# Spear Bio

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/spear-bio

- Industry: Biotechnology
- Headquarters: Woburn, US
- Website: www.spear.bio
- Total disclosed funding: $47M
- Latest round: Series A (Jul 23, 2024)
- Investors on record: 5

## About

Based in Massachusetts, US, and founded in 2021 by Peng Yin and CTO Dr. Feng Xuan, Spear Bio, Inc., a.k.a. Spear Bio operates as a biotechnology company that focuses on the development of the next-generation ultrasensitive immunodiagnostics and proteomics platform-based on a breakthrough technology called successive proximity extension amplification reaction (SPEAR). In July 2024, Spear Bio, Inc. raised USD 45 million in series A funding co-led by new investors Foresite Capital and Bio-Techne Corporation, with participation from returning investors including Maverick Ventures, Yonghua Capital, and CDH Investments. Other unspecified investors also participated in the round.

The company’s product line includes NAB-Sure™, an assay and commercial proof-of-concept for ultrasensitive quantification of SARS-Cov-2 neutralizing antibodies from challenging samples such as finger-stick dried blood spots (DBS) and nasal swabs. Spear Bio also develops ultrasensitive immunoassays for detecting and quantifying low-abundance proteins in small sample volumes. The company's technology is based on a novel amplification method with significantly higher sensitivity than traditional immunoassays.

The company plans to use the July 2024 funding to expedite the extension of its assay menu and commercial offerings to address difficulties in protein research and early disease diagnosis.

## Funding rounds

- Series A, Jul 23, 2024, $45M — CDH Investments, Foresite Capital, Yonghua Capital, Bio-Techne Corporation, Maverick Ventures Israel
- Seed, Oct 11, 2023, $2.4M — CDH Investments, Yonghua Capital, Maverick Ventures Israel

## Investors

- CDH Investments (https://capitalatlas.ai/funds/cdh-investments) — Seed, Series A
- Yonghua Capital (https://capitalatlas.ai/funds/yonghua-capital) — Seed, Series A
- Maverick Ventures Israel (https://capitalatlas.ai/funds/maverick-ventures-israel) — Seed, Series A
- Foresite Capital (https://capitalatlas.ai/funds/foresite-capital) — Series A
- Bio-Techne Corporation — Series A