| 2024 | The Mca Foundation | 990 | Chairman | 1 | $0 | $0 | View return |
| 2024 | The Mark W Blackman & Deborah | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2023 | Retail Wholesale Department Store Union Local 705 | 990EZ | Steward | 1 | $860 | $0 | View return |
| 2023 | The Mark W Blackman & Deborah | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2023 | The Country Club of Spartanburg | 990 | Board Member | 2 | $0 | $0 | View return |
| 2023 | Artspower Inc | 990 | Co Director | 0.5 | $0 | $0 | View return |
| 2023 | California Manufactured Housing | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2022 | Artspower Inc | 990 | Co Director | 30 | $114,600 | $0 | View return |
| 2022 | The Mark W Blackman & Deborah | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2022 | The Country Club of Spartanburg | 990 | Board Member | 2 | $0 | $0 | View return |
| 2022 | Clark County Bar Association | 990 | Director | 4 | $0 | $0 | View return |
| 2022 | California Manufactured Housing | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2021 | Clark County Bar Association | 990 | Director | 5 | $0 | $0 | View return |
| 2021 | Springer Elementary School PTA | 990 | Auditor | 0.5 | $0 | $0 | View return |
| 2021 | California Manufactured Housing | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | The Mark W Blackman & Deborah | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2021 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2020 | Artspower Inc | 990 | Co Director | 40 | $12,300 | $0 | View return |
| 2020 | Springer Elementary School PTA | 990 | Auditor | 0.5 | $0 | $0 | View return |
| 2020 | The Mark W Blackman & Deborah | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2020 | Clark County Bar Association | 990 | Director | 5 | $0 | $0 | View return |
| 2020 | California Manufactured Housing | 990 | Director | 0 | $0 | $0 | View return |
| 2020 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2019 | Artspower Inc | 990 | Co Director | 40 | $51,500 | $0 | View return |
| 2019 | California Manufactured Housing | 990 | Director | 0 | $0 | $0 | View return |
| 2019 | The Mark W Blackman & Deborah | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2019 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2018 | Artspower Inc | 990 | Co Director | 40 | $65,780 | $0 | View return |
| 2018 | Plowshare Center Inc | 990EZ | Director | 0 | $0 | $0 | View return |
| 2018 | California Manufactured Housing | 990 | Director | 0 | $0 | $0 | View return |
| 2018 | The Mark W Blackman & Deborah | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2018 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2017 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2017 | California Manufactured Housing | 990 | Director | 0 | $0 | $0 | View return |
| 2016 | Artspower Inc | 990 | Co Director | 40 | $88,400 | $0 | View return |
| 2016 | Global Lyme Alliance Inc | 990 | Director To April 2016 | 2 | $0 | $0 | View return |
| 2016 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2015 | Artspower Inc | 990 | Co Director | 40 | $87,450 | $0 | View return |
| 2015 | United Trustees Association | 990 | Director | 0 | $0 | $0 | View return |
| 2015 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2014 | Artspower Inc | 990 | Co Director | 40 | $81,200 | $0 | View return |
| 2014 | United Trustees Association | 990 | Director | 0 | $0 | $0 | View return |
| 2014 | Institute for Clinical Research Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Institute for Clinical Research Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Global Lyme Alliance Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2014 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2013 | Artspower Inc | 990 | Co-Director | 40 | $81,700 | $0 | View return |
| 2013 | United Trustees Association | 990 | Director | 0 | $0 | $0 | View return |
| 2013 | Institute for Clinical Research Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Palmetto Council Inc | 990 | Board Member | 2 | $0 | $0 | View return |
| 2013 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2011 | John N Blackman Sr Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |