| 2025 | Seth Ernst Memorial Soccer Slam | 990EZ | President | 0 | $0 | $0 | View return |
| 2025 | Emaus Firemens Relief Association | 990 | Trustee | 5 | $0 | $0 | View return |
| 2024 | Seth Ernst Memorial Soccer Slam | 990PF | President | 0 | $0 | $0 | View return |
| 2024 | Czech Village New Bohemia Urban Main Street District | 990 | Vice President | 1 | $0 | $0 | View return |
| 2024 | Arcola Volunteer Fire Department Inc. | 990 | Chief Engine | 5 | $0 | $0 | View return |
| 2024 | Mccullom Lake Hunt Club Inc | 990 | President | 2 | $0 | $0 | View return |
| 2024 | Emaus Firemens Relief Association | 990 | Trustee | 5 | $0 | $0 | View return |
| 2024 | Churchill Community Coalition | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2024 | The Executive Association of Savannah Inc | 990EZ | Board Member | 1 | $0 | $0 | View return |
| 2024 | Rural Perry County Fire Protection Association | 990 | Director | 0 | $0 | $0 | View return |
| 2024 | Legal Aid of Nebraska | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Charles and Marie Robertson Foundation C/O Diana Ernst | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2024 | Youthport | 990 | Director | 0.5 | $0 | $0 | View return |
| 2024 | Airconditioning Refrigeration and Mechanical | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | Seth Ernst Memorial Soccer Slam | 990PF | President | 0 | $0 | $0 | View return |
| 2023 | Emaus Firemens Relief Association | 990 | Trustee | 5 | $0 | $0 | View return |
| 2023 | Psych Crisis | 990EZ | Treasurer | 0 | $0 | $0 | View return |
| 2023 | Rural Perry County Fire Protection Association | 990 | Director | 0 | $0 | $0 | View return |
| 2023 | Charles and Marie Robertson Foundation C/O Diana Ernst | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2023 | Legal Aid of Nebraska | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Iowa Farm Bureau Federation | 990 | Director | 0.5 | $0 | $0 | View return |
| 2023 | Arcola Volunteer Fire Department Inc. | 990 | Chief Engine | 5 | $0 | $0 | View return |
| 2023 | Boonville Cemetery Association Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2023 | Churchill Community Coalition | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2023 | Youthport | 990 | Director | 0.5 | $0 | $0 | View return |
| 2022 | Arcola Volunteer Fire Department Inc. | 990 | Chief Engine | 5 | $0 | $0 | View return |
| 2022 | Rural Perry County Fire Protection Association | 990 | Director | 0 | $0 | $0 | View return |
| 2022 | Georgia Highway Contractors | 990 | Board Member | - | $0 | $0 | View return |
| 2022 | Boonville Cemetery Association Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2022 | Charles and Marie Robertson Foundation C/O Diana Ernst | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2022 | Emaus Firemens Relief Association | 990 | Trustee | 5 | $0 | $0 | View return |
| 2022 | Czech Village New Bohemia Urban Main Street District | 990 | Secretary | 1 | $0 | $0 | View return |
| 2022 | Iowa Farm Bureau Federation | 990 | Director (11/22) | 0.5 | $0 | $0 | View return |
| 2022 | Churchill Community Coalition | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2022 | Psych Crisis | 990EZ | Treasurer | 0 | $0 | $0 | View return |
| 2022 | Youthport | 990 | Director | 0.5 | $0 | $0 | View return |
| 2021 | Riverland Energy Cooperative | 990 | Director | 12 | $2,525 | $0 | View return |
| 2021 | Charles and Marie Robertson Foundation C/O Diana Ernst | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2021 | Boonville Cemetery Association Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2021 | Emaus Firemens Relief Association | 990 | Trustee | 3 | $0 | $0 | View return |
| 2021 | Rural Perry County Fire Protection Association | 990 | Director | 0 | $0 | $0 | View return |
| 2021 | Churchill Community Coalition | 990 | Treasurer | 5 | $0 | $0 | View return |
| 2021 | Arcola Volunteer Fire Department Inc. | 990 | Chief Engine | 5 | $0 | $0 | View return |
