CMC Materials, Inc. Stock: price and insider trades · United States · SEC (Form 4)

About CMC Materials, Inc.

CMC Materials, Inc. was a U.S.-based specialty materials supplier focused primarily on the semiconductor industry. It traded on the NASDAQ under the ticker CCMP and was headquartered in the United States, with its operating base historically associated with Illinois. Before its acquisition, the company was widely viewed as a niche, technology-driven materials provider, benefiting from strong customer qualification requirements, proprietary formulations, and close integration into semiconductor manufacturing workflows. Its international footprint supported customers across North America, Asia, and Europe. ([investor.entegris.com](https://investor.entegris.com/news/news-details/2021/Entegris-to-Acquire-CMC-Materials-to-Create-a-Leader-in-Electronic-Materials-12-15-2021/default.aspx?utm_source=openai)) The company’s history reflects the long-term consolidation of electronic materials suppliers serving advanced chip manufacturing. CMC Materials built its franchise around highly engineered consumables used in critical semiconductor process steps. Its core business lines included chemical mechanical planarization (CMP) slurries, CMP pads, electronic chemicals, and related materials technologies. These products are used to polish, clean, and control wafer surfaces during the fabrication of smaller, faster, and more complex semiconductor devices. The company also expanded through acquisitions, including International Test Solutions in 2021, which broadened its exposure to semiconductor test consumables. ([entegris.com](https://www.entegris.com/en/home/brands/cmc-materials-july-2022.html?utm_source=openai)) From a competitive standpoint, CMC Materials held a respected position in highly specialized semiconductor materials markets. Its edge came from formulation know-how, process expertise, customer intimacy, and the ability to deliver products that must perform consistently in very demanding manufacturing environments. Because these materials are essential to advanced chip production, supplier reliability and application-specific performance are critical. Entegris stated that the acquisition of CMC Materials strengthened its end-to-end CMP solutions portfolio, underscoring the strategic value of CMC’s product set. ([entegris.com](https://www.entegris.com/en/home/brands/cmc-materials-july-2022.html?utm_source=openai)) For investors, the most important recent development is that CMC Materials is no longer an independent listed company: Entegris completed the acquisition on July 6, 2022, effectively removing the standalone CCMP equity story. Since then, the key news flow has centered on post-merger integration, product portfolio rationalization, and the continuation of innovation within electronic materials. In sector terms, CMC Materials is best understood as a high-tech industrial materials business with structural semiconductor exposure, but also with meaningful cyclicality and significant qualification barriers that shaped its market position. ([investor.entegris.com](https://investor.entegris.com/news/news-details/2022/Entegris-Completes-Acquisition-of-CMC-Materials-Solidifying-Position-as-the-Global-Leader-in-Electronic-Materials-07-06-2022/default.aspx?utm_source=openai))