Home›Companies›Biotech & Pharma›Boundless Bio

Boundless Bio, Inc.

Updated Oct 27, 2026·Latest SEC filing Aug 15, 2023·Suggest an edit

About Boundless Bio

Boundless Bio is a private company based in San Diego, California. It has reported $228,817,514 raised in three offerings on Form D since March 2020. Its chief executive is Zachary Hornby.

Funding Rounds (SEC Form D)

First saleFiled with SECAmount soldInvestorsAvg. checkTermsFiling
Apr 5, 2023Aug 15, 2023$100,000,000fully sold26$3.8MEquityRule 506(b)Form D ↗
Apr 23, 2021May 4, 2021$105,585,007fully sold28$3.7MEquityRule 506(b)Form D ↗
Aug 24, 2018Mar 12, 2020$23,232,507of $52.5M target23$1.0MEquityRule 506(b)Form D ↗
Total, three offerings$228,817,514

First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.

Leadership Team

Executive officers and directors listed on Boundless Bio's Form D filed Aug 15, 2023.

ZH
Zachary Hornby
CEO, President, and Director
JL
Jennifer Lew
Director

Earlier filings also listed Ho Cho, Ph.D. (director, last listed May 2021), Carolyn Ng, Ph.D. (director, last listed May 2021), Scott Moorefield, Ph.D. (director, last listed Mar 2020), Jason Christiansen, Ph.D. (director, last listed Mar 2020) and Chris Hassig, Ph.D. (director, last listed Mar 2020).

Sources

  1. SECBoundless Bio, Inc. filing history