ARM HOLDINGS PLC /UK files with the SEC under CIK 0001973239 and is classified as semiconductors and related devices. We track it alongside the rest of the Information Technology sector.
ARM Form 4 activity by transaction type, last 90 days
Form 4 transaction type
Transactions
Shares
Total value
Open-market sale
2
20,800
$5.78M
Grant or award
3
442,352
Option exercise
4
3,362
Tax withholding / forfeiture
1
856
Bona-fide gift
1
9,572
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
ARM insider transactions (Form 4)
113
34 Form 4 filings on record, the earliest from Mar 27, 2026, newest first. Filing history page 1 of 2.
Footnote F2 (shares): This restricted stock unit ("RSU") award was granted on May 13, 2024, 28.5% of which vested on May 15, 2025, with quarterly vesting of 6.5% thereafter, subject to continued service to the Company.
Footnote F3 (price): Each RSU represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
Footnote F4 (shares): This RSU award was granted on May 1, 2025, 28.5% of which vested on May 15, 2026, with quarterly vesting of 6.5% thereafter, subject to continued service to the Company.
Footnote F2 (price): Represents weighted average sales price. The shares were sold at prices ranging from $392.60 to $393.09. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F2 (price): Represents weighted average sales price. The shares were sold at prices ranging from $415.52 to $415.58. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F2 (price): Represents weighted average sales price. The shares were sold at prices ranging from $343.80 to $344.09. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F2 (price): Represents weighted average sales price. The shares were sold at prices ranging from $305.82 to $305.91. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F2 (price): Represents weighted average sales price. The shares were sold at prices ranging from $287.02 to $287.15. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F2 (price): Represents weighted average sales price. The shares were sold at prices ranging from $291.04 to $291.08. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F2 (price): Represents weighted average sales price. The shares were sold at prices ranging from $224.11 to $224.43. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F3 (price): Represents weighted average sales price. The shares were sold at prices ranging from $257.15 to $257.35. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F2 (price): Represents weighted average sales price. The shares were sold at prices ranging from $252.20 to $252.28. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F3 (price): Represents weighted average sales price. The shares were sold at prices ranging from $282.71 to $282.86. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F2 (shares): This restricted stock unit ("RSU") award was granted on May 1, 2025, 28.5% of which vested on May 15, 2026, with quarterly vesting of 6.5% thereafter, subject to continued service to the Company.
Footnote F3 (price): Each RSU represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
Footnote F4 (shares): This RSU award was granted on May 13, 2024, 28.5% of which vested on May 15, 2025, with quarterly vesting of 6.5% thereafter, subject to continued service to the Company.
Footnote F5 (shares): This RSU award was granted on May 22, 2023, 28.5% of which vested on May 15, 2024, with quarterly vesting of 6.5% thereafter. The RSU award was fully vested on May 15, 2026.
Footnote F2 (shares): Represents performance-based restricted stock units granted on May 1, 2025, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee (the "Remuneration Committee") of the Board of Directors of the… Full note on SEC EDGAR
Footnote F3 (price): Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
Footnote F4 (shares): This RSU award was granted on May 1, 2025. 30% of the award vested on May 15, 2026. 30% of the award will vest on May 15, 2027, and the remaining 40% will vest on May 15, 2028, subject to continued service to the Company.
Footnote F5 (shares): Represents performance-based RSUs granted on May 13, 2024, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
Footnote F6 (shares): This RSU award was granted on May 13, 2024, 30% of which vested on each of May 15, 2025 and May 15, 2026. The remaining 40% will vest on May 15, 2027, subject to continued service to the Company.
Footnote F7 (shares): Represents performance-based RSUs granted on May 23, 2023, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
Footnote F8 (shares): This RSU award was granted on May 23, 2023 and vested on May 15, 2026.
Footnote F10 (price): Represents weighted average sales price. The shares were sold at prices ranging from $212.51 to $212.76. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F2 (shares): Represents performance-based restricted stock units granted on May 1, 2025, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee (the "Remuneration Committee") of the Board of Directors of the… Full note on SEC EDGAR
Footnote F3 (price): Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
Footnote F4 (shares): This RSU award was granted on May 1, 2025. 30% of the award vested on May 15, 2026. 30% of the award will vest on May 15, 2027, and the remaining 40% will vest on May 15, 2028, subject to continued service to the Company.
Footnote F5 (shares): Represents performance-based RSUs granted on May 13, 2024, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
Footnote F6 (shares): This RSU award was granted on May 13, 2024, 30% of which vested on each of May 15, 2025 and May 15, 2026. The remaining 40% will vest on May 15, 2027, subject to continued service to the Company.
