ARM · Insider Trading

Arm Holdings plc American Depositary Shares

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Every open-market purchase and sale reported by ARM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings

most recent

Open-Market Buys

code P

Sales

code S

Reporting Insiders

current holders

ARM — Recent Form 4 Transactions (latest 2026-09-23)

Filed	Insider	Role	Type	Shares	Value
2026-09-23	Jason Child	Chief Financial Officer	Sell	−10,400	−$3.12M
2026-09-16	William Abbey	Chief Commercial Officer	A	+17,288 deriv.	—
2026-09-10	Rene A. Haas	Chief Executive Officer	A	+64	+$6.93K
2026-08-31	Jason Child	Chief Financial Officer	Sell	−10,400	−$2.66M
2026-08-18	Laura Kathleen Bartels	Chief Accounting Officer	MIXED	+825	−$232.34K
2026-08-11	Jeffrey Sine	Director	G	−9,572	—
2026-06-04	Laura Kathleen Bartels	Chief Accounting Officer	Sell	−11,306	−$4.44M
2026-06-03	William Abbey	Chief Commercial Officer	Sell	−6,566	−$2.64M
2026-06-01	William Abbey	Chief Commercial Officer	Sell	−4,200	−$1.44M
2026-05-26	William Abbey	Chief Commercial Officer	Sell	−2,300	−$703.39K
2026-05-22	Charlotte Claire Eaton	Chief People Officer	Sell	−7,805	−$2.26M
2026-05-22	William Abbey	Chief Commercial Officer	Sell	−4,655	−$1.34M
2026-05-21	Jason Child	Chief Financial Officer	Sell	−31,920	−$7.23M
2026-05-21	William Abbey	Chief Commercial Officer	Sell	−15,956	−$3.74M
2026-05-21	Charlotte Claire Eaton	Chief People Officer	Sell	−7,100	−$1.91M
2026-05-21	Spencer Collins	Chief Legal Officer	Sell	−40,941	−$8.80M
2026-05-19	Ronald D Fisher	Director	A	+1,531 deriv.	—
2026-05-19	Charlotte Claire Eaton	Chief People Officer	MIXED	+4,140	−$768.04K
2026-05-19	Karen E Dykstra	Director	A	+1,531 deriv.	—
2026-05-19	Rosemary Schooler	Director	M	+2,141	—
2026-05-19	Jeffrey Sine	Director	M	+2,141	—
2026-05-19	Rene A. Haas	Chief Executive Officer	MIXED	+122,327	−$29.98M
2026-05-19	Spencer Collins	Chief Legal Officer	MIXED	+40,941	−$7.59M
2026-05-19	Young Sohn	Director	MIXED	+1,712	−$89.73K
2026-05-19	Paul E Jacobs	Director	M	+2,141	—
2026-05-19	Jason Child	Chief Financial Officer	MIXED	+52,726	−$7.94M
2026-05-19	William Abbey	Chief Commercial Officer	MIXED	+6,039	−$5.36M
2026-05-19	Laura Kathleen Bartels	Chief Accounting Officer	MIXED	+3,375	−$707.59K
2026-05-19	Richard Roy Grisenthwaite	Chief Architect	MIXED	−326	−$9.55M
2026-05-13	Spencer Collins	Chief Legal Officer	Sell	−51,961	−$11.00M
2026-04-23	Jason Child	Chief Financial Officer	Sell	−21,280	−$3.83M
2026-04-16	Rene A. Haas	Chief Executive Officer	Sell	−9,299	−$1.50M
2026-03-27	Rene A. Haas	Chief Executive Officer	Sell	−31,853	−$5.13M
2026-03-27	Jason Child	Chief Financial Officer	Sell	−21,280	−$3.16M
2011-02-16	James E Marley	Director	M	+4,500	—
2011-02-16	Joseph B Anderson Jr	Director	M	+4,500	—
2011-02-16	David W Devonshire	Director	M	+4,500	—
2011-02-16	Steven G Rothmeier	Director	M	+4,500	—
2011-02-16	Victoria B Jackson	Director	M	+4,500	—
2011-02-16	Rhonda L Brooks	Director	M	+4,500	—
2011-02-16	William R Newlin	Director	M	+4,500	—
2011-02-09	Joseph B Anderson Jr	Director	MIXED	—	−$5.01K
2011-02-08	William R Newlin	Director	Buy	+5,115	+$99.52K
2011-02-01	Mary A Lehmann	Sr. VP, treasurer	Sell	−10,000	−$218.51K
2011-01-20	Victoria B Jackson	Director	A	+3,868	—
2011-01-20	Charles G McClure	Chairman, CEO and President	A	+79,960	—
2011-01-20	Larry Ott	Senior VP, Human Resources	A	+27,984	—
2011-01-20	David W Devonshire	Director	A	+3,868	—
2011-01-20	Carsten J Reinhardt	SVP and Chief Operating Office	A	+31,980	—
2011-01-20	Barbara Griffin Novak	VP&Corporate Secretary	A	+5,330	—

ARM — Current Insider Holders

Insider	Role	Shares Held	Value
Rene A. Haas	Chief Executive Officer	396,071	$90.22M
Jason Child	Chief Financial Officer	153,442	$34.95M
William Abbey	Chief Commercial Officer	24,485	$5.58M
Laura Kathleen Bartels	Chief Accounting Officer	12,997	$2.96M
Rosemary Schooler	Director	9,572	$2.18M
Paul E Jacobs	Director	7,442	$1.70M
Richard Roy Grisenthwaite	Chief Architect	5,543	$1.26M
Charlotte Claire Eaton	Chief People Officer	5,000	$1.14M
Young Sohn	Director	2,396	$545.81K

ARM Insider Trading FAQ

Who are the insiders at ARM?

9 officers, directors and 10%+ beneficial owners currently report holdings in ARM via SEC Form 4.

Are ARM insiders buying or selling?

Across the 50 most recent Form 4 filings for ARM, 1 were open-market purchases (code P) and 18 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.

How current is ARM insider data?

Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent ARM filing is dated 2026-09-23.

How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the ARM quote page; the site-wide leaderboard is on the insider transactions hub.