Form 485BXT SHORT-TERM INVESTMENTS

September 21, 2026 5:11 PM EDT
As Filed with the United States Securities and Exchange Commission on September 21, 2026.
1933 Act Registration No. 002-58287
1940 Act Registration No. 811-02729

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM N-1A
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
Pre-Effective Amendment No.
Post-Effective Amendment No. 106
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
Amendment No. 107

SHORT-TERM INVESTMENTS TRUST
(Exact Name of Registrant as Specified in Charter)

11 Greenway Plaza, Houston, TX 77046-1173
(Address of Principal Executive Office)
Registrant’s Telephone Number, including Area Code: (713) 626-1919
Melanie Ringold, Esquire
11 Greenway Plaza, Houston, TX 77046
(Name and Address of Agent for Service)

Copy to:
Adrienne Ruffle, Esquire
Invesco Advisers, Inc.
225 Liberty Street, 15th FL
New York, NY 10281-1087
Matthew R. DiClemente, Esquire
Mena M. Larmour, Esquire
Stradley Ronon Stevens & Young, LLP
2005 Market Street, Suite 2600
Philadelphia, Pennsylvania 19103-7018

Approximate Date of Proposed Public Offering: As soon as practicable after the effective date of this Amendment.
It is proposed that this filing will become effective (check appropriate box)
_
immediately upon filing pursuant to paragraph (b)
X
on October 22, 2026 pursuant to paragraph (b)
_
60 days after filing pursuant to paragraph (a)
 
on (date) pursuant to paragraph (a)
_
75 days after filing pursuant to paragraph (a)(2)
_
on (date) pursuant to paragraph (a)(2) of rule 485
If appropriate, check the following box:
X
This post-effective amendment designates a new effective date for a previously filed post-effective amendment.
This post-effective amendment relates only to the Invesco Stablecoin Reserves Onchain Fund series of the Registrant (the “Fund”) as described in the Explanatory Note below. No information relating to the Registrant’s other series is amended or superseded hereby.
EXPLANATORY NOTE
Post-Effective Amendment No. 105 to the Registrant’s Registration Statement under the Securities Act of 1933, as amended (the “Securities Act”) (Amendment No. 106 under the Investment Company Act of 1940, as amended (the “Investment Company Act”)) (“PEA No. 105”), was filed with the U.S. Securities and Exchange Commission via the EDGAR system pursuant to Rule 485(a)(2) under the Securities Act on July 9, 2026, EDGAR Accession No. 0002071844-26-000768, relating to Invesco Stablecoin Reserves Onchain Fund (the “Fund”).

Pursuant to Rule 485(b)(1)(iii) under the Securities Act, this Post-Effective Amendment No. 106 to the Registrant’s Registration Statement under the Securities Act (Amendment No. 107 under the Investment Company Act) (“PEA No. 106”) is being filed solely for the purpose of designating October 22, 2026, as the new effective date for PEA No. 105.
The Prospectus and Statement of Additional Information for the Fund included in PEA No. 105 are incorporated by reference into this PEA No. 106.
The Part C of the Registrant’s Registration Statement included in Post-Effective Amendment No. 105 to the Registrant’s Registration Statement under the Securities Act (Amendment No. 106 under the Investment Company Act), filed on July 9, 2026, EDGAR Accession No. 0002071844-26-000768, is incorporated by reference into this PEA No. 106.

SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement under Rule 485(b) under the Securities Act of 1933, as amended, and has duly caused this Amendment to its Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the city of Houston, Texas, on the 21st day of September, 2026.
SHORT-TERM INVESTMENTS TRUST
By:
/s/ Glenn Brightman
 
(Glenn Brightman)
Title:
President
Pursuant to the requirements of the Securities Act of 1933, as amended, this registration statement has been signed below by the following persons in the capacities indicated on the dates indicated.
SIGNATURE
TITLE
DATE
/s/ Glenn Brightman
President
September 21, 2026
(Glenn Brightman)
(Principal Executive Officer)
 
/s/ Beth Ann Brown*
Chair and Trustee
September 21, 2026
(Beth Ann Brown)
 
 
/s/ Carol Deckbar*
Trustee
September 21, 2026
(Carol Deckbar)
 
 
/s/ Cynthia Hostetler*
Trustee
September 21, 2026
(Cynthia Hostetler)
 
 
/s/ Eli Jones*
Trustee
September 21, 2026
(Eli Jones)
 
 
/s/ Elizabeth Krentzman*
Trustee
September 21, 2026
(Elizabeth Krentzman)
 
 
/s/ Jeffrey H. Kupor*
Trustee
September 21, 2026
(Jeffrey H. Kupor)
 
 
/s/ Anthony J. LaCava, Jr.*
Trustee
September 21, 2026
(Anthony J. LaCava, Jr.)
 
 
/s/ James Liddy*
Trustee
September 21, 2026
(James Liddy)
 
 
/s/ Edward Perkin*
Trustee
September 21, 2026
(Edward Perkin)
 
 
/s/ Douglas Sharp*
Trustee
September 21, 2026
(Douglas Sharp)
 
 
/s/ Daniel S. Vandivort*
Trustee
September 21, 2026
(Daniel S. Vandivort)
 
 
 
 
 
/s/ Adrien Deberghes
Senior Vice President &
September 21, 2026
(Adrien Deberghes)
Treasurer
(Principal Financial Officer)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 



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