# Subtle Medical

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/subtle-medical

- Industry: Software
- Headquarters: Menlo Park, US
- Website: www.subtlemedical.com
- Total disclosed funding: $49M
- Latest round: Series C (Jun 2, 2026)
- Investors on record: 19

## About

Based in California, US, founded in 2017, Subtle Medical Inc. operates as a provider of medical software imaging intended to improve medical imaging quality. The company has partnerships with Ruijin Hospital, Tiantan Hospital, Changhai Hospital, Chaoyang Hospital, the First Affiliated Hospital of Soochow University, Meinian University Health, Yiyi Sunshine, and Panorama Medical. The company was co-founded by Enhao Gong and Greg Zaharchuk. In June 2026, Subtle Medical Inc. raised USD 33 million in Series C funding led by Morgan Stanley Expansion Capital, with participation from Shinhan Venture Investment, Fusion Fund, EnvisionX Capital, BRV Capital Management and Samsung Venture Investment.

The company's self-developed medical imaging products include SubtleMR™, SubtlePET™, SubtleGAD™, and SubtleSYNTH™. These products are primarily used in the fields of magnetic resonance imaging (MRI) and positron emission tomography (PET) and can be applied to scenarios such as image quality enhancement, workflow optimization, and clinical research applications. 

The company plans to use the June 2026 funding to accelerate product development, expand commercial adoption globally, and scale its AI imaging platform across MRI, PET, and CT workflows.

## Funding rounds

- Series C, Jun 2, 2026, $21M — Shinhan Venture Investment, Samsung Venture Investment, Morgan Stanley Expansion Capital, Fusion Fund, BRV Capital Management, EnvisionX Capital
- Series B, Jul 24, 2024, $10M — Samsung Venture Investment, Fusion Fund, BRV Capital Management, EnvisionX Capital, Ignite Innovation
- Series A, Nov 19, 2020, $12M — Delta Capital, DCVC, Fusion Fund, 3E Bioventures Capital, Foothill Ventures, Nina Capital, Crista Galli Ventures
- Seed, May 28, 2018, $5M — Bessemer Venture Partners, DCVC, Breyer Capital, Fusion Fund, Stanford-StartX Fund, Wisemont Capital, Baidu Ventures, Foothill Ventures
- Seed, Sep 1, 2017, $1.1M — DCVC, ZhenFund, Wisemont Capital, Baidu Ventures, Foothill Ventures

## Investors

- DCVC (https://capitalatlas.ai/funds/dcvc) — Seed, Series A
- ZhenFund (https://capitalatlas.ai/funds/zhenfund) — Seed
- Wisemont Capital (https://capitalatlas.ai/funds/wisemont-capital) — Seed
- Baidu Ventures (https://capitalatlas.ai/funds/baidu-ventures) — Seed
- Foothill Ventures (https://capitalatlas.ai/funds/foothill-ventures) — Seed, Series A
- Bessemer Venture Partners (https://capitalatlas.ai/funds/bessemer-venture-partners) — Seed
- Breyer Capital (https://capitalatlas.ai/funds/breyer-capital) — Seed
- Fusion Fund (https://capitalatlas.ai/funds/fusion-fund) — Seed, Series A, Series B, Series C
- Stanford-StartX Fund — Seed
- Delta Capital (https://capitalatlas.ai/funds/delta-capital) — Series A
- 3E Bioventures Capital (https://capitalatlas.ai/funds/3e-bioventures-capital) — Series A
- Nina Capital (https://capitalatlas.ai/funds/nina-capital) — Series A
- Crista Galli Ventures (https://capitalatlas.ai/funds/crista-galli-ventures) — Series A
- Samsung Venture Investment (https://capitalatlas.ai/funds/samsung-venture-investment) — Series B, Series C
- BRV Capital Management (https://capitalatlas.ai/funds/brv-capital-management) — Series B, Series C
- EnvisionX Capital (https://capitalatlas.ai/funds/envisionx-capital) — Series B, Series C
- Ignite Innovation (https://capitalatlas.ai/funds/ignite-innovation) — Series B
- Shinhan Venture Investment (https://capitalatlas.ai/funds/shinhan-venture-investment) — Series C
- Morgan Stanley Expansion Capital (https://capitalatlas.ai/funds/morgan-stanley-expansion-capital) — Series C