Mark Diehl Trust
Preselected recipients only
Mark Diehl Trust is a private foundation in Claremore, Oklahoma. In tax year 2025 it gave $42,409 in 4 grants; the typical grant was $5,301 and the largest $27,566. It only gives to organizations it selects itself and does not accept unsolicited applications.
From its IRS Form 990-PF for tax year 2025.
- Grants paid, 2025$42,409
- Number of grants4
- Typical grant$5,301
- Largest grant$27,566
- Assets$1.1 million
- New grantees0%
Giving in 2025 was up from $38,928 the year before.
0% of its 2025 grantees had not received a grant from it the year before, so most of its money goes to organizations it already funds.
Giving by year
| Tax year | Grants paid | Number of grants | Assets |
|---|---|---|---|
| 2023 | $37,940 | 4 | $926,619 |
| 2024 | $38,928 | 4 | $990,297 |
| 2025 | $42,409 | 4 | $1.1 million |
How to apply
Mark Diehl Trust says in its IRS filing that it only makes contributions to preselected organizations, so unsolicited applications are unlikely to be considered. Organizations it funds are usually invited.
What Mark Diehl Trust funds
Where it gives
All of its grants went to recipients in Oklahoma.
| State | Grants | Amount |
|---|---|---|
| Oklahoma | 4 | $42,409 |
Grants paid in 2025
| Recipient | Purpose | Amount |
|---|---|---|
| Oklahoma Medical Research Foundation | General purposes | $27,566 |
| Sacred Heart Catholic Church | General purposes | $6,361 |
| Roman Catholic Diocese of Tulsa | General purposes | $4,241 |
| Fairfax Public Library | General purposes | $4,241 |
Officers and trustees
- RCB Bank
Questions people ask
Does Mark Diehl Trust accept grant applications?
No. Its IRS filing says it only makes contributions to preselected organizations.
How much does Mark Diehl Trust give?
$42,409 in tax year 2025, across 4 grants, with a typical grant of $5,301.
Who runs Mark Diehl Trust?
Its 2025 filing lists RCB Bank (Trustee).
What does Mark Diehl Trust fund?
Based on its grants, mainly faith communities.