SCHEDULE 13G

Aspen Neuroscience, Inc.

Common Stock, par value $0.0001 per share · CUSIP: 044933109

Event date: 2026-11-02

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Frazier Life Sciences X, L.P.

  Shares: 1,674,321.00 · Class: 5.8%

• FHMLS X, L.P.

  Shares: 1,674,321.00 · Class: 5.8%

• FHMLS X, L.L.C.

  Shares: 1,674,321.00 · Class: 5.8%

• James N. Topper

  Shares: 1,674,321.00 · Class: 5.8%

• Patrick J. Heron

  Shares: 1,674,321.00 · Class: 5.8%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.