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US nonprofit · EIN 131628179 · New York, NYiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 131628179) - 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 time served.Latest return IRS Form 990 series e-file data - 990 for the year to 30 June 2025: assets, liabilities, staff, website, telephone, pay, related organisations (Schedule R), grants paid (Schedule I).Renewal outlook Computed by Governance Register from the observed filing history and filed revenue. Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.State registers Colorado Secretary of State (17 October 2026).Licence US Federal Government public domain.How we handle data

Kosciuszko Foundation Inc

Donations deductible
Revenue
$3.7m
year to 30 June 2025
Expenses
$4.5m
year to 30 June 2025
Total assets
$58.1m
$124k liabilities
Net assets
$58m
assets less liabilities
Directors and trustees
27
6.4 years on average
Staff
12
30 volunteers
Chair observed
≥3 yrs
Alex Storozynski
Left since last filing
0
no seats appear to have opened
How am I connected?

Kosciuszko Foundation Inc's network

27 people3 organisationsi27 people and 3 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (27). Violet dotted lines (5) 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

27 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.Time served and departures are observed across annual filings. Observed time served is a lower bound - a member may have joined before the first year on record. The organisation reported 24 voting members of its governing body on its latest Form 990 Part VI; we list 27 in Part VII (Part VII does not always name every voting member).
NameRole as filedSinceOn the board
Alex Storozynski ChairChairman2020
6 yrs
Alexander KoproskiTrustee2020
6 yrs
Andrzej RojekVice-Chairman2020
6 yrs
Arthur SzymanskiTrustee2020
6 yrs
Bolek RyzinskiTrustee2020
6 yrs
Christopher Kolasa MDTrustee - Thru December 20222020
6 yrs
Cynthia Rosicki ESQVice-Chairman2020
6 yrs
Dr EWA RadwanskaTrustee2020
6 yrs
Dr Marek PienkowskiTrustee2020
6 yrs
Hanna Chroboczek KelkerphdTrustee2020
6 yrs
Henry Sikorski PHDTrustee2020
6 yrs
Joseph E Gore ESQCorporate secretary2020
6 yrs
Joseph SwiaderTrustee - Thru Oct 20222020
6 yrs
Krzysztof RostekTrustee2020
6 yrs
Marian A Kornilowicz ESQTrustee2020
6 yrs
Michal MrozekTrustee2020
6 yrs
Miroslaw Brys MD PHDTrustee2020
6 yrs
Peter S NovakTreasurer - Thru April 20232020
6 yrs
Piotr ChomczynskiTrustee2020
6 yrs
Prof Waldemar PriebeTrustee2020
6 yrs
Rachael JaroshTrustee2020
6 yrs
Sigmund RolatTrustee2020
6 yrs
Stephen KusmierczakTrustee2020
6 yrs
Wanda M SenkoVice-Chairman2020
6 yrs
Wlodek Mandecki PHDTrustee2020
6 yrs
Wojciech UzdelewiczTrustee2020
6 yrs
Zbigniew ChrzanowskiTrustee2020
6 yrs
Under 5 years5 to 6 years6 years or moreShow all 27 →

Officers and senior leadership

1 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Marek SkulimowskiPres. & Exec. Dir.since 2020

