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The Venture Codex

GreyMatter Capital

53 W 72nd Street, 7D, New York, NY, 10023, United States

Overview

GreyMatter is a venture capital firm created to support bold founders building the future of mental health and emotional wellness. We believe innovative approaches to mental wellbeing have the power to not only reshape healthcare, but to touch every part of our lives, improving the way we live, work, learn, relate to one another.

Total investments
18
Lead investments
0
Investments · 12mo
4
Active investors
5

Sector focus

  • Health Care
  • Mental Health
  • Software
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Investment portfolio

  • Ours Privacy

    Participated · Series A · Aug 2026

    Founded by Jessica Holton, Ours Privacy provides a HIPAA-compliant marketing and data infrastructure platform that helps healthcare organizations manage and clean personal health information before transmitting data to third parties. Its customer data platform integrates with various data sources, including websites and electronic health records. The company positions itself to enable secure digital marketing for healthcare providers, payers, and digital health companies. Ours Privacy aims to expand its footprint in healthcare while continuing product development and scaling operations. The firm is based in the United States and shares its product and company information on https://oursprivacy.com.

  • Flourish Health

    Participated · Series A · Jul 2026

    Flourish Health delivers intensive in-home mental health care for children and young adults through psychiatrist-led Care Pods composed of a child and adolescent psychiatrist, a licensed therapist, a patient guide, and a family guide. The company built a proprietary technology platform that integrates patient touchpoints, EMR and prescribing capabilities, workflow automation, team collaboration, and AI to support engagement and coordination while clinicians make clinical decisions. Flourish specializes in three clinical populations: children with externalizing behaviors, young people with multiple suicide attempts or suicide-related hospitalizations, and patients with complex needs and family situations often turned away by other clinics. Studies run with multiple major health plans report large reductions in hospitalization (70–96%), residential treatment (69–90%), and sustained decreases in higher levels of care post-discharge (80–95%). Flourish commits to beginning care within one week of referral, reports 92% month-over-month retention during its 12-month programs, and says those programs cost less than one month of inpatient treatment.

  • Coral Care

    Participated · Series A · Feb 2026

    Founded in 2023 by Jen Wirt, Coral Care delivers pediatric speech, occupational, and physical therapy directly in children’s homes while equipping clinicians with software that handles credentialing, scheduling, billing, and documentation. The company operates in Massachusetts, New Hampshire, Texas, Illinois, and Pennsylvania, and has recently launched services in Dallas, Houston, Chicago, Philadelphia, and Pittsburgh. Coral Care’s network has grown to more than 400 licensed clinicians, and its platform reportedly cuts administrative workload by up to 15 hours per provider each week. More than 75% of families continue therapy for longer than four months, indicating strong engagement and retention. By embedding care in a child’s natural environment, the company aims to improve access, continuity, and contextual relevance of therapy. Coral Care plans to continue scaling its clinician base, enter additional markets, and further invest in its technology infrastructure using the newly raised capital. Its dual-sided model simultaneously increases provider supply and improves convenience for families seeking insurance-covered developmental care.

  • FamilyWell Health

    Participated · Series A · Nov 2025

    FamilyWell Health is a Boston-based women’s mental health company founded in 2022 by Dr. Jessica Gaulton. The platform embeds virtual mental health services—including care coordination, coaching, therapy, and psychiatry—directly into partner clinics and health systems, connecting patients to care within 24 hours. A specialized, multidisciplinary care team supports patients throughout their treatment journey. FamilyWell currently operates in Massachusetts, New Hampshire, Connecticut, Illinois, and Texas, demonstrating early geographic traction. The company plans to leverage its newly raised capital to expand nationwide, targeting additional health systems, clinics, and insurers. While no revenue or user figures were disclosed, the company’s swift state-by-state rollout underscores its growth ambitions and demand for maternal mental health solutions.

  • NeuroBionics

    Participated · Equity · Jan 2025

    NeuroBionics is an MIT spinout commercializing hair-thin bioelectric fibers made from carbon nanotubes that can be routed through brain blood vessels using a stent-like procedure to deliver neuromodulation. The fibers are powered by a standard implantable battery shaped like an AirPod case designed to last five to ten years and aim to avoid the open‑brain drilling required for traditional deep brain stimulation. Founders MJ Antonini (CEO) and Nicky Driscoll (CTO) built the company from roughly a decade of MIT fiber research and secured three patents that give MIT a small ownership stake. The startup says carbon nanotubes may be cheaper, longer‑lasting, reduce tissue damage, and improve MRI compatibility versus platinum or iridium oxide electrodes. NeuroBionics closed $5 million in funding led by Dolby Family Ventures and will use the capital to complete its clinical device and pursue preclinical safety and efficacy testing in pigs. If preclinical work succeeds, the company plans to seek FDA review and an investigational device exemption to begin first‑in‑human early feasibility studies, with a possible market timeline mentioned around 2030.

Team