| 2025 | Campground Water Association Inc | 990 | Secretary | 0.5 | $0 | $0 | View return |
| 2024 | The Andrew W Mellon Foundation | 990PF | President | 50 | $1,528,343 | $522,785 | View return |
| 2024 | Northern Lake George Yacht Club | 990 | Asst Manager (Weekly Hours Reflect July And August Only) | 25 | $5,143 | $0 | View return |
| 2024 | Ypo Pacific Regional Administrative | 990 | Regional Area Officer | 1 | $0 | $0 | View return |
| 2024 | Campground Water Association Inc | 990 | Secretary | 0.5 | $0 | $0 | View return |
| 2024 | Dont Forget to Feed Me Pet Food Bank Inc. | 990 | Co-President | 0.79 | $0 | $0 | View return |
| 2024 | Crow Canyon Archaeological Center | 990 | Trustee | 3 | $0 | $0 | View return |
| 2024 | Bath-Highland County Volunteer Fire Department | 990 | Sec/Treas 1s | 2 | $0 | $0 | View return |
| 2024 | New York-Presbyterian Foundation Inc. | 990EZ | Governor | 0.25 | $0 | $0 | View return |
| 2024 | Hearts2Honduras Inc. | 990 | Board Member | 0.5 | $0 | $0 | View return |
| 2024 | Seth Alexander Memorial Scholarship Fund | 990EZ | President | 5 | $0 | - | View return |
| 2024 | Carlisle Swim Club | 990 | Board Member | 1 | $0 | $0 | View return |
| 2024 | La84 Foundation | 990PF | Director | 2 | $0 | $0 | View return |
| 2024 | New York-Presbyterian Fund Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2024 | The New York and Presbyterian Hospital | 990 | Trustee | 1 | $0 | $0 | View return |
| 2024 | Northshore Youth Soccer Association | 990 | Director | 5 | $0 | $0 | View return |
| 2023 | The Andrew W Mellon Foundation | 990PF | President | 45 | $1,433,722 | $429,715 | View return |
| 2023 | Northern Lake George Yacht Club | 990 | Asst Manager (Weekly Hours Reflect July And August Only) | 5 | $4,000 | $0 | View return |
| 2023 | La84 Foundation | 990PF | Director | 2 | $0 | $0 | View return |
| 2023 | Carlisle Swim Club | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | New York-Presbyterian Foundation Inc. | 990EZ | Governor | 0.25 | $0 | $0 | View return |
| 2023 | Bath-Highland County Volunteer Fire Department | 990 | Sec/Treas 1s | 5 | $0 | $0 | View return |
| 2023 | Crow Canyon Archaeological Center | 990 | Director | 3 | $0 | $0 | View return |
| 2023 | Dont Forget to Feed Me Pet Food Bank Inc. | 990 | Immediate Past President/Director | 0.8 | $0 | $0 | View return |
| 2023 | Campground Water Association Inc | 990 | Secretary | 0.5 | $0 | $0 | View return |
| 2023 | Northshore Youth Soccer Association | 990 | Director | 5 | $0 | $0 | View return |
| 2023 | Lincoln Center for the Performing Arts Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP, Director | 1 | $0 | $0 | View return |
| 2023 | The Administrators of the Tulane Educational Fund | 990 | Voting Board Member | 0 | $0 | $0 | View return |
| 2023 | College Rotary Club | 990 | Past President | 2 | $0 | $0 | View return |
| 2023 | Trash the Runway | 990EZ | Board President | 0.5 | $0 | $0 | View return |
| 2023 | Jodi House Inc. | 990 | Vice President | 2 | $0 | $0 | View return |
| 2023 | Menchville House Ministries Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | American Yacht Club | 990 | Commodore | 3 | $0 | $0 | View return |
| 2022 | The Andrew W Mellon Foundation | 990PF | President | 40 | $1,161,595 | $99,310 | View return |
| 2022 | Northern Lake George Yacht Club | 990EZ | Asst Manager (Weekly Hours Reflect July And August Only) | 25 | $5,450 | $0 | View return |
| 2022 | Crow Canyon Archaeological Center | 990 | Director | 3 | $0 | $0 | View return |
| 2022 | Kent Washington Association of Realtors Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Campground Water Association Inc | 990 | Secretary | 0.5 | $0 | $0 | View return |
| 2022 | New York-Presbyterian Foundation Inc. | 990EZ | Governor | 0.25 | $0 | $0 | View return |
