Mt Cuba Astronomical Observatory Inc
Mt Cuba Astronomical Observatory Inc is a private foundation focused on Science & Technology, based in Wilmington, DE. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $16.3M in total assets. In 2025, it made $424K in qualifying distributions. Net investment income was $2.6M.
Mt Cuba Astronomical Observatory Inc at a glance
- Total assets
- $16,328,586
- +16.7% vs 2024
- Revenue (2025)
- $2,861,504
- +506.8% vs 2024
- Qualifying distributions (2025)
- $423,952
- -28.0% vs 2024
- Expenses (2025)
- $521,390
- -6.7% vs 2024
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026.
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|
| 2025 | $16,328,586 | $2,861,504 | $521,390 | $423,952 | $2,628,523 | $822,213 |
| 2024 | $13,988,023 | $471,606 | $558,845 | $588,666 | $264,986 | — |
| 2023 | $14,076,646 | $-489,008 | $443,998 | $501,584 | — | — |
| 2022 | $15,013,446 | $-1,173,613 | $433,450 | $506,768 | — | — |
| 2021 | $16,620,594 | $1,762,388 | $570,002 | $1,869,812 | $1,345,780 | — |
| 2020 | $15,430,211 | $3,862,799 | $451,429 | — | $3,675,413 | — |
Under IRS private-foundation payout rules, Mt Cuba Astronomical Observatory Inc reported a distributable amount of $822K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Mt Cuba Astronomical Observatory Inc is led by David Groski, Chairman on every filing since 2020; none of the 9 officers listed in 2025 report compensation.
Officers on the 2025 filing
David Groski
Chairman
On filings since 2020
1 hr/week
No compensation reported
Alexander Maclachlan
Trustee
On filings since 2020
1 hr/week
No compensation reported
Daniel D. Friel Jr.
Trustee
Secretary → Trustee, 2025
On filings since 2020
1 hr/week
No compensation reported
John Gizis
Trustee
On filings since 2020
1 hr/week
No compensation reported
Scott C. Jackson
Trustee
On filings since 2020
1 hr/week
No compensation reported
Theodore H. Ashford
Trustee
On filings since 2020
1 hr/week
No compensation reported
Robert Unger
Trustee
On filings since 2024
1 hr/week
No compensation reported
Charles J. Howardiii
Secretary
Trustee → Secretary, 2025
On filings since 2020
1 hr/week
No compensation reported
Theodore H. Ashford III
Treasurer
On filings since 2020
1 hr/week
No compensation reported
Former officers (2)
- Former: Harry L. Shipman (2020–2024) — Trustee
- Former: Irenee Du Pont (2020–2022) — 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.
Frequently asked questions about Mt Cuba Astronomical Observatory Inc
How large is Mt Cuba Astronomical Observatory Inc?
Mt Cuba Astronomical Observatory Inc reported $16.3M in total assets on its 2025 IRS Form 990-PF. It paid out $424K in qualifying distributions that year, against a required minimum of $822K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
What is Mt Cuba Astronomical Observatory Inc?
Mt Cuba Astronomical Observatory Inc is a private foundation focused on Science & Technology, based in Wilmington, DE. It holds $16.3M in total assets as of 2025.
What is Mt Cuba Astronomical Observatory Inc's EIN?
Mt Cuba Astronomical Observatory Inc's EIN (Employer Identification Number) is 51-6017455. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated October 2026. Sourced from IRS Form 990-PF filings.
Data update history
(2)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2025 (received by the IRS June 15, 2026)
- IRS filings on file for fiscal years 2020–2024
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