Footnote F7 (shares): Represents performance-based RSUs granted on May 23, 2023, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
Footnote F8 (shares): This RSU award was granted on May 23, 2023 and vested on May 15, 2026.
Footnote F10 (price): Represents weighted average sales price. The shares were sold at prices ranging from $209.03 to $209.66. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F2 (shares): Represents performance-based restricted stock units granted on May 1, 2025, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee (the "Remuneration Committee") of the Board of Directors of the… Full note on SEC EDGAR
Footnote F3 (price): Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
Footnote F4 (shares): This RSU award was granted on May 1, 2025. 30% of the award vested on May 15, 2026. 30% of the award will vest on May 15, 2027, and the remaining 40% will vest on May 15, 2028, subject to continued service to the Company.
Footnote F5 (shares): This RSU award was granted on May 13, 2024, 30% of which vested on each of May 15, 2025 and May 15, 2026. The remaining 40% will vest on May 15, 2027, subject to continued service to the Company.
Footnote F6 (shares): Represents performance-based RSUs granted on May 13, 2024, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
Footnote F7 (shares): Represents performance-based RSUs granted on May 23, 2023, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
Footnote F2 (shares): Represents performance-based restricted stock units granted on May 1, 2025, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee (the "Remuneration Committee") of the Board of Directors of the… Full note on SEC EDGAR
Footnote F3 (price): Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
Footnote F4 (shares): This RSU award was granted on May 1, 2025. 30% of the award vested on May 15, 2026. 30% of the award will vest on May 15, 2027, and the remaining 40% will vest on May 15, 2028, subject to continued service to the Company.
Footnote F2 (shares): Performance-based restricted stock units granted on May 1, 2025, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee (the "Remuneration Committee") of the Board of Directors of the Company.
Footnote F3 (price): Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
Footnote F4 (shares): Represents performance-based RSUs granted on May 13, 2024, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
Footnote F5 (shares): Represents performance-based RSUs granted on May 23, 2023, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
Footnote F2 (shares): Represents performance-based restricted stock units granted on May 1, 2025, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee (the "Remuneration Committee") of the Board of Directors of the… Full note on SEC EDGAR
Footnote F3 (price): Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
Footnote F4 (shares): This RSU award was granted on May 1, 2025. 30% of the award vested on May 15, 2026. 30% of the award will vest on May 15, 2027, and the remaining 40% will vest on May 15, 2028, subject to continued service to the Company.
Footnote F5 (shares): Represents performance-based RSUs granted on May 13, 2024, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
Footnote F6 (shares): This RSU award was granted on May 13, 2024, 30% of which vested on each of May 15, 2025 and May 15, 2026. The remaining 40% will vest on May 15, 2027, subject to continued service to the Company.
Footnote F7 (shares): Represents performance-based RSUs granted on May 23, 2023, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
Footnote F2 (price): Represents weighted average sales price. The shares were sold at prices ranging from $207.01 to $207.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F3 (price): Represents weighted average sales price. The shares were sold at prices ranging from $208.16 to $208.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F4 (price): Represents weighted average sales price. The shares were sold at prices ranging from $209.00 to $209.95. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F5 (price): Represents weighted average sales price. The shares were sold at prices ranging from $210.00 to $210.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F6 (price): Represents weighted average sales price. The shares were sold at prices ranging from $211.00 to $211.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F7 (price): Represents weighted average sales price. The shares were sold at prices ranging from $212.00 to $212.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F8 (price): Represents weighted average sales price. The shares were sold at prices ranging from $213.00 to $213.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Footnote F9 (price): Represents weighted average sales price. The shares were sold at prices ranging from $214.00 to $214.94. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate… Full note on SEC EDGAR
Recent ARM Form 144 notices of proposed sale
3
An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
House of Representatives Periodic Transaction Reports from 2024. Senate filings are not included yet. The full history of ARM beside its insider purchases is in the Congress Tracker.
ARM insider trading FAQ
What is the latest insider trade for ARM?
ARM HOLDINGS PLC /UK (ARM) had 6 insider filings in the last 90 days, with the most recent on 23 September 2026. The full record for ARM runs to 34 Form 4 filings, the earliest from 27 March 2026. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying ARM stock?
No insider purchases of ARM were filed in the last 90 days.
How many insiders are selling ARM stock?
2 insider sales of ARM were filed in the last 90 days, totaling $5.78M.
Where can I see ARM SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects ARM Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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