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US nonprofit · EIN 311538837 · New Rochelle, NYiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 311538837) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe tenure.Latest return IRS Form 990 series e-file data - 990 for the year to 31 December 2025: assets, liabilities, staff, website, telephone, pay, related organisations (Schedule R).Finances by year IRS Form 990 e-file data - total revenue and total expenses by tax year.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue (us-approach-v4-clean). Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code SOUNK), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Rockside Foundation

Donations deductible
Revenue
$734
year to 31 December 2025
Expenses
$2.3m
year to 31 December 2025
Total assets
$185k
$0 liabilities
Net assets
$185k
assets less liabilities
Directors and trustees
2
8.4y av
Staff
0
employees, year to 31 December 2025
Left since last filing
0
no seats appear to have opened
Officers and senior staff
3
named in Part VII
How am I connected?

Rockside Foundation's network

2 people1 organisationi2 people and 1 organisation on this map.The large node is the subject of this page. Solid lines are what the register itself records (2). Violet dotted lines (1) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.

The board

2 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations in the tables. The network map shows same-name matches as likely links only, never as confirmed.Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record. The organisation reported 2 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Gregory G GieblerTrustee2018
8 yrs
Michael A CoanCompany secretary2018
8 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

3 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Anthony M McCarthyPresidentsince 2018
Arthur Kim C RiveraTreasurersince 2018
Gregory A ByrnesVice Presidentsince 2018

Pay and hours

year to 31 December 2025iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Gregory A ByrnesVice President0.15$0$67k
Arthur Kim C RiveraTreasurer1$0$64k
Michael A CoanSecretary2$0
Gregory G GieblerTrustee0.15$0
Anthony M McCarthyPresident0.15$0

About

Legal name
Rockside Foundation
EIN
311538837
Address
56 Harrison St Ste 401, New Rochelle, NY, 10801-6560
State
New York
Mission
Support organization (as filed on the Form 990)
Activity (NTEE)
T110 Philanthropy, voluntary services and grantmaking
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Philanthropy, Voluntarism & Grantmaking Foundations
Size band
4 (IRS master file code)
Formed
1997
Principal officer
Anthony M McCarthy (as named on the Form 990)
IRS ruling date
1 September 1997
Status
Code 01 (unconditional exemption)
Form 990 filings on record
7, latest 2024
IRS Publication 78
SOUNK (contributions deductible)

Most connected

Related organisations (Schedule R)

RelatedCharitable, religiousWoodlawn Foundation Inc

Longest observed on the filings

≥8years on the filingsGregory G Giebler
≥8years on the filingsMichael A Coan

Latest return

year to 31 December 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2025. US dollars, as filed.
Total assets
$185k
Total liabilities
$0
Net assets or fund balances
$185k
Contributions and grants received
$0
Program service revenue
$0
Employees
0

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$826k$825k$2k

As filed on the IRS Form 990. US dollars.