Results

Fidelity Summer Street Trust

11/30/2021 | Press release | Distributed by Public on 11/30/2021 11:36

Prospectus Certification by Investment Company (Form 497J)

245 Summer Street

Fidelity® Investments

Boston, MA 02210

November 30, 2021

U.S. Securities & Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Attention: File Room

RE:

Fidelity Summer Street Trust (the trust): File Nos. 002-58542 and 811-02737

Fidelity Series Floating Rate High Income Fund

(the fund(s))

________________________________________________________________________

Ladies and Gentlemen:

Transmitted herewith pursuant to Rule 497(j) under the Securities Act of 1933 is certification that the Prospectus(es) and Statement(s) of Additional Information with respect to the above referenced fund(s) do not differ from those filed in the most recent post-effective amendment, which was filed electronically.

Very truly yours,

/s/Cynthia Lo Bessette

Cynthia Lo Bessette

Secretary of the Trust