BetaInsiders sold $72.2M in the past 12 months.40% was sold under disclosed trading plans, 60% with no plan disclosed. The largest seller, Jason Child (Chief Financial Officer), sold $20.0M.Share-of-stake figures for this company are being verified and will be added when that check is finished. Why
A share of stake is shown for 0 of the 7 officers and directors who sold. 14 are left out Disclosed company stock is not an insider's whole wealth.i
Left out: Rene Haas, Jason Child, Spencer Collins, William Abbey, Ronald Fisher, Laura Bartels, Karen Dykstra, Charlotte Eaton, Jeffrey Sine, Rosemary Schooler, Paul Jacobs, Young Sohn, Richard Grisenthwaite and Son Masayoshi (share of stake is being verified).
Officers and directors, past 12 months. Their share of stake is being verified and is not shown yet; amounts and trading plans are below.
Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.
| Who | Shares | Price | % of total stake | Total stake after | Trade date | Filed |
|---|---|---|---|---|---|---|
| Jason Child Chief Financial Officer | 10,400 | $300.00 | n/a | n/a | Sep 21, 2026 | Sep 23, 2026 |
"% of total stake" is the shares in an event against all the vested shares the person held that day, across every share class and holding entity, after that day's vesting. "n/a" means the person's holdings are not confirmed, or the row is a purchase. "Holdings record incomplete" means more shares were sold than the filings show the person held that day, so a percentage would be wrong.
SOFTBANK GROUP CORP. reported no open-market sales in the past 12 months. Large shareholders and the funds or companies that board members represent are not part of management, so they are left out of the figures above.
Yes. Rene Haas sold 41K shares ($6.6M) in the past 12 months, all of it under a trading plan disclosed in the filings.
Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 40% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 60% had no disclosed plan. A trading plan schedules sales in advance.
No. Officers and directors reported no purchases in the past 12 months.
| Who sold | Amount | % of holdings | Trading plan |
|---|---|---|---|
| Jason Child Chief Financial Officer | $20.0M 95K shares | Not confirmedshare of stake is being verified. Why | Disclosed plan |
| Spencer Collins Chief Legal Officer | $19.8M 93K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| William Abbey Chief Commercial Officer | $12.0M 44K shares | Not confirmedshare of stake is being verified. Why | 18% under a disclosed plan 82% no plan disclosed |
| Rene Haas Chief Executive Officer, Director | $6.6M 41K shares | Not confirmedshare of stake is being verified. Why | Disclosed plan |
| Richard Grisenthwaite Chief Architect | $5.1M 24K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Laura Bartels Chief Accounting Officer | $4.4M 11K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Charlotte Eaton Chief People Officer | $4.2M 15K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
Outside holder, reported separately: SOFTBANK GROUP CORP. (a 10% owner, not part of management). No open-market sales reported in the period. Latest filing
Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.
| Insider | Held Oct 13, 2025 | Sold | Held Oct 13, 2026 | Still held |
|---|---|---|---|---|
Rene Haas!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Rene Haas are complete. Chief Executive Officer, Director | n/a | −41K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Rene HaasHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Rene Haas are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −143Kwithheld by the company for taxes | ||||
Jason Child!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Jason Child are complete. Chief Financial Officer | n/a | −95K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Jason ChildHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Jason Child are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −38Kwithheld by the company for taxes | ||||
Spencer Collins!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Spencer Collins are complete. Chief Legal Officer | n/a | −93K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Spencer CollinsHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Spencer Collins are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −36Kwithheld by the company for taxes | ||||
William Abbey!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for William Abbey are complete. Chief Commercial Officer | n/a | −44K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for William AbbeyHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for William Abbey are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −15Kwithheld by the company for taxes | ||||
Ronald Fisher!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Ronald Fisher are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Ronald FisherHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Ronald Fisher are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Laura Bartels!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Laura Bartels are complete. Chief Accounting Officer | n/a | −11K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Laura BartelsHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Laura Bartels are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −4.2Kwithheld by the company for taxes | ||||
Karen Dykstra!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Karen Dykstra are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Karen DykstraHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Karen Dykstra are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Charlotte Eaton!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Charlotte Eaton are complete. Chief People Officer | n/a | −15K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Charlotte EatonHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Charlotte Eaton are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −3.7Kwithheld by the company for taxes | ||||
Jeffrey Sine!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Jeffrey Sine are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Jeffrey SineHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Jeffrey Sine are complete; balances and unit counts will be added when the check is finished. −9.6Kgifted (net of own trusts) | ||||
Rosemary Schooler!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Rosemary Schooler are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Rosemary SchoolerHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Rosemary Schooler are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Paul Jacobs!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Paul Jacobs are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Paul JacobsHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Paul Jacobs are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Young Sohn!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Young Sohn are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Young SohnHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Young Sohn are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −429withheld by the company for taxes | ||||
Richard Grisenthwaite!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Richard Grisenthwaite are complete. Chief Architect | n/a | −24K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Richard GrisenthwaiteHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Richard Grisenthwaite are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −21Kwithheld by the company for taxes | ||||
Son Masayoshi!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Son Masayoshi are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Son MasayoshiHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Son Masayoshi are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Holdings and share of stake for Arm Holdings Plc are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.