| 2022 | Dont Forget to Feed Me Pet Food Bank Inc. | 990 | President, Treasurer | 2 | $0 | $0 | View return |
| 2022 | Bath-Highland County Volunteer Fire Department | 990 | Treas 1st Re | 5 | $0 | $0 | View return |
| 2022 | North Beach Community Alliance Inc. | 990PF | Secretary | 2 | $0 | $0 | View return |
| 2022 | La84 Foundation | 990PF | Director | 2 | $0 | $0 | View return |
| 2022 | Northshore Youth Soccer Association | 990 | Board Member | 5 | $0 | $0 | View return |
| 2022 | The Administrators of the Tulane Educational Fund | 990 | Voting Board Member | 0 | $0 | $0 | View return |
| 2022 | Lincoln Center for the Performing Arts Inc. | 990 | Director As Of 6/13/2023 | 1 | $0 | $0 | View return |
| 2022 | Menchville House Ministries Inc | 990 | Director | 0.5 | $0 | $0 | View return |
| 2022 | American Yacht Club | 990 | Rear Commodore | 3 | $0 | $0 | View return |
| 2022 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP | 1 | $0 | $0 | View return |
| 2022 | College Rotary Club | 990 | President | 2 | $0 | $0 | View return |
| 2021 | The Andrew W Mellon Foundation | 990PF | President | 40 | $1,059,864 | $90,763 | View return |
| 2021 | Northern Lake George Yacht Club | 990EZ | Asst Manager (Weekly Hours Reflect July And August Only) | 32 | $3,150 | $0 | View return |
| 2021 | Bath-Highland County Volunteer Fire Department | 990 | Treas 1st Re | 5 | $0 | $0 | View return |
| 2021 | Polk County Humane Society Inc | 990 | Director | 10 | $0 | $0 | View return |
| 2021 | Dont Forget to Feed Me Pet Food Bank Inc. | 990 | President, Treasurer | 2 | $0 | $0 | View return |
| 2021 | Kent Washington Association of Realtors Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Campground Water Association Inc | 990 | Secretary | 0.5 | $0 | $0 | View return |
| 2021 | Crow Canyon Archaeological Center | 990 | Director | 3 | $0 | $0 | View return |
| 2021 | College Rotary Club | 990 | President-Elect | 2 | $0 | $0 | View return |
| 2021 | New York-Presbyterian Foundation Inc. | 990EZ | Governor | 0.25 | $0 | $0 | View return |
| 2021 | Northshore Youth Soccer Association | 990 | Board Member | 10 | $0 | $0 | View return |
| 2021 | Menchville House Ministries Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Northshore Girls Slowpitch Softball Association | 990EZ | Umpire-In-Chief | 2 | $0 | - | View return |
| 2021 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP | 1 | $0 | $0 | View return |
| 2021 | American Yacht Club | 990 | Rear Commodore | 3 | $0 | $0 | View return |
| 2020 | The Andrew W Mellon Foundation | 990PF | President | 40 | $960,207 | $88,735 | View return |
| 2020 | Menchville House Ministries Inc | 990 | Board Treasu | 1 | $0 | $0 | View return |
| 2020 | New York-Presbyterian Fund Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2020 | New York-Presbyterian Foundation Inc. | 990EZ | Governor | 0.25 | $0 | $0 | View return |
| 2020 | College Rotary Club | 990 | Youth Exchange | 2 | $0 | $0 | View return |
| 2020 | The New York and Presbyterian Hospital | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Campground Water Association Inc | 990 | Secretary | - | $0 | $0 | View return |
| 2020 | Bath-Highland County Volunteer Fire Department | 990 | Treas 1st Re | 5 | $0 | $0 | View return |
| 2020 | Springfield Illinois African-American History Foundatio | 990 | Membership Committee | - | $0 | $0 | View return |
| 2020 | Polk County Humane Society Inc | 990 | Director | 10 | $0 | $0 | View return |
| 2020 | Kent Washington Association of Realtors Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Golden Heart Softball Association | 990 | Secretary | 1 | $0 | $0 | View return |
| 2020 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP | 1 | $0 | $0 | View return |
| 2020 | American Yacht Club | 990 | Rear Commodore | 3 | $0 | $0 | View return |
