Is Paul Schimmel’s aTyr Pharma (ATYR) share ownership direct or indirect?

The reported 100,000-share purchase was added to indirect holdings associated with Paul Schimmel. The filing explains that the shares are owned by entities such as the Schimmel Revocable Trust and a prototype PSP, with Schimmel serving as trustee or sole owner.

Director at aTyr Pharma (NASDAQ: ATYR) adds 100K shares

Filing Impact

(Neutral)

Filing Sentiment

(Positive)

Form Type

Rhea-AI Filing Summary

aTyr Pharma director Paul Schimmel reported an open-market purchase of 100,000 shares of aTyr Pharma common stock on May 27, 2026 at a weighted average price of $0.4963 per share.

According to the filing, these shares were bought in multiple trades between $0.4907 and $0.50 per share and are held indirectly through entities associated with Schimmel as noted in the footnotes.

Insider Trade Summary

Net Buyer: 100,000 shares ($49,630)

Net Buy 3 txns

Insider SCHIMMEL PAUL

Role null

Bought 100,000 shs ($50K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	100,000	$0.4963	$50K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 779,143 shares (Indirect, See Footnote); Common Stock — 8,890 shares (Direct, null)

Footnotes (1)

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. 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. 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.

Key Figures

Shares purchased: 100,000 shares Weighted average price: $0.4963/share Price range: $0.4907–$0.50/share +3 more

6 metrics

Shares purchased 100,000 shares Open-market purchase on May 27, 2026

Weighted average price $0.4963/share Average price for 100,000-share purchase

Price range $0.4907–$0.50/share Range of individual trades in the purchase

Net buy shares 100,000 shares Net buy direction in transaction summary

Indirect holding after purchase (account) 779,143 shares Total shares for the account that purchased 100,000 shares

Direct holding 8,890 shares Directly owned common stock position reported

Key Terms

open-market purchase, weighted average price, indirect ownership, Schimmel Revocable Trust, +1 more

5 terms

open-market purchase financial

"transaction_action: open-market purchase"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

weighted average price financial

"Represents weighted average price for the shares."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

indirect ownership financial

"ownership_type: indirect; nature_of_ownership: See Footnote"

Schimmel Revocable Trust financial

"These shares are owned directly by Schimmel Revocable Trust U/A Dtd 9/6/2000."

Prototype PSP financial

"These shares are owned directly by Paul Schimmel Prototype PSP, Paul Schimmel Trustee, FBO Paul Schimmel."

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Form 4 Insider Transactions: What Each Field Means →

05/28/2026 - 04:12 PM

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^*

SCHIMMEL PAUL

(Last)

(First)

(Middle)

C/O ATYR PHARMA, INC.

10240 SORRENTO VALLEY ROAD, SUITE 300

(Street)

SAN DIEGO

CALIFORNIA

92121

(City)

(State)

(Zip)

UNITED STATES

(Country)

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

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)
05/27/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/27/2026		P		100,000	A	$0.4963⁽¹⁾	779,143	I	See Footnote⁽²⁾
Common Stock								8,890	D
Common Stock								1,413,023	I	See Footnote⁽³⁾

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. 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.

2. 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.

3. 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.

	/s/ Nancy E. Denyes, as Attorney-in-Fact	05/28/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did aTyr Pharma (ATYR) report for Paul Schimmel?

aTyr Pharma director Paul Schimmel reported buying 100,000 shares of common stock. The Form 4 shows this was an open-market purchase on May 27, 2026, increasing his indirect ownership through related entities referenced in the filing footnotes.

At what price did Paul Schimmel buy aTyr Pharma (ATYR) shares?

Paul Schimmel bought 100,000 aTyr Pharma shares at a weighted average price of $0.4963. The filing states individual trades occurred between $0.4907 and $0.50 per share, with full price details available on request to the parties listed.

How many aTyr Pharma (ATYR) shares did Paul Schimmel acquire in this Form 4?

The Form 4 reports that Paul Schimmel acquired 100,000 shares of aTyr Pharma common stock. These were open-market purchases executed on May 27, 2026, with the shares held indirectly through entities identified in the accompanying ownership footnotes.

What does the weighted average price mean in the aTyr Pharma (ATYR) Form 4?

The weighted average price of $0.4963 reflects multiple trades making up the 100,000-share purchase. The filing notes that shares were bought between $0.4907 and $0.50, and detailed trade-by-trade pricing is available from Schimmel, the company, or SEC staff upon request.