MDU Resources Group Inc Human Resources Contracts & Agreements

Restricted Stock Unit Award Agreement under the Long-Term Performance-Based Incentive Plan, as amended February 16, 2023 (Filed With SEC on February 24, 2023)

MDU Resources Group, Inc. 401(k) Retirement Plan, as amended December 28, 2022 (Filed With SEC on February 24, 2023)

Retention Agreement for Jeffrey S. Thiede, dated February 17, 2023 (Filed With SEC on February 24, 2023)

MDU Resources Group, Inc. Director Compensation Policy, as amended May 11, 2022 (Filed With SEC on August 5, 2022)

Form of Performance Share Award Agreement under the Long-Term Performance-Based Incentive Plan, as amended February 17, 2022 (Filed With SEC on February 23, 2022)

Restricted Stock Unit Award Agreement under the Long-Term Performance-Based Incentive Plan, as amended February 17, 2022 (Filed With SEC on February 23, 2022)

MDU Resources Group, Inc. 401(k) Retirement Plan, as amended January 1, 2022 (Filed With SEC on February 23, 2022)

MDU Resources Group, Inc. Deferred Compensation Plan (Filed With SEC on November 4, 2021)

MDU Resources Group, Inc. Director Compensation Policy, as amended May 12, 2021 (Filed With SEC on August 5, 2021)

MDU Resources Group, Inc. 401(k) Retirement Plan, as amended January 1, 2021 (Filed With SEC on May 6, 2021)

MDU Resources Group, Inc. Executive Incentive Compensation Plan, as amended November 12, 2020, and Rules and Regulations, as amended November 12, 2020 (Filed With SEC on February 19, 2021)

Form of Performance Share Award Agreement under the Long-Term Performance-Based Incentive Plan, as amended February 11, 2021 (Filed With SEC on February 19, 2021)

Restricted Stock Unit Award Agreement under the Long-Term Performance-Based Incentive Plan, as amended February 11, 2021 (Filed With SEC on February 19, 2021)

Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated December 17, 2020 (Filed With SEC on February 19, 2021)

MDU Resources Group, Inc. Deferred Compensation Plan Adoption Agreement (Filed With SEC on November 12, 2020)

MDU Resources Group, Inc. Deferred Compensation Plan Document (Filed With SEC on November 12, 2020)

MDU Resources Group, Inc. 401(k) Retirement Plan, as restated April 1, 2020 (Filed With SEC on May 8, 2020)

MDU Resources Group, Inc. Executive Incentive Compensation Plan, as amended November 13, 2019, and Rules and Regulations, as amended November 13, 2019 (Filed With SEC on February 21, 2020)

Form of Annual Incentive Award Agreement under the Long-Term Performance-Based Incentive Plan, as amended February 13, 2020 (Filed With SEC on February 21, 2020)

Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated October 15, 2019 (Filed With SEC on February 21, 2020)

Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated August 22, 2019 (Filed With SEC on November 1, 2019)

MDU Resources Group, Inc. Director Compensation Policy, as amended May 8, 2019 (Filed With SEC on August 2, 2019)

Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated April 25, 2018 (Filed With SEC on August 2, 2019)

Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated September 6, 2018 (Filed With SEC on August 2, 2019)

Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated December 20, 2018 (Filed With SEC on August 2, 2019)

Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated March 22, 2019 (Filed With SEC on August 2, 2019)

MDU Resource Group, Inc. Director Compensation Policy, as amended November 15, 2018 (Filed With SEC on February 22, 2019)

Form of Performance Share Award Agreement under the Long-Term Performance-Based Incentive Plan, as amended February 14, 2019 (Filed With SEC on February 22, 2019)

Form of Performance Share Award Agreement under the Long-Term Performance-Based Incentive Plan (Filed With SEC on February 21, 2018)

MDU Resources Group, Inc. 2017 Performance Share Award Opportunity Chart (Filed With SEC on February 21, 2018)

Form of Restricted Stock Unit Agreement under the Long-Term Performance-Based Incentive Plan (Filed With SEC on February 21, 2018)

Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated August 30, 2017 (Filed With SEC on November 3, 2017)

MDU Resources Group, Inc. Director Compensation Policy, as amended May 10, 2017 (Filed With SEC on August 4, 2017)

MDU Resources Group, Inc. Executive Incentive Compensation Plan, as amended May 10, 2017, and Rules and Regulations, as amended May 9, 2017 (Filed With SEC on August 4, 2017)

Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated April 10, 2017 (Filed With SEC on August 4, 2017)

MDU Resources Group, Inc. 401(k) Retirement Plan, as restated as of January 1, 2017 (Filed With SEC on May 8, 2017)

Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated March 31, 2017 (Filed With SEC on May 8, 2017)

INSTRUMENT OF AMENDMENT TO THE MDU RESOURCES GROUP, INC. 401(k) RETIREMENT PLAN (Filed With SEC on February 24, 2017)

MDU RESOURCES GROUP, INC. LONG-TERM PERFORMANCE-BASED INCENTIVE PLAN PERFORMANCE SHARE AWARD AGREEMENT February 16, 2017 (Filed With SEC on February 21, 2017)

MDU Resources Group, Inc. 2017 Performance Share Award Opportunity Chart NameTitleThresholdTargetMaximumShares(#)Shares(#)Shares(#)David L. GoodinPresident and Chief Executive... (Filed With SEC on February 21, 2017)