CFO granted 412,500 options at aTyr Pharma (ATYR) Form 4 detail

Rhea-AI Filing Summary

aTyr Pharma’s Chief Financial Officer, Jill Marie Broadfoot, reported a grant of 412,500 Employee Stock Options on January 9, 2026. The options have an exercise price of $0.7127 per share and were granted at $0 cost, increasing her derivative holdings to 412,500 options.

According to the filing, these options vest in 36 equal monthly installments beginning February 9, 2026 and are scheduled to be fully exercisable on January 9, 2029, with potential accelerated vesting if she is terminated without cause following a change of control. After this grant, she beneficially owns 35,104 shares of common stock, including shares acquired through the company’s 2015 Employee Purchase Plan.

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

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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^*

Broadfoot Jill Marie

(Last) (First) (Middle)

10240 SORRENTO VALLEY ROAD

SUITE 300

(Street)

SAN DIEGO CA 92121

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
aTYR PHARMA INC [ ATYR ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
01/09/2026

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

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

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

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
Common Stock								35,104(1)	D

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
Employee Stock Option (right to buy)	$0.7127	01/09/2026		A		412,500		(2)	01/09/2036	Common Stock	412,500	$0	412,500	D

Explanation of Responses:

1. Includes 841 shares acquired on May 15, 2025 and 2,500 shares acquired on November 14, 2025 under the Company's 2015 Employee Purchase Plan.

2. The shares subject to this option shall vest and become exercisable in 36 equal monthly installments beginning February 9, 2026, such that this option will be fully exercisable on January 9, 2029. This option is subject to accelerated vesting upon termination without cause upon change of control of the issuer.

	/s/ Nancy E. Denyes, attorney-in-fact	01/09/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What insider transaction did aTyr Pharma (ATYR) report for its CFO?

The filing reports that aTyr Pharma’s CFO, Jill Marie Broadfoot, received a grant of 412,500 Employee Stock Options on January 9, 2026 at an exercise price of $0.7127 per share.

How do Jill Broadfoot’s new stock options at aTyr Pharma (ATYR) vest?

The options vest and become exercisable in 36 equal monthly installments starting February 9, 2026, and are expected to be fully exercisable on January 9, 2029, with potential acceleration upon termination without cause after a change of control.

How many aTyr Pharma (ATYR) common shares does the CFO own after this Form 4?

After the reported transactions, Jill Broadfoot beneficially owns 35,104 shares of aTyr Pharma common stock, including shares acquired under the company’s 2015 Employee Purchase Plan.

What was the cost of the employee stock options granted to the aTyr Pharma CFO?

The 412,500 Employee Stock Options were granted at a price of $0 for the derivative security itself, with an exercise price of $0.7127 per underlying share.

Does the aTyr Pharma CFO’s stock option grant have any change-of-control protections?

Yes. The filing states that the option is subject to accelerated vesting if Jill Broadfoot is terminated without cause in connection with a change of control of the issuer.

Were any of the aTyr Pharma CFO’s shares acquired through an employee purchase plan?

Yes. The filing explains that her holdings include 841 shares acquired on May 15, 2025 and 2,500 shares acquired on November 14, 2025 under the company’s 2015 Employee Purchase Plan.