Supplement to the

Fidelity® Total Bond K6 Fund

October 30, 2023

Summary Prospectus

The following information supplements information found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Benjamin Harrison (Co-Portfolio Manager) has managed the fund since 2024.

TBDK6-SUSTK-0524-100 1.9916331.100 May 1, 2024