| 2024 | Netherland-America Foundation Incorporated | 990 | Director | 4 | $0 | $0 | View return |
| 2024 | The J127 Education Foundation | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2024 | The J127 Foundation | 990 | Chairman | 2 | $0 | $0 | View return |
| 2023 | Netherland-America Foundation Incorporated | 990 | Director | 4 | $0 | $0 | View return |
| 2023 | Chamber of Commerce of the USA | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | The J127 Education Foundation | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2023 | The J127 Foundation | 990 | Chairman | 0.5 | $0 | $0 | View return |
| 2022 | Netherland-America Foundation Incorporated | 990 | Director | 4 | $0 | $0 | View return |
| 2022 | Chamber of Commerce of the USA | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | The J127 Education Foundation | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2022 | The J127 Foundation | 990 | Chairman | 0.5 | $0 | $0 | View return |
| 2021 | Netherland-America Foundation Incorporated | 990 | Director | 4 | $0 | $0 | View return |
| 2021 | Chamber of Commerce of the USA | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | The J127 Foundation | 990 | Chairman | 0.5 | $0 | $0 | View return |
| 2021 | The J127 Education Foundation | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2020 | Netherland-America Foundation Incorporated | 990 | Director | 4 | $0 | $0 | View return |
| 2020 | Chamber of Commerce of the USA | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Chamber of Commerce of the USA | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | The J127 Foundation | 990 | Chairman | 2 | $0 | $0 | View return |
| 2019 | The J127 Education Foundation | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2018 | Chamber of Commerce of the USA | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Netherland-America Foundation Incorporated | 990 | Director | 4 | $0 | $0 | View return |
| 2018 | The Klaassen Family Private Foundation | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2018 | The J127 Foundation | 990 | Chairman | 0.5 | $0 | $0 | View return |
| 2018 | The J127 Education Foundation | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2017 | Netherland-America Foundation Incorporated | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | Chamber of Commerce of the USA | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | The J127 Foundation | 990 | Chairman | 0.5 | $0 | $0 | View return |
| 2017 | The J127 Education Foundation | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2016 | Chamber of Commerce of the USA | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Netherland-America Foundation Incorporated | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | The J127 Education Foundation | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2016 | The J127 Foundation | 990 | Chairman | 0.5 | $0 | $0 | View return |
| 2015 | Netherland-America Foundation Incorporated | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Chamber of Commerce of the USA | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | The J127 Realty Foundation Inc | 990 | Chairman | 0.5 | $0 | $0 | View return |
| 2015 | The J127 Education Foundation | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2015 | The J127 Foundation | 990 | Chairman | 0.5 | $0 | $0 | View return |
| 2014 | Netherland-America Foundation Incorporated | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | The J127 Realty Foundation Inc | 990 | Chairman | 0.5 | $0 | $0 | View return |
| 2014 | Chamber of Commerce of the USA | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | The J127 Foundation | 990 | Chairman | 0.5 | $0 | $0 | View return |
| 2014 | The J127 Education Foundation | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2013 | Netherland-America Foundation Incorporated | 990 | Director | 0.25 | $0 | $0 | View return |
| 2013 | Chamber of Commerce of the USA | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | The J127 Education Foundation | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2013 | The J127 Foundation | 990 | Chairman | 0.5 | $0 | $0 | View return |