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ARM completed its acquisition of Artisan Components on December 23, 2004, bringing Artisan’s physical-design intellectual property into ARM’s system-on-chip portfolio. The deal’s ownership story later changed for one defined part of that portfolio: Arm sold Artisan’s foundation-IP business to Cadence in 2025.

When did ARM complete the Artisan acquisition?

ARM and Artisan announced their definitive acquisition agreement on August 23, 2004. The merger became effective on December 23, 2004, at 5:30 p.m. Eastern, after shareholder approvals. ARM’s completion announcement valued the merger consideration at $36.32 per Artisan share.

How much did ARM pay for Artisan?

The announced consideration averaged $9.60 in cash plus 4.41 ARM American depositary shares (ADSs) for each Artisan share. ARM and Artisan described the aggregate value as approximately $913 million, based on reference prices used when the deal was announced. The $36.32-per-share figure was the value stated at completion; these figures refer to different points in the transaction, not separate cash payments.

The terms filed with the SEC allowed Artisan shareholders to elect cash, ARM ADSs, ordinary shares, or combinations of them, subject to proration. The announced average package therefore should not be read as a guarantee that each shareholder received precisely that mix.

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#1 Best Overall
STM32 Nucleo Development Board with STM32F446RE MCU NUCLEO-F446RE
  • High-performance foundation line, ARM Cortex-M4 core with DSP and FPU, 512 Kbytes Flash, 180 MHz CPU, ART Accelerator, Dual QSPI
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  • Can be powered from USB
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What did Artisan add to ARM?

ARM was known for processor and system IP; Artisan contributed physical-design IP used in implementing system-on-chip (SoC) designs. The strategic aim was to offer a broader set of complementary SoC building blocks and combine the companies’ sales channels. The announcement described the rationale with the heading “ARM AND ARTISAN COMBINE TO DELIVER SYSTEM-ON-CHIP IP SOLUTIONS” and called the transaction “One of the Broadest Suppliers of IP in the Industry.”

Who owns Artisan IP now?

Ownership depends on which Artisan assets are meant. Arm’s 2004 acquisition brought Artisan into ARM, but Arm later sold the Artisan foundation-IP business to Cadence. According to Arm’s filing in 2026, that sale closed on August 26, 2025, for aggregate consideration of $128.5 million. The business sold included standard-cell libraries, memory compilers, and general-purpose I/Os.

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STM32 Nucleo-64 Development Board with STM32L476RG MCU NUCLEO-L476RG
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  • Can be powered from USB
  • Three LEDs, Two Push-buttons
  • Support of wide choice of Integrated Development Environments (IDEs) including IAR, ARM Keil, GCC-based IDEs

That sale establishes Cadence’s ownership of the defined foundation-IP business. It does not mean the 2004 corporate acquisition was reversed, nor does the filing establish that every asset historically associated with Artisan was included in the sale.

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STM32 Nucleo-64 Development Board with STM32L476RG MCU NUCLEO-L476RG
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Ultra-low-power with FPU ARM Cortex-M4 MCU 80 MHz with 1 Mbyte Flash, LCD, USB OTG, DFSDM; On-board ST-LINK/V2-1 debugger/programmer with SWD connector
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STM32F303RET6 MCU, ARM Cortex M4F core, STM32 Nucleo-64, Supports Arduino and ST Morpho connectivity
STM32F303RET6 MCU, ARM Cortex M4F core, STM32 Nucleo-64, Supports Arduino and ST Morpho connectivity
On-board ST-LINK/V2-1 debugger/programmer with SWD connector; Can be powered from USB.; Three LEDs, Two Push-buttons
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2PCS STM32F103C8T6 ARM STM32 Minimum System Development Board STM32F103C8T6 Core Learning Board + 1PCS ST-Link V2 Emulator Downloader Programmer, Random Color
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STM32F303RET6 MCU, ARM Cortex M4F core, STM32 Nucleo-64, Supports Arduino and ST Morpho connectivity
  • Mainstream Mixed signals MCUs ARM Cortex-M4 core with DSP and FPU, 512 Kbytes Flash, 72 MHz CPU, MPU, CCM, 12-bit ADC 5 MSPS, PGA, comparators
  • On-board ST-LINK/V2-1 debugger/programmer with SWD connector
  • Can be powered from USB.
  • Three LEDs, Two Push-buttons
  • Support of wide choice of Integrated Development Environments (IDEs) including IAR, ARM Keil, GCC-based IDEs

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