How many insider trades does FilingIQ track for BOLD?

FilingIQ tracks 332 Form 4 insider transactions for BOLD (Boundless Bio, Inc.), covering filings from Jul 25, 2016 onwards. 10 of those are dated within the last 90 days.

Are BOLD insiders net buyers or net sellers?

Across the full Form 4 history for BOLD, 42 transactions (13%) were open-market purchases and 136 (41%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.

Where does BOLD insider data come from?

Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ normalises insider identity across reporting variations and scores discretionary open-market purchases and sales on its multi-factor composite model.

What sector is BOLD in?

Boundless Bio, Inc. (BOLD) is classified in the Healthcare sector, specifically Biotechnology, with a current market capitalisation of $24.87M.

BOLD insider trading

NasdaqGS Healthcare

Boundless Bio, Inc.: insider trade history from SEC Form 4 filings.

Total Form 4 trades

332

Last 90 days

Buys / sells

13% / 41%

Market cap

$24.87M

About Boundless Bio, Inc.

Boundless Bio, Inc., a clinical-stage oncology company, develops interrogating extrachromosomal DNA (ecDNA) directed therapies for treating patients with oncogene amplified cancers. Its lead product candidate is BBI-940, an ecDNA-directed therapeutic candidate (ecDTx) that is in Phase 1/2 clinical trial in patients with estrogen receptor positive and human epidermal growth factor receptor 2 negative breast cancer, as well as patients with triple-negative breast cancer luminal androgen receptor subtype. The company was formerly known as Pretzel Therapeutics, Inc. and changed its name to Boundless Bio, Inc. in July 2019. Boundless Bio, Inc. was incorporated in 2018 and is headquartered in San Diego, California.

Company website: boundlessbio.com

BOLD insider activity at a glance

FilingIQ tracks 332 insider transactions for BOLD in filings since Jul 25, 2016. The most recent transaction is dated Aug 26, 2026.

Across the full history, 42 open-market purchases and 136 open-market sales were filed under transaction codes P and S respectively. Compensatory share awards (code A) and option exercises (code M) are tracked separately and not counted here.

The average FilingIQ composite score on BOLD insider trades is 45.3/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.

View live BOLD trades on FilingIQ Raw filings on SEC EDGAR

Latest BOLD Form 4 filings

ARCH Venture Fund IX, L.P.

Most recent disclosures. Sign up to filter by score, transaction code, or insider role.

Other Healthcare tickers with recent insider activity

UTHR 820

UNITED THERAPEUTICS Corp

THERMO FISHER SCIENTIFIC INC.

NTRA 129

Natera, Inc.

ATTO 123

Attovia Therapeutics, Inc.

CORT 110

CORCEPT THERAPEUTICS INC

TEM 104

Tempus AI, Inc.

Frequently asked

How many insider trades does FilingIQ track for BOLD?: FilingIQ tracks 332 Form 4 insider transactions for BOLD (Boundless Bio, Inc.), covering filings from Jul 25, 2016 onwards. 10 of those are dated within the last 90 days.
Are BOLD insiders net buyers or net sellers?: Across the full Form 4 history for BOLD, 42 transactions (13%) were open-market purchases and 136 (41%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
Where does BOLD insider data come from?: Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ normalises insider identity across reporting variations and scores discretionary open-market purchases and sales on its multi-factor composite model.
What sector is BOLD in?: Boundless Bio, Inc. (BOLD) is classified in the Healthcare sector, specifically Biotechnology, with a current market capitalisation of $24.87M.

Methodology & sources

Every BOLD insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). The FilingIQ composite score is documented in full on the team page and algo disclosure. Not investment advice; see disclaimer.