| 2019 | Agronomic Science Foundation Inc. | 990 | Chief Executive Officer | 0.87 | $0 | $0 | View return |
| 2019 | Supporters of Agricultural Research Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | American Society of Agronomy Inc. | 990 | Director/CEO | 13.37 | $0 | $278,242 | View return |
| 2018 | Crop Science Society of America Inc. | 990 | Chief Executive Officer | 11.44 | $0 | $278,242 | View return |
| 2018 | Supporters of Agricultural Research Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Crop Science Society of America Inc. | 990 | Chief Executive Officer | 11.44 | $0 | $265,231 | View return |
| 2017 | American Society of Agronomy Inc. | 990 | Director/CEO | 13.37 | $0 | $265,231 | View return |
| 2017 | Supporters of Agricultural Research Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Crop Science Society of America Inc. | 990 | Chief Executive Officer | 10.19 | $0 | $252,075 | View return |
| 2016 | American Society of Agronomy Inc. | 990 | Director/CEO | 15.52 | $0 | $252,075 | View return |
| 2016 | Council of Engineering and Scientific Society Executives | 990 | Vice Chair | 2 | $0 | $0 | View return |
| 2015 | Alliance of Crop Soil and Environmental Science Societies In | 990 | Chief Executive Officer | 0.5 | $235,186 | $0 | View return |
| 2015 | Crop Science Society of America Inc. | 990 | Chief Executive Officer | 10.2 | $0 | $235,186 | View return |
| 2015 | American Society of Agronomy Inc. | 990 | Director/CEO | 15.5 | $0 | $235,186 | View return |
| 2015 | Agronomic Science Foundation Inc. | 990 | Executive Secretary-Treasurer | 0.1 | $0 | $0 | View return |
| 2015 | Council of Engineering and Scientific Society Executives | 990 | Secretary | 2 | $0 | $0 | View return |
| 2014 | Alliance of Crop Soil and Environmental Science Societies In | 990 | Chief Executive Officer | 0.5 | $225,723 | $0 | View return |
| 2014 | American Society of Agronomy Inc. | 990 | Director/CEO | 15.5 | $0 | $225,723 | View return |
| 2014 | Agronomic Science Foundation Inc. | 990 | Executive Secretary-Treasurer | 0.5 | $0 | $0 | View return |
| 2014 | Council of Engineering and Scientific Society Executives | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Alliance of Crop Soil and Environmental Science Societies In | 990 | Chief Executive Officer | 0.5 | $209,500 | $0 | View return |
| 2013 | American Society of Agronomy Inc. | 990 | Director/CEO | 14 | $0 | $209,500 | View return |
| 2013 | Agronomic Science Foundation Inc. | 990 | Chief Executive Officer | 0.5 | $0 | $0 | View return |
| 2013 | Charles V Riley Memorial Foundation | 990PF | Treasurer | 0.2 | $0 | $0 | View return |