Name: BOLD Insider Trading Activity
Creator: Tracefour
License: https://www.usa.gov/government-works
Keywords: BOLD, insider trading, SEC Form 4, insider transactions

Question 1

How many SEC Form 4 insider filings does BOLD have?

Accepted Answer

Boundless Bio, Inc. (BOLD) has 9 SEC Form 4 filings (27 transaction rows) in the rolling 365-day window, disclosed by 3 distinct insiders. Most recent filing: Aug 28, 2026.

Question 2

When was the most recent SEC Form 4 filing for BOLD?

Accepted Answer

The most recent Form 4 filing for BOLD on Tracefour is dated Aug 28, 2026.

Question 3

Who is the most active insider at BOLD?

Accepted Answer

The most active SEC Form 4 filer at BOLD in the rolling window is 10% Owner TANG KEVIN, with 19 filings.

Question 4

What is the net insider flow at BOLD over the last 6 months?

Accepted Answer

Over the trailing 180 days, insiders at BOLD have net bought $1.4M based on SEC Form 4 disclosures.

Question 5

What is the total insider buy and sell value at BOLD in the current window?

Accepted Answer

Inside the rolling window, insiders at BOLD bought $1.5M and sold $134K based on SEC Form 4 filings.

Question 6

Can I get alerts for BOLD insider trading?

Accepted Answer

Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Boundless Bio, Inc. (BOLD). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.

						Source
TANG KEVIN	10% Owner	Sale	18,300	$54K	Aug 28	SEC ↗
TANG KEVIN	10% Owner	Purchase	265	$647	Jul 21	SEC ↗
TANG KEVIN	10% Owner	Purchase	1,623	$4K	Jul 21	SEC ↗
TANG KEVIN	10% Owner	Purchase	2,975	$7K	Jul 21	SEC ↗
TANG KEVIN	10% Owner	Purchase	43,878	$107K	Jul 17	SEC ↗
TANG KEVIN	10% Owner	Purchase	1,600	$4K	Jul 17	SEC ↗
TANG KEVIN	10% Owner	Purchase	18,491	$45K	Jul 17	SEC ↗
TANG KEVIN	10% Owner	Purchase	7	$17	Jul 13	SEC ↗
TANG KEVIN	10% Owner	Purchase	43,367	$105K	Jul 13	SEC ↗
TANG KEVIN	10% Owner	Purchase	48,211	$117K	Jul 13	SEC ↗
TANG KEVIN	10% Owner	Purchase	27,062	$67K	Jul 9	SEC ↗
TANG KEVIN	10% Owner	Purchase	15,810	$39K	Jul 9	SEC ↗
TANG KEVIN	10% Owner	Purchase	14,338	$35K	Jul 9	SEC ↗
CRANDELL KEITHFirst filing	10% Owner	Sale	16,000	$40K	Jul 6	SEC ↗
ARCH Venture Fund IX, L.P.First filing	10% Owner	Sale	16,000	$40K	Jul 6	SEC ↗
TANG KEVIN	10% Owner	Purchase	26,030	$66K	Jul 2	SEC ↗
TANG KEVIN	10% Owner	Purchase	71,612	$178K	Jul 2	SEC ↗
TANG KEVIN	10% Owner	Purchase	9,821	$24K	Jul 2	SEC ↗
TANG KEVIN	10% Owner	Purchase	146,390	$363K	Jun 29	SEC ↗
TANG KEVIN	10% Owner	Purchase	75,181	$192K	Jun 29	SEC ↗
TANG KEVIN	10% Owner	Purchase	64,762	$160K	Jun 29	SEC ↗

BOLD

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