| 2020 | Northshore Girls Slowpitch Softball Association | 990EZ | Umpire-In-Chief | 2 | $0 | - | View return |
| 2019 | The Andrew W Mellon Foundation | 990PF | President | 40 | $914,505 | $79,292 | View return |
| 2019 | Springfield Illinois African-American History Foundatio | 990 | Recording Secretary | - | $0 | $0 | View return |
| 2019 | Kent Washington Association of Realtors Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | New York-Presbyterian Foundation Inc. | 990EZ | Governor | 0.25 | $0 | $0 | View return |
| 2019 | The New York and Presbyterian Hospital | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | New York-Presbyterian Fund Inc. | 990 | Director | 0.25 | $0 | $0 | View return |
| 2019 | Bath-Highland County Volunteer Fire Department | 990 | Treas 1st Re | 5 | $0 | $0 | View return |
| 2019 | Campground Water Association Inc | 990 | Secretary | - | $0 | $0 | View return |
| 2019 | Crow Canyon Archaeological Center | 990 | Member | 3 | $0 | $0 | View return |
| 2019 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP | 1 | $0 | $0 | View return |
| 2019 | Menchville House Ministries Inc | 990 | Board Treasu | 0.5 | $0 | $0 | View return |
| 2018 | The Andrew W Mellon Foundation | 990PF | President (Effective 3/17) | 40 | $930,374 | $57,233 | View return |
| 2018 | Campground Water Association Inc | 990 | Secretary | 1 | $0 | $0 | View return |
| 2018 | Springfield Illinois African-American History Foundatio | 990 | Recording Secretary | - | $0 | $0 | View return |
| 2018 | Kent Washington Association of Realtors Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Bath-Highland County Volunteer Fire Department | 990 | Treas 1st Re | 5 | $0 | $0 | View return |
| 2018 | Crow Canyon Archaeological Center | 990 | Member | 3 | $0 | $0 | View return |
| 2018 | Menchville House Ministries Inc | 990 | Board Treasu | 0.5 | $0 | $0 | View return |
| 2018 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP | 1 | $0 | $0 | View return |
| 2018 | Oakdale High School Band Boosters Inc | 990EZ | Director | 0 | $0 | - | View return |
| 2018 | Springfield Illinois African-American History Foundatio | 990 | Recording Secretary | - | $0 | $0 | View return |
| 2018 | Bath-Highland County Volunteer Fire Department | 990 | Treas 1st Re | 5 | $0 | $0 | View return |
| 2017 | Bath-Highland County Volunteer Fire Department | 990 | Treas 1st Re | 2 | $0 | $0 | View return |
| 2017 | Springfield Illinois African-American History Foundatio | 990 | Recording Secretary | - | $0 | $0 | View return |
| 2017 | Crow Canyon Archaeological Center | 990 | Secretary | 3 | $0 | $0 | View return |
| 2017 | Oakdale High School Band Boosters Inc | 990EZ | Director | 0 | $0 | - | View return |
| 2017 | The Archaeological Conservancy | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Order of De Pineda - Corpus Christi | 990EZ | 2nd Vice President | 1 | $0 | $0 | View return |
| 2017 | Saratoga Springs Performing Arts Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Central Shenandoah Ems Council Inc. | 990 | Member At La | 2 | $0 | $0 | View return |
| 2017 | Ethical Culture Fieldston School | 990 | Trustee | 2 | $0 | $0 | View return |
| 2017 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP | 1 | $0 | $0 | View return |
| 2017 | Connecticut Fund for the Environment | 990 | Director | 0.5 | $0 | $0 | View return |
| 2017 | Ethical Culture Fieldston School | 990 | Trustee | 2 | $0 | $0 | View return |
| 2016 | Order of De Pineda - Corpus Christi | 990EZ | 2nd Vice President | 1 | $0 | $0 | View return |
| 2016 | Saratoga Springs Performing Arts Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Central Shenandoah Ems Council Inc. | 990 | Member At La | - | $0 | $0 | View return |
| 2016 | Crow Canyon Archaeological Center | 990 | Secretary | 3 | $0 | $0 | View return |
