Public ownership evidence

Arm Holdings plc American Depositary Shares (ARM) Ownership Disclosures

Read ARM 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

Arm Holdings plc American Depositary Shares: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-09-23
Trade date
2026-09-21
Reporting owners
Child Jason
Code
S
Shares
10,400
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 0001973239-26-000136
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 ARM fundamentals

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

Read ARM 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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2026-09-232026-09-21Child JasonS10,400Not reported
2026-09-162026-09-14Abbey WilliamA17,288Not reported
2026-09-102026-09-09Haas Rene A.A425,000Not reported
2026-09-102026-08-31Haas Rene A.A64Not reported
2026-09-012026-08-27Child JasonS10,400Not 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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B. Riley Wealth Advisors, Inc.2025-03-312026-08-29100$10,679Call
B. Riley Wealth Advisors, Inc.2025-03-312026-08-2911,202$1,196,214None
Deeter Investments LLP2025-12-312026-08-2920,000$2,186,200None
Corient Private Wealth LP2026-06-302026-08-286,497$2,303,580None
Advisors Asset Management, Inc.2025-03-312026-08-274,521$482,798None
Advisors Asset Management, Inc.2025-09-302026-08-274,507$637,695None
WILLIAM JOHN SEMPOLINSKI2026-03-312026-08-271,802$272,607None
Groupe la Francaise2026-06-302026-08-2627,195$9,650,972None
Groupe la Francaise2026-06-302026-08-26925$322,303None
Advisors Asset Management, Inc.2025-06-302026-08-255,037$814,684None
Advisors Asset Management, Inc.2024-09-302026-08-222,652$379,263None
Advisors Asset Management, Inc.2024-06-302026-08-221,073$175,564None
Advisors Asset Management, Inc.2024-12-312026-08-223,884$479,130None
Advisors Asset Management, Inc.2025-12-312026-08-223,773$412,427None
Forefront Wealth Partners, LLC2026-06-302026-08-21846$299,965None
Harvest Fund Management Co., Ltd2026-06-302026-08-2151,512$18,258,000None
GILL CAPITAL PARTNERS, LLC2026-06-302026-08-2111$3,900None
Bullock Wealth Management Group2026-06-302026-08-2053$17,886None
Kingsview Wealth Management, LLC2026-06-302026-08-204,809$1,705,127None
Archer Investment Corp2026-06-302026-08-2030$10,637None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-207,205$2,554,758None
Beacon Pointe Advisors, LLC2026-06-302026-08-196,085$2,157,559None
Copia Wealth Management2026-06-302026-08-194$1,418None
JDM Financial Group LLC2026-06-302026-08-1934$12,055None
Orion Capital Management LLC2026-06-302026-08-19225$79,778None
Ratan Capital Management LP2026-06-302026-08-1943,515$15,429,114None
Liontrust Investment Partners LLP2026-06-302026-08-19102,359$36,293,431None
Ensign Peak Advisors, Inc2025-09-302026-08-1988,954$12,586,101None
PIN OAK INVESTMENT ADVISORS INC2026-06-302026-08-1910$4,000None
Jacobs Equity LLC2026-06-302026-08-18700$248,199None
Strive Financial Group ,LLC2026-06-302026-08-1812$4,255None
Caitlin John, LLC2026-06-302026-08-1810$3,546None
Caitlin John, LLC2026-06-302026-08-181,100$390,027None
Corient Private Wealth LP2026-06-302026-08-187,167$2,541,143None
Empowered Funds, LLC2026-06-302026-08-185,870$2,081,326None
Camarda Financial Advisors, LLC2026-06-302026-08-1818,316$6,494,304None
Transamerica Financial Advisors, LLC2026-06-302026-08-18326$115,589None
UNITED CAPITAL FINANCIAL ADVISORS, LLC2026-06-302026-08-181,052$373,008None
CAPSTONE INVESTMENT ADVISORS, LLC2026-06-302026-08-182,700$957,339Put
CAPSTONE INVESTMENT ADVISORS, LLC2026-06-302026-08-1810,492$3,720,148None
Equitable Holdings, Inc.2026-06-302026-08-1820,784$7,369,383None
Stonehage Fleming Financial Services Holdings Ltd2026-06-302026-08-181,000$354,570None
Pacific Heights Asset Management LLC2026-06-302026-08-18325,000$115,235,250None
Jefferies Financial Group Inc.2026-06-302026-08-18950$336,842None
FORMULA GROWTH LTD2026-06-302026-08-181,600$567,312None
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO2026-06-302026-08-18107,962$38,280,086None
CENTAURUS FINANCIAL, INC.2026-06-302026-08-1811,627$4,123,000None
Thompson David Blair2026-06-302026-08-151,934$685,738None
Forum Finance Group S.A.2026-06-302026-08-15430$123,000None
MCGUIRE CAPITAL ADVISORS INC2026-06-302026-08-15270$95,734None

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

B. Riley Wealth Advisors, Inc. ↗B. Riley Wealth Advisors, Inc. ↗Deeter Investments LLP ↗Corient Private Wealth LP ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗WILLIAM JOHN SEMPOLINSKI ↗Groupe la Francaise ↗Groupe la Francaise ↗Advisors Asset Management, Inc. ↗

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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