ASPE · 10% owners buy $19M stock

Two 10% owner funds of Aspen Neuroscience made open-market purchases totaling $19M at $15/share on November 2, 2026, while the Executive Chair and a director converted derivative securities at $0 (non-cash). The $18M purchase by ARCH Venture Partners XIV represents a material insider vote of confidence, but the non-cash conversions by other insiders are neutral.

• ARCH Venture Fund X, L.P. purchased 66.7K shares at $15 for $1M on 2026-11-02 (open-market, no 10b5-1 plan)
• ARCH Venture Partners XIV, L.P. purchased 1.20M shares at $15 for $18M on 2026-11-02 (open-market, no 10b5-1 plan)
• Total open-market purchases by 10% owners: $19M
• Director Spaventa Andrew converted 500,830 shares of derivatives at $0 (non-cash) on 2026-11-02