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Home/Companies/Boundless Bio, Inc.

Boundless Bio, Inc.

38 insider trades tracked

BOLD
Insider trades
38
Bought (open market)
$1.5M
Sold (open market)
$134K
Unique insiders
13

12-month activity

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

BuysSellsFilings with no price (gifts, grants)
Show data table
MonthBuysSellsFilings
October 2025$0$00
November 2025$0$00
December 2025$0$00
January 2026$0$05
February 2026$0$00
March 2026$0$00
April 2026$0$00
May 2026$0$00
June 2026$781K$012
July 2026$734K$80K18
August 2026$0$54K1
September 2026$0$00

Recent insider trades

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

  • TANG KEVINsold18,300 shares ofBOLDat $2.97$54KAug 26 · filed Aug 28Details
  • TANG KEVINbought2,975 shares ofBOLDat $2.44$7KJul 21Details
  • TANG KEVINbought1,623 shares ofBOLDat $2.44$4KJul 20 · filed Jul 21Details

Insiders at this company

Executives and directors who have filed Form 4s.

  • TANG KEVIN23 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 PurchasesLatest CEO & CFO SalesDirector PurchasesOfficer PurchasesTop Purchases This WeekTop Sales This WeekTop Officer Buys (Month)10% Owner Filings10b5-1 Planned TradesDiscretionary TradesBuy/Sell RatiosPolitician-Insider Overlap
  • TANG KEVINbought265 shares ofBOLDat $2.44$647Jul 17 · filed Jul 21Details
  • TANG KEVINbought18,491 shares ofBOLDat $2.44$45KJul 16Details
  • TANG KEVINbought1,600 shares ofBOLDat $2.44$4KJul 15 · filed Jul 16Details
  • TANG KEVINbought43,878 shares ofBOLDat $2.43$107KJul 14 · filed Jul 16Details
  • TANG KEVINbought48,211 shares ofBOLDat $2.42$117KJul 13Details
  • TANG KEVINbought43,367 shares ofBOLDat $2.43$105KJul 10 · filed Jul 13Details
  • TANG KEVINbought7 shares ofBOLDat $2.48$17Jul 9 · filed Jul 13Details
  • TANG KEVINbought14,338 shares ofBOLDat $2.46$35KJul 8Details
  • TANG KEVINbought15,810 shares ofBOLDat $2.48$39KJul 7 · filed Jul 8Details
  • TANG KEVINbought27,062 shares ofBOLDat $2.49$67KJul 6 · filed Jul 8Details
  • TANG KEVINbought9,821 shares ofBOLDat $2.49$24KJul 2Details
  • ARCH Venture Fund IX, L.P.sold16,000 shares ofBOLDat $2.49$40KJul 1 · filed Jul 6Details
  • ARCH Venture Fund IX, L.P.exercised16,000 shares ofBOLDat $1.03$16KJul 1 · filed Jul 6Details
  • CRANDELL KEITHsold16,000 shares ofBOLDat $2.49$40KJul 1 · filed Jul 6Details
  • CRANDELL KEITHexercised16,000 shares ofBOLDat $1.03$16KJul 1 · filed Jul 6Details
  • TANG KEVINbought71,612 shares ofBOLDat $2.49$178KJul 1 · filed Jul 2Details
  • TANG KEVINbought100 shares ofBOLDat $2.5$250Jun 30 · filed Jul 2Details
  • TANG KEVINbought25,930 shares ofBOLDat $2.54$66KJun 30 · filed Jul 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 26 · filed Jun 29Details
  • TANG KEVINbought75,047 shares ofBOLDat $2.55$191KJun 26 · filed Jun 29Details
  • TANG KEVINbought510 shares ofBOLDat $2.56$1KJun 25 · filed Jun 29Details
  • TANG KEVINbought145,880 shares ofBOLDat $2.48$362KJun 25 · filed Jun 29Details
  • Whiting Nancygranted32,000 shares ofBOLDat $0Jun 15Details
  • Christensen Jamesgranted32,000 shares ofBOLDat $0Jun 15Details
  • Lew Jennifergranted32,000 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