SEC FORM 3

SEC FORM 3SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

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1. Name and Address of Reporting Person^*

Yaras Brandon

(Last)

(First)

(Middle)

10240 SORRENTO VALLEY ROAD

SUITE 300

(Street)

SAN DIEGO

CALIFORNIA

92121

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
10/01/2026

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

3a. Foreign Trading Symbol

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

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

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

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Employee Stock Option (right to buy)	⁽¹⁾	05/10/2032	Common Stock	70,000	$3.48	D
Employee Stock Option (right to buy)	⁽²⁾	02/16/2033	Common Stock	28,450	$2.195	D
Employee Stock Option (right to buy)	⁽³⁾	01/05/2034	Common Stock	55,000	$1.5	D
Employee Stock Option (right to buy)	⁽⁴⁾	01/08/2035	Common Stock	84,142	$3.74	D
Employee Restricted Stock Unit	⁽⁵⁾	⁽⁵⁾	Common Stock	88,000	$0⁽⁶⁾	D

Explanation of Responses:

1. 1/4 of the shares subject to this option vested and became exercisable on May 10, 2023, and the remainder shares vested in 36 equal monthly installments, such that this option became fully exercisable on May 10, 2026. This option is subject to accelerated vesting upon termination without cause upon change of control of the issuer.

2. The shares subject to this option shall vest and become exercisable in 48 equal monthly installments beginning March 16, 2023, such that this option will be fully exercisable on February 16, 2027. This option is subject to accelerated vesting upon termination without cause upon change of control of the issuer.

3. The shares subject to this option shall vest and become exercisable in 48 equal monthly installments beginning February 5, 2024, such that this option will be fully exercisable on January 5, 2028. This option is subject to accelerated vesting upon termination without cause upon change of control of the issuer.

4. The shares subject to this option shall vest and become exercisable in 48 equal monthly installments beginning February 8, 2025, such that this option will be fully exercisable on January 8, 2029. This option is subject to accelerated vesting upon termination without cause upon change of control of the issuer.

5. The restricted stock unit (RSU) shall vest in three equal annual installments beginning on January 9, 2027, such that the RSUs will fully vest January 9, 2029. The RSUs are subject to accelerated vesting upon termination without cause upon a change of control of the Issuer.

6. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Remarks:

No securities are beneficially owned.

	/s/ Brandon Yaras	10/01/2026
	** 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 5 (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 3: SEC 1473 (03-26)