| 2025 | Friends of the Bay Beach Wildlife Sanctuary Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | George Kress Foundation Inc | 990PF | Chairman | 1 | $0 | $0 | View return |
| 2024 | Information Systems Security Association | 990EZ | President | 2 | $0 | $0 | View return |
| 2024 | Friends of the Bay Beach Wildlife Sanctuary Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Information Systems Security Association | 990EZ | President | 3 | $0 | $0 | View return |
| 2022 | Friends of the Bay Beach Wildlife Sanctuary Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Friends of the Bay Beach Wildlife Sanctuary Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Friends of the Bay Beach Wildlife Sanctuary Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Friends of the Bay Beach Wildlife Sanctuary Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | American Thoracic Society Inc. | 990 | On Board Until 4/30 See Sch O | 1 | $0 | $0 | View return |
| 2019 | George Kress Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2018 | American Thoracic Society Inc. | 990 | Chair, Assembly On Critical Care | 1 | $1,000 | $0 | View return |
| 2018 | Friends of the Bay Beach Wildlife Sanctuary Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | National Railroad Museum Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | American Thoracic Society Inc. | 990 | Assembly Chair | 1 | $0 | $0 | View return |
| 2017 | National Railroad Museum Inc. | 990 | Director | - | $0 | $0 | View return |
| 2017 | Friends of the Bay Beach Wildlife Sanctuary Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Organization for Tropical Studies Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2016 | Friends of the Bay Beach Wildlife Sanctuary Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | National Railroad Museum Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Smithsonian Institution | 990 | Interim Under Secretary - Science | 50 | $164,709 | $0 | View return |
| 2015 | Friends of the Bay Beach Wildlife Sanctuary Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | National Railroad Museum Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Organization for Tropical Studies Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Smithsonian Institution | 990 | Interim Under Secretary - Science | 50 | $155,279 | $0 | View return |
| 2014 | Woodlawn Cemetery Association | 990 | Director | 0.5 | $0 | $0 | View return |
| 2014 | Organization for Tropical Studies Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | National Railroad Museum Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Woodlawn Cemetery Association | 990 | Director | 0.5 | $0 | $0 | View return |
| 2013 | Sleds of Stafford Inc. | 990EZ | Director | 2 | $0 | - | View return |
| 2013 | National Railroad Museum Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Organization for Tropical Studies Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | Organization for Tropical Studies Inc. | 990 | Board Member | 1 | $0 | $0 | View return |