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Nonprofit · EIN 84-5178467

SOPHIES NEIGHBORHOOD

Tax-exempt · BOULDER, CO 80304

Financials

$228K$267K2023$133K$109K2024
Revenue Expenses · by fiscal year end
Financials of SOPHIES NEIGHBORHOOD by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
April 30, 2025990$133,087$109,440$23,647$1,020,557$0$1,020,557
April 30, 2024990$228,297$267,334-$39,037$996,910$0$996,910
Financial details: 990 for the year ended April 30, 2025

Revenue

Contributions, gifts and grants
$212,516
Program service revenue
$0
Investment income
-$79,347
Net gain from sales of assets
-$109,247
Net income from fundraising events
-$82
Other revenue
-$82

Expenses

Grants and similar amounts paid
$95,522
Salaries, compensation and benefits (total)
$0
Professional fundraising fees
$0
Legal fees
$263
Accounting fees
$3,013
Travel
$612
Program services (functional)
$101,120
Management and general (functional)
$7,203
Fundraising (functional)
$1,117

Balance sheet and other

Total assets, start of year
$996,910
Total assets, end of year
$1,020,557
Total liabilities, end of year
$0
Net assets, end of year
$1,020,557
Publicly traded securities
$685,687
Gross receipts
$935,987
Employees
0
Volunteers
5
Year formed
2020
State of legal domicile
CO

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 April 30, 2025, highest compensation first.

NameTitleHours / weekCompensation
BLAKE SEDBERRYBOARD MEMBER
Trustee or director
2$0
MICHAEL WEINSTEINBOARD MEMBER
Trustee or director
2$0
HOSEA ROSENBERGVICE PRESIDE
Officer
5$0
LAUREN ROSENBERGPRESIDENT-CE
Officer
25$0
990 for the year ended April 30, 2024: 4 people
NameTitleHours / weekCompensation
BLAKE SEDBERRYBOARD MEMBER
Trustee or director
2$0
MICHAEL WEINSTEINBOARD MEMBER
Trustee or director
2$0
HOSEA ROSENBERGVICE PRESIDE
Officer
5$0
LAUREN ROSENBERGPRESIDENT-CE
Officer
25$0

Address and contacts

Address (IRS master file)
3215 5TH ST, BOULDER, CO 80304-2149
In care of
% LAUREN ROSENBERG
Mailing address (990-N for 2019)
3215 5TH STREET, BOULDER CO 80304
Principal officer (990 for 2024)
LAUREN ROSENBERG, PO BOX 7461, BOULDER, CO 80306
Principal officer (990-N for 2019)
LAUREN ROSENBERG, 3215 5TH STREET, BOULDER CO 80304
Signed the 990
LAUREN ROSENBERG, PRESIDENT-CEO
Phone
(646) 275-7881
Return prepared by
BOULDER CPA GROUP

Mission

SOPHIE'S NEIGHBORHOOD IS A NONPROFIT DEDICATED TO FUNDRAISING FOR RESEARCH INTO THE DEVELOPMENT OF AN EFFECTIVE TREATMENT OR CURE FOR AN ULTRA RARE GENETIC DISORDER: MULTICENTRIC CARPOTARSAL OSTEOLYSIS (MCTO)

