Public ownership evidence

aTyr Pharma, Inc. Common Stock (ATYR) Ownership Disclosures

Read ATYR insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

aTyr Pharma, Inc. Common Stock: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-10-01
Trade date
2026-10-01
Reporting owners
Yaras Brandon
Code
A
Shares
410,000
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0002156611-26-000010
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read ATYR fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read ATYR fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity

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2026-10-012026-10-01Yaras BrandonA410,000Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Kalehua Capital Management LLC2026-06-302026-08-201,788,167$1,067,178None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2053,531$31,947None
Ensign Peak Advisors, Inc2025-09-302026-08-19414,732$299,188None
Kalehua Capital Management LLC2026-06-302026-08-151,788,167$1,067,178None
TORONTO DOMINION BANK2026-06-302026-08-1512,200$7,281Call
ADAR1 Capital Management, LLC2026-06-302026-08-1550,685$30,249None
DIADEMA PARTNERS LP2026-06-302026-08-1512,500$7,460Put
NFSG Corp2026-06-302026-08-151,979$1,181None
XTX Topco Ltd2026-06-302026-08-15226,678$135,281None
Qube Research & Technologies Ltd2026-06-302026-08-15126,996$75,791None
IFG Advisory, LLC2026-06-302026-08-1550$30None
Schonfeld Strategic Advisors LLC2026-06-302026-08-1550,880$30,364None
JANE STREET GROUP, LLC2026-06-302026-08-151,104,379$659,093None
JANE STREET GROUP, LLC2026-06-302026-08-15616,918$368,177None
JANE STREET GROUP, LLC2026-06-302026-08-1515,000$8,952Put
JANE STREET GROUP, LLC2026-06-302026-08-15178,600$106,588Call
HRT FINANCIAL LP2026-06-302026-08-15126,681$75,000None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15154,800$92,880Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15116,500$69,900Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15747,039$445,833None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15656,051$391,531None
Balyasny Asset Management L.P.2026-06-302026-08-1523,015$13,735None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-151,500$791None
MAI Capital Management2026-06-302026-08-1516,846$10,054None
Cerity Partners LLC2026-06-302026-08-154,419$2,638None
Cerity Partners LLC2026-06-302026-08-1512,038$7,184None
Cerity Partners LLC2026-06-302026-08-1512,775$7,624None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-153,063$1,828None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-151,362$813None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1514,183$8,464None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15491$293None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1545$27None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-157$4None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-152,591,397$1,546,546None
ROYAL BANK OF CANADA2026-06-302026-08-155,166$3,000None
CITADEL ADVISORS LLC2026-06-302026-08-1557,200$34,137Put
CITADEL ADVISORS LLC2026-06-302026-08-151,207,073$720,381None
CITADEL ADVISORS LLC2026-06-302026-08-15249,000$148,603Call
CITADEL ADVISORS LLC2026-06-302026-08-1534,994$20,884None
Larson Financial Group LLC2026-06-302026-08-15150$90None
GROUP ONE TRADING LLC2026-06-302026-08-15138,878$82,882None
Point72 Asset Management, L.P.2026-06-302026-08-1537,278$22,248None
TWO SIGMA INVESTMENTS, LP2026-06-302026-08-151,245,147$743,104None
GOLDMAN SACHS GROUP INC2026-06-302026-08-15261,420$156,015None
GOLDMAN SACHS GROUP INC2026-06-302026-08-15379,788$226,657None
HSBC HOLDINGS PLC2026-06-302026-08-1566,185$38,361None
RAYMOND JAMES FINANCIAL INC2026-06-302026-08-153,629$2,166None
RAYMOND JAMES FINANCIAL INC2026-06-302026-08-1513,172$7,861None
BARCLAYS PLC2026-06-302026-08-156,930$4,136None
BARCLAYS PLC2026-06-302026-08-1524,099$14,382None

90-day public filing window, up to 50 source positions.

Kalehua Capital Management LLC ↗MERCER GLOBAL ADVISORS INC /ADV ↗Ensign Peak Advisors, Inc ↗Kalehua Capital Management LLC ↗TORONTO DOMINION BANK ↗ADAR1 Capital Management, LLC ↗DIADEMA PARTNERS LP ↗NFSG Corp ↗XTX Topco Ltd ↗Qube Research & Technologies Ltd ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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