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aTYR Pharma CFO reports rights to 88,000 shares

The RSUs vest in three equal annual installments beginning January 9, 2027, and will fully vest January 9, 2029.

(Moderate)

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Form Type
3

Rhea-AI Filing Summary

aTYR Pharma CFO Brandon Yaras reports four direct employee stock option positions and 88,000 restricted stock units (RSUs); the remarks state that no securities are beneficially owned. The options relate to 70,000 shares at a $3.4800 exercise price, expiring May 10, 2032; 28,450 shares at $2.1950, expiring February 16, 2033; 55,000 shares at $1.5000, expiring January 5, 2034; and 84,142 shares at $3.7400, expiring January 8, 2035. Each RSU represents a contingent right to receive one common share.

Insider Yaras Brandon
Role Chief Financial Officer
Type Security Shares Price Value
holding Employee Stock Option (right to buy) F1 -- -- --
holding Employee Stock Option (right to buy) F2 -- -- --
holding Employee Stock Option (right to buy) F3 -- -- --
holding Employee Stock Option (right to buy) F4 -- -- --
holding Employee Restricted Stock Unit F6, F5 -- -- --
Holdings After Transaction: Employee Stock Option (right to buy) — 237,592 contracts (Direct); Employee Restricted Stock Unit — 88,000 contracts (Direct)
Footnotes (6)
  1. F1. 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. F2. 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. F3. 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. F4. 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. F5. 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. F6. Each RSU represents a contingent right to receive one share of the Issuer's common stock.
Employee stock option position 70,000 underlying common shares; $3.4800 exercise price per share Expires May 10, 2032
Employee stock option position 28,450 underlying common shares; $2.1950 exercise price per share Expires February 16, 2033
Employee stock option position 55,000 underlying common shares; $1.5000 exercise price per share Expires January 5, 2034
Employee stock option position 84,142 underlying common shares; $3.7400 exercise price per share Expires January 8, 2035
Restricted stock units 88,000 RSUs Three equal annual vesting installments beginning January 9, 2027
Employee Restricted Stock Unit financial
"Employee Restricted Stock Unit"
accelerated vesting technical
"subject to accelerated vesting upon termination without cause"
A contract feature that makes stock awards, options, or restricted shares become owned or exercisable earlier than the original schedule. It shortens or cancels the waiting period so recipients can sell, transfer, or exercise their equity sooner — think of a timed lock that is unlocked ahead of schedule. It matters to investors because it changes when shares enter the market, who controls them, and how much dilution or ownership concentration happens.
contingent right technical
"Each RSU represents a contingent right to receive one share"
fully exercisable technical
"this option became fully exercisable on May 10, 2026"

FAQ

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

When do Brandon Yaras's ATYR RSUs vest?

The 88,000 RSUs vest in three equal annual installments beginning January 9, 2027, and will fully vest January 9, 2029. Each RSU represents a contingent right to receive one share of the issuer's common stock.

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

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Learn about SEC filing dates
SEC Form 3
FORM 3UNITED 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
OMB APPROVAL
OMB Number:3235-0104
Estimated average burden
hours per response:0.5
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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Financial Officer
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Employee Stock Option (right to buy) (1)05/10/2032Common Stock70,000$3.48D
Employee Stock Option (right to buy) (2)02/16/2033Common Stock28,450$2.195D
Employee Stock Option (right to buy) (3)01/05/2034Common Stock55,000$1.5D
Employee Stock Option (right to buy) (4)01/08/2035Common Stock84,142$3.74D
Employee Restricted Stock Unit (5) (5)Common Stock88,000$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 Yaras10/01/2026
** Signature of Reporting PersonDate
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)

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