United States Securities and Exchange Commission Washington, D.C. 20549 Form 10-Q ☑ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended September 30, 2023 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from _____ to _____ Commission File Number 1-13145 Jones Lang LaSalle Incorporated (Exact name of registrant as specified in its charter) Maryland 36-4150422 (State or ot ...