ARM HOLDINGS PLC /UK (ARM) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-06-04

ARM HOLDINGS PLC /UK (ARM) has filed 25 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-04. 6 Form 144 notices of proposed sale were filed for ARM stock. InsiderAlpha tracks every ARM SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About ARM HOLDINGS PLC /UK (ARM)

SEC CIK0001973239

90-Day SEC Filing Activity

Form 4 filings (90d)25
Form 144 notices (90d)6
Latest Form 4 filing2026-06-04

Recent ARM Insider Transactions (Form 4)

DateInsiderRoleTransactionSharesPriceValueFiling
Bartels Laura KathleenChief Accounting OfficerS — Open-market sale11.3K$392.70$4.44MSEC
Abbey WilliamChief Commercial OfficerS — Open-market sale2.6K$383.73$1.01MSEC
Abbey WilliamChief Commercial OfficerS — Open-market sale3.9K$415.52$1.63MSEC
Abbey WilliamChief Commercial OfficerS — Open-market sale4.2K$343.81$1.44MSEC
Abbey WilliamChief Commercial OfficerS — Open-market sale2.3K$305.82$703KSEC
Abbey WilliamChief Commercial OfficerS — Open-market sale4.7K$287.03$1.34MSEC
Eaton Charlotte ClaireChief People OfficerS — Open-market sale5.0K$291.08$1.46MSEC
Eaton Charlotte ClaireChief People OfficerS — Open-market sale2.8K$288.10$808KSEC
Eaton Charlotte ClaireChief People OfficerS — Open-market sale4.0K$282.77$1.13MSEC
Child JasonChief Financial OfficerS — Open-market sale31.9K$226.54$7.23MSEC
Abbey WilliamChief Commercial OfficerS — Open-market sale5.1K$257.18$1.30MSEC
Eaton Charlotte ClaireChief People OfficerS — Open-market sale3.1K$252.25$782KSEC
Collins SpencerChief Legal OfficerS — Open-market sale40.9K$215.00$8.80MSEC
Abbey WilliamChief Commercial OfficerS — Open-market sale10.9K$224.14$2.44MSEC
Grisenthwaite Richard RoyChief ArchitectS — Open-market sale24.3K$209.15$5.09MSEC

All transactions sourced from SEC EDGAR Form 4 filings for ARM HOLDINGS PLC /UK (ARM). Updated in real time as new filings are submitted to the SEC.

Most-Active ARM Insiders — Last 90 Days

InsiderForm 4 filingsTotal transaction value
Abbey William21$15.23M
Collins Spencer18$27.40M
Grisenthwaite Richard Roy15$9.55M
Child Jason11$19.00M
Bartels Laura Kathleen10$5.15M

Recent ARM Form 144 Notices of Proposed Sale

Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.

Recent Insider Filings

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in ARM insider filings:

POpen-market purchase by the insider
SOpen-market sale by the insider
AGrant, award, or other acquisition from the issuer
MExercise or conversion of derivative security (e.g. options)
FPayment of exercise price or tax liability via share withholding
GBona-fide gift of securities
DDisposition to the issuer (e.g. share buyback participation)
JOther acquisition or disposition
XExercise of in-the-money or at-the-money derivative security
CConversion of derivative security
VTransaction voluntarily reported earlier than required

ARM Insider Trading — FAQ

What is the latest insider trade for ARM?
ARM HOLDINGS PLC /UK (ARM) had 25 insider filings in the last 90 days, with the most recent on 2026-06-04. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying ARM stock?
0 insider purchases of ARM were filed in the last 90 days.
How many insiders are selling ARM stock?
0 insider sales of ARM were filed in the last 90 days.
Where can I see ARM SEC filings (Form 4, 10-K, 10-Q, 8-K)?
InsiderAlpha aggregates every ARM SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

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