Attached files

file filename
EX-32.2 - EX-32.2 - G1 Therapeutics, Inc.gthx-ex322_7.htm
EX-31.2 - EX-31.2 - G1 Therapeutics, Inc.gthx-ex312_9.htm
EX-31.1 - EX-31.1 - G1 Therapeutics, Inc.gthx-ex311_10.htm
EX-23.1 - EX-23.1 - G1 Therapeutics, Inc.gthx-ex231_8.htm
EX-4.2 - EX-4.2 - G1 Therapeutics, Inc.gthx-ex42_212.htm
10-K - GTHX-10K-2019 - G1 Therapeutics, Inc.gthx-10k_20191231.htm

 

Exhibit 32.1

CERTIFICATION UNDER SECTION 906

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), the undersigned officer of G1 Therapeutics, Inc., a Delaware corporation (the “Company”), does hereby certify, to such officer’s knowledge, that:

The Annual Report for the year ended December 31, 2019 (the “Form 10-K”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and the information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of the Company.

 

Date: February 26, 2020

 

/s/ Mark A. Velleca, M.D., Ph.D.

 

 

Mark A. Velleca, M.D., Ph.D.

 

 

President and Chief Executive Officer

 

 

(Principal Executive Officer)