Ally Bridge Group

Ally Bridge Group is a healthcare-focused private investment group founded in 2013, with operations in Hong Kong and the United States. The firm specializes in venture and growth capital, buyout, and hedge fund investing, primarily targeting life sciences companies and innovative medical technologies. With a commitment to bridging the gap between groundbreaking healthcare innovations and global markets, Ally Bridge Group invests in both private and public equity across various sectors, including medical devices and biopharmaceuticals. By leveraging its extensive expertise and network, the firm aims to support the development and growth of its portfolio companies, focusing on transformative solutions that address significant unmet medical needs.

Slanix Alex

Portfolio Manager and President, Public Equity

Tinnie Chau

Vice President

Charles Chon

Managing Director

Paresh Kumar

Vice President

David Nikodem

Managing Director

Sebastian Paquette

Principal, Private Equity

Plachtyna, Steven

Vice President

Reese Yeh

Managing Director

Frank Yu

Founder and CEO

Steven Plachtyna

Vice President, Private Equity

Past deals in Health Care

Kandu Health

Venture Round in 2025
Kandu Health is a technology-driven healthcare company focused on enhancing the quality of life for stroke survivors and their families. The company specializes in stroke recovery training, stroke detection research, and educational services. Kandu Health provides remote clinical support through its application, which delivers personalized information, resources, and guidance tailored to each participant. This approach empowers stroke survivors to take charge of their recovery and assists them in adapting to life after a stroke.

Cardiac Dimensions

Series E in 2025
Cardiac Dimensions, Inc. is a medical device company focused on developing minimally invasive treatments for heart failure and associated cardiovascular conditions. The company is known for its Carillon Mitral Contour System, a permanent implant designed to treat functional mitral regurgitation through a non-surgical, catheter-based approach that reshapes the mitral valve and reduces regurgitation. Established in 2000, Cardiac Dimensions is headquartered in Kirkland, Washington, with additional operations in Sydney, Australia, and Offenbach, Germany.

Aadi Bioscience

Post in 2025
Aadi Bioscience, Inc. is a clinical-stage biopharmaceutical company based in Pacific Palisades, California, focused on developing precision therapies for genetically-defined cancers. The company specializes in mTOR inhibitors, particularly ABI-009, aimed at treating patients with alterations in the TSC1 or TSC2 genes, where existing mTOR inhibitors have limitations in pharmacology, drug delivery, or safety. Aadi's primary focus is on providing transformational therapies for patients with ultra-rare cancers, such as perivascular epithelioid cell tumors (PEComa). Since its founding in 2011, Aadi Bioscience has aimed to address significant unmet medical needs in oncology and related therapeutic areas.

Aadi Bioscience

Post in 2024
Aadi Bioscience, Inc. is a clinical-stage biopharmaceutical company based in Pacific Palisades, California, focused on developing precision therapies for genetically-defined cancers. The company specializes in mTOR inhibitors, particularly ABI-009, aimed at treating patients with alterations in the TSC1 or TSC2 genes, where existing mTOR inhibitors have limitations in pharmacology, drug delivery, or safety. Aadi's primary focus is on providing transformational therapies for patients with ultra-rare cancers, such as perivascular epithelioid cell tumors (PEComa). Since its founding in 2011, Aadi Bioscience has aimed to address significant unmet medical needs in oncology and related therapeutic areas.

ProMIS Neurosciences

Post in 2024
ProMIS Neurosciences, Inc. is a development-stage biotechnology company based in Toronto, Canada, focused on developing precision therapeutic solutions for neurodegenerative diseases, primarily Alzheimer’s disease (AD), amyotrophic lateral sclerosis (ALS), and Parkinson’s disease (PD). Established in 2004, the company employs a proprietary target discovery engine that integrates thermodynamic and computational techniques to identify disease-specific epitopes on misfolded proteins. Its lead product candidates include PMN310, PMN350, and PMN330, which are monoclonal antibodies targeting toxic forms of amyloid beta oligomers and prion-like proteins associated with AD. Additionally, ProMIS is developing treatments targeting the neurotoxic tau protein in AD and proteins linked to ALS and PD. The company collaborates with BC Neuroimmunology to advance proprietary diagnostic assays and blood-based tests for Alzheimer’s disease, enhancing early detection and treatment efficacy. Formerly known as Amorfix Life Sciences Ltd., ProMIS Neurosciences has rebranded itself to reflect its focus on neurological therapeutics.

