Boundless Bio, Inc. (BOLD) Insider Ownership

Historic Insider Ownership Trends

Over the 90-day window ending February 07, 2026, Boundless Bio's three dominant insider ownership positions are held by TenPercentOwner Venture Fund Ix, L.P. Arch (1.18Mn shares), TenPercentOwner Keith Crandell (1.18Mn shares), Director Kristina Burow (1.18Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Keith Crandell 1,181,766 04 Apr, 2024
Kristina Burow 1,181,766 04 Apr, 2024
Venture Fund Ix, L.P. Arch 1,181,766 04 Apr, 2024
Biomedical Innovation Master Investors (Cayman) I L.P. Wellington 556,233 02 Apr, 2024
Jonathan E Lim 550,915 04 Apr, 2024
Capital Management, L.P. Ra 295,844 04 Apr, 2024

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
02 Apr, 2024 Keith Crandell Common Stock A 66,667 $16.00 683,759 I P
02 Apr, 2024 Keith Crandell Common Stock A 133,333 $16.00 1,181,766 I P
02 Apr, 2024 Keith Crandell Common Stock A 787,545 - 828,570 I C
02 Apr, 2024 Keith Crandell Common Stock A 1,048,433 - 1,048,433 I C
02 Apr, 2024 Keith Crandell Common Stock A 589,743 - 617,092 I C
02 Apr, 2024 Jonathan E Lim Common Stock A 525,274 - 550,915 I C
02 Apr, 2024 Capital Management, L.P. Ra Common Stock A 15,625 $16.00 295,844 I P
02 Apr, 2024 Capital Management, L.P. Ra Common Stock A 1,587,912 - 1,587,912 I C
02 Apr, 2024 Capital Management, L.P. Ra Common Stock A 280,219 - 280,219 I C
02 Apr, 2024 Capital Management, L.P. Ra Common Stock A 296,875 $16.00 1,884,787 I P
02 Apr, 2024 Kristina Burow Common Stock A 589,743 - 617,092 I C
02 Apr, 2024 Kristina Burow Common Stock A 133,333 $16.00 1,181,766 I P
02 Apr, 2024 Kristina Burow Common Stock A 66,667 $16.00 683,759 I P
02 Apr, 2024 Kristina Burow Common Stock A 787,545 - 828,570 I C
02 Apr, 2024 Kristina Burow Common Stock A 1,048,433 - 1,048,433 I C
02 Apr, 2024 Venture Fund Ix, L.P. Arch Common Stock A 133,333 $16.00 1,181,766 I P
02 Apr, 2024 Venture Fund Ix, L.P. Arch Common Stock A 589,743 - 617,092 I C
02 Apr, 2024 Venture Fund Ix, L.P. Arch Common Stock A 1,048,433 - 1,048,433 I C
02 Apr, 2024 Venture Fund Ix, L.P. Arch Common Stock A 66,667 $16.00 683,759 I P
02 Apr, 2024 Venture Fund Ix, L.P. Arch Common Stock A 787,545 - 828,570 I C