| 2016 | Bath-Highland County Volunteer Fire Department | 990 | Treas 1st Re | 2 | $0 | $0 | View return |
| 2016 | Tennessee Academy of Nutrition and Dietetics | 990EZ | Director | 1 | $0 | $0 | View return |
| 2016 | Connecticut Fund for the Environment | 990 | Director | 0.5 | $0 | $0 | View return |
| 2016 | Ethical Culture Fieldston School | 990 | Trustee | 2 | $0 | $0 | View return |
| 2016 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP | 1 | $0 | $0 | View return |
| 2015 | Tennessee Academy of Nutrition and Dietetics | 990EZ | Director | 1 | $0 | $0 | View return |
| 2015 | Central Shenandoah Ems Council Inc. | 990 | Member At La | 5 | $0 | $0 | View return |
| 2015 | Bath-Highland County Volunteer Fire Department | 990 | Treas 1st Re | 2 | $0 | $0 | View return |
| 2015 | Crow Canyon Archaeological Center | 990 | Secretary | 3 | $0 | $0 | View return |
| 2015 | The Future Begins Today | 990EZ | Trustee | 1 | $0 | $0 | View return |
| 2015 | Court-Appointed Special Advocate Guardian Ad Litem of Miami County | 990 | President | 0 | $0 | $0 | View return |
| 2015 | Saratoga Springs Performing Arts Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP | 1 | $0 | $0 | View return |
| 2015 | Ethical Culture Fieldston School | 990 | Trustee | 2 | $0 | $0 | View return |
| 2015 | Connecticut Fund for the Environment | 990 | Director | 0.5 | $0 | $0 | View return |
| 2015 | Lamar University Foundation Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Fairbanks Education Association | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Crow Canyon Archaeological Center | 990 | Secretary | 3 | $0 | $0 | View return |
| 2014 | Central Shenandoah Ems Council Inc. | 990 | Member At La | - | $0 | $0 | View return |
| 2014 | Court-Appointed Special Advocate Guardian Ad Litem of Miami County | 990 | President | 0 | $0 | $0 | View return |
| 2014 | Bath-Highland County Volunteer Fire Department | 990 | Co-Treasurer-First Responders | 2 | $0 | $0 | View return |
| 2014 | Alpha Gamma Delta Beta XI Chapter | 990 | VP Member Development | 5 | $0 | $0 | View return |
| 2014 | Lawrence & Augusta Hager Educational Foundation Inc. | 990PF | Vice Pres/Director Emeritus | 2 | $0 | $0 | View return |
| 2014 | The Future Begins Today | 990EZ | Secretary | 2 | $0 | $0 | View return |
| 2014 | Center City Association | 990 | Past President | 5 | $0 | $0 | View return |
| 2014 | Saratoga Springs Performing Arts Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP | 1 | $0 | - | View return |
| 2014 | Lamar University Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Connecticut Fund for the Environment | 990 | Director | 0.5 | $0 | $0 | View return |
| 2013 | Bath-Highland County Volunteer Fire Department | 990EZ | Co-Treasurer | 2 | $0 | - | View return |
| 2013 | Saratoga Springs Performing Arts Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Court-Appointed Special Advocate Guardian Ad Litem of Miami County | 990 | President | 0 | $0 | $0 | View return |
| 2013 | Center City Association | 990 | Past President | 5 | $0 | $0 | View return |
| 2013 | Weingart Center Association Inc | 990 | Secretary | 1 | $0 | $0 | View return |
| 2013 | The Future Begins Today | 990EZ | Secretary | 2 | $0 | $0 | View return |
| 2013 | Lamar University Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP | 1 | $0 | - | View return |
| 2012 | Robert L and Frances J Zielsdorf Foundation | 990PF | VP | 1 | $0 | - | View return |
| 2011 | Robert L and Frances J Zielsdorf Foundation | 990PF | Vice President | 1 | $0 | - | View return |
| 2010 | Robert L and Frances J Zielsdorf Foundation | 990PF | Vice President | 1 | $0 | - | View return |
| 2009 | Robert L and Frances J Zielsdorf Foundation | 990PF | Vice President | 1 | $0 | - | View return |