible Preferred Stock","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-23","kind":"exercise","acquired":false,"shares":3373594,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F8","text":"Represents securities held of record by NMSIC."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The Series D Redeemable Convertible Preferred Stock (the \"Series D\") is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series D automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F10","text":"The Series D Redeemable Convertible Preferred Stock (the \"Series D\") is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series D automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F10","text":"The Series D Redeemable Convertible Preferred Stock (the \"Series D\") is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series D automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"Represents securities held of record by NMSIC."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":58882},"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407760,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series C Redeemable Convertible Preferred Stock","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-23","kind":"exercise","acquired":false,"shares":8081136,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F7","text":"The Series A-3 Redeemable Convertible Preferred Stock (the \"Series A-3\") is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series A-3 automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The Series C Redeemable Convertible Preferred Stock (the \"Series C\") is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series C automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The Series C Redeemable Convertible Preferred Stock (the \"Series C\") is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series C automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F9","text":"The Series C Redeemable Convertible Preferred Stock (the \"Series C\") is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series C automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"Represents securities held of record by NMSIC."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":141046},"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407759,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series A-3 Redeemable Convertible Preferred Stock","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-23","kind":"exercise","acquired":false,"shares":607168,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Represents warrants that previously entitled the holders to purchase Series E Redeemable Convertible Preferred Stock, which, pursuant to their terms, were settled in shares of the Issuer's Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The Series A-3 Redeemable Convertible Preferred Stock (the \"Series A-3\") is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series A-3 automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The Series A-3 Redeemable Convertible Preferred Stock (the \"Series A-3\") is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series A-3 automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"The Series A-3 Redeemable Convertible Preferred Stock (the \"Series A-3\") is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series A-3 automatically converted into Common Stock upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"Represents securities held of record by NMSIC."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":3306},"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407758,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Warrants","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-19","kind":"other","acquired":false,"shares":19825,"price":14.3235,"value":283963.3875,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The warrants are currently exercisable and will terminate upon closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The warrants are currently exercisable and will terminate upon closing of the Issuer's initial public offering."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F5","text":"Represents warrants that previously entitled the holders to purchase Series E Redeemable Convertible Preferred Stock, which, pursuant to their terms, were settled in shares of the Issuer's Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Represents securities held of record by NMSIC Focused."}],"balance_after":0,"derivative":{"exercise_price":14.3235,"underlying":"Common Stock","underlying_shares":19825},"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407757,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Warrants","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-19","kind":"exercise","acquired":false,"shares":69696,"price":1.84,"value":128240.64,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The warrants are currently exercisable and will expire on March 31, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The warrants are currently exercisable and will expire on March 31, 2026."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Represents securities held of record by NMSIC Focused."}],"balance_after":0,"derivative":{"exercise_price":1.84,"underlying":"Common Stock","underlying_shares":69696},"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407756,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Warrants","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-19","kind":"exercise","acquired":false,"shares":280127,"price":1.84,"value":515433.68,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The warrants are currently exercisable and will expire on January 19, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The warrants are currently exercisable and will expire on January 19, 2026."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Represents securities held of record by NMSIC Focused."}],"balance_after":0,"derivative":{"exercise_price":1.84,"underlying":"Common Stock","underlying_shares":280127},"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407755,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-23","kind":"exercise","acquired":true,"shares":2228500,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."}],"balance_after":2560362,"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407754,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-19","kind":"tax_withholding","acquired":false,"shares":49860,"price":18.58,"value":926398.8,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."}],"balance_after":331862,"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407753,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-19","kind":"other","acquired":true,"shares":19825,"price":14.3235,"value":283963.3875,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."}],"balance_after":381722,"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}},{"id":3407752,"issuer":{"id":935,"kind":"organization","name":"EXAGEN INC.","symbol":"XGN"},"owners":[{"id":81472,"kind":"organization","name":"NMSIC Co-Investment Fund, L.P.","position":1,"cik":"0001788331","reported_name":"NMSIC Co-Investment Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154818,"kind":"organization","name":"NMSIC Focused LLC","position":2,"cik":"0001788394","reported_name":"NMSIC Focused LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":81473,"kind":"organization","name":"Sun Mountain Capital Partners LLC","position":3,"cik":"0001788530","reported_name":"Sun Mountain Capital Partners LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-09-24T01:45:55.000Z","date":"2019-09-19","kind":"other","acquired":true,"shares":349823,"price":1.84,"value":643674.32,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares reported on this form are held of record by NMSIC Co-Investment Fund, L.P. (\"NMSIC\") and NMSIC Focused, LLC (\"NMSIC Focused\"). NMSIC is the sole member of NMSIC Focused. Sun Mountain Capital Partners LLC (\"Sun Mountain\") is the general partner of NMSIC. The controlling members of Sun Mountain are Brian Birk, Sally Coming and Lee Rand. As such, each of these entities and individuals may be deemed to share beneficial ownership of the shares held of record by NMSIC and NMSIC Focused. Each of Sun Mountain, Mr. Birk, Ms. Coming and Mr. Rand disclaims beneficial ownership of the securities held of record by NMSIC and NMSIC Focused."}],"balance_after":361897,"source":{"system":"sec-edgar","filing":"0000899243-19-024083","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1274737/000089924319024083/doc4.xml","form_type":"4"}}]}