Vida Health

Venture Round in 2023
Vida Health, Inc. is a virtual care company based in San Francisco, California, focused on addressing chronic physical and behavioral health conditions. The company offers a comprehensive digital platform that combines artificial intelligence with human support, providing users access to coaches, nutritionists, diabetes educators, nurses, trainers, and licensed therapists. This platform features personalized content, lessons, and habit recommendations, along with video sessions and messaging to facilitate communication. Vida Health's approach aims to treat the whole health of individuals by integrating mental and physical care, helping users prevent, manage, and potentially reverse chronic conditions such as diabetes and hypertension, as well as associated mental health issues like stress, depression, and anxiety. Founded in 2014, Vida Health has earned the trust of major employers and health plans in the United States for its clinically validated services.

ProMIS Neurosciences

Post in 2023
ProMIS Neurosciences, Inc. is a development-stage biotechnology company based in Toronto, Canada, focused on developing precision therapeutic solutions for neurodegenerative diseases, primarily Alzheimer’s disease (AD), amyotrophic lateral sclerosis (ALS), and Parkinson’s disease (PD). Established in 2004, the company employs a proprietary target discovery engine that integrates thermodynamic and computational techniques to identify disease-specific epitopes on misfolded proteins. Its lead product candidates include PMN310, PMN350, and PMN330, which are monoclonal antibodies targeting toxic forms of amyloid beta oligomers and prion-like proteins associated with AD. Additionally, ProMIS is developing treatments targeting the neurotoxic tau protein in AD and proteins linked to ALS and PD. The company collaborates with BC Neuroimmunology to advance proprietary diagnostic assays and blood-based tests for Alzheimer’s disease, enhancing early detection and treatment efficacy. Formerly known as Amorfix Life Sciences Ltd., ProMIS Neurosciences has rebranded itself to reflect its focus on neurological therapeutics.

Imperative Care

Series D in 2021
Imperative Care, Inc. is dedicated to enhancing the speed and effectiveness of acute stroke treatment through innovative medical technologies. Founded in 2015 and based in Campbell, California, the company has developed a range of solutions aimed at addressing critical needs in stroke care. Among its offerings is the Large Distal Platform, a large diameter catheter designed to reach treatment sites for both ischemic and hemorrhagic strokes. Complementing this is the ZOOM Aspiration System, a comprehensive solution that works in conjunction with the Large Distal Platform and includes various trackable reperfusion catheters for effective clot removal. By advancing stroke treatment technologies, Imperative Care aims to improve patient outcomes and optimize recovery processes for those affected by strokes.

Vida Health

Venture Round in 2020
Vida Health, Inc. is a virtual care company based in San Francisco, California, focused on addressing chronic physical and behavioral health conditions. The company offers a comprehensive digital platform that combines artificial intelligence with human support, providing users access to coaches, nutritionists, diabetes educators, nurses, trainers, and licensed therapists. This platform features personalized content, lessons, and habit recommendations, along with video sessions and messaging to facilitate communication. Vida Health's approach aims to treat the whole health of individuals by integrating mental and physical care, helping users prevent, manage, and potentially reverse chronic conditions such as diabetes and hypertension, as well as associated mental health issues like stress, depression, and anxiety. Founded in 2014, Vida Health has earned the trust of major employers and health plans in the United States for its clinically validated services.

Imperative Care

Series C in 2019
Imperative Care, Inc. is dedicated to enhancing the speed and effectiveness of acute stroke treatment through innovative medical technologies. Founded in 2015 and based in Campbell, California, the company has developed a range of solutions aimed at addressing critical needs in stroke care. Among its offerings is the Large Distal Platform, a large diameter catheter designed to reach treatment sites for both ischemic and hemorrhagic strokes. Complementing this is the ZOOM Aspiration System, a comprehensive solution that works in conjunction with the Large Distal Platform and includes various trackable reperfusion catheters for effective clot removal. By advancing stroke treatment technologies, Imperative Care aims to improve patient outcomes and optimize recovery processes for those affected by strokes.
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