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

Nonprofit · EIN 87-4391116

SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS

Tax-exempt · DOVER, DE 19901

Financials

$325K$93K2023$9.2M$3.7M2024
Revenue Expenses · by fiscal year end
Financials of SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2024990$9,205,437$3,700,264$5,505,173$7,869,327$25,975$7,843,352
December 31, 2023990$325,324$93,291$232,033$232,033$0$232,033
Financial details: 990 for the year ended December 31, 2024

Revenue

Contributions, gifts and grants
$9,045,745
Program service revenue
$107,344
Investment income
$52,348
Other revenue
$0

Expenses

Grants and similar amounts paid
$429,894
Other salaries and wages
$605,351
Salaries, compensation and benefits (total)
$712,519
Professional fundraising fees
$0
Legal fees
$17,772
Program services (functional)
$2,924,661
Management and general (functional)
$548,974
Fundraising (functional)
$226,629

Balance sheet and other

Total assets, start of year
$232,033
Total assets, end of year
$7,869,327
Total liabilities, end of year
$25,975
Net assets, end of year
$7,843,352
Net assets without donor restrictions
$2,676,384
Net assets with donor restrictions
$5,166,968
Gross receipts
$9,205,437
Employees
7
Volunteers
35
Year formed
2021
State of legal domicile
DE

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 / weekCompensation
ERICA TOBYN KIERSEXECUTIVE DIR & BOARD DIR
Trustee or director, Officer
30$271,580
JASON CREMERIUSCHIEF STRATEGY & OPERATIONS OFFICER
Key employee
32$255,470
ADRIANA CORRALESLEAD RESEARCH SCIENTIST
Highest-paid employee
40$136,295
BETHAN MANLEYLEAD COMPUTATIONAL BIOLOGIST
Highest-paid employee
40$126,282
MICHAEL VAN NULANDLEAD DATA SCIENTIST
Highest-paid employee
40$120,000
KELCIE WALTHERPR AND MEDIA RELATIONS LEAD
Highest-paid employee
40$115,665
JORDAN YOUNGDESIGN LEAD
Highest-paid employee
40$107,059
MARK TERCEKBOARD CHAIR
Trustee or director
2$0
JEREMY GRANTHAMBOARD DIRECTOR
Trustee or director
2$0
ROSE MARCARIOBOARD DIRECTOR
Trustee or director
2$0
990 for the year ended December 31, 2023: 4 people
NameTitleHours / weekCompensationFrom related orgs
ERICA TOBYN KIERSEXECUTIVE DIRECTOR
Officer
25$0$246,602
ROSE MARCARIOBOARD DIRECTOR
Trustee or director
2$0$0
JEREMY GRANTHAMBOARD DIRECTOR
Trustee or director
2$0$0
MARK TERCEKBOARD DIRECTOR
Trustee or director
2$0$0

Address and contacts

Address (IRS master file)
3500 SOUTH DUPONT HIGHWAY STE EI 10, DOVER, DE 19901-6041
In care of
% ERICA TOBYN KIERS
Mailing address (990-N for 2022)
3500 S Dupont Hwy Suite EI 101, Dover DE 19901
Principal officer (990 for 2024)
ERICA TOBYN KIERS, TWEEDE JAN VAN DER HEIJDENSTRAAT, AMSTERDAM, AMSTERDAM 1074 XX, NL
Principal officer (990-N for 2022)
Steve Mendelsohn, 100 Riverside Dr 13E, New York NY 10024
Signed the 990
ERICA TOBYN KIERS, EXECUTIVE DIR
Phone
(212) 724-2993
Return prepared by
Ketcham & Associates LLC

Mission

SPUNs mission is to map and advocate for the protection of the mycorrhizal networks that regulate the Earths climate and ecosystems. (Continued Schedule O)

990 for the year ended December 31, 2024

Program accomplishments

  • SPUNs mission is to map and advocate for the protection of the mycorrhizal networks that regulate the Earths climate and ecosystems. We accomplish this by mapping the mycorrhizal fungal networks of planet earth, advocating for the protection of underground ecosystems, and driving innovation in underground climate and biodiversity science.
    Expenses $2,924,661 · grants $429,894

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
87-4391116
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
2024
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$7,869,327
Income (IRS master file)
$9,205,437

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2024$9,205,437$3,700,264$7,869,327IRS
990December 2023$325,324$93,291$232,033XML
990-N for 2022
Officer: Steve Mendelsohn
December 31, 2022≤ $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 87-4391116).

Questions about SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS

What is the EIN of SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS?
The employer identification number (EIN) of SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS is 87-4391116.
Is SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2024.
Are donations to SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS 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 SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS 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 SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS 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 SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS?
The 990 for the year ended December 31, 2024 names ERICA TOBYN KIERS.
Who are the officers and directors of SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS?
The 990 for the year ended December 31, 2024 lists 10 people; 7 received compensation from the organization, the highest $271,580 (ERICA TOBYN KIERS, EXECUTIVE DIR & BOARD DIR).
How much revenue does SOCIETY FOR THE PROTECTION OF UNDERGROUND NETWORKS have?
On its 990 for the year ended December 31, 2024 it reported revenue of $9,205,437, expenses of $3,700,264 and total assets of $7,869,327 at year end.

Other nonprofits in DOVER

All nonprofits in DOVER · Delaware · Science and technology