SCHEDULE 13G/A

Lyell Immunopharma Inc

Common Stock, par value $0.0001 · CUSIP: 55083R203

Event date: 2025-09-30

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

• Foresite Capital Fund IV, L.P.

  Shares: 800,339.00 · Class: 4.2%

• Foresite Capital Management IV, LLC

  Shares: 800,339.00 · Class: 4.2%

• Foresite Capital Fund V, L.P.

  Shares: 477,078.00 · Class: 2.5%

• Foresite Capital Management V, LLC

  Shares: 477,078.00 · Class: 2.5%

• Foresite Capital Opportunity Fund V, L.P.

  Shares: 177,199.00 · Class: 0.9%

• Foresite Capital Opportunity Management V, LLC

  Shares: 177,199.00 · Class: 0.9%

• James B. Tananbaum

  Shares: 1,454,616.00 · Class: 7.6%

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