Who funds Sierra Club Foundation
585 institutional funders have given since 2022, 470 of them directly, through tax year 2024.
Its two largest direct donors
- Climate Imperative Foundation$48.6M2023–2024
- Skyline Foundation$10.5M2022–2024
A free account names its 5 largest direct donors, and the funders behind them.
Unlock potential prospectsFinances
Latest return: tax year 2025, Form 990.
| Tax year | Revenue | Expenses | Net assets |
|---|---|---|---|
| 2025 | $31.9M | $53.1M | $164.6M |
| 2024 | $108.2M | $102.1M | $180.6M |
| 2023 | $89.1M | $113.5M | $167.5M |
| 2022 | $87.7M | $113.4M | $176.9M |
| 2020 | $95.6M | $94.3M | $214.6M |
Contributions and grants received in 2025: $29.3M.
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Built from the organization’s public IRS Form 990 filings and the gifts other organizations report on theirs, processed by Aprize. Institutional donors only: individual donors are never shown. Data as of 1 November 2026.
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