Arm Holdings plc American Depositary Shares (ARM) · Insider trading

What Arm Holdings's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months

0 insiders, 0 trades

Sold, 12 months

$72.16M

7 insiders, 40% under a plan

Net, 12 months

−$72.16M

bought less sold

Latest filing

2026-09-23

filings read to 2026-10-19

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

Bought Sold Largest month: $45.02M

Who traded, two years

Insider	Bought	Sold	Trades	Last trade	Holds after
Child JasonChief Financial Officer	–	$19.99M	5	2026-09-21	153,442
Collins SpencerChief Legal Officer	–	$19.80M	9	2026-05-19	0
Abbey WilliamChief Commercial Officer	–	$12.02M	10	2026-06-01	24,485
Haas Rene A.Director, Chief Executive Officer	–	$6.63M	11	2026-04-14	277,333
Grisenthwaite Richard RoyChief Architect	–	$5.09M	1	2026-05-18	0
Bartels Laura KathleenChief Accounting Officer	–	$4.44M	1	2026-06-02	12,135
Eaton Charlotte ClaireChief People Officer	–	$4.18M	4	2026-05-21	5,000

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

Date	Insider	Trade	Shares	Price	Value	Holds after	Filing
2026-09-21	Child JasonChief Financial Officer	Saleplan	10,400	300.00	$3.12M	153,442	Form 4
2026-08-27	Child JasonChief Financial Officer	Saleplan	10,400	255.33	$2.66M	163,832	Form 4
2026-06-02	Bartels Laura KathleenChief Accounting Officer	Sale	11,306	392.70	$4.44M	12,135	Form 4
2026-06-01	Abbey WilliamChief Commercial Officer	Sale	2,644	383.73	$1.01M	24,485	Form 4
2026-06-01	Abbey WilliamChief Commercial Officer	Sale	3,922	415.52	$1.63M	20,563	Form 4
2026-05-28	Abbey WilliamChief Commercial Officer	Sale	4,200	343.81	$1.44M	27,129	Form 4
2026-05-22	Abbey WilliamChief Commercial Officer	Sale	2,300	305.82	$703,386	31,329	Form 4
2026-05-21	Eaton Charlotte ClaireChief People Officer	Sale	2,805	288.10	$808,121	5,000	Form 4
2026-05-21	Eaton Charlotte ClaireChief People Officer	Sale	5,000	291.08	$1.46M	0	Form 4
2026-05-21	Abbey WilliamChief Commercial Officer	Sale	4,655	287.03	$1.34M	33,629	Form 4
2026-05-21	Eaton Charlotte ClaireChief People Officer	Sale	4,000	282.77	$1.13M	7,805	Form 4
2026-05-20	Child JasonChief Financial Officer	Saleplan	31,920	226.54	$7.23M	174,232	Form 4
2026-05-20	Eaton Charlotte ClaireChief People Officer	Sale	3,100	252.25	$781,975	11,805	Form 4
2026-05-20	Abbey WilliamChief Commercial Officer	Sale	5,069	257.18	$1.30M	38,284	Form 4
