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ARCH Venture Fund IX, L.P.

SEC insider (Form 3/4/5 filer). CIK 0001666306. 10% Owner at Boundless Bio, Inc. (BOLD). 2 reported Form 4/5 transactions since Sep 2024; latest on Jul 1, 2026. Located in CHICAGO, IL.

Companies ARCH Venture Fund IX, L.P. has filed insider reports for

  • Boundless Bio, Inc. (BOLD): 10% Owner
ARCH Venture Fund IX, L.P. profile photo

ARCH Venture Fund IX, L.P.

CIK: 0001666306

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)1 (50.0%)

Position reduction

Option Exercises (M)1 (50.0%)

Derivative conversions

Awards (A)0 (0.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

Boundless Bio, Inc. logo
BOLD

Boundless Bio, Inc.

10% Owner

Discretionary Trading P&L

Holdings

Transaction History (2 total)

  • Boundless Bio, Inc. logo
    BOLD

    Boundless Bio, Inc.

    Jul 1, 2026
    Exercise
    Indirect
    16K shares at avg. $1.03$16K
  • Boundless Bio, Inc. logo
    BOLD

    Boundless Bio, Inc.

    Jul 1, 2026
    Sale
    Indirect
    16K shares at avg. $2.49$40K

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