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Nonprofit · EIN 26-1623392

MARTIN V ALONZO FOUNDATION

Tax-exempt · GREENWICH, CT 06830

Financials

$39K$14K2022$36K$16K2023$35K$20K2024
Revenue Expenses · by fiscal year end
Financials of MARTIN V ALONZO FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
October 31, 2025990-PF$35,206$20,099$15,107$421,456$0$421,456
October 31, 2024990-PF$36,031$16,070$19,961$406,349$0$406,349
October 31, 2023990-PF$39,108$13,625$25,483$386,388$0$386,388
Financial details: 990-PF for the year ended October 31, 2025

Revenue

Contributions, gifts and grants
$18,000
Dividends
$16,248
Interest
$1,188
Net gain from sales of assets
-$230

Expenses

Grants and similar amounts paid
$17,200
Disbursements for charitable purposes
$17,200
Excise tax on investment income
$202

Balance sheet and other

Total assets, start of year
$406,349
Total assets, end of year
$421,456
Total liabilities, end of year
$0
Net assets, end of year
$421,456
Fair market value of assets
$463,052
Qualifying distributions
$17,200
Net investment income
$17,436

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 October 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
MARLENE ALONZO
40 WEST ELM STREET, GREENWICH, CT 06830
DIRECTOR1$0
990-PF for the year ended October 31, 2024: 1 people
NameTitleHours / weekCompensation
MARLENE ALONZO
40 WEST ELM STREET, GREENWICH, CT 06830
DIRECTOR0.5$0
990-PF for the year ended October 31, 2023: 1 people
NameTitleHours / weekCompensation
MARLENE ALONZO
40 WEST ELM STREET, GREENWICH, CT 06830
DIRECTOR0$0

Address and contacts

Address (IRS master file)
40 WEST ELM STREET, GREENWICH, CT 06830-6425
In care of
% MARTIN V ALONZO
Signed the 990-PF
MARLENE ALONZO, DIRECTOR
Phone
(203) 252-1416
Return prepared by
CHRISTENSEN DEFRUSCIO ALLEN & CO 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 October, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2024October 31, 2025March 16, 2026990-PF on file
2023October 31, 2024March 17, 2025990-PF on file
2022October 31, 2023March 15, 2024990-PF on file

IRS record

EIN
26-1623392
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Private operating foundation
Donations deductible (Pub 78)
Private operating foundation, 50% limit
Exempt since
2008
Accounting year ends
October
Files
Form 990-PF
Category (NTEE)
Education (B82)
Assets (IRS master file)
$421,456
Income (IRS master file)
$56,933

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-PFOctober 2025$35,206$20,099$421,456XML
990-PFOctober 2024$36,031$16,070$406,349XML
990-PFOctober 2023$39,108$13,625$386,388XML
990-PFOctober 2022–––IRS
990-PFOctober 2021–––IRS
990-PFOctober 2020–––IRS
990-PFOctober 2018–––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 26-1623392).

Questions about MARTIN V ALONZO FOUNDATION

What is the EIN of MARTIN V ALONZO FOUNDATION?
The employer identification number (EIN) of MARTIN V ALONZO FOUNDATION is 26-1623392.
Is MARTIN V ALONZO FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2008.
Are donations to MARTIN V ALONZO FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Private operating foundation, 50% limit).
Which annual return does MARTIN V ALONZO FOUNDATION file?
Form 990-PF. Private foundations file every year.
When is the next return of MARTIN V ALONZO FOUNDATION due?
The return for tax year 2025 (the year ending October 31, 2026) is due March 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did MARTIN V ALONZO FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990-PF for the year ended October 2025.
Who are the officers and directors of MARTIN V ALONZO FOUNDATION?
The 990-PF for the year ended October 31, 2025 lists 1 person; 0 received compensation from the organization.
How much revenue does MARTIN V ALONZO FOUNDATION have?
On its 990-PF for the year ended October 31, 2025 it reported revenue of $35,206, expenses of $20,099 and total assets of $421,456 at year end.

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