Paul Schimmel - 27 May 2026 Form 4 Insider Report for aTYR PHARMA INC (ATYR)

Reporting relationship: Director
Issuer ticker: ATYR
Reported as of: 27 May 2026
Net transaction value: +$49,630
SEC form: 4
Accepted by SEC: 28 May 2026, 16:12:51 UTC
Prior SEC filing: 13 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Nancy E. Denyes, as Attorney-in-Fact

Key filing fact

Paul Schimmel filed Form 4 for aTYR PHARMA INC (ATYR) on 28 May 2026.

Key facts

This page summarizes Paul Schimmel's Form 4 filing for aTYR PHARMA INC (ATYR).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 28 May 2026, 16:12.

Change

Previous filing in this sequence was filed on 13 May 2026.
Current net transaction value: +$49,630.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001236447 Primary reporting owner

SCHIMMEL PAUL

Relationship: Director
Address: C/O ATYR PHARMA, INC., 10240 SORRENTO VALLEY ROAD, SUITE 300, SAN DIEGO
Signature: /s/ Nancy E. Denyes, as Attorney-in-Fact
Signature date: 28 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ATYR transaction

Common Stock

Purchase

Transaction value: $49,630
Shares: +100,000
Change %: +15%
Price: $0.4963
Shares after: 779,143
Date: 27 May 2026
Ownership: See Footnote
Footnotes: F1, F2

ATYR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 8,890
Date: 27 May 2026
Ownership: Direct

ATYR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,413,023
Date: 27 May 2026
Ownership: See Footnote
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Represents weighted average price for the shares. The shares were purchased at prices ranging from $0.4907 to $0.50 per share. The Reporting Person will provide to the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares purchased at each separate price.

Footnote F2

These shares are owned directly by Schimmel Revocable Trust U/A Dtd 9/6/2000. The Reporting Person and his spouse are trustees of the Schimmel Revocable Trust U/A Dtd 9/6/2000.

Footnote F3

These shares are owned directly by Paul Schimmel Prototype PSP, Paul Schimmel Trustee, FBO Paul Schimmel. The Reporting Person is the sole owner of the Paul Schimmel Prototype PSP, Paul Schimmel Trustee, FBO Paul Schimmel.