Sunstone Management

Sunstone Management, Inc. is a venture capital and private equity firm founded in 2015, based in Irvine, California. The firm specializes in growth capital and focuses on small and lower middle market investments, primarily in the technology and services sectors. Sunstone Management is dedicated to providing comprehensive wealth management solutions for high net worth clients worldwide. The firm invests in early-stage technology companies and typically targets U.S.-based investments, offering a range of investment strategies that include short-term senior debt, equity, and venture capital options to meet the diverse goals of its investors.

Clark Hsu

Investment Associate

Mark Jacoub

Technical Business Analyst

Nathan Jia

Vice President

John Keisler

CEO and Managing Partner

Eric Romero

Director of Economic Development

Jayro Sandoval

Economic Development Associate

Mike Stone

Chief Investment Officer and Partner

Jing Sun

Associate Vice President

Lloyd Wei

Vice President

Queena Zhao

Partner

Past deals in EEG

CenSyn

Pre Seed Round in 2022
CenSyn is a brain health screening platform focused on enhancing the accessibility and efficiency of diagnosing various neurological conditions. The company has developed a handheld EEG monitoring device aimed at accelerating the screening process for Alzheimer's, traumatic brain injury, and epilepsy. Their proprietary software facilitates long-term management of brain health by allowing clinicians to wirelessly monitor and record brain electrical activity in real time. This innovative approach enables the rapid detection of altered mental status, supporting timely diagnosis and immediate treatment, ultimately reducing inpatient costs and improving care for diverse patient populations.

Zeto

Series A in 2020
Zeto Inc. is a medical technology company based in Santa Clara, California, focused on revolutionizing electroencephalography (EEG) practices in hospitals. Established in 2014, Zeto has developed an innovative dry electrode EEG system that features a wireless, easy-to-wear headset designed to enhance patient experience and streamline the EEG process. This system is the first of its kind to receive FDA clearance, eliminating the need for extensive preparation and specialized technicians. It significantly reduces setup time from over 30 minutes to just five, allowing for quicker and more efficient EEG interpretation. The accompanying digital platform offers instant data upload, live viewing capabilities, and analytical tools, enabling remote analysis by neurologists. Zeto has gained recognition for its advancements in EEG technology, receiving multiple awards, including funding from the Epilepsy Foundation and accolades for innovation in medical technology.
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