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Nonprofit · EIN 45-3236734

WATSI

Tax-exempt · SAN FRANCISCO, CA 94104

Financials

$2.2M$1.9M2023$2.3M$2.5M2024
Revenue Expenses · by fiscal year end
Financials of WATSI by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2024990$2,268,111$2,482,900-$214,789$2,244,629$97,766$2,146,863
December 31, 2023990$2,235,950$1,923,645$312,305$2,388,424$27,833$2,360,591
Financial details: 990 for the year ended December 31, 2024

Revenue

Contributions, gifts and grants
$2,265,487
Program service revenue
$0
Investment income
$31
Other revenue
$2,593

Expenses

Grants and similar amounts paid
$1,590,627
Compensation of officers, directors and key employees
$333,107
Other salaries and wages
$212,165
Salaries, compensation and benefits (total)
$616,708
Professional fundraising fees
$0
Accounting fees
$22,000
Travel
$23,234
Depreciation
$363
Program services (functional)
$2,055,429
Management and general (functional)
$227,211
Fundraising (functional)
$200,260

Balance sheet and other

Total assets, start of year
$2,388,424
Total assets, end of year
$2,244,629
Total liabilities, end of year
$97,766
Net assets, end of year
$2,146,863
Land, buildings and equipment
$3,190
Publicly traded securities
$27,181
Net assets without donor restrictions
$1,252,694
Net assets with donor restrictions
$894,169
Gross receipts
$2,268,111
Employees
5
Volunteers
4
Year formed
2011
State of legal domicile
CA

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, 2024, highest compensation first.

NameTitleHours / weekCompensationOther / benefits
MACKINNON ENGENEXECUTIVE DIRECTOR
Officer
40$159,179$63,812
KEENYN MCFARLANECFO
Officer
20$60,231$49,885
MARGARET CORNELIUSCHAIR
Trustee or director, Officer
1$0$0
CHASE ADAMDIRECTOR
Trustee or director
1$0$0
GRACE GAREYDIRECTOR
Trustee or director
1$0$0
RAJ MALIKDIRECTOR
Trustee or director
1$0$0
DR MAHLET KIFLE HABTEMARIAMDIRECTOR (LEFT 2/24)
Trustee or director
1$0$0
990 for the year ended December 31, 2023: 9 people
NameTitleHours / weekCompensationOther / benefits
MACKINNON ENGENEXECUTIVE DIRECTOR
Officer
40$144,748$64,358
G LINKSR. ENGINEER
Highest-paid employee
40$105,792$20,857
KEENYN MCFARLANECFO
Officer
20$54,630$49,729
MARGARET CORNELIUSCHAIR
Trustee or director, Officer
1$0$0
CHASE ADAMDIRECTOR
Trustee or director
1$0$0
GRACE GAREYDIRECTOR
Trustee or director
1$0$0
RAJ MALIKDIRECTOR
Trustee or director
1$0$0
PAUL HUDNUTDIRECTOR
Trustee or director
1$0$0
DR MAHLET KIFLE HABTEMARIAMDIRECTOR
Trustee or director
1$0$0

Address and contacts

Address (IRS master file)
548 MARKET ST 75903, SAN FRANCISCO, CA 94104-5401
Mailing address (990-N for 2011)
100 N North Whisman Road 3913, Mountain View CA 94043
Principal officer (990 for 2024)
MACKINNON ENGEN, 548 MARKET STREET 75903, SAN FRANCISCO, CA 94104
Principal officer (990-N for 2011)
Chase Adam, 100 North Whisman Road 3913, Mountain View CA 94043
Signed the 990
MACKINNON ENGEN, EXECUTIVE DIRECTOR
Phone
(256) 792-8747
Return prepared by
SAX LLP

California records

California keeps its own records of charities and corporations. Search them by EIN 45-3236734 or by the name WATSI.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

Mission

WATSI, INC. IS A SAN FRANCISCO-BASED NON-PROFIT ORGANIZATION THAT DIRECTLY CONNECTS PEOPLE THROUGH TECHNOLOGY TO FUND LIFE-CHANGING HEALTHCARE FOR PATIENTS AROUND THE WORLD. SINCE LAUNCHING IN 2012, THE ORGANIZATION HAS HELPED MORE THAN 30,000 PATIENTS ACROSS 33 COUNTRIES. WATSI, INC.'S INNOVATIVE APPROACH HAS BEEN FEATURED BY THE BBC, THE NEW YORK TIMES, NPR, CNN, THE WALL STREET JOURNAL, AND FAST COMPANY.

990 for the year ended December 31, 2024

Program accomplishments

  • IN 2024, WATSI CONTINUED TO GROW OUR INNOVATIVE, DIRECT, AND RADICALLY TRANSPARENT MODEL SERVING PATIENTS IN NEED OF LIFE-CHANGING HEALTHCARE. WE REACHED 43% MORE PATIENTS THAN THE PREVIOUS YEAR, LAUNCHED OUR NEW EMERGENCY SURGERY PROGRAM, EXPANDED CARE IN ETHIOPIA WITH A NEW MEDICAL PARTNERSHIP, AND SHARED OUR LEARNING TO CHAMPION PEOPLE-POWERED PHILANTHROPY ON THE GLOBAL STAGE. WATSI HAS HELPED MORE THAN 30,000 PATIENTS ACROSS 33 COUNTRIES. AGAIN THIS YEAR, WATSI RECEIVED THE HIGHEST RATINGS AWARDED BY TRUSTED REVIEWERS FOR ACCOUNTABILITY AND TRANSPARENCY.
    Expenses $2,055,429 · grants $1,590,627

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, 2026Not on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
45-3236734
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)
Health care (E12)
Assets (IRS master file)
$2,244,629
Income (IRS master file)
$2,268,111

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2024$2,268,111$2,482,900$2,244,629XML
990December 2023$2,235,950$1,923,645$2,388,424XML
990December 2022$1,588,745$1,762,277$2,178,054IRS
990December 2021–––IRS
990December 2020–––IRS
990September 2018–––IRS
990-N for 2011
Officer: Chase Adam
September 30, 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 45-3236734).

Questions about WATSI

What is the EIN of WATSI?
The employer identification number (EIN) of WATSI is 45-3236734.
Is WATSI tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2012.
Are donations to WATSI tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does WATSI 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 WATSI due?
The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did WATSI last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended December 2024.
Who is the principal officer of WATSI?
The 990 for the year ended December 31, 2024 names MACKINNON ENGEN.
Who are the officers and directors of WATSI?
The 990 for the year ended December 31, 2024 lists 7 people; 2 received compensation from the organization, the highest $159,179 (MACKINNON ENGEN, EXECUTIVE DIRECTOR).
How much revenue does WATSI have?
On its 990 for the year ended December 31, 2024 it reported revenue of $2,268,111, expenses of $2,482,900 and total assets of $2,244,629 at year end.

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