990 for the year ended April 30, 2025

Program accomplishments

  • DURING THE FISCAL YEAR ENDING APRIL 2025, SOPHIE'S NEIGHBORHOOD FUNDED MAJOR RESEARCH INITIATIVES TO ADVANCE UNDERSTANDING AND TREATMENT OF MULTICENTRIC CARPO-TARSAL OSTEOLYSIS (MCTO) AN ULTRA RARE GENETIC BONE AND KIDNEY DISORDER. 1.ADVANCING MCTO DISEASE MECHANISMS THROUGH INNOVATIVE MOUSE MODELS SOPHIE'S NEIGHBORHOOD SUPPORTED RESEARCH AT HARVARD SCHOOL OF DENTAL MEDICINE INVESTIGATING BONE REMODELING ACTIVITY AND CELLULAR CHANGES MAFB MOUSE MODELS OF MCTO. THIS WORK INCLUDES TRANSCRIPTOMIC ANALYSES OF CELLS AND TISSUES WITHIN THE SKELETAL MICROENVIRONMENT TO UNCOVER MOLECULAR MECHANISMS DRIVING DISEASE PROGRESSION. 2.EXPANDING STEM CELL-BASED AND DEVELOPMENTAL MODELS OF MCTO IN COLLABORATION WITH BOSTON CHILDREN'S HOSPITAL, SOPHIE'S NEIGHBORHOOD CONTINUED TO FUND STUDIES ON MAFB AND DEVELOPMENTAL CHONDROGENESIS. THESE EFFORTS ADVANCE STEM CELL-BASED MODELS OF MCTO AND IDENTIFY KEY TRANSCRIPTIONAL NETWORKS INVOLVED IN BONE AND CARTILAGE DEVELOPMENT. 3.ESTABLISHING CRITICAL RESEARCH INFRASTRUCTURE FOR RARE DISEASE DISCOVERY SOPHIE'S NEIGHBORHOOD SUPPORTED THE CREATION AND ONGOING MAINTENANCE OF MCTO MOUSE LINES WITH SPECIFIC MAFB MUTATIONS AT THE JACKSON LABORATORY. THESE SPECIALIZED MODELS ENABLE RESEARCHERS TO TEST HYPOTHESES RELATED TO MAFB PROTEIN ACCUMULATION AND DISEASE PATHOLOGY, STRENGTHENING THE FOUNDATION FOR FUTURE THERAPEUTIC RESEARCH. 4.INITIATE ANTISENSE OLIGONUCLEOTIDE (ASO) DEVELOPMENT AND SCREENING TO EVALUATE THERAPEUTIC EFFICACY IN CELLULAR AND MOUSE MODELS, WITH THE GOAL OF REVERSING BONE AND KIDNEY PHENOTYPES ASSOCIATED WITH MCTO.
    Expenses $101,120 · grants $95,522

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 April, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025April 30, 2026September 15, 2026Not on file
2024April 30, 2025September 15, 2025990 on file
2023April 30, 2024September 16, 2024990 on file

IRS record

EIN
84-5178467
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
2020
Accounting year ends
April
Files
Form 990 or 990-EZ
Category (NTEE)
Health care (E12)
Assets (IRS master file)
$1,020,557
Income (IRS master file)
$935,987

Filing history

FormYear endedRevenueExpensesAssetsReturn
990April 2025$133,087$109,440$1,020,557XML
990April 2024$228,297$267,334$996,910XML
990April 2023$236,226$82,038$1,035,947IRS
990April 2022–––IRS
990April 2021–––IRS
990-N for 2019
Officer: LAUREN ROSENBERG
April 30, 2020≤ $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 84-5178467).

Questions about SOPHIES NEIGHBORHOOD

What is the EIN of SOPHIES NEIGHBORHOOD?
The employer identification number (EIN) of SOPHIES NEIGHBORHOOD is 84-5178467.
Is SOPHIES NEIGHBORHOOD tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2020.
Are donations to SOPHIES NEIGHBORHOOD tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does SOPHIES NEIGHBORHOOD 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 SOPHIES NEIGHBORHOOD due?
The return for tax year 2025 (the year ending April 30, 2026) is due September 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did SOPHIES NEIGHBORHOOD last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended April 2025.
Who is the principal officer of SOPHIES NEIGHBORHOOD?
The 990 for the year ended April 30, 2025 names LAUREN ROSENBERG.
Who are the officers and directors of SOPHIES NEIGHBORHOOD?
The 990 for the year ended April 30, 2025 lists 4 people; 0 received compensation from the organization.
How much revenue does SOPHIES NEIGHBORHOOD have?
On its 990 for the year ended April 30, 2025 it reported revenue of $133,087, expenses of $109,440 and total assets of $1,020,557 at year end.

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