Delaware Museum of Nature & Science
The museum is an educational corporation formed to ignite a life-long passion for exploring, discovering, and valuing nature and science.
Delaware Museum of Nature & Science at a glance
In short: Delaware Museum of Nature & Science reported $92K in grants paid in 2025 (a total; its filing lists no individual grants). Source: 2025 IRS Form 990.
- Grants paid (2025)
- $91,630 — reported as a total on the IRS filing, without an itemized list
- +210.1% vs 2024
- Total assets
- $30,238,501
- +2.2% vs 2024
- Revenue (2025)
- $4,962,377
- +93.1% vs 2024
- Net investment income (2025)
- $2,208,554
- +211.2% vs 2024
- Expenses (2025)
- $4,218,911
- +8.0% vs 2024
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated November 2026.
Who Delaware Museum of Nature & Science funds
How this funder distributes its grants
Grant Size Distribution
5 grants across all recorded years
The most common grant size was under $50K: 4 grants of 5 (80%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2022 to 2025, annual grant giving ranged from $30K (2024) to $155K (2022). In 2025 it reported $92K in grants paid, as a total without an itemized list.
Hatched bars: grants paid as reported on the IRS filing, which lists no individual grants for that year.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| University of Miami Coral Gables, FL | Subrecipient of National Science Foundation Grant | $29,545 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $30,238,501 | $4,962,377 | $4,218,911 | $91,630 | Total only | $2,208,554 |
| 2024 | $29,587,265 | $2,569,200 | $3,905,710 | $29,545 | 1 | $709,637 |
| 2023 | $30,156,953 | $2,967,313 | $3,684,316 | $64,994 | 2 | $365,156 |
| 2022 | $29,399,998 | $2,364,916 | $3,177,636 | $155,486 | 2 | $447,322 |
| 2021 | $34,238,280 | $3,600,840 | $2,001,921 | — | — | $650,752 |
| 2020 | $30,767,783 | $2,527,109 | $2,081,872 | — | — | $390,882 |
"Total only": grants paid as reported on the IRS filing, which lists no individual grants for that year.
About Delaware Museum of Nature & Science
Based on IRS filings
Delaware Museum of Nature & Science is a public charity, based in Wilmington, DE. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $30.2M in total assets. In 2025, it reported $92K in grants paid as a total on its IRS filing, without an itemized list. Net investment income was $2.2M.
Leadership & Key People
Officers and directors from IRS filings
Delaware Museum of Nature & Science is led by William H. Spruance, Executive Director since 2025 (on filings since 2020); 3 of 21 officers listed in 2025 are compensated.
Officers on the 2025 filing
William H. Spruance
Executive Director
Executive Director & Trustee Liaison → Executive Director, 2025
On filings since 2020
40 hrs/week
$102K (2020) → $77K (2025)
Mandy Santiago
Executive Director
New on the 2025 filing
40 hrs/week
$114K (2025)
Eda Ross Montgomery PhD
President
Trustee → Vice President, 2022
Vice President → President, 2024
On filings since 2021
1 hr/week
No compensation reported
Michele Harvey
CFO & Operations Director
New on the 2025 filing
40 hrs/week
$101K (2025)
Alok Patel
Trustee
On filings since 2020
1 hr/week
No compensation reported
Edward T. Novak
Trustee
On filings since 2020
1 hr/week
No compensation reported
Ian R. McConnel
Trustee
On filings since 2020
1 hr/week
No compensation reported
Kurt M. Heyman
Trustee
On filings since 2020
1 hr/week
No compensation reported
Timothy B. Weymouth
Trustee
On filings since 2020
1 hr/week
No compensation reported
Deirdre Doherty PhD
Trustee
On filings since 2021
1 hr/week
No compensation reported
Nina Ls Burnaford
Trustee
On filings since 2021
1 hr/week
No compensation reported
Nicholas Brokaw PhD
Trustee
On filings since 2022
1 hr/week
No compensation reported
E. Bradford Du Pont Jr.
Trustee
On filings since 2023
1 hr/week
No compensation reported
Fabrice Veron PhD
Trustee
On filings since 2023
1 hr/week
No compensation reported
Jennifer Kmiec
Trustee
On filings since 2023
1 hr/week
No compensation reported
Myoshi C. Aubain
Trustee
On filings since 2024
1 hr/week
No compensation reported
Michael Hutchinson
Trustee
New on the 2025 filing
1 hr/week
No compensation reported
Rachel Spence Siegel
Trustee
New on the 2025 filing
1 hr/week
No compensation reported
John J. Kirby CPA
Treasurer
Treasurer → Trustee, 2022
Trustee → Treasurer, 2025
On filings since 2020
1 hr/week
No compensation reported
Richard F. Cairns
Vice President
President → Trustee, 2021
Trustee → Vice President, 2024
On filings since 2020
1 hr/week
No compensation reported
Ronald F. Logue
Secretary
New on the 2025 filing
1 hr/week
No compensation reported
Former officers (12)
- Former: David A. Rusenko CPA (2020–2024) — Trustee
- Former: George B. Trammell (2020–2024) — Treasurer
- Former: John S. Larson (2020–2024) — Secretary
- Former: Samuel I. Hyland (2020–2024) — Trustee
- Former: Elyse Ratsep (2022–2024) — Trustee
- Former: Amanda K. Konyk Esq. (2020–2023) — Trustee -
- Former: Ronald F. Logue Cpa Ctfa (2020–2023) — President
- Former: Thomas A. Uebler Esq. (2020–2023) — Trustee
- Former: E. Bradford Dupont Jr. (2020–2021) — Trustee
- Former: Benjamin J. Ledyard JD (2021) — Trustee
- Former: Estella Atekwana PhD (2021) — Trustee
- Former: Jonathan Schoolar (2020) — Trustee
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $114K, to Mandy Santiago (Executive Director Beg 4/25). 3 officers or directors reported compensation on that filing.
Frequently asked questions about Delaware Museum of Nature & Science
How much does Delaware Museum of Nature & Science give each year?
Delaware Museum of Nature & Science reported $92K in grants paid in 2025 on its 2025 IRS Form 990, as a total without an itemized list of grants. In 2024 it gave $30K across 1 grant.
How large is Delaware Museum of Nature & Science?
Delaware Museum of Nature & Science reported $30.2M in total assets on its 2025 IRS Form 990. Its revenue that year was $5.0M.
Where does Delaware Museum of Nature & Science operate?
Delaware Museum of Nature & Science has awarded grants in Connecticut, Florida.
What is Delaware Museum of Nature & Science's EIN?
Delaware Museum of Nature & Science's EIN (Employer Identification Number) is 51-0083535. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated November 2026. Sourced from IRS Form 990 filings.
Data update history
(5)
When this profile's IRS filing data changed on Grantable
- Added Form 990 for fiscal year 2025 (received by the IRS September 21, 2026)
- Updated Form 990 for fiscal year 2022 (received by the IRS June 26, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS June 12, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS August 22, 2025)
- IRS filings on file for fiscal years 2020–2024
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Figures come from Delaware Museum of Nature & Science's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
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