# Halda Therapeutics

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/halda-therapeutics

- Industry: Biotechnology
- Headquarters: New Haven, US
- Website: www.haldatx.com
- Total disclosed funding: $173M
- Latest round: Series B (Aug 12, 2024)
- Investors on record: 12

## About

Based in Connecticut, US, and founded in 2019 by Craig M. Crews, Halda Therapeutics, LLC operates as a biotechnology company that is developing Regulated Induced Proximity Targeting Chimeras Therapeutics (RIPTACTM), which is a novel class of cancer therapies. In November 2025, Johnson & Johnson, Inc. agreed to fully acquire Halda Therapeutics, LLC from from RA Capital Management, 6 Dimensions Capital, Canaan Partners, Connecticut Innovations, Elm Street Ventures, WuXi Healthcare Ventures, Access Industries, Boxer Capital, Deep Track Capital, Frazier Healthcare Partners, Taiho Ventures, and Vida Ventures for USD 3.05 billion in cash.

Halda Therapeutics develops RIPTAC therapeutics to build a pipeline of new precision treatments for many cancers, including metastatic, castrate-resistant prostate cancer, and more. The company’s pipeline includes additional RIPTAC pipeline programs in development across a range of cancers, including treatment of earlier stages of cancer.

## Funding rounds

- Series B, Aug 12, 2024, $126M — Frazier Healthcare Partners, Canaan Partners, Access Industries, Connecticut Innovations, Elm Street Ventures, RA Capital Management, Taiho Ventures, Vida Ventures, Deep Track Capital, Boxer Capital
- Series B, Dec 1, 2021, $41M — Access Industries
- Series A, Feb 22, 2019, $6.3M — Canaan Partners, Connecticut Innovations, Elm Street Ventures, 6 Dimensions Capital, WuXi Healthcare Ventures

## Investors

- Canaan Partners (https://capitalatlas.ai/funds/canaan-partners) — Series A, Series B
- Connecticut Innovations (https://capitalatlas.ai/funds/connecticut-innovations) — Series A, Series B
- Elm Street Ventures (https://capitalatlas.ai/funds/elm-street-ventures) — Series A, Series B
- 6 Dimensions Capital (https://capitalatlas.ai/funds/6-dimensions-capital) — Series A
- WuXi Healthcare Ventures — Series A
- Access Industries (https://capitalatlas.ai/funds/access-industries) — Series B
- Frazier Healthcare Partners (https://capitalatlas.ai/funds/frazier-healthcare-partners) — Series B
- RA Capital Management (https://capitalatlas.ai/funds/ra-capital-management) — Series B
- Taiho Ventures (https://capitalatlas.ai/funds/taiho-ventures) — Series B
- Vida Ventures (https://capitalatlas.ai/funds/vida-ventures) — Series B
- Deep Track Capital (https://capitalatlas.ai/funds/deep-track-capital) — Series B
- Boxer Capital (https://capitalatlas.ai/funds/boxer-capital) — Series B