Form4insider filings, from the source

Insider · CIK 0001666306

ARCH Venture Fund IX, L.P.

Files at: BOLD, GOSS. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $40k · 1net −$40k
$10k$10k$100k$100k$1M$1MbuyssalesJun 30Jun 30Jun 30Jul 1Jul 1Jul 1Jul 2

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Jul 1, 2026 SForm 4 →Jul 6, 5:43 pm EDTBoundless Bio, Inc.BOLD16,000$2.49$39,8400−100%
Jul 1, 2026 MForm 4 →Jul 6, 5:43 pm EDTBoundless Bio, Inc.BOLD16,000$1.03$16,48016,000—

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Jul 1, 2026 MForm 4 →Jul 6, 5:43 pm EDTBoundless Bio, Inc.BOLD16,000——0—