Company: WTFCN
Filing Date: 2025-05-22
Form Type: S-8
Source: 0001104659-25-052025
Chunk: 1

Company: WINTRUST FINANCIAL CORP
Filing Date: 2025-05-22
Form: S-8
Chunk 1
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 Rule 428 under the Securities Act of 1933, as amended (the “Securities Act”). This Registration Statement on Form S-8
is filed by Wintrust Financial Corporation (the “Registrant”) regarding the Wintrust Financial Corporation 2025 Stock Incentive
Plan (the “Plan”). Documents containing the information required by Part I of the Registration Statement will be sent
or given to Plan participants as specified by Rule 428(b)(1) under the Securities Act.

<div align='center'>PART II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</div>

Item 3. Incorporation of Documents by Reference.

The Registrant hereby incorporates
by reference in this Registration Statement the following documents and information previously filed with the Securities and Exchange
Commission (the “Commission”):

All documents subsequently filed by the Registrant
with the Commission pursuant to Sections 13(a), 13(c), 14, and 15(d) of the Exchange Act prior to the filing of a post-effective
amendment to this Registration Statement, which indicates that all securities offered hereby have been sold or which deregisters all securities
then remaining unsold, shall be deemed to be incorporated by reference into this Registration Statement and to be a part hereof from the
respective dates of filing of such documents (such documents, and the documents enumerated above, being hereinafter referred to as “Incorporated
Documents”).

Any statement contained herein or in an Incorporated
Document shall be deemed to be modified or superseded for purposes of this Registration Statement or the related prospectus to the extent
that a statement contained herein or in any subsequently filed Incorporated Document modifies or supersedes such statement. Any such statement
so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.

Notwithstanding the foregoing, unless specifically
stated to the contrary, none of the information disclosed by the Registrant under Items 2.02 or 7.01 of any Current Report on Form 8-K,
including the related exhibits under Item 9.01, that the Registrant may from time to time furnish to the Commission will be incorporated
by reference into, or otherwise included in, this Registration Statement.

Item 4. Description of Securities.

Not applicable.

Item 5. Interests of Named Experts and Counsel.

The legality of the securities being registered
hereby has been passed on by Kathleen M, Boege, the Registrant’s Executive Vice