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© 2026 InsiderTradingScreener.com. Data from SEC EDGAR Form 4 filings.For informational purposes only. Not financial advice.

Home/Companies/Boundless Bio, Inc.

Boundless Bio, Inc.

37 insider trades tracked

BOLD

Insider trades

37

Bought (open market)

$1.5M

Sold (open market)

$80K

Unique insiders

13

12-month activity

Monthly insider buy vs sell totals for Boundless Bio, Inc..

BuysSells

Recent insider trades

Most recent Form 4 filings for Boundless Bio, Inc..

TANG KEVINbought2,975 shares ofBOLDat $2.44$7KJul 21Details
TANG KEVINbought1,623 shares ofBOLDat $2.44$4KJul 21Details
TANG KEVINbought265 shares ofBOLDat $2.44$647Jul 21Details
TANG KEVINbought18,491 shares ofBOLD

Insiders at this company

Executives and directors who have filed Form 4s.

TANG KEVIN22 trades
Christensen James2 trades
CRANDELL KEITH2 trades
ARCH Venture Fund IX, L.P.2 trades
Brennan Christine1 trades
HINKLE DAVID A1 trades
Hornby Zachary1 trades
Hassig Christian1 trades

Explore insider screeners

Latest CEO & CFO Purchases Latest CEO & CFO Sales Director Purchases Officer Purchases Top Purchases This Week Top Sales This Week Top Officer Buys (Month)10% Owner Filings 10b5-1 Planned Trades Discretionary Trades Buy/Sell Ratios Politician–Insider Overlap

at $2.44

$45KJul 16Details

TANG KEVINbought1,600 shares ofBOLDat $2.44$4KJul 16Details

TANG KEVINbought43,878 shares ofBOLDat $2.43$107KJul 16Details

TANG KEVINbought48,211 shares ofBOLDat $2.42$117KJul 13Details

TANG KEVINbought43,367 shares ofBOLDat $2.43$105KJul 13Details

TANG KEVINbought7 shares ofBOLDat $2.48$17Jul 13Details

TANG KEVINbought14,338 shares ofBOLDat $2.46$35KJul 8Details

TANG KEVINbought15,810 shares ofBOLDat $2.48$39KJul 8Details

TANG KEVINbought27,062 shares ofBOLDat $2.49$67KJul 8Details

TANG KEVINbought9,821 shares ofBOLDat $2.49$24KJul 2Details

ARCH Venture Fund IX, L.P.sold16,000 shares ofBOLDat $2.49$40KJul 6Details

ARCH Venture Fund IX, L.P.exercised16,000 shares ofBOLDat $1.03$16KJul 6Details

CRANDELL KEITHsold16,000 shares ofBOLDat $2.49$40KJul 6Details

CRANDELL KEITHexercised16,000 shares ofBOLDat $1.03$16KJul 6Details

TANG KEVINbought71,612 shares ofBOLDat $2.49$178KJul 2Details

TANG KEVINbought100 shares ofBOLDat $2.5$250Jul 2Details

TANG KEVINbought25,930 shares ofBOLDat $2.54$66KJul 2Details

TANG KEVINbought777 shares ofBOLDat $2.48$2KJun 29Details

TANG KEVINbought63,985 shares ofBOLDat $2.47$158KJun 29Details

TANG KEVINbought134 shares ofBOLDat $2.54$340Jun 29Details

TANG KEVINbought75,047 shares ofBOLDat $2.55$191KJun 29Details

TANG KEVINbought510 shares ofBOLDat $2.56$1KJun 29Details

TANG KEVINbought145,880 shares ofBOLDat $2.48$362KJun 29Details

Whiting Nancygranted32,000 shares ofBOLDat $0Jun 15Details

Christensen Jamesgranted32,000 shares ofBOLDat $0Jun 15Details

Lew Jennifergranted32,000 shares ofBOLDat $0Jun 15Details

Lim Jonathan Egranted48,000 shares ofBOLDat $0Jun 15Details

View all trades for BOLD →

Oien Jessica

1 trades

Doebele Robert1 trades

Lim Jonathan E1 trades

Lew Jennifer1 trades

Whiting Nancy1 trades

Boundless Bio, Inc. (BOLD) — Insider Trading Activity | Insider Trading Screener