Prospectus Certification by Investment Company (Form 497J)

December 22, 2025

VIA EDGAR

Securities and Exchange Commission
100 F Street, NE
Washington, DC 20549

Re: Short-Term Investments Trust
CIK 0000205007

1933 Act Registration No. 002-58287
1940 Act Registration No. 811-02729

Ladies and Gentlemen:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended ("1933 Act"), the undersigned certifies on behalf of Short-Term Investments Trust (the "Fund") that the Prospectus and the Statement of Additional Information relating to the Cash Management Class, CAVU Securities Class, Corporate Class, Institutional Class, Personal Investment Class, Premier Class, Private Investment Class, Reserve Class and Resource Class shares, as applicable, of:

Invesco Treasury Portfolio, Invesco Government & Agency Portfolio and Invesco Treasury Obligations Portfolio

that would have been filed under Rule 497(c) under the 1933 Act do not differ from the documents in Post-Effective Amendment No. 98 to the Fund's Registration Statement on Form N-1A, which was filed electronically with the Securities and Exchange Commission on December 18, 2025.

Please send copies of all correspondence with respect to the Amendment to the undersigned, or contact me at (212) 323-5231 or [email protected]. 

Very truly yours,

/s/ Adrienne Ruffle

Adrienne Ruffle Associate General Counsel