Officer and director open-market sales: $72.2M across 323,715 shares. Plan status and stated purpose are separate questions, and a sale can have both.
The lighter segment is sales with no plan disclosed in the filing ($43.4M), including tax-related sales outside a plan.
Sales with no 10b5-1 plan and no tax reference in the filing. $19.8M of it is Spencer Collins. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: Spencer Collins, May 19, 2026
262,534 shares ($55.0M) were withheld by the company for taxes, which isn't a market sale.
Gifts the filings describe as charitable. Gifts are not sales and are not included in the sale totals.
| Seller | Shares sold | Proceeds | Under a disclosed plan | Share of total | Sales dates |
|---|---|---|---|---|---|
| Jason Child Chief Financial Officer | 95K | $20.0M | 100% | 28% | Mar 25, 2026 to Sep 21, 2026 |
| Spencer Collins Chief Legal Officer | 93K | $19.8M | 0% | 27% | May 11, 2026 to May 19, 2026 |
| William Abbey Chief Commercial Officer | 44K | $12.0M | 18% | 17% | Apr 23, 2026 to Jun 1, 2026 |
| Rene Haas Chief Executive Officer, Director | 41K | $6.6M | 100% | 9% | Mar 25, 2026 to Apr 14, 2026 |
| Richard Grisenthwaite Chief Architect | 24K | $5.1M | 0% | 7% | May 18, 2026 to May 18, 2026 |
| Laura Bartels Chief Accounting Officer | 11K | $4.4M | 0% | 6% | Jun 2, 2026 to Jun 2, 2026 |
| Charlotte Eaton Chief People Officer | 15K | $4.2M | 0% | 6% | May 20, 2026 to May 21, 2026 |
| Month | Sale proceeds | Disclosed plan | To cover taxes | No plan disclosed |
|---|---|---|---|---|
| Oct 2025 | $0 | $0 | $0 | $0 |
| Nov 2025 | $0 | $0 | $0 | $0 |
| Dec 2025 | $0 | $0 | $0 | $0 |
| Jan 2026 | $0 | $0 | $0 | $0 |
| Feb 2026 | $0 | $0 | $0 | $0 |
| Mar 2026 | $8.3M | $8.3M | $0 | $0 |
| Apr 2026 | $6.0M | $6.0M | $0 | $0 |
| May 2026 | $45.0M | $8.7M | $0 | $36.3M |
| Jun 2026 | $7.1M | $0 | $0 | $7.1M |
| Jul 2026 | $0 | $0 | $0 | $0 |
| Aug 2026 | $2.7M | $2.7M | $0 | $0 |
| Sep 2026 | $3.1M | $3.1M | $0 | $0 |
| Oct 2026 | $0 | $0 | $0 | $0 |
Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Arm Holdings Plc are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.
External context: we only cite outside events when a documented connection exists. None is shown for this period.
All 49 Forms 3, 4 and 5 on record for Arm Holdings Plc (SEC CIK 1973239), filed from Mar 18, 2026 to Sep 23, 2026; 49 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 13, 2026. Prices are the ones reported in each filing, often weighted averages.
Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.
Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".
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