| 2024 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | - | $0 | $0 | View return |
| 2024 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2024 | Chemical Heritage Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2024 | Science History Institute Support Company | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | Ralph Landau Foundation | 990PF | President | 8 | $100,000 | $0 | View return |
| 2023 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2023 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Science History Institute Support Company | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Chemical Heritage Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | Roger Williams University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Ralph Landau Foundation | 990PF | President | 8 | $100,000 | $0 | View return |
| 2022 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2022 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Roger Williams University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Chemical Heritage Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2022 | Science History Institute Support Company | 990 | Board Member | 1 | $0 | $0 | View return |
| 2021 | Ralph Landau Foundation | 990PF | President | 0.25 | $100,000 | $0 | View return |
| 2021 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2021 | Science History Institute Support Company | 990 | Board Member | 1 | $0 | $0 | View return |
| 2021 | Chemical Heritage Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2021 | Roger Williams University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Ralph Landau Foundation | 990PF | President | 0.25 | $100,000 | $0 | View return |
| 2020 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2019 | Ralph Landau Foundation | 990PF | President | 0.25 | $100,000 | $0 | View return |
| 2019 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2019 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2019 | Chemical Heritage Foundation | 990 | Member | 1 | $0 | $0 | View return |
| 2019 | Science History Institute Support Company | 990 | Member | 1 | $0 | $0 | View return |
| 2019 | American Farmland Trust | 990 | Vice Chair | 3 | $0 | $0 | View return |
| 2018 | Ralph Landau Foundation | 990PF | President | 0.25 | $100,000 | $0 | View return |
| 2018 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2018 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2018 | American Farmland Trust | 990 | Vice Chair | 3 | $0 | $0 | View return |
| 2018 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2017 | Ralph Landau Foundation | 990PF | President | 0.25 | $100,000 | $0 | View return |
| 2017 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2017 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2017 | American Farmland Trust | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Ralph Landau Foundation | 990PF | President | 0.25 | $100,000 | $0 | View return |
| 2016 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2016 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2016 | Chemical Heritage Foundation | 990 | Chair | 5 | $0 | $0 | View return |
| 2016 | Science History Institute Support Company | 990 | Chair | 5 | $0 | $0 | View return |
| 2016 | American Farmland Trust | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Ralph Landau Foundation | 990PF | President | 0.25 | $100,000 | $0 | View return |
| 2015 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2015 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2015 | Chemical Heritage Foundation | 990 | Chair | 5 | $0 | $0 | View return |
| 2015 | American Farmland Trust | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Science History Institute Support Company | 990 | Chair | 5 | $0 | $0 | View return |
| 2014 | Ralph Landau Foundation | 990PF | President | 0.25 | $100,000 | $0 | View return |
| 2014 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2014 | Friends of the Cold Spring Harbor Fish Hatchery Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2014 | Chemical Heritage Foundation | 990 | Chair | 5 | $0 | $0 | View return |
| 2014 | Science History Institute Support Company | 990 | Chair | 5 | $0 | $0 | View return |
| 2014 | American Farmland Trust | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | American Farmland Trust | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Ralph Landau Foundation | 990PF | President | 0.25 | $100,000 | $0 | View return |
| 2013 | The Laurie Landeau Foundation | 990PF | President | 0.25 | $0 | $0 | View return |
| 2013 | Chemical Heritage Foundation | 990 | Chair | 5 | $0 | $0 | View return |
| 2013 | Science History Institute Support Company | 990 | Chair | 5 | $0 | $0 | View return |
| 2013 | American Farmland Trust | 990 | Director | 1 | $0 | $0 | View return |
| 2012 | Ralph Landau Foundation | 990PF | President | 0.25 | $100,000 | $0 | View return |
| 2011 | Ralph Landau Foundation | 990PF | President | 0.25 | $100,000 | $0 | View return |
| 2010 | Ralph Landau Foundation | 990PF | President | 0 | $100,000 | $0 | View return |