2026-05-19	Abbey WilliamChief Commercial Officer	Sale	10,887	224.14	$2.44M	43,353	Form 4
2026-05-19	Collins SpencerChief Legal Officer	Sale	40,941	215.00	$8.80M	0	Form 4
2026-05-18	Grisenthwaite Richard RoyChief Architect	Sale	24,339	209.15	$5.09M	0	Form 4
2026-05-15	Abbey WilliamChief Commercial Officer	Saleplan	7,000	212.55	$1.49M	57,394	Form 4
2026-05-11	Collins SpencerChief Legal Officer	Sale	836	207.77	$173,696	51,125	Form 4
2026-05-11	Collins SpencerChief Legal Officer	Sale	1,849	208.68	$385,849	49,276	Form 4
2026-05-11	Collins SpencerChief Legal Officer	Sale	5,353	209.52	$1.12M	43,923	Form 4
2026-05-11	Collins SpencerChief Legal Officer	Sale	9,815	210.53	$2.07M	34,108	Form 4
2026-05-11	Collins SpencerChief Legal Officer	Sale	10,674	211.46	$2.26M	23,434	Form 4
2026-05-11	Collins SpencerChief Legal Officer	Sale	11,197	212.51	$2.38M	12,237	Form 4
2026-05-11	Collins SpencerChief Legal Officer	Sale	7,371	213.59	$1.57M	4,866	Form 4
2026-05-11	Collins SpencerChief Legal Officer	Sale	4,866	214.41	$1.04M	0	Form 4
2026-04-24	Abbey WilliamChief Commercial Officer	Saleplan	1,577	221.99	$350,078	55,817	Form 4
2026-04-23	Abbey WilliamChief Commercial Officer	Saleplan	1,577	199.00	$313,823	54,240	Form 4
2026-04-22	Child JasonChief Financial Officer	Saleplan	21,280	180.00	$3.83M	153,426	Form 4
2026-04-14	Haas Rene A.Director, Chief Executive Officer	Saleplan	5,646	160.57	$906,578	277,333	Form 4
2026-04-14	Haas Rene A.Director, Chief Executive Officer	Saleplan	3,483	161.21	$561,494	273,850	Form 4
2026-04-14	Haas Rene A.Director, Chief Executive Officer	Saleplan	170	163.00	$27,710	273,680	Form 4
2026-03-26	Haas Rene A.Director, Chief Executive Officer	Saleplan	200	163.15	$32,630	290,765	Form 4
2026-03-26	Haas Rene A.Director, Chief Executive Officer	Saleplan	600	162.19	$97,314	290,165	Form 4
2026-03-26	Haas Rene A.Director, Chief Executive Officer	Saleplan	1,842	161.47	$297,428	288,323	Form 4
2026-03-26	Haas Rene A.Director, Chief Executive Officer	Saleplan	5,344	160.41	$857,231	282,979	Form 4
2026-03-25	Child JasonChief Financial Officer	Saleplan	21,280	148.37	$3.16M	174,706	Form 4
2026-03-25	Haas Rene A.Director, Chief Executive Officer	Saleplan	1,092	163.35	$178,378	313,740	Form 4
2026-03-25	Haas Rene A.Director, Chief Executive Officer	Saleplan	4,830	162.62	$785,455	308,910	Form 4
2026-03-25	Haas Rene A.Director, Chief Executive Officer	Saleplan	6,196	161.47	$1.00M	302,714	Form 4

