Tidemark 10 Foundation
EIN 85-4039046 · DE · NTEE T22
Giving Profile
In 2025, Tidemark 10 Foundation based in DE paid 16 grants totaling $1.4M to 16 organizations across 8 states. Individual grants ranged from $1K to $1M, with a median of $7.9K. Its largest recipients included STANFORD UNIVERSITY, FIDELITY INVESTMENTS CHARITABLE GIFT FUND, and NATURE CONSERVANCY. The foundation does not accept unsolicited applications — giving is by invitation only.
Foundation at a Glance
- Total assets
- $9,377,937
- Giving (latest yr)
- $1,396,970
- Filing year
- 2025
- Itemized grants
- 16
- Median grant
- $7.9K
- Recipients
- 16
- States reached
- 8
- Officers/trustees
- 2
- Unsolicited applications
- No — invitation only
Where the Money Goes
Top recipients
- Stanford University$1,000,000
- Fidelity Investments Charitable Gift Fund$300,000
- Nature Conservancy$20,000
- Carnegie Endowment for International Peace$10,000
- Kqed Inc$10,000
Where grants went
- California$1,025,470 · 6 grants
- Massachusetts$301,000 · 2 grants
- Virginia$30,000 · 2 grants
- District of Columbia$15,000 · 2 grants
- New York$10,000 · 1 grant
- Illinois$10,000 · 1 grant
Grants Paid (16)
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FAQFrequently Asked Questions
No. Tidemark 10 Foundation does not accept unsolicited applications — its grantmaking is by invitation only. Cultivating a relationship or securing an introduction is typically required.
Tidemark 10 Foundation is classified as a Environment & Animals funder. Conservation, environmental protection, and animal welfare. Its recent grants reached organizations across 8 states.
In its most recent filing, Tidemark 10 Foundation reported 16 itemized grants totaling $1.4M. Individual grants ranged from $1K to $1M (median $7.9K).
Recent recipients include STANFORD UNIVERSITY, FIDELITY INVESTMENTS CHARITABLE GIFT FUND, NATURE CONSERVANCY, among 16 organizations in total. The full grant list is on this page.
Tidemark 10 Foundation is a private foundation based in Delaware, per its IRS 990-PF filing.
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