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 Commission File Number: 0-25965 j2 GLOBAL, INC. (Exact name of registrant as specified in its charter) (State or other jurisdiction (I.R.S. Employer of incorporation or organization) Identification No.) 6922 Hollywood Boulevard, Suite 500 Los Angeles, California 90028 For the quarterly period ended June 30, 2019 OR ☐TRANSITION REPORT PURSU ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 OR o 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: 0-25965 j2 GLOBAL, INC. (Exact name of registrant as specified in its charter) Delaware 47-1053457 (State or other juris ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR o 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: 0-25965 j2 GLOBAL, INC. (Exact name of registrant as specified in its charter) Delaware 47-1053457 (State or other jurisdiction of incorporation or ...