1 more

2026-03-25

Haas Rene A.Director, Chief Executive Officer

Saleplan

11,749

160.22

$1.88M

290,965

Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

21 × option exercise17 × grant or award9 × shares withheld for tax1 × gift

Show them

Date	Insider	What	Shares	Price	Holds after	Filing
2026-08-31	Haas Rene A.Director, Chief Executive Officer	Grant or award A	+64	108.33	338,666	Form 4
2026-08-17	Bartels Laura KathleenChief Accounting Officer	Option exercise M	+862	–	12,997	Form 4
2026-08-17	Bartels Laura KathleenChief Accounting Officer	Option exercise M	+819	–	13,816	Form 4
2026-08-17	Bartels Laura KathleenChief Accounting Officer	Shares withheld for tax F	−856	271.43	12,960	Form 4
2026-08-07	Sine JeffreyDirector	Gift G	−9,572	–	0	Form 4
2026-05-15	Child JasonChief Financial Officer	Grant or award A	+11,909	–	165,335	Form 4
2026-05-15	Child JasonChief Financial Officer	Option exercise M	+4,670	–	170,005	Form 4
2026-05-15	Child JasonChief Financial Officer	Grant or award A	+11,849	–	181,854	Form 4
2026-05-15	Child JasonChief Financial Officer	Option exercise M	+4,647	–	186,501	Form 4
2026-05-15	Child JasonChief Financial Officer	Grant or award A	+57,601	–	244,102	Form 4
2026-05-15	Child JasonChief Financial Officer	Shares withheld for tax F	−37,950	209.16	206,152	Form 4
2026-05-15	Sohn YoungDirector	Option exercise M	+2,141	–	2,825	Form 4
2026-05-15	Sohn YoungDirector	Shares withheld for tax F	−429	209.16	2,396	Form 4
2026-05-15	Sine JeffreyDirector	Option exercise M	+2,141	–	9,572	Form 4
2026-05-15	Jacobs Paul eDirector	Option exercise M	+2,141	–	7,442	Form 4
2026-05-15	Schooler RosemaryDirector	Option exercise M	+2,141	–	9,572	Form 4
2026-05-15	Haas Rene A.Director, Chief Executive Officer	Grant or award A	+51,952	–	325,632	Form 4
2026-05-15	Haas Rene A.Director, Chief Executive Officer	Grant or award A	+51,691	–	377,323	Form 4
2026-05-15	Haas Rene A.Director, Chief Executive Officer	Grant or award A	+162,000	–	539,323	Form 4
2026-05-15	Haas Rene A.Director, Chief Executive Officer	Shares withheld for tax F	−143,316	209.16	396,007	Form 4
2026-05-15	Eaton Charlotte ClaireChief People Officer	Grant or award A	+5,612	–	16,377	Form 4
2026-05-15	Eaton Charlotte ClaireChief People Officer	Option exercise M	+2,200	–	18,577	Form 4
2026-05-15	Eaton Charlotte ClaireChief People Officer	Shares withheld for tax F	−3,672	209.16	14,905	Form 4
2026-05-15	Collins SpencerChief Legal Officer	Grant or award A	+10,668	–	10,668	Form 4
2026-05-15	Collins SpencerChief Legal Officer	Option exercise M	+4,184	–	14,852	Form 4
2026-05-15	Collins SpencerChief Legal Officer	Option exercise M	+3,950	–	18,802	Form 4
2026-05-15	Collins SpencerChief Legal Officer	Grant or award A	+10,071	–	28,873	Form 4
2026-05-15	Collins SpencerChief Legal Officer	Grant or award A	+48,378	–	77,251	Form 4
2026-05-15	Collins SpencerChief Legal Officer	Shares withheld for tax F	−36,310	209.16	40,941	Form 4
2026-05-15	Grisenthwaite Richard RoyChief Architect	Grant or award A	+5,217	–	5,543	Form 4
2026-05-15	Grisenthwaite Richard RoyChief Architect	Option exercise M	+2,046	–	7,589	Form 4
2026-05-15	Grisenthwaite Richard RoyChief Architect	Option exercise M	+14,595	–	22,184	Form 4
2026-05-15	Grisenthwaite Richard RoyChief Architect	Grant or award A	+4,158	–	26,342	Form 4
2026-05-15	Grisenthwaite Richard RoyChief Architect	Option exercise M	+1,631	–	27,973	Form 4
2026-05-15	Grisenthwaite Richard RoyChief Architect	Grant or award A	+13,315	–	41,288	Form 4
2026-05-15	Grisenthwaite Richard RoyChief Architect	Option exercise M	+4,352	–	45,640	Form 4
2026-05-15	Grisenthwaite Richard RoyChief Architect	Shares withheld for tax F	−21,301	209.16	24,339	Form 4
2026-05-15	Abbey WilliamChief Commercial Officer	Grant or award A	+4,466	–	52,667	Form 4
2026-05-15	Abbey WilliamChief Commercial Officer	Option exercise M	+1,751	–	54,418	Form 4
2026-05-15	Abbey WilliamChief Commercial Officer	Grant or award A	+4,444	–	58,862	Form 4
2026-05-15	Abbey WilliamChief Commercial Officer	Option exercise M	+1,743	–	60,605	Form 4
2026-05-15	Abbey WilliamChief Commercial Officer	Grant or award A	+14,400	–	75,005	Form 4
2026-05-15	Abbey WilliamChief Commercial Officer	Option exercise M	+4,706	–	79,711	Form 4
2026-05-15	Abbey WilliamChief Commercial Officer	Shares withheld for tax F	−15,317	209.16	64,394	Form 4
2026-05-15	Bartels Laura KathleenChief Accounting Officer	Option exercise M	+3,588	–	23,654	Form 4
2026-05-15	Bartels Laura KathleenChief Accounting Officer	Option exercise M	+862	–	24,516	Form 4
2026-05-15	Bartels Laura KathleenChief Accounting Officer	Option exercise M	+2,308	–	26,824	Form 4
2026-05-15	Bartels Laura KathleenChief Accounting Officer	Shares withheld for tax F	−3,383	209.16	23,441	Form 4

How to read it

Buy, sale: Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan: A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after: The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value: Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

Arm Holdings's scores and multiples ›