Gridsum to Hold Annual General Meeting on October 28, 2019

BEIJING,Sept. 27,2019 -- Gridsum Holding Inc. ("Gridsum" or the "Company") (NASDAQ: GSUM),a leading provider of cloud-based big-data analytics and artificial intelligence ("AI") solutions in China,today announced that it will hold its 2019 annual general meeting of shareholders at the offices of the Company at 1/F,South Wing,High Technology Building,No. 229 North 4th Ring Road,Haidian District,Beijing 100083,People's Republic of China on October 28,2019 at 8:00 a.m.,Beijing Time.

No proposal will be submitted for shareholder approval at the annual general meeting. Instead,the annual general meeting will serve as an open forum for shareholders of record and beneficial owners of the Company's American depositary shares ("ADSs") to discuss Company affairs with management.

The Board of Directors of the Company has fixed the close of business on September 30,2019 as the record date (the "Record Date") for determining the shareholders entitled to receive notice of the annual general meeting or any adjournment or postponement thereof.

Holders of record of the Company's Class A and Class B ordinary shares at the close of business on the Record Date are entitled to attend the annual general meeting and any adjournment or postponement thereof in person. Beneficial owners of the Company's ADSs are welcome to attend the annual general meeting in person.

The Company has filed its annual report on Form 20-F for the fiscal year ended December 31,2018 with the Securities and Exchange Commission ("SEC") on April 24,2019. The annual report can be accessed on the Company's investor relations website at http://ir.gridsum.com as well as the SEC's website at http://www.sec.gov. The Company will provide a hard copy of its annual report containing the audited consolidated financial statements,free of charge,to its shareholders and ADS holders upon request. Requests should be directed to the Company by writing to Investor Relations,Gridsum Holding Inc.,People's Republic of China,or by email to ir@gridsum.com.

AboutGridsum

Gridsum Holding Inc. (NASDAQ: GSUM) is a leading provider of cloud-based big-data analytics and AI solutions for multinational and domestic enterprises and government agencies in China. Gridsum's core technology,the Gridsum Big Data Platform and the Gridsum Prophet: Enterprise AI Engine,is built on a distributed computing framework and performs real-time multi-dimensional correlation analysis of both structured and unstructured data. This enables Gridsum's customers to identify complex relationships within their data and gain new insights that help them make better business decisions. The Company is named "Gridsum" to symbolize the combination of distributed computing (Grid) and analytics (sum). As a digital intelligence pioneer,the Company's mission is to help enterprises and government organizations in China use data in new and powerful ways to make better-informed decisions and be more productive.

For more information,please visithttp://www.gridsum.com/.

Investor Relations

Gridsum

ir@gridsum.com

Christensen

InChina

Mr.Christian Arnell

Phone: +86-10-5900-1548

Email:carnell@christensenir.com

In U.S.

Mr. Tip Fleming

Phone: +1 917 412 3333

Email:tfleming@christensenir.com

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