Wednesday, October 28, 2026
Data from SEC filings, checked daily
Public filings, plainly told
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Insider tradingForm 4

Boundless Bio, Inc. (BOLD) Insider Trading

7 open-market trades reported since Aug 28, 2026: 6 purchases worth $401K and 1 sales worth $54K.

By insider

InsiderRoleBuysBoughtSellsSoldLatest
Kevin Tang10% owner6$401K1$54KOct 26, 2026

All trades

BOLD insider trades
FiledTradedInsiderRoleTypeSharesPrice ($)ValueHolding3 mo. afterFiling
Oct 26Oct 26Kevin Tang10% owner10% owner (ind.)▲ BUY9,6062.38$23K+0.3%Form 4 ↗
Oct 26Oct 23Kevin Tang10% owner10% owner (ind.)▲ BUY6,2342.38$15K+0.2%Form 4 ↗
Oct 26Oct 22Kevin Tang10% owner10% owner (ind.)▲ BUY5,8002.40$14K+0.2%Form 4 ↗
Oct 20Oct 16Kevin Tang10% owner10% owner (ind.)▲ BUY118,1852.34$277K+4.2%Form 4 ↗
Oct 20Oct 19Kevin Tang10% owner10% owner (ind.)▲ BUY31,0692.33$73K+1.1%Form 4 ↗
Oct 20Oct 20Kevin Tang10% owner10% owner (ind.)▲ BUY2202.37$521+0.0%Form 4 ↗
Aug 28Aug 26Kevin Tang10% owner10% owner (ind.)▼ SELL18,3002.97$54K−0.6%Form 4 ↗
Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings