MAMMOTH SITE OF HOT SPRINGS SOUTH DAKOTA INC
This page provides access to IRS Form 990 filings associated with MAMMOTH SITE OF HOT SPRINGS SOUTH DAKOTA INC. Form 990 is an annual information return filed with the IRS and includes details on finances, governance, and charitable activities. Browse filings by year and download IRS tax return PDFs.
| Year | Status | Form Type | |
|---|---|---|---|
2026 | Unavailable N/A | No file | No file |
2025 | Unavailable N/A | No file | No file |
2024 | Unavailable N/A | No file | No file |
2023 | Processed | 990 |  View IRS Form 990 |
2022 | Processed | 990 | View IRS Form 990 |
2021 | Processed | 990 | View IRS Form 990 |
2020 | Processed | 990 | View IRS Form 990 |
2019 | Processed | 990 | View IRS Form 990 |
2018 | Processed | 990 | View IRS Form 990 |
2017 | Processed | 990 | View IRS Form 990 |
2016 | Processed | 990 | View IRS Form 990 |
2015 | Processed | 990 | View IRS Form 990 |
2014 | Processed | 990 | View IRS Form 990 |
2013 | Unavailable N/A | No file | No file |