ARM
ARM HOLDINGS PLC /UK · Technology · Market cap $244.3B
Insiders sold $5.8M net in the last 90 days ·1 seller, 0 buyers· 2 of 2 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 23, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$72.2M
reported sales (SEC code S)
Unique Insiders
7
in the rolling window
Latest filing
Sep 23, 2026
Child Jason
ARM HOLDINGS PLC /UK (ARM) has 31 SEC Form 4 filings (89 transaction rows) in the rolling window, disclosed by 7 distinct insiders. Most recent filing: Sep 23, 2026.
Inside the rolling window, 7 insiders at ARM HOLDINGS PLC /UK reported no open-market purchases and 23 open-market sales totaling $72.2M. The most active filer is Chief Commercial Officer Abbey William with 9 filings. Insiders have net sold $72.2M over the trailing 6 months. The most recent open-market filing is a sale of 10,400 shares by Chief Financial Officer Child Jason, dated Sep 21, 2026, worth $3.1M.
- Industry:Semiconductors
- CEO:Rene Anthony Andrada Haas
- Employees:9,584
- HQ:Cambridge, CA, GB
- IPO:2023-09-14
| Source | |||||||
|---|---|---|---|---|---|---|---|
| Chief Financial Officer | Sale | 10,400 | $3.1M | Sep 23 | -31.9% | SEC ↗ | |
Child JasonFirst in 3 months | Chief Financial Officer | Sale | 10,400 | $2.7M | Aug 31 | -6.3% | SEC ↗ |
Bartels Laura KathleenFirst filing | Chief Accounting Officer | Sale | 11,306 | $4.4M | Jun 4 | -42.4% | SEC ↗ |
| Chief Commercial Officer | Sale | 6,566 | $2.6M | Jun 3 | -45.0% | SEC ↗ | |
| Chief Commercial Officer | Sale | 4,200 | $1.4M | Jun 1 | -44.6% | SEC ↗ | |
| Chief Commercial Officer | Sale | 2,300 | $703K | May 26 | -29.5% | SEC ↗ | |
| Chief People Officer | Sale | 11,805 | $3.4M | May 22 | -26.1% | SEC ↗ | |
| Chief Commercial Officer | Sale | 4,655 | $1.3M | May 22 | -26.1% | SEC ↗ | |
| Chief Commercial Officer | Sale | 10,887 | $2.4M | May 21 | — | SEC ↗ | |
| Chief Commercial Officer | Sale | 5,069 | $1.3M | May 21 | — | SEC ↗ | |
Eaton Charlotte ClaireFirst filing | Chief People Officer | Sale | 3,100 | $782K | May 21 | — | SEC ↗ |
| Chief Legal Officer | Sale | 40,941 | $8.8M | May 21 | — | SEC ↗ | |
| Chief Financial Officer | Sale | 31,920 | $7.2M | May 21 | — | SEC ↗ | |
Grisenthwaite Richard RoyFirst filing | Chief Architect | Sale | 24,339 | $5.1M | May 19 | — | SEC ↗ |
Abbey WilliamFirst filing | Chief Commercial Officer | Sale | 7,000 | $1.5M | May 19 | — | SEC ↗ |
Abbey WilliamFirst filing | Chief Commercial Officer | Sale | 1,577 | $350K | May 19 | — | SEC ↗ |
Abbey WilliamFirst filing | Chief Commercial Officer | Sale | 1,577 | $314K | May 19 | — | SEC ↗ |
Collins SpencerFirst filing | Chief Legal Officer | Sale | 51,961 | $11.0M | May 13 | — | SEC ↗ |
| Chief Financial Officer | Sale | 21,280 | $3.8M | Apr 23 | — | SEC ↗ | |
| Chief Executive Officer | Sale | 9,299 | $1.5M | Apr 16 | — | SEC ↗ | |
Haas Rene A.First filing | Chief Executive Officer | Sale | 23,867 | $3.8M | Mar 27 | — | SEC ↗ |
Haas Rene A.First filing | Chief Executive Officer | Sale | 7,986 | $1.3M | Mar 27 | — | SEC ↗ |
Child JasonFirst filing | Chief Financial Officer | Sale | 21,280 | $3.2M | Mar 27 | — | SEC ↗ |
Earnings: last 7 quarters
Congress trading ARM 4 all-time
- DRep. Cleo FieldsSale$50,001 - $100,0002025-12-11
- DRep. Jonathan JacksonSale$1,001 - $15,0002025-09-02
- DRep. Jonathan JacksonPurchase$1,001 - $15,0002025-07-17
- DRep. Cleo FieldsPurchase$50,001 - $100,0002025-07-16
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does ARM have?
ARM HOLDINGS PLC /UK (ARM) has 31 SEC Form 4 filings (89 transaction rows) in the rolling 365-day window, disclosed by 7 distinct insiders. Most recent filing: Sep 23, 2026.
When was the most recent SEC Form 4 filing for ARM?
The most recent Form 4 filing for ARM on Tracefour is dated Sep 23, 2026.
Who is the most active insider at ARM?
The most active SEC Form 4 filer at ARM in the rolling window is Chief Commercial Officer Abbey William, with 9 filings.
What is the net insider flow at ARM over the last 6 months?
Over the trailing 180 days, insiders at ARM have net sold $72.2M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at ARM in the current window?
Inside the rolling window, insiders at ARM bought $0 and sold $72.2M based on SEC Form 4 filings.
Can I get alerts for ARM insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at ARM HOLDINGS PLC /UK (ARM). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
ARM HOLDINGS PLC /UK is in the Technology sector.