GlobeNewswire Inc | Mar 30, 2021 04:01PM EDT

March 30, 2021

LITTLE ROCK, Ark., March 30, 2021 (GLOBE NEWSWIRE) -- Bank OZK (the Bank) (Nasdaq: OZK) expects to report first quarter 2021 earnings after the market closes on Thursday, April 22, 2021. Managements comments on the first quarter of 2021 will be released simultaneously with the earnings press release and will be available on the Banks investor relations website.

Management will conduct a conference call to take questions at 10:00 a.m. CT (11:00 a.m. ET) on Friday, April 23, 2021. Interested parties may listen to this call by dialing 1-844-818-5110 (U.S. and Canada) or 210-229-8841 (international) and asking for the Bank OZK conference call. A recorded playback of the call will be available for one week following the call at 1-855-859-2056 (U.S. and Canada) or 404-537-3406 (international). The passcode for this playback is 4472527. The call will be available live or in a recorded version on the Banks investor relations website ir.ozk.com under Q1 Earnings Conference Call Webcast.

GENERAL INFORMATIONBank OZK (Nasdaq: OZK) is a regional bank providing innovative financial solutions delivered by expert bankers with a relentless pursuit of excellence. Established in 1903, Bank OZK conducts banking operations through more than 250 offices in eight states including Arkansas, Georgia, Florida, North Carolina, Texas, New York, California and Mississippi and had $27.16 billion in total assets as of December 31, 2020. Bank OZK can be found atwww.ozk.comand onFacebook,TwitterandLinkedInor contacted at (501) 978-2265 or P.O. Box 8811, Little Rock, Arkansas 72231-8811.

The Bank files annual, quarterly and current reports, proxy materials, and other information required by the Securities Exchange Act of 1934 with the Federal Deposit Insurance Corporation (FDIC), copies of which are available electronically at the FDICs website at https://efr.fdic.gov/fcxweb/efr/index.htmland are also available on the Banks investor relations website atir.ozk.com. To receive automated email alerts for these materials please visit https://ir.ozk.com/other/email-notification/default.aspxto sign up.

Investor Relations Contact: Tim Hicks, (501) 978-2336Media Contact: Susan Blair, (501) 978-2217