Arm Holdings plc (ARM) — Insider Trading

Name: Insider Trading Arm Holdings plc (ARM) — September 2026
Creator: WhaleSentiment

Sector: Technology • All Insider Transactions

🔄 Last update: 09/19/2026 at 14:10 UTC

Sales (90d)

$2.7M

1 transactions

Buys (90d)

0 transactions

WhaleSentiment Score ℹ️

⚪ +0

Neutro

Form 144 Filings

Upcoming sale notices

Stock Price ARM 📈

ARM stock price — last 6 months

Last Price

$275.61

18/09/2026 (market close)

Daily Change

+10.71 (+4.04%)

6-Month Performance

+112.3%

$129.82 → $275.61

6M High / 6M Low

$439.46

Min: $129.82

▲ = insider buy (0), ▼ = insider sell (40)

Data from Yahoo Finance, 15-min delay. Last update: 18/09/2026 (market close).

All Insider Transactions ARM — 2026

Insider Transactions

Date	Insider	Role	Type	Shares	Price	Value
09/14/2026	Abbey William	Chief Commercial Officer	Award	17,288	—	—
09/09/2026	Haas Rene A.	Chief Executive Officer	Award	425,000	—	—
08/31/2026	Haas Rene A.	Chief Executive Officer	Award	64	$108.33	$0.007M
08/27/2026	Child Jason	Chief Financial Officer	Sale	10,400	$255.33	$2.7M
08/17/2026	Bartels Laura Kathleen	Chief Accounting Officer	Exercise	862	—	—
08/17/2026	Bartels Laura Kathleen	Chief Accounting Officer	Exercise	819	—	—
08/17/2026	Bartels Laura Kathleen	Chief Accounting Officer	Tax	856	$271.43	$0.2M
08/17/2026	Bartels Laura Kathleen	Chief Accounting Officer	Exercise	862	—	—
08/17/2026	Bartels Laura Kathleen	Chief Accounting Officer	Exercise	819	—	—
08/07/2026	Sine Jeffrey	Director	Gift	9,572	—	—

Holdings Summary

Insider	Role	Shares Held	Last Transaction
Haas Rene A.	Chief Executive Officer	425,000	09/09/2026
Child Jason	Chief Financial Officer	163,832	08/27/2026
Abbey William	Chief Commercial Officer	65,270	09/14/2026
Bartels Laura Kathleen	Chief Accounting Officer	12,997	08/17/2026

⚠️ Form 144 — Upcoming Sale Notices

Form 144 is filed BEFORE the actual sale. It is an important leading indicator.

Filing Date	Type	SEC Link
08/27/2026	144	View Filing →

What is Insider Trading on Arm Holdings plc?

Legal insider trading occurs when executives, directors, and major shareholders (>10%) of a public company buy or sell shares of their own company and report it to the SEC via Form 4.

How to Read the Data

Open market purchases (P) — the strongest signal. The insider uses their own money to buy shares.

Signals to Watch for ARM

Cluster buying: multiple Arm Holdings plc insiders buying in the same week → very bullish signal
Excessive selling: selling volume above historical average → possible concern signal
Form 144: filing of a sale notice → imminent sale in the coming days/weeks
10b5-1 Plan: pre-programmed sales are less significant than discretionary sales

Sources & References

All data on this page comes directly from public SEC filings.

📋 View all Form 4 filings on SEC EDGAR ARM →

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⚠️ Disclaimer: WhaleSentiment provides public SEC data for informational and educational purposes only. It does not provide financial advice, investment recommendations, or solicitation to buy/sell financial instruments. Always consult a qualified financial advisor before making investment decisions.