Nonprofit · EIN 45-5349929
POPE LEO XIII INSTITUTE INC
Also known as Pope Leo XIII Institute
Tax-exempt · MUNDELEIN, IL 60060
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $451,506 | $378,163 | $73,343 | $859,128 | $29,037 | $830,091 |
| December 31, 2024 | 990 | $411,815 | $371,947 | $39,868 | $761,818 | $5,070 | $756,748 |
| December 31, 2023 | 990 | $578,782 | $482,044 | $96,738 | $716,880 | $0 | $716,880 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $9,048
- Program service revenue
- $420,795
- Investment income
- $21,663
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $0
- Other salaries and wages
- $54,600
- Salaries, compensation and benefits (total)
- $72,584
- Professional fundraising fees
- $0
- Occupancy
- $10,043
- Program services (functional)
- $302,042
- Management and general (functional)
- $76,121
Balance sheet and other
- Total assets, start of year
- $761,818
- Total assets, end of year
- $859,128
- Total liabilities, end of year
- $29,037
- Net assets, end of year
- $830,091
- Net assets without donor restrictions
- $825,001
- Net assets with donor restrictions
- $5,090
- Gross receipts
- $451,506
- Employees
- 1
- Year formed
- 2010
- State of legal domicile
- IL
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 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| REV JAMES MATTALIANO | President Trustee or director, Officer | 0 | $0 |
| REV JOHN B CLOTE | Vice President Trustee or director, Officer | 0 | $0 |
| DEACON TOM GAIDA | Secretary Trustee or director, Officer | 0 | $0 |
| TIM WALLENDER | Treasurer Trustee or director, Officer | 0 | $0 |
| REV MATTHEW NIGGEMEYER | Director Trustee or director | 0 | $0 |
| REV JOHN CELLA | Director Trustee or director | 0 | $0 |
| Cynthia Hunt MD | Director Trustee or director | 0 | $0 |
| TIM EGAN | Director Trustee or director | 0 | $0 |
| REV CLIFF ERMATINGER | Director Trustee or director | 0 | $0 |
| BISHOP JEFFREY GROB | Director Trustee or director | 0 | $0 |
| REV THOMAS HOAR | Director Trustee or director | 0 | $0 |
| REV TIM RIVELLI | Director Trustee or director | 0 | $0 |
| DENISE MARIE SCALZO | Director Trustee or director | 0 | $0 |
| MSGR JOHN ESSEFF | Director Trustee or director | 0 | $0 |
| Rev David Kowalski | Director Trustee or director | 0 | $0 |
3 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Peter Schallmoser | Director Trustee or director | 0 | $0 |
| Robert D Gruss | Director Trustee or director | 0 | $0 |
| Rev Robert-Joel Cruz | Director Trustee or director | 0 | $0 |
990 for the year ended December 31, 2024: 13 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| REV JAMES MATTALIANO | President Trustee or director, Officer | 0 | $0 |
| REV JOHN B CLOTE | Vice President Trustee or director, Officer | 0 | $0 |
| DEACON TOM GAIDA | Secretary Trustee or director, Officer | 0 | $0 |
| TIM WALLENDER | Treasurer Trustee or director, Officer | 0 | $0 |
| REV MATTHEW NIGGEMEYER | Director Trustee or director | 0 | $0 |
| REV JOHN CELLA | Director Trustee or director | 0 | $0 |
| TIM EGAN | Director Trustee or director | 0 | $0 |
| REV CLIFF ERMATINGER | Director Trustee or director | 0 | $0 |
| BISHOP JEFFREY GROB | Director Trustee or director | 0 | $0 |
| REV THOMAS HOAR | Director Trustee or director | 0 | $0 |
| REV TIM RIVELLI | Director Trustee or director | 0 | $0 |
| DENISE MARIE SCALZO | Director Trustee or director | 0 | $0 |
| MSGR JOHN ESSEFF | Director Trustee or director | 0 | $0 |
990 for the year ended December 31, 2023: 14 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| REV JAMES MATTALIANO | President Trustee or director, Officer | 0 | $0 |
| REV JOHN B CLOTE | Vice President Trustee or director, Officer | 0 | $0 |
| DEACON TOM GAIDA | Secretary Trustee or director, Officer | 0 | $0 |
| TIM WALLENDER | Treasurer Trustee or director, Officer | 0 | $0 |
| DAVID Z ABEL | Director Trustee or director | 0 | $0 |
| REV JOHN CELLA | Director Trustee or director | 0 | $0 |
| REV ROBERT - JOEL CRUZ | Director Trustee or director | 0 | $0 |
| TIM EGAN | Director Trustee or director | 0 | $0 |
| REV CLIFF ERMATINGER | Director Trustee or director | 0 | $0 |
| BISHOP JEFFREY GROB | Director Trustee or director | 0 | $0 |
| REV THOMAS HOAR | Director Trustee or director | 0 | $0 |
