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Nonprofit · EIN 33-4977881

CASSILHAUS FOSTER ARTS

Tax-exempt · DURHAM, NC 27701

Financials

$388K$47K2025
Revenue Expenses · by fiscal year end
Financials of CASSILHAUS FOSTER ARTS by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$388,418$46,709$341,709$381,671$39,962$341,709
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$387,690
Program service revenue
$0
Investment income
$728
Other revenue
$0

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$0
Salaries, compensation and benefits (total)
$0
Professional fundraising fees
$15,006
Legal fees
$10,187
Management and general (functional)
$31,703
Fundraising (functional)
$15,006

Balance sheet and other

Total assets, start of year
$0
Total assets, end of year
$381,671
Total liabilities, end of year
$39,962
Net assets, end of year
$341,709
Publicly traded securities
$364,900
Net assets without donor restrictions
$341,709
Gross receipts
$388,418
Employees
0
Volunteers
0
Year formed
2025
State of legal domicile
NC

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.

NameTitleHours / weekCompensation
FRANK KONHAUSPRESIDENT
Trustee or director, Officer
20$0
MORT OSULLIVANTREASURER
Trustee or director, Officer
2$0
ELLEN CASSILLYSECRETARY
Trustee or director, Officer
10$0
JENNIFER NEWVICE PRESIDENT
Trustee or director, Officer
1$0
AKILAH SMALLWOODBOARD MEMBER
Trustee or director
1$0

Address and contacts

Address (IRS master file)
600 FOSTER ST, DURHAM, NC 27701-1887
In care of
% FRANK KONHAUS
Principal officer (990 for 2025)
FRANK KONHAUS, 6301 MIMOSA DR, CHAPEL HILL, NC 27514
Signed the 990
Frank Konhaus, President
Phone
(919) 616-0555

Mission

Cassilhaus Foster Arts advances artistic creativity cultural engagement and community connection through artist residencies exhibitions educational programming stewardship of a contemporary art collection and library and the creation of publicly accessible arts and garden spaces. Building on sixteen years of founder-supported programming CFA provides free or low-cost opportunities for artists and the public to create learn exhibit and engage with the arts.

990 for the year ended December 31, 2025

Program accomplishments

  • During its first year of operation Cassilhaus Foster Arts focused on organizational development activities to prepare for launching its charitable arts programs. This included governance and board development strategic planning fundraising community outreach program design site planning for its future Durham arts campus and the establishment of policies partnerships and administrative infrastructure to support artist residencies exhibitions educational programming and public arts engagement.0
  • During its initial year Cassilhaus Foster Arts conducted community outreach cultural research and relationship-building activities with artists arts organizations educational institutions civic leaders and community stakeholders throughout downtown Durham and the surrounding region. These activities supported the development of a cultural inventory identification of potential program partners and cultivation of collaborative relationships to inform the launch of future artist residencies exhibitions educational programming and public arts initiatives.0

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 yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990 on file
2024December 31, 2024May 15, 2025Check at the IRS
2023December 31, 2023May 15, 2024Check at the IRS

IRS record

EIN
33-4977881
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
2025
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$381,671
Income (IRS master file)
$388,418

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$388,418$46,709$381,671XML

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 33-4977881).

Questions about CASSILHAUS FOSTER ARTS

What is the EIN of CASSILHAUS FOSTER ARTS?
The employer identification number (EIN) of CASSILHAUS FOSTER ARTS is 33-4977881.
Is CASSILHAUS FOSTER ARTS tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2025.
Are donations to CASSILHAUS FOSTER ARTS tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does CASSILHAUS FOSTER ARTS 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 CASSILHAUS FOSTER ARTS 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 CASSILHAUS FOSTER ARTS 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 CASSILHAUS FOSTER ARTS?
The 990 for the year ended December 31, 2025 names FRANK KONHAUS.
Who are the officers and directors of CASSILHAUS FOSTER ARTS?
The 990 for the year ended December 31, 2025 lists 5 people; 0 received compensation from the organization.
How much revenue does CASSILHAUS FOSTER ARTS have?
On its 990 for the year ended December 31, 2025 it reported revenue of $388,418, expenses of $46,709 and total assets of $381,671 at year end.

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