InsiderCIK 1178579

Kevin Tang: Insider Trades

Every open-market purchase and sale Kevin Tang reported on Form 4 since Aug 13, 2026, with how the stock moved after each purchase.

BOLD Boundless Bio, Inc. · 10% owner

6Purchases

$401KBought

1Sales

$54KSold

Track record of purchases

Not enough time has passed, or price data is missing, to measure these purchases yet.

Change in the stock price from the price paid to the closest weekly price about 1, 3 and 6 months later, from SEC fails-to-deliver data. Dividends are not included, and purchases with a possible stock split in between are skipped. Past results do not predict future ones. How we measure this

All reported trades

Trades by Kevin Tang
Filed	Traded	Ticker	Role	Type	Shares	Price ($)	Value	Holding	Filing
Oct 26	Oct 26	BOLD	10% owner (ind.)	▲ BUY	9,606	2.38	$23K	+0.3%	Form 4 ↗
Oct 26	Oct 23	BOLD	10% owner (ind.)	▲ BUY	6,234	2.38	$15K	+0.2%	Form 4 ↗
Oct 26	Oct 22	BOLD	10% owner (ind.)	▲ BUY	5,800	2.40	$14K	+0.2%	Form 4 ↗
Oct 20	Oct 20	BOLD	10% owner (ind.)	▲ BUY	220	2.37	$521	+0.0%	Form 4 ↗
Oct 20	Oct 19	BOLD	10% owner (ind.)	▲ BUY	31,069	2.33	$73K	+1.1%	Form 4 ↗
Oct 20	Oct 16	BOLD	10% owner (ind.)	▲ BUY	118,185	2.34	$277K	+4.2%	Form 4 ↗
Aug 28	Aug 26	BOLD	10% owner (ind.)	▼ SELL	18,300	2.97	$54K	−0.6%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings

Names come from the filings. Different people can share a name, so we group trades by the SEC's reporting-owner number (CIK) instead.