Exagen grants director 37,500 stock options

Rhea-AI Filing Summary

EXAGEN INC. (XGN) director Bruce C. Robertson reported an award of a stock option covering 37,500 shares of common stock at an exercise price of $4.31 per share on June 9, 2026. The option expires on June 8, 2036 and becomes fully vested and exercisable on the earlier of the first anniversary of the grant date or the next annual stockholders’ meeting, contingent on his continued board service. Following this grant, he holds options on 55,500 shares directly.

Insider Trade Summary

Grant/Award: 37,500 shares

Grant/Award 1 txn

Insider Robertson Bruce C

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option(right to buy) F1	37,500	$0.00	$0.00

Holdings After Transaction: Stock Option(right to buy) — 55,500 contracts (Direct)

Footnotes (1)

1. F1. The entire number of shares subject to this option becomes fully vested and exercisable on the first to occur of (a) the first anniversary of the grant date or (b) the next occurring annual meeting of the Issuer's stockholders, subject to the Reporting Person's continued service on the board of directors of the Issuer through such vesting date.

Key Figures

Option shares granted: 37,500 shares Exercise price: $4.31 per share Underlying common shares: 37,500 shares +3 more

6 metrics

Option shares granted 37,500 shares Stock option award to Bruce C. Robertson on 2026-06-09

Exercise price $4.31 per share Conversion or exercise price of the granted stock options

Underlying common shares 37,500 shares Common stock underlying the granted option

Options held after transaction 55,500 shares Total option shares directly held by Bruce C. Robertson following the grant

Grant date 2026-06-09 Date of stock option award

Expiration date 2036-06-08 Expiration of the granted stock option

Key Terms

Stock Option(right to buy), exercise price, vested and exercisable, annual meeting of the Issuer's stockholders

4 terms

Stock Option(right to buy) financial

"security_title "Stock Option(right to buy)""

exercise price financial

"conversion_or_exercise_price of $4.3100 per share"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

vested and exercisable financial

"becomes fully vested and exercisable on the first to occur"

annual meeting of the Issuer's stockholders financial

"or (b) the next occurring annual meeting of the Issuer's stockholders"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did XGN director Bruce C. Robertson report in this Form 4?

Bruce C. Robertson reported a grant of stock options for 37,500 shares of EXAGEN INC. common stock at an exercise price of $4.31 per share, expiring June 8, 2036, subject to vesting conditions.

What is the exercise price of the new stock options reported for XGN?

The new stock options have an exercise price of $4.31 per share. This is the price at which Bruce C. Robertson can purchase EXAGEN INC. common shares once the options vest and become exercisable.

When do Bruce C. Robertson’s new XGN options vest?

The options become fully vested on the earlier of one year from the June 9, 2026 grant date or the next annual meeting of stockholders, provided he continues serving on EXAGEN INC.’s board until that vesting date.

How many XGN option shares does Bruce C. Robertson hold after this transaction?

After this grant, Bruce C. Robertson holds options on 55,500 shares of EXAGEN INC. common stock. This figure reflects his total directly held option position reported following the June 9, 2026 award.

Is the Form 4 transaction for XGN a purchase or an award of options?

The Form 4 reports a grant/award of stock options, not an open-market share purchase or sale. The transaction uses code “A,” indicating an acquisition of derivative securities as compensation rather than a market trade.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/19/2026 - 06:58 PM Accepted by SEC EDGAR 08/19/2026 - 06:57 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Robertson Bruce C

(Last) (First) (Middle)

1261 LIBERTY WAY

(Street)

VISTA CALIFORNIA 92081

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
EXAGEN INC. [ XGN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/09/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option(right to buy)	$4.31	06/09/2026		A		37,500		06/09/2026(1)	06/08/2036	Common Stock	37,500	$0	55,500	D

Explanation of Responses:

1. The entire number of shares subject to this option becomes fully vested and exercisable on the first to occur of (a) the first anniversary of the grant date or (b) the next occurring annual meeting of the Issuer's stockholders, subject to the Reporting Person's continued service on the board of directors of the Issuer through such vesting date.

Remarks:

	/s/ Jeffrey G. Black, as attorney-in-fact	08/19/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)