The Rhombus Foundation

WILMINGTON, DE EIN: 99-4031209

The Rhombus Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in WILMINGTON, DE. IRS filing data is available for 2024. As of 2024, the organization holds $980K in total assets. In 2024, it awarded 1 grants totaling $10K. Net investment income was $11.

Financial Overview

From 2024 IRS Form 990-PF · View filing

Total Assets

$980K

Annual Giving

$10K

Grant Count

1

Avg Grant Size

$10K

About The Rhombus Foundation

Based on IRS filings

The Rhombus Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in WILMINGTON, DE. IRS filing data is available for 2024. As of 2024, the organization holds $980K in total assets. In 2024, it awarded 1 grants totaling $10K. Net investment income was $11.

Ready to take the next step with The Rhombus Foundation?

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$275K$550K$825K$1M2024
Metric2024
Total Assets$980,261
Revenue$999,511
Expenses$19,250
Qualifying Distributions$19,250
Net Investment Income$11
Distributable Amount$1,869

Giving Over Time

Total grant dollars and number of grants per year

$0$3K$5K$8K$10K1 grants2024

Grant Insights

How this funder distributes its grants

Top Recipients

Top 1 recipients in 2024

AFRICA CENTRE FOR ENERGY…$10K

Grant Size Distribution

1 grants across all recorded years

1<$50K$50–100K$100–250K$250–500K$500K–1M$1–5M$5M+

Giving History

Grant recipients and amounts by year

No grants recorded for .

Leadership & Key People

Officers and directors from IRS filings

Compensation Overview

From 2024 IRS filing

From 2024 filing

NameTitleHoursCompensation
Omotunde AJ MahoneyPres, Dir, Sec, Treas1

Subject Areas

Focus areas based on grantmaking activity

Related Funders

Similar funders by location and focus area

Data last updated April 2026. Sourced from IRS Form 990-PF filings.

What could you do with The Rhombus Foundation on Grantable?

  • Assess strategic fit with your organization
  • Draft a tailored letter of inquiry
  • Find open RFPs from this funder
  • Monitor for new funding opportunities