Nonprofit · EIN 23-2355887
MACK TRUCKS HISTORICAL MUSEUM
Tax-exempt · ALLENTOWN, PA 18103
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $119,944 | $107,792 | $12,152 | $194,356 | $0 | $194,356 |
| December 31, 2024 | 990 | $111,489 | $66,943 | $44,546 | $182,205 | $0 | $182,205 |
| December 31, 2023 | 990 | $224,904 | $250,259 | -$25,355 | $137,659 | $0 | $137,659 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $118,155
- Program service revenue
- $0
- Investment income
- $1,789
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Management and general (functional)
- $107,792
Balance sheet and other
- Total assets, start of year
- $182,205
- Total assets, end of year
- $194,356
- Total liabilities, end of year
- $0
- Net assets, end of year
- $194,356
- Gross receipts
- $119,944
- Employees
- 0
- Year formed
- 1984
- State of legal domicile
- PA
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 |
|---|---|---|---|
| Maurice Oppe | President Trustee or director, Officer | 0 | $0 |
| Stan Janis | Treasurer Trustee or director, Officer | 0 | $0 |
| Terry Grube | Secretary Trustee or director, Officer | 0 | $0 |
| Nicole Deemer | Vice President Trustee or director, Officer | 0 | $0 |
| Gerald M Barr | Attorney Trustee or director | 0 | $0 |
| Jerry Noll | Chairman Trustee or director | 0 | $0 |
| Brent Cring | Member Trustee or director | 0 | $0 |
| Scott Freeman | Member Trustee or director | 0 | $0 |
| Dean Bestwick | Member Trustee or director | 0 | $0 |
| David Galbraith | Member Trustee or director | 0 | $0 |
| Will Wingo | Member Trustee or director | 0 | $0 |
| Charles Wissinger | Member Trustee or director | 0 | $0 |
990 for the year ended December 31, 2024: 12 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Maurice Oppe | President Trustee or director, Officer | 0 | $0 |
| Stan Janis | Treasurer Trustee or director, Officer | 0 | $0 |
| Terry Grube | Secretary Trustee or director, Officer | 0 | $0 |
| Nicole Deemer | Vice President Trustee or director, Officer | 0 | $0 |
| Jerry Noll | Chairman Trustee or director | 0 | $0 |
| Gerald M Barr | Attorney Trustee or director | 0 | $0 |
| Dean Bestwick | Member Trustee or director | 0 | $0 |
| David Galbraith | Member Trustee or director | 0 | $0 |
| Brent Cring | Member Trustee or director | 0 | $0 |
| Todd Kuder | Member Trustee or director | 0 | $0 |
| Will Wingo | Member Trustee or director | 0 | $0 |
| Charles Wissinger | Member Trustee or director | 0 | $0 |
990 for the year ended December 31, 2023: 12 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Maurice Oppe | President Trustee or director, Officer | 0 | $0 |
| Terry Grube | Secretary Trustee or director, Officer | 0 | $0 |
| Stan Janis | Treasurer Trustee or director, Officer | 0 | $0 |
| Jerry Noll | Chairman Trustee or director | 0 | $0 |
| Nicole Deemer | Vice President Trustee or director, Officer | 0 | $0 |
| Gerald M Barr | Attorney Trustee or director | 0 | $0 |
| Will Wingo | Member Trustee or director | 0 | $0 |
| Dean Bestwick | Member Trustee or director | 0 | $0 |
| Brent Cring | Member Trustee or director | 0 | $0 |
| Todd Kuder | Member Trustee or director | 0 | $0 |
| Charles Wissinger | Member Trustee or director | 0 | $0 |
| David Galbraith | Member Trustee or director | 0 | $0 |
Address and contacts
- Address (IRS master file)
- 2402 LEHIGH PKWY S, ALLENTOWN, PA 18103-2900
- Principal officer (990 for 2025)
- Maurice Oppe, 2402 Lehigh Parkway South, Allentown, PA 18103
- Signed the 990
- Maurice Oppe, President
- Phone
- (610) 351-8999
- Return prepared by
- Allyn International Services Inc
Mission
Accumulate and display memorabilia including antique trucks & parts.
Program accomplishments
- The Mack Historical Museum is the repository of historical documents and artifacts from Mack's long and storied history as the leading American truck manufacturer and world-renowned brand name. The collection and curators at the Mack Museum connect Mack enthusiasts and casual visitors alike to the rich legacy of "The Greatest Name in Trucks."Expenses $107,792 · revenue $119,943
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
- 23-2355887
- 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
- 1986
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Arts, culture and humanities (A540)
- Assets (IRS master file)
- $194,356
- Income (IRS master file)
- $119,944
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $119,944 | $107,792 | $194,356 | XML |
| 990 | December 2024 | $111,489 | $66,943 | $182,205 | IRS |
| 990 | December 2023 | $224,904 | $250,259 | $137,659 | XML |
| 990 | December 2022 | $129,410 | $137,852 | $163,013 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | 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 23-2355887).
Questions about MACK TRUCKS HISTORICAL MUSEUM
- What is the EIN of MACK TRUCKS HISTORICAL MUSEUM?
- The employer identification number (EIN) of MACK TRUCKS HISTORICAL MUSEUM is 23-2355887.
- Is MACK TRUCKS HISTORICAL MUSEUM tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1986.
- Are donations to MACK TRUCKS HISTORICAL MUSEUM tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does MACK TRUCKS HISTORICAL MUSEUM 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 MACK TRUCKS HISTORICAL MUSEUM 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 MACK TRUCKS HISTORICAL MUSEUM 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 MACK TRUCKS HISTORICAL MUSEUM?
- The 990 for the year ended December 31, 2025 names Maurice Oppe.
- Who are the officers and directors of MACK TRUCKS HISTORICAL MUSEUM?
- The 990 for the year ended December 31, 2025 lists 12 people; 0 received compensation from the organization.
- How much revenue does MACK TRUCKS HISTORICAL MUSEUM have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $119,944, expenses of $107,792 and total assets of $194,356 at year end.
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