General Mills (GIS) 10-Q 2022 Q2 Quarterly report

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Exhibit 32.1

I,JeffreyL.Harmening,ChiefExecutiveOfficerofGeneralMills,Inc.(the“Company”),certify,pursuanttoSection906ofthe

Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

(1)theQuarterlyReportonForm10-QoftheCompanyforthefiscalquarterendedNovember28,2021(the“Report”)fully

complies with the requirements of Section 13(a) or 15(d) of the Securities ExchangeAct of 1934; and

(2)the informationcontained inthe Reportfairly presents,in allmaterial respects,the financialcondition andresults ofoperations

of the Company.

Dated: December 21, 2021

/s/ Jeffrey L. Harmening

Jeffrey L. Harmening

Chief Executive Officer