| 2021 | Maurice Paul and Glennys Brimmer Foundation | 990PF | Vice President | 1 | $0 | $0 | View return |
| 2021 | Emergency Department Practice Management Association | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Youthport | 990EZ | Director | 0.5 | $0 | $0 | View return |
| 2020 | Cognia Inc (Fka Advance Education Inc) | 990 | Former Sr. VP Business Dev | 40 | $245,071 | $0 | View return |
| 2020 | Riverland Energy Cooperative | 990 | Director | 12 | $9,200 | $0 | View return |
| 2020 | Rural Perry County Fire Protection Association | 990 | Director | 0 | $0 | $0 | View return |
| 2020 | Emaus Firemens Relief Association | 990 | Trustee | 2 | $0 | $0 | View return |
| 2020 | Maurice Paul and Glennys Brimmer Foundation | 990PF | Vice President | 1 | $0 | $0 | View return |
| 2020 | Youthport | 990 | Director | 0.5 | $0 | $0 | View return |
| 2020 | Emergency Department Practice Management Association | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Charles and Marie Robertson Foundation C/O Diana Ernst | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2020 | Arcola Volunteer Fire Department Inc. | 990 | Chief Engine | 5 | $0 | $0 | View return |
| 2020 | Boonville Cemetery Association Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2020 | Intercultural Student Experiences | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | Trinity Cemetery Association | 990 | President | 5 | $0 | $0 | View return |
| 2019 | Cognia Inc (Fka Advance Education Inc) | 990 | Sr. VP Operations Services | 40 | $267,751 | $0 | View return |
| 2019 | Rural Perry County Fire Protection Association | 990 | Director | 0 | $0 | $0 | View return |
| 2019 | Maurice Paul and Glennys Brimmer Foundation | 990PF | Vice President | 1 | $0 | $0 | View return |
| 2019 | Boonville Cemetery Association Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2019 | Youthport | 990 | Director | 0.5 | $0 | $0 | View return |
| 2019 | Charles and Marie Robertson Foundation C/O Diana Ernst | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2019 | Emergency Department Practice Management Association | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Arcola Volunteer Fire Department Inc. | 990 | Chief Engine | 5 | $0 | $0 | View return |
| 2019 | Robertson Foundation for Government Inc C/O Withumsmithbrown | 990PF | Board Member | 0 | $0 | $0 | View return |
| 2019 | Boys & Girls Club of Cedar Rapids | 990 | Secretary | 2 | $0 | $0 | View return |
| 2019 | Intercultural Student Experiences | 990 | Director | 2 | $0 | $0 | View return |
| 2019 | Churchill Community Coalition | 990 | Director | 5 | $0 | $0 | View return |
| 2018 | Measured Progress Inc | 990 | Sr. VP Business Development | 37.5 | $260,465 | $0 | View return |
| 2018 | Robertson Foundation for Government Inc C/O Withumsmithbrown | 990PF | Board Member | 3 | $4,000 | $0 | View return |
| 2018 | Rural Perry County Fire Protection Association | 990 | Director | 0 | $0 | $0 | View return |
| 2018 | Charles and Marie Robertson Foundation C/O Diana Ernst | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2018 | Maurice Paul and Glennys Brimmer Foundation | 990PF | Vice President | 1 | $0 | $0 | View return |
| 2018 | Arcola Volunteer Fire Department Inc. | 990 | Chief Engine | 5 | $0 | $0 | View return |
| 2018 | Association of Bluffton Baseball & Softball Inc. | 990EZ | Board Member | 2 | $0 | - | View return |
| 2018 | Pregnancy Resource Clinic Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Boonville Cemetery Association Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2018 | Boys & Girls Club of Cedar Rapids | 990 | Immediate Past Board Chair | 2 | $0 | $0 | View return |
| 2018 | Churchill Community Coalition | 990 | Director | 5 | $0 | $0 | View return |
| 2018 | Intercultural Student Experiences | 990 | Vice Chair | 3 | $0 | $0 | View return |
| 2017 | Measured Progress Inc | 990 | Sr. VP Business Development | 37.5 | $274,994 | $0 | View return |
