| 2024 | Acushnet River Reserve Inc. | 990 | Chair | 0.5 | $0 | $0 | View return |
| 2024 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2024 | The Trustees of Reservations | 990 | Secretary | 2 | $0 | $0 | View return |
| 2024 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2024 | De Cordova and Dana Museum and Park | 990 | Director | 2 | $0 | $0 | View return |
| 2023 | Buzzards Bay Coalition Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2023 | The Trustees of Reservations | 990 | Secretary | 2 | $0 | $0 | View return |
| 2023 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2023 | Museum of Fine Arts | 990 | Elected Trustee | 1 | $0 | $0 | View return |
| 2023 | De Cordova and Dana Museum and Park | 990 | Director | 2 | $0 | $0 | View return |
| 2023 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2022 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2022 | Museum of Fine Arts | 990 | Elected Trustee | 1 | $0 | $0 | View return |
| 2022 | Buzzards Bay Coalition Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | De Cordova and Dana Museum and Park | 990 | Trustee | 2 | $0 | $0 | View return |
| 2022 | The Trustees of Reservations | 990 | Clerk/Secretary | 2 | $0 | $0 | View return |
| 2022 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2021 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2021 | Museum of Fine Arts | 990 | Elected Trustee | 1 | $0 | $0 | View return |
| 2021 | The Trustees of Reservations | 990 | Clerk/Secretary | 2 | $0 | $0 | View return |
| 2021 | De Cordova and Dana Museum and Park | 990 | Trustee | 2 | $0 | $0 | View return |
| 2021 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2020 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2020 | The Trustees of Reservations | 990 | Secretary | 2 | $0 | $0 | View return |
| 2020 | Museum of Fine Arts | 990 | Elected Trustee | 1 | $0 | $0 | View return |
| 2020 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2020 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | Buzzards Bay Coalition Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2019 | Museum of Fine Arts | 990 | Elected Trustee | 1 | $0 | $0 | View return |
| 2019 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2019 | The Trustees of Reservations | 990 | Director | 2 | $0 | $0 | View return |
| 2019 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2019 | Buzzards Bay Coalition Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | De Cordova and Dana Museum and Park | 990 | Trustee | 2 | $0 | $0 | View return |
| 2019 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2018 | American Federation of Teachers-915 Local | 990 | Treasurer | 10 | $2,650 | $0 | View return |
| 2018 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2018 | The Trustees of Reservations | 990 | Director | 2 | $0 | $0 | View return |
| 2018 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2018 | Museum of Fine Arts | 990 | Elected Trustee | 1 | $0 | $0 | View return |
| 2018 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | American Federation of Teachers-915 Local | 990 | Treasurer | 10 | $5,300 | $0 | View return |
| 2017 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2017 | Cornell University | 990 | Vice Chair | 2 | $0 | $0 | View return |
| 2017 | Museum of Fine Arts | 990 | Elected Trustee - President, Board Of Trustees | 1 | $0 | $0 | View return |
| 2017 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | The Trustees of Reservations | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | American Federation of Teachers-915 Local | 990 | Treasurer | 10 | $5,300 | $0 | View return |
| 2016 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2016 | The Trustees of Reservations | 990 | Chairman | 10 | $0 | $0 | View return |
| 2016 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2016 | Cornell University | 990 | Vice Chairman | 2 | $0 | $0 | View return |
| 2016 | Museum of Fine Arts | 990 | Elected Trustee - President | 1 | $0 | $0 | View return |
| 2016 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2015 | American Federation of Teachers-915 Local | 990 | Treasurer | 10 | $883 | $0 | View return |
| 2015 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2015 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2015 | The Trustees of Reservations | 990 | Chairman | 10 | $0 | $0 | View return |
| 2015 | Museum of Fine Arts | 990 | Elected Trustee - President Of Board Of Trustee | 1 | $0 | $0 | View return |
| 2015 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2015 | Cornell University | 990 | Vice Chairman | 2 | $0 | $0 | View return |
| 2014 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2014 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2014 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2014 | Museum of Fine Arts | 990 | Elected Trustee-President Of The Board Of Trustees | 1 | $0 | $0 | View return |
| 2014 | Cornell University | 990 | Vice Chairman | 2 | $0 | $0 | View return |
| 2014 | The Trustees of Reservations | 990 | Chairman | 10 | $0 | $0 | View return |
| 2013 | American Federation of Teachers-915 Local | 990 | Secondary Rep. | 10 | $2,511 | $0 | View return |
| 2013 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2013 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2013 | Cornell University | 990 | Trustee-Vice Chairman | 1 | $0 | $0 | View return |
| 2013 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2013 | The Trustees of Reservations | 990 | Chairman | 10 | $0 | $0 | View return |
| 2012 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2011 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 0.5 | $0 | $0 | View return |
| 2011 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2010 | The Massachusetts Lands Trust Inc C/O David D Croll | 990PF | President, Treasurer And D | 3 | $0 | $0 | View return |
| 2010 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2009 | The Croll Foundation Attn Mary Kathleen Oconnell | 990PF | Trustee | 2 | $0 | $0 | View return |