Summary Plan Description General Mills 401(k) Plan

1 Summary plan Description General Mills 401(k) plan 401(k) + Pension Program January 2022 2540112 Benefits Service Center My Benefits Employees -1-888-200-5555 Other participants -1-877-430-4015 1/2022 TABLE OF CONTENTS Page 4 INTRODUCTION Page 5 ELIGIBILITY and ENROLLMENT My Benefits and the Benefit Service Center Eligibility and Enrollment Transfers Page 8 YOUR CONTRIBUTIONS Your Contributions Rollover Contributions Page 13 COMPANY MATCH and VARIABLE MATCH Company Match Variable Match Vesting Page 17 INVESTMENTS Investment Elections Investment Funds Target Retirement Date Funds Core Funds Company Stock Personal Choice Retirement Account

2 (PCRA) Fund Transfers and Restrictions Qualified Default Investment Alternative (QDIA) Diversification Investment Materials Importance of Fees Page 27 INVESTMENT ADVICE Online Advice Professional Management Page 29 ACCESS TO YOUR ACCOUNT DURING EMPLOYMENT Loans In-Service Withdrawals Restrictions on Your Account 3 Benefits Service Center My Benefits Employees -1-888-200-5555 Other participants -1-877-430-4015 1/2022 Page 37 ACCESS TO YOUR ACCOUNT AFTER TERMINATION, DIVORCE, DISABILITY OR DEATH Distributions Cash-Outs Installments and Partial Distributions Required Minimum Distributions No Sale or Assignment of Interests/QDRO Disability Death/Beneficiaries Page 45 TAXATION Tax Treatment of Distributions Direct Rollover Early Distributions and Tax Penalties Page 49 plan ADMINISTRATION plan Administrator Amendments and Termination Basic Information Claiming Benefits 4 Benefits Service Center My Benefits Employees -1-888-200-5555 Other participants -1-877-430-4015 1/2022 INTRODUCTION This is a Summary of the General Mills 401(k) plan (the plan )

3 For employees who meet the eligibility requirements detailed in the Eligibility and Enrollment section of this document. The General Mills 401(k) plan is a qualified retirement plan and employee stock ownership plan (ESOP). The plan allows you to save for retirement on a tax-favored basis through a combination of contributions you make by payroll deduction and matching contributions made on your behalf by General Mills . The plan gives you the responsibility to invest the contributions in a broad array of investment choices. Tools are available through the plan to assist with your investment choices, including on-line investment advice, investment management, modeling and projection programs, and General investment educational materials.

4 These days retirement can mean very different things to different people. Ultimately, preparing for retirement is your responsibility. The plan is important in terms of helping you accomplish your retirement planning goals. The ability to save on a tax-favored basis has been shown to be a powerful tool toward meeting financial needs during retirement years. You should carefully read this entire document to gain a complete understanding of how the plan works, what your responsibilities are, your investment options, and when you are entitled to receive the funds in your accounts. This is intended to be a Summary and does not contain every detail that is in the plan Document.

5 A Summary cannot deal with every situation. Detailed legal documents control the rights of Participants. If this Summary is inconsistent with those documents in any way, the legal documents will control. Copies of the plan Document are available for you to review. You can obtain copies of the plan Document by contacting the Benefits Service Center. This document constitutes part of a prospectus covering securities that have been registered under the Securities Act of 1933. 5 Benefits Service Center My Benefits Employees -1-888-200-5555 Other participants -1-877-430-4015 1/2022 ELIGIBILITY and ENROLLMENT My Benefits and the Benefits Service Center Eligibility and Enrollment Transfers 6 Benefits Service Center My Benefits Employees -1-888-200-5555 Other participants -1-877-430-4015 1/2022 MY BENEFITS and the BENEFITS SERVICE CENTER My Benefits is a convenient and confidential way to initiate transactions and obtain information about your account.

6 It is generally available 24 hours a day, 7 days a week. You may view and print statements on the website. If you prefer paper statements mailed to your home, you may make that election on the website or by calling the Benefits Service Center. The first time you log on to My Benefits, you will be prompted for personal information to establish your user ID and password. Remember to safeguard and never share your password. The Benefits Service Center allows you an additional way to manage your account by speaking with a Service Center Representative to request information or transactions. Benefits Service Center Via HR Direct for active employees 1-888-200-5555 For other participants - 1-877-430-4015 For International participants - 1-847-883-2631 Service Center Representatives 8:00 6:00 CT weekdays, excluding certain holidays Transactions processed before the close of the New York Stock Exchange, normally 3:00 Central Standard Time weekdays, will receive that day s closing price.

7 My Benefits website 7 Benefits Service Center My Benefits Employees -1-888-200-5555 Other participants -1-877-430-4015 1/2022 ELIGIBILITY AND ENROLLMENT You are eligible for the retirement program described in this Summary if: You are a non-union non-production employee, and You were initially hired or last rehired on and before May 31, 2013, as a regular or casual employee (as classified by General Mills ), and You work at a location that has adopted the plan OR You are a non-union production employee initially hired or last rehired before January 1, 2018, and You are classified by General Mills as a regular or casual employee, and You work at a location that has adopted the plan OR You are a union employee at the Cedar Rapids, IA location hired/rehired on and before January 1, 2018, covered by the collective bargaining agreement between General Mills , Inc.

8 And Retail, Wholesale & Department Store Union, UFCW, Local 110 These individuals become eligible to participate on the date they become permanent regular or casual employees (formerly known as full-time, part-time, short-hour or regular non-scheduled). Employees permanently assigned outside the or employees who are working in the on a non-permanent basis are not eligible for the plan unless specifically identified as eligible to participate in an Appendix to the plan document. Special rules apply to transfer situations; contact the Retirement Service Center at 1-800-767-4955 for more details. You were eligible for the plan on your first day of employment or your first day of eligibility, if later.

9 Automatic Enrollment and Annual Increase Option When you were eligible for the plan , you may have been automatically enrolled. If you took no further action, were automatically enrolled and you have been in the plan for at least 12 months, your contribution rate will automatically increase by 1% each year until it reaches 10%. If you take affirmative action ( , change your contribution rate) contributions will escalate on the next regular escalation date. You will be notified in advance of each increase, and you will have an opportunity to decline or make changes. TRANSFERS If a current employee transfers within the company, his/her retirement program eligibility will be based on the rules of the plan .

10 Call the Retirement Service Center at 1-800-767-4955 for details. 8 Benefits Service Center My Benefits Employees -1-888-200-5555 Other participants -1-877-430-4015 1/2022 YOUR CONTRIBUTIONS Your Contributions Rollover Contributions 9 Benefits Service Center My Benefits Employees -1-888-200-5555 Other participants -1-877-430-4015 1/2022 YOUR CONTRIBUTIONS Earnable Compensation Earnable compensation generally includes base pay, overtime, incentives/bonuses, commissions, vacation and holiday pay, bereavement, jury duty, sick and emergency paid time-off and other payments made as cash compensation for services as noted in the plan .