| 2017 | Dairyland Power Cooperative | 990 | Alternate Board Member (Nov) | 4 | $548 | $0 | View return |
| 2017 | Rural Perry County Fire Protection Association | 990 | Director | 0 | $0 | $0 | View return |
| 2017 | Robertson Foundation for Government Inc C/O Withumsmithbrown | 990PF | Board Member | 3 | $0 | $0 | View return |
| 2017 | Cherokee Child Advocacy Council Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | Charles and Marie Robertson Foundation C/O Diana Ernst | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2017 | Intercultural Student Experiences | 990 | Vice Chair | 3 | $0 | $0 | View return |
| 2017 | Portland Youth Philharmonic Association | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | Boys & Girls Club of Cedar Rapids | 990 | Board Chair | 3 | $0 | $0 | View return |
| 2017 | Southeastern Universities Research Association Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Cherokee Child Advocacy Council Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2016 | Robertson Foundation for Government Inc C/O Withumsmithbrown | 990PF | Board Member | 3 | $0 | $0 | View return |
| 2016 | Portland Youth Philharmonic Association | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | Rural Perry County Fire Protection Association | 990 | Director | 0 | $0 | $0 | View return |
| 2016 | Charles and Marie Robertson Foundation C/O Diana Ernst | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2016 | Boys & Girls Club of Cedar Rapids | 990 | Board Chair | 3 | $0 | $0 | View return |
| 2016 | Intercultural Student Experiences | 990 | Vice Chair | 3 | $0 | $0 | View return |
| 2016 | Southeastern Universities Research Association Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Global Citizens Network | 990 | Secretary | 1.3 | $0 | $0 | View return |
| 2015 | Cherokee Child Advocacy Council Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | Charles and Marie Robertson Foundation C/O Diana Ernst | 990PF | Secretary/Director | 0 | $0 | - | View return |
| 2015 | Boys & Girls Club of Cedar Rapids | 990 | Board Chair | 3 | $0 | $0 | View return |
| 2015 | Goshen Community Theatre Inc. | 990 | Board Member | 0 | $0 | $0 | View return |
| 2015 | Southeastern Universities Research Association Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Intercultural Student Experiences | 990 | Vice Chair | 3 | $0 | $0 | View return |
| 2014 | Rural Perry County Fire Protection Association | 990 | Director | 0 | $0 | $0 | View return |
| 2014 | Serra Club of E Harris County 340 Serra International | 990EZ | Treasurer | 10 | $0 | - | View return |
| 2014 | Global Citizens Network | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Boys & Girls Club of Cedar Rapids | 990 | Vice Chair | 1 | $0 | $0 | View return |
| 2014 | American Institute of Physics Incorporated | 990 | Director | 2 | $0 | $0 | View return |
| 2014 | Civics Learning Project | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Charles and Marie Robertson Foundation C/O Diana Ernst | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2014 | Cherokee Child Advocacy Council Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Southeastern Universities Research Association Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Intercultural Student Experiences | 990 | Secretary | 1.3 | $0 | $0 | View return |
| 2013 | Civics Learning Project | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | Warren County Bar Association | 990EZ | Vice-President | 1 | $0 | $0 | View return |
| 2013 | American Institute of Physics Incorporated | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Cherokee Child Advocacy Council Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | Boys & Girls Club of Cedar Rapids | 990 | Vice Chair | 1 | $0 | $0 | View return |
| 2013 | Southeastern Universities Research Association Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Intercultural Student Experiences | 990 | Director | 1 | $0 | $0 | View return |