Pay and hours

year to 30 June 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
Marek SkulimowskiPres. & Exec. Dir.40$171k$28k
Joseph E Gore EsqCorporate Secretary Until Nov 20241$0
Wanda M SenkoTrustee1$0
Cynthia Rosicki EsqVice-Chairman1$0
Hanna Chroboczek KelkerphdTrustee1$0
Alexander KoproskiTrustee Thru June 19, 20251$0
Marian A Kornilowicz EsqTrustee1$0
Krystyna PiorkowskaTrustee1$0
Ewa Radwanska MD PhDTrustee1$0
Wojciech JackowskiTrustee Since April1$0
Wojciech UzdelewiczTrustee1$0
Michal MrozekTrustee1$0
Alex StorozynskiChairman5$0
Andrzej RojekVice-Chairman and Treasure1$0
Piotr Chomczynski PhDTrustee1$0
Prof Waldemar PriebeTrustee1$0
Stephen KusmierczakVice Chairman1$0
Jerzy CzubakTrustee1$0
Rachael JaroshTrustee1$0
Henry Sikorski PhDTrustee1$0
Wlodek Mandecki PhDTrustee1$0
Marek Pienkowski MD PhDTrustee1$0
Miroslaw Brys MD PhDTrustee1$0
Arthur SzymanskiTrustee1$0
Sabastian PostTrustee1$0
Bolek RyzinskiTrustee Thru Nov 241$0
Zbigniew ChrzanowskiTrustee1$0
Robert DziublowskiTrustee1$0
Zbigniew Inglot PhDTrustee Elected April 20251$0
Bozena Nowicka McLeesTrustee Elected April 20251$0

Colorado roster

27 listediOfficers, directors and trustees from the latest filing with the Colorado Secretary of State (document 20263014771). Titles are as filed; some entries are registered agents or custodians of records rather than board members. Source: data.colorado.gov, public domain.
NameTitle as filed
Andrzej RojekVice Chair
Peter Chomczynski, Ph.D.Trustee
Henry Sikorski, Ph.D.Trustee
Sebastian PostTrustee
Wojciech JackowskiTrustee
Hanna Chroboczek Kelker, Ph.D.Trustee
Marian A. Kornilowicz, Esq.Trustee
Zbigniew Inglot, Ph.D.Trustee
Stephen KusmierczakTrustee
Krzysztof Lyson, MD., PhD.Trustee
Waldemar RaczkowskiTrustee
Marek Pienkowski, M.D., Ph.D.Trustee
Alex StorozynskiChairman of the Board of Trustees
Waldemar Priebe, DTrustee
Jerzy CzubakTrustee
Michal MrozekTrustee
Joseph E. Gore, Esq.Corporate Secretary
Robert DziublowskiTrustee
Marek Skulimowski
Wojciech UzdelewiczTrustee
Miroslaw Brys, M.D., Ph.D.Trustee
Wlodek Mandecki, Ph.D.Trustee
Rachael A. JaroshTrustee
Arthur SzymanskiTrustee
Ewa RadwanskaTrustee
Zbigniew ChrzanowskiTrustee
Bozena Nowicka McLeesTrustee

About

Legal name
Kosciuszko Foundation Inc
EIN
131628179
Address
15 E 65th St, New York, NY, 10065-6501
State
New York
Mission
Founded in 1925, the kosciuszko foundation is dedicated to promoting and strengthening understanding and friendship between the peoples of poland and the united states through educational, scientific and cultural exchanges and other related programs and activities. It awards fellowships and grants to graduate students, scholars, scientists, professionals and artists and helps to increase... (as filed on the Form 990)
Activity (NTEE)
Q122 International, foreign affairs and national security
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
International, Foreign Affairs & National Security
Size band
9 (IRS master file code)
Formed
1925
Principal officer
Marek Skulimowski (as named on the Form 990)
IRS ruling date
1 January 1950
Status
Code 01 (unconditional exemption)
Form 990 filings on record
4, latest 2023
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥6years on the filingsAlex Storozynski
≥6years on the filingsAlexander Koproski
≥6years on the filingsAndrzej Rojek
≥6years on the filingsArthur Szymanski

Latest return

year to 30 June 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 30 June 2025. US dollars, as filed.
Total assets
$58.1m
Total liabilities
$124k
Net assets or fund balances
$58m
Contributions and grants received
$1.6m
Program service revenue
$632k
Grants and similar paid out
$1.9m
Employees
12
Volunteers
30

Grants paid

1 listediFrom Schedule I of the Form 990: grants and assistance to organisations in the United States, largest first (up to 25). Schedule I is filed only by organisations that gave more than $5,000 to any one recipient.
RecipientPurposeAmount
Loyola University of ChicagoScholarships$16k