BOLD

Boundless Bio, Inc.

Nasdaq · Pharmaceutical Preparations

Insider trades

Congress trades

Company Overview

A concise company profile alongside the latest public filing activity.

Boundless Bio is a biopharmaceutical company developing therapies targeting extrachromosomal DNA (ecDNA)-driven cancers, a mechanism of tumor cell gene amplification linked to aggressive disease and treatment resistance. The company's lead programs are designed to selectively target cells harboring ecDNA to treat cancers that are difficult to address with existing therapies.

Industry

Pharmaceutical Preparations

Headquarters

La Jolla, CA

Exchange

Nasdaq

Company profile sourced from SEC filings.

Corporate Insider Trades

Open-market purchases and sales by directors, officers, and other company insiders.

Insider	Type	Value	Shares / Price	Date
TANG KEVIN10% Owner	Buy	$277K	118,185at $2.34	Oct 16, 2026
TANG KEVIN10% Owner	Buy	$30K	12,790at $2.34	Oct 19, 2026
TANG KEVIN10% Owner	Buy	$43K	18,279at $2.33	Oct 19, 2026
TANG KEVIN10% Owner	Buy	$521	220at $2.37	Oct 20, 2026

Source: SEC EDGAR Form 4 filings

Congressional Trades

Recent disclosures by members of the U.S. House and Senate.

No recent congressional disclosures found for BOLD.

Source: Senate eFD and House Clerk STOCK Act disclosures

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For informational purposes only, not investment advice. Filings can be delayed, corrected, or amended. Trading activity alone does not predict future performance.