Skip to main content
IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 86-1034071

COALITION FOR ARCHAEOLOGICAL SYNTHESIS

Tax-exempt · TUCSON, AZ 85749

Financials

$302K$414K2023$214K$146K2024$32K$7K2025
Revenue Expenses · by fiscal year end
Financials of COALITION FOR ARCHAEOLOGICAL SYNTHESIS by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$32,221$7,321$24,900$411,933$0$411,933
December 31, 2024990$214,441$145,671$68,770$368,076$25,571$342,505
December 31, 2023990$301,902$414,479-$112,577$365,539$43,131$322,408
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$9,800
Program service revenue
$304
Investment income
$22,117
Net gain from sales of assets
$13,408
Other revenue
$0

Expenses

Grants and similar amounts paid
$0
Salaries, compensation and benefits (total)
$0
Professional fundraising fees
$0
Accounting fees
$2,589
Management and general (functional)
$7,321

Balance sheet and other

Total assets, start of year
$368,076
Total assets, end of year
$411,933
Total liabilities, end of year
$0
Net assets, end of year
$411,933
Publicly traded securities
$393,155
Net assets without donor restrictions
$411,933
Gross receipts
$386,613
Employees
0
State of legal domicile
NM

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
JEFFREY ALTSCHULPRESIDENT
Trustee or director
–$0
KEITH KINTIGHCO-PRESIDENT
Trustee or director
–$0
PETER BIEHLTREASURER
Trustee or director
–$0
SARAH HERRSECRETARY
Trustee or director
–$0
SABINA CVECEKDIRECTOR
Trustee or director
–$0
MICHAEL HEILENDIRECTOR
Trustee or director
–$0
TIMPOKO KIENONDIRECTOR
Trustee or director
–$0
NADEZHDA KECHEVADIRECTOR
Trustee or director
–$0
DARON DUKEDIRECTOR
Trustee or director
–$0
GARY FEINMANDIRECTOR
Trustee or director
–$0
DOUG BAMFORTHDIRECTOR
Trustee or director
–$0
KATARINA BOTICDIRECTOR
Trustee or director
–$0
SHELBY MANNEYDIRECTOR
Trustee or director
–$0
ADAM GREENDIRECTOR
Trustee or director
–$0
990 for the year ended December 31, 2024: 5 people
NameTitleHours / weekCompensation
JEFFREY ALTSCHULPRESIDENT
Trustee or director
–$0
KEITH KINTIGHDIRECTOR
Trustee or director
–$0
CHARLES M NIQUETTEDIRECTOR
Trustee or director
–$0
MARION WERKEISERDIRECTOR
Trustee or director
–$0
TERRY H KLEINEXECUTIVE DI
Officer
–$0
990 for the year ended December 31, 2023: 5 people
NameTitleHours / weekCompensation
JEFFREY ALTSCHULPRESIDENT
Trustee or director
–$0
KEITH KINTIGHDIRECTOR
Trustee or director
–$0
CHARLES M NIQUETTEDIRECTOR
Trustee or director
–$0
MARION WERKEISERDIRECTOR
Trustee or director
–$0
TERRY H KLEINEXECUTIVE DI
Officer
–$0

Address and contacts

Address (IRS master file)
14700 E REDINGTON RD, TUCSON, AZ 85749-9042
In care of
% JEFF ALTSCHUL
Principal officer (990 for 2025)
JEFFREY ALTSCHUL
Signed the 990
JEFFREY ALTSCHUL, PRESIDENT
Phone
(520) 906-2555
Return prepared by
CASTELLANO-PIATT ACCOUNTING

Mission

THE COALITION FOR ARCHAEOLOGICAL SYNTHESIS IS AN ALLIANCE OF PARTNER ORGANIZATIONS AND INDIVIDUAL ASSOCIATES WHO ARE COMMITTED TO FOSTERING SYNTHESIS IN ARCHAEOLOGY TO EXPAND KNOWLEDGE AND BENEFIT SOCIETY.

990 for the year ended December 31, 2025

Program accomplishments

  • DESIGN WORKSHOP AND RESEARCH. BRIDGING ARCHAEOLOGICAL SYNTHESIS AND MACHINE LEARNING FORMALIZES AND DEVELOPS THE CONCEPT OF THE ARCHAEOLOGICAL SYNTHESIS ECOSYSTEM. THIS ECOSYSTEM WILL INCLUDE SPACE FOR RESEARCHERS AND HERITAGE MANAGERS TO DOCUMENT, SHARE, AND CURATE ARCHAEOLOGICALLY FOCUSED MODELS ALONG WITH THEIR TRAINING DATA, AS WELL AS AUTOMATED PATHWAYS TO INTEGRATE DATASETS WITH MACHINE LEARNING MODELS.
  • RESEARCH. URBAN ADAPTATION TO ENVIRONMENTAL CHANGE. THIS RESEARCH IS IN RESPONSE TO THE PRESSING GLOBAL CONVERSATION ON URBAN ADAPTATION TO CLIMATE CHANGE AND FACILITATES A DIALOGUE BETWEEN URBAN ARCHAEOLOGISTS AND NON- ARCHAEOLOGISTS ENGAGED IN THE DESIGN OF ADAPTIVE SOLUTIONS.
  • RESEARCH WORKING GROUP: A LONG-TERM, GLOBAL PERSPECTIVE ON HUMAN MIGRATION. THE GOAL OF THIS RESEARCH WORKING GROUP IS TO DEVELOP A SYNTHETIC MODEL OF THE RELATIONSHIP BETWEEN MIGRATION AND HUMAN SECURITY THAT CAN ASSIST IN THE DEVELOPMENT OF MORE HUMANE AND SUSTAINABLE MIGRATION POLICIES.

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, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
86-1034071
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2002
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$411,933
Income (IRS master file)
$386,613

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$32,221$7,321$411,933XML
990December 2024$214,441$145,671$368,076IRS
990December 2023$301,902$414,479$365,539XML
990December 2022$364,652$509,814$469,216IRS
990December 2021–––IRS
990December 2020–––IRS
990December 2018–––IRS
990December 2017–––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 86-1034071).

Questions about COALITION FOR ARCHAEOLOGICAL SYNTHESIS

What is the EIN of COALITION FOR ARCHAEOLOGICAL SYNTHESIS?
The employer identification number (EIN) of COALITION FOR ARCHAEOLOGICAL SYNTHESIS is 86-1034071.
Is COALITION FOR ARCHAEOLOGICAL SYNTHESIS tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2002.
Are donations to COALITION FOR ARCHAEOLOGICAL SYNTHESIS tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does COALITION FOR ARCHAEOLOGICAL SYNTHESIS 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 COALITION FOR ARCHAEOLOGICAL SYNTHESIS 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 COALITION FOR ARCHAEOLOGICAL SYNTHESIS 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 COALITION FOR ARCHAEOLOGICAL SYNTHESIS?
The 990 for the year ended December 31, 2025 names JEFFREY ALTSCHUL.
Who are the officers and directors of COALITION FOR ARCHAEOLOGICAL SYNTHESIS?
The 990 for the year ended December 31, 2025 lists 14 people; 0 received compensation from the organization.
How much revenue does COALITION FOR ARCHAEOLOGICAL SYNTHESIS have?
On its 990 for the year ended December 31, 2025 it reported revenue of $32,221, expenses of $7,321 and total assets of $411,933 at year end.

Other nonprofits in TUCSON

All nonprofits in TUCSON · Arizona · Science and technology