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Home/Companies/Boundless Bio, Inc.

Boundless Bio, Inc.

46 insider trades tracked

BOLD
Insider trades
46
Bought (open market)
$1.9M
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
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
October 2026$427K$08
November 2026$0$00

Recent insider trades

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

  • TANG KEVINbought10,707 shares ofBOLDat $2.4$26KOct 27 · filed Oct 29Details
  • TANG KEVINbought9,606 shares ofBOLDat $2.38$23KOct 26Details
  • TANG KEVINbought6,234 shares ofBOLDat $2.38$15KOct 23 · filed Oct 26Details

Insiders at this company

Executives and directors who have filed Form 4s.

  • TANG KEVIN31 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 KEVINbought5,800 shares ofBOLDat $2.4$14KOct 22 · filed Oct 26Details
  • TANG KEVINbought220 shares ofBOLDat $2.37$521Oct 20Details
  • TANG KEVINbought18,279 shares ofBOLDat $2.33$43KOct 19 · filed Oct 20Details
  • TANG KEVINbought12,790 shares ofBOLDat $2.34$30KOct 19 · filed Oct 20Details
  • TANG KEVINbought118,185 shares ofBOLDat $2.34$277KOct 16 · filed Oct 20Details
  • 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
  • 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
  • View all trades for BOLD →
    Oien Jessica
    1 trades
  • Doebele Robert1 trades
  • Lim Jonathan E1 trades
  • Lew Jennifer1 trades
  • Whiting Nancy1 trades