{"url_path":"/sec/wtfc/8-k/2026-07-20/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-07-20","source_url":"https://www.sec.gov/Archives/edgar/data/1015328/0001015328-26-000019-index.html","accession_number":"0001015328-26-000019","cik":"0001015328","ticker":"WTFC","issuer_name":"WINTRUST FINANCIAL CORP","edgar_url":"https://www.sec.gov/Archives/edgar/data/1015328/0001015328-26-000019-index.html","primary_entity_key":"0001015328","primary_entity_name":"WINTRUST FINANCIAL CORP"},"word_count":314,"has_tables":true,"body_markdown":"wtfc-20260720\n0001015328false00010153282026-07-202026-07-200001015328us-gaap:CommonStockMember2026-07-202026-07-200001015328wtfc:DepositorySharesSeriesFPreferredStockMember2026-07-202026-07-20\n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWashington, D.C. 20549\n\n \n\nFORM 8-K\n\n \n\nCurrent Report\n\nPursuant to Section 13 or 15(d) of The\n\nSecurities Exchange Act of 1934\n\nDate of Report (Date of earliest event reported): July 20, 2026\n\n \n\nWINTRUST FINANCIAL CORPORATION\n\n(Exact name of registrant as specified in its charter)\n\n \n\nIllinois001-35077 36-3873352\n\n(State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer\nIdentification No.)\n\n9700 W. Higgins Road, Suite 800\nRosemontIllinois 60018\n\n(Address of principal executive offices) (Zip Code)\n\nRegistrant’s telephone number, including area code (847) 939-9000\n\nNot Applicable\n\n(Former name or former address, if changed since last year)\n\nCheck the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:\n\n☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\nTitle of Each Class Ticker SymbolName of Each Exchange on Which Registered\n\nCommon Stock, no par value WTFCThe Nasdaq Global Select Market\n\nDepositary Shares, Each Representing a 1/1,000th Interest in a Share of\nWTFCNThe Nasdaq Global Select Market\n\n7.875% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series F, no par value\n\nIndicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).\n\nEmerging growth company     ☐\n\n    \n\n    If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.     ☐"}