UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant  ☒                            Filed by a Party other than the Registrant  ☐

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☐	Preliminary Proxy Statement
☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐	Definitive Proxy Statement
☒	Definitive Additional Materials
☐	Soliciting Material Pursuant to § 240.14a-11(c) or § 240.14a-12

AIM Counselor Series Trust (Invesco Counselor Series Trust)

AIM Equity Funds (Invesco Equity Funds)

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AIM International Mutual Funds (Invesco International Mutual Funds)

AIM Investment Funds (Invesco Investment Funds)

AIM Investment Securities Funds (Invesco Investment Securities Funds)

AIM Sector Funds (Invesco Sector Funds)

AIM Tax-Exempt Funds (Invesco Tax-Exempt Funds)

AIM Treasurer’s Series Trust (Invesco Treasurer’s Series Trust)

Invesco Exchange Fund

Invesco Management Trust

Short-Term Investments Trust

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You may have already received these proxy materials via email, but according to our records you should have received them in hard copy. If you have already voted, thank you. You do not need to take any further action. If you have not submitted your vote, please do so by following the instructions on the enclosed proxy card.