| REV TIM RIVELLI | Director Trustee or director | 0 | $0 |
| DENISE MARIE SCALZO | Director Trustee or director | 0 | $0 |
| MSGR JOHN ESSEFF | Director Trustee or director | 0 | $0 |
Address and contacts
- Address (IRS master file)
- 1000 E MAPLE AVE, MUNDELEIN, IL 60060-1967
- Mailing address (990-N for 2012)
- 13618 West Meadow Lane, New Berlin WI 53151
- Principal officer (990 for 2025)
- TOM GAIDA
- Principal officer (990-N for 2012)
- Margarett A Schlientz PhD, 13618 West Meadow Lane, New Berlin WI 53151
- Signed the 990
- TOM GAIDA, Secretary
- Phone
- (847) 281-7074
- Return prepared by
- GEORGE ROACH & ASSOC PC
Mission
THIS ORGANIZATION WAS FORMED TO ENGAGE IN CHARITABLE AND EDUCATIONAL ACTIVITIES WITHIN THE MEANING OF SECTION 501(c)(3) OF THE INTERNAL REVENUE CODE. OUR MISSION IS TO BRING THE HEALING LIGHT OF CHRIST TO HELP FREE THOSE AFFLICTED BY THE EVIL ONE.
Program accomplishments
- The Pope Leo XIII Institute serves bishops, priests, exorcists, deacons, and laity. Rooted in the love of the Father who defines the identity of each person, the Pope Leo XIII Institute supports the spiritual formation of priests, preparing their minds and hearts to bring the light of Christ to dispel evil and to heal the wounded and afflicted. The Pope Leo XIII Institute is grounded in the traditions and teachings of the Roman Catholic Church. Within its ministry, the Institute encourages collaboration between the work of bishops, priests, exorcists, and deacons, aided by medical and mental health care professionals. The Institute strives to advance pastoral healing ministry within the Kingdom of God.Expenses $302,042
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. 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 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 45-5349929
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2012
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Religion-related (X22)
- Assets (IRS master file)
- $859,128
- Income (IRS master file)
- $451,506
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $451,506 | $378,163 | $859,128 | XML |
| 990 | December 2024 | $411,815 | $371,947 | $761,818 | XML |
| 990 | December 2023 | $578,782 | $482,044 | $716,880 | XML |
| 990 | December 2022 | $461,108 | $367,483 | $715,342 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2019 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
| 990-N for 2012 Officer: Margarett A Schlientz PhD | December 31, 2012 | ≤ $50,000 receipts | – | – | e-Postcard |
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 45-5349929).
Questions about POPE LEO XIII INSTITUTE INC
- What is the EIN of POPE LEO XIII INSTITUTE INC?
- The employer identification number (EIN) of POPE LEO XIII INSTITUTE INC is 45-5349929.
- Is POPE LEO XIII INSTITUTE INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2012.
- Are donations to POPE LEO XIII INSTITUTE INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does POPE LEO XIII INSTITUTE INC file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of POPE LEO XIII INSTITUTE INC 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 POPE LEO XIII INSTITUTE INC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of POPE LEO XIII INSTITUTE INC?
- The 990 for the year ended December 31, 2025 names TOM GAIDA.
- Who are the officers and directors of POPE LEO XIII INSTITUTE INC?
- The 990 for the year ended December 31, 2025 lists 18 people; 0 received compensation from the organization.
- How much revenue does POPE LEO XIII INSTITUTE INC have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $451,506, expenses of $378,163 and total assets of $859,128 at year end.
Other nonprofits in MUNDELEIN
- TRUTH IS ONE INTERFAITH CHURCH INC EIN 85-1398353 · last filed 990 for 2024
- COPTIC ACADEMY INC EIN 46-5540360 · last filed 990-EZ for 2024
- DARE TO DREAM ONCE MORE INC NFP EIN 82-5399046 · last filed 990-N for 2025
- PRAYERCARES EIN 84-2304105 · last filed 990-N for 2025
- MERGEPOINT EIN 46-0727294 · last filed 990-N for 2025
- KOL HESED USA EIN 27-0546033 · last filed 990-N for 2024
- NATIONAL ASSOCIATION OF CATHOLIC THEOLOGICAL SCHOOLS EIN 46-4699959 · last filed 990-N for 2025
- NOT FORGOTTEN MINISTRY EIN 84-4396862 · last filed 990-N for 2025