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BOLDHealthcare

Boundless Bio Inc (BOLD) Insider Trading

In the last 90 days, 2 Boundless Bio Inc (BOLD) insiders reported 4 open-market purchases totaling $802,420 and 2 sales totaling $108,702. The most recent open-market purchase was reported on Oct 26, 2026. Source: SEC Form 4 filings.

SEC-reported filing activity is provided for research purposes and is not investment advice.

90-day C-suite buyers
0
90-day purchase value
$802,420
Corporate buyers
2
Latest transaction
Oct 26, 2026

Executive filings

Open-market transaction history

Purchase and sale summaries are ordered by the latest reported transaction date.

Open-market insider purchase and sale transactions
DateInsider nameRoleTypeSharesPriceTotal value
Oct 26, 2026Kevin Tang10% OwnerOpen Market Purchase21,640$2.39$51,620
Oct 26, 2026Tang Capital Management LLCCorporate insiderOpen Market Purchase21,640$2.39$51,620
Oct 20, 2026Kevin Tang10% OwnerOpen Market Purchase149,474$2.34$349,590
Oct 20, 2026Tang Capital Management LLCCorporate insiderOpen Market Purchase149,474$2.34$349,590
Aug 26, 2026Kevin Tang10% OwnerSale18,300$2.97$54,351
Aug 26, 2026Tang Capital Management LLCCorporate insiderSale18,300$2.97$54,351
Jul 21, 2026Kevin Tang10% OwnerOpen Market Purchase4,863$2.44$11,866
Jul 21, 2026Tang Capital Management LLCCorporate insiderOpen Market Purchase4,863$2.44$11,866
Jul 16, 2026Kevin Tang10% OwnerOpen Market Purchase63,969$2.43$155,643
Jul 16, 2026Tang Capital Management LLCCorporate insiderOpen Market Purchase63,969$2.43$155,643
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Common questions

BOLD insider trading FAQ

Are BOLD insiders buying or selling?
Over the last 90 days, BOLD insiders were net buyers, reporting $802,420 of open-market purchases and $108,702 of sales.
When was the last BOLD insider purchase?
The most recent open-market purchase of Boundless Bio Inc stock by an insider was reported on Oct 26, 2026, one of 4 purchases in the last 90 days.
Where does BOLD insider trading data come from?
Watch Insiders reads the SEC Form 4 filings that Boundless Bio Inc officers, directors, and 10% owners submit to EDGAR, and refreshes this page daily.