Latest SEC filings for Arm Holdings plc (ARM) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). All data sourced directly from SEC EDGAR — last updated 2026-06-04.
Bartels Laura Kathleen, listed as Chief Accounting Officer at ARM HOLDINGS PLC /UK, reported an open-market sale of 11,306 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Abbey William, listed as Chief Commercial Officer at ARM HOLDINGS PLC /UK, reported an open-market sale of 6,566 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Abbey William, listed as Chief Commercial Officer at ARM HOLDINGS PLC /UK, reported an open-market sale of 4,200 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Abbey William, listed as Chief Commercial Officer at ARM HOLDINGS PLC /UK, reported an open-market sale of 2,300 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Abbey William, listed as Chief Commercial Officer at ARM HOLDINGS PLC /UK, reported an open-market sale of 4,655 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Eaton Charlotte Claire, listed as Chief People Officer at ARM HOLDINGS PLC /UK, reported an open-market sale of 7,805 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Eaton Charlotte Claire filed a Form 144 with the SEC indicating intent to sell ARM (ARM HOLDINGS PLC /UK) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.
Collins Spencer, listed as Chief Legal Officer at ARM HOLDINGS PLC /UK, reported an open-market sale of 40,941 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Abbey William, listed as Chief Commercial Officer at ARM HOLDINGS PLC /UK, reported an open-market sale of 15,956 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Child Jason, listed as Chief Financial Officer at ARM HOLDINGS PLC /UK, reported an open-market sale of 31,920 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Eaton Charlotte Claire, listed as Chief People Officer at ARM HOLDINGS PLC /UK, reported an open-market sale of 7,100 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Eaton Charlotte Claire filed a Form 144 with the SEC indicating intent to sell ARM (ARM HOLDINGS PLC /UK) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.
Child Jason filed a Form 144 with the SEC indicating intent to sell ARM (ARM HOLDINGS PLC /UK) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.
Bartels Laura Kathleen (Chief Accounting Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Abbey William, listed as Chief Commercial Officer at ARM HOLDINGS PLC /UK, reported an open-market sale of 10,154 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Grisenthwaite Richard Roy, listed as Chief Architect at ARM HOLDINGS PLC /UK, reported an open-market sale of 24,339 ARM shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
Collins Spencer (Chief Legal Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Eaton Charlotte Claire (Chief People Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Haas Rene A. (Director, Chief Executive Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Child Jason (Chief Financial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Executives, directors, and large shareholders must report any purchase or sale of ARM shares within two business days. Consistent buying by multiple insiders is often read as a confidence signal; large sales may reflect diversification or liquidity needs rather than negative conviction.
Filed when a company affiliate intends to sell restricted or control shares. A Form 144 is a notice of intent, not confirmation — the actual sale is later confirmed via Form 4. It gives investors advance visibility into planned insider selling activity.
The 8-K is an event-driven filing that Arm Holdings plc must submit within four business days of a significant development — including earnings results, mergers, executive changes, credit facility updates, or regulatory actions. Each 8-K item code maps to a specific event type.
The 10-Q (quarterly) and 10-K (annual) are comprehensive reports covering Arm Holdings plc's financial results, risk factors, management discussion, and business operations. The 10-K includes audited financials and is the most complete public disclosure the company makes each year.
View valuation, growth metrics, AI Strong Buy score, demand zones, peer comparison, and more — all on the ARM stock analysis page.