UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Non-accelerated Filer ☐ Smaller Reporting Company ☐ Emerging Growth Company ☐ Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 1-6686 THEINTERPUBLIC GROUP OF COMPANIES, INC. (Exact name of registrant as specified in its chart ...