Nonprofit · EIN 51-6017455
MT CUBA ASTRONOMICAL OBSERVATORY INC HILLSIDE MILL ROAD
Tax-exempt · WILMINGTON, DE 19807
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $2,861,504 | $521,390 | $2,340,114 | $16,328,586 | $0 | $16,328,586 |
| December 31, 2024 | 990-PF | $471,606 | $558,845 | -$87,239 | $13,988,023 | $0 | $13,988,023 |
| December 31, 2023 | 990-PF | -$489,008 | $443,998 | -$933,006 | $14,076,646 | $1,384 | $14,075,262 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $33,345
- Dividends
- $110,731
- Net gain from sales of assets
- $2,696,980
- Other income
- $20,448
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $0
- Salaries, compensation and benefits (total)
- $37,976
- Disbursements for charitable purposes
- $342,202
- Excise tax on investment income
- $36,536
Balance sheet and other
- Total assets, start of year
- $13,988,023
- Total assets, end of year
- $16,328,586
- Total liabilities, end of year
- $0
- Net assets, end of year
- $16,328,586
- Fair market value of assets
- $23,868,623
- Qualifying distributions
- $423,952
- Net investment income
- $2,807,711
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990-PF for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| THEODORE H ASHFORD ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| JOHN GIZIS ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| DAVID GROSKI ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | CHAIRMAN | 1 | $0 |
| THEODORE H ASHFORD III ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TREASURER | 1 | $0 |
| DANIEL D FRIEL JR ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| SCOTT C JACKSON ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| CHARLES J HOWARDIII ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | SECRETARY | 1 | $0 |
| ALEXANDER MACLACHLAN ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| ROBERT UNGER ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
990-PF for the year ended December 31, 2024: 10 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| THEODORE H ASHFORD ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| JOHN GIZIS ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| DAVID GROSKI ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | CHAIRMAN | 1 | $0 |
| THEODORE H ASHFORD III ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TREASURER | 1 | $0 |
| DANIEL D FRIEL JR ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | SECRETARY | 1 | $0 |
| SCOTT C JACKSON ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| CHARLES J HOWARDIII ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| HARRY L SHIPMAN ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| ALEXANDER MACLACHLAN ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| ROBERT UNGER ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
990-PF for the year ended December 31, 2023: 7 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| THEODORE H ASHFORD ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| JOHN GIZIS ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| DAVID GROSKI ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | CHAIRMAN | 1 | $0 |
| THEODORE H ASHFORD III ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TREASURER | 1 | $0 |
| DANIEL D FRIEL JR ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | SECRETARY | 1 | $0 |
| SCOTT C JACKSON ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
| CHARLES J HOWARDIII ONE WALKERS MILL ROAD, WILMINGTON, DE 19807 | TRUSTEE | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 1 WALKE, WILMINGTON, DE 19807-0000
- In care of
- % ASHFORD CAPITAL MANAGEMENT INC
- Signed the 990-PF
- THEODORE ASHFORD, TRUSTEE
- Phone
- (302) 655-1750
- Website
- WWW.PHYSICS.UDEL.EDU/MCAO/
- Return prepared by
- AKA ADVISORY LLC
What it must file and when
IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990-PF on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-PF on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-PF on file |
IRS record
- EIN
- 51-6017455
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Private non-operating foundation
- Donations deductible (Pub 78)
- Private foundation, 30% limit
- Exempt since
- 2020
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Science and technology (U31)
- Assets (IRS master file)
- $16,328,586
- Income (IRS master file)
- $10,046,393
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $2,861,504 | $521,390 | $16,328,586 | XML |
| 990-PF | December 2024 | $471,606 | $558,845 | $13,988,023 | IRS |
| 990-PF | December 2023 | -$489,008 | $443,998 | $14,076,646 | XML |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-PF | December 2020 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 51-6017455).
Questions about MT CUBA ASTRONOMICAL OBSERVATORY INC HILLSIDE MILL ROAD
- What is the EIN of MT CUBA ASTRONOMICAL OBSERVATORY INC HILLSIDE MILL ROAD?
- The employer identification number (EIN) of MT CUBA ASTRONOMICAL OBSERVATORY INC HILLSIDE MILL ROAD is 51-6017455.
- Is MT CUBA ASTRONOMICAL OBSERVATORY INC HILLSIDE MILL ROAD tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2020.
- Are donations to MT CUBA ASTRONOMICAL OBSERVATORY INC HILLSIDE MILL ROAD tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does MT CUBA ASTRONOMICAL OBSERVATORY INC HILLSIDE MILL ROAD file?
- Form 990-PF. Private foundations file every year.
- When is the next return of MT CUBA ASTRONOMICAL OBSERVATORY INC HILLSIDE MILL ROAD due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did MT CUBA ASTRONOMICAL OBSERVATORY INC HILLSIDE MILL ROAD last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended December 2025.
- Who are the officers and directors of MT CUBA ASTRONOMICAL OBSERVATORY INC HILLSIDE MILL ROAD?
- The 990-PF for the year ended December 31, 2025 lists 9 people; 0 received compensation from the organization.
- How much revenue does MT CUBA ASTRONOMICAL OBSERVATORY INC HILLSIDE MILL ROAD have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $2,861,504, expenses of $521,390 and total assets of $16,328,586 at year end.
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