MAMMOTH SITE OF HOT SPRINGS (EIN 460337824) - Form 990 Financial Analysis & Trantor Score

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Tuckman-Chang Vulnerability Assessment

4 risk indicators measuring financial stability and operational resilience

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Financial Trends

Organization Details

Formation Year

1975

Legal Domicile

Principal Officer

JOHN PENCE

Phone

6057456017

Tax Period

2024-11-01 to 2025-10-31

MAMMOTH SITE OF HOT SPRINGS SOUTH DAKOTA INC, founded in 1975, is a community nonprofit in the Arts, Culture & Humanities sector that reported $1.5M in total revenue in fiscal year 2017. Expenses of $1.5M left a modest 3% surplus.

Mission

THE MISSION OF THE ORGANIZATION IS THE PRESERVATION, RESEARCH, AND INTERPRETATION OF THE MAMMOTH SITE OF HOT SPRINGS, SOUTH DAKOTA, AND DEVELOPMENT OF A BROAD UNDERSTANDING OF THE LATE ICE AGE RECORD ACROSS A GLOBAL FRAMEWORK.

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Trantor Score

Financial Health & Payment Capacity Assessment (FICO Scale: 300–850)

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Liquidity (40%) • Solvency (30%) • Sustainability (20%) • Efficiency (10%)

Financial Overview (2024)

Revenue Breakdown

Contributions & Grants $175,869

Program Service Revenue $1,089,217

Investment Income $67,851

Other Revenue $285,567

TOTAL REVENUE $1,618,504

Expense Breakdown

Grants Paid $0

Salaries & Benefits $949,899

Fundraising Expenses $99,315

Program Expenses $1,323,851

Other Expenses $734,259

TOTAL EXPENSES $1,684,158

Year-over-Year Comparison

	2024	2023	Change
Revenue	$1,618,504	$1,820,239	-0.1%
Expenses	$1,684,158	$1,775,170	-0.1%
Net Income	$-65,654	$45,069	-2.5%

Key Indicators

✗ Grants to Organizations ✗ Grants to Individuals ✗ Lobbying ✗ Political Activity ✗ Foreign Activities ✗ Donor Advised Fund ✓ Schedule B Required

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Financial Health Indicators

Comprehensive financial analysis: Altman Z-Score, liquidity, solvency, sustainability, efficiency, and growth metrics

Financial Distress Indicator

Liquidity & Cash Position

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Altman Z-Score • Liquidity Ratios • Solvency Analysis • Growth Indicators • Efficiency Metrics

Governance

Voting Members

Independent Members

Employees

Volunteers

100

Governance Policies

✗ Conflict of Interest Policy

✗ Whistleblower Policy

✗ Document Retention Policy

Special Practices & Reported Activities

✗ Operated a School

✗ Operated a Hospital

✗ Provided First Class Travel

✗ Reported Conflict of Interest

✗ Reported Asset Diversion

✗ Excess Benefit Transaction

✗ Made Political Expenditures

✗ Engaged in Lobbying

✗ Operated Donor Advised Fund

✓ Maintained Art Collections

✗ Filed Form 720

Compensation of Officers, Directors & Key Employees

Total Officers

Total Directors

Key Employees

Highest Compensated

reported

Name	Title	Hours/Week	Role	Reportable Comp	Other Comp	Total
CALEB ARCENEAUX	SECRETARY	1.00	Officer Director	$0	$0	$0
TIA BERENS	MEMBER	1.00	Director	$0	$0	$0
RICK DENHERDER	MEMBER	1.00	Director	$0	$0	$0
JANE FARRELL	LEGAL ADVISO	1.00	Director	$0	$0	$0
GREG GUNWALL	MEMBER	1.00	Director	$0	$0	$0
TERRY HINN	VICE PRESIDE	1.00	Officer Director	$0	$0	$0
DR MIKE LEITE	MEMBER	1.00	Director	$0	$0	$0
ANNA MERRILL	MEMBER	1.00	Director	$0	$0	$0
JOHN PENCE	PRESIDENT	1.00	Officer Director	$0	$0	$0
ROBERT PREUSS	TREASURER	1.00	Officer Director	$0	$0	$0
RANDY SCHUR	MEMBER	1.00	Director	$0	$0	$0
AMY SPEARS	MEMBER	1.00	Director	$0	$0	$0

Note: Compensation data is self-reported by the organization on their Form 990. "Reportable Comp" includes salary, bonuses, and other reportable compensation from the organization and related organizations. "Other Comp" includes benefits, deferred compensation, and non-taxable benefits.

Historical Data

Year	Revenue	Expenses	Assets	Net Income
2025	$1,618,504	$1,684,158	$6,458,752	$-65,654
2023	$1,828,957	$1,809,928	$5,979,441	$19,029
2022	$1,811,077	$1,852,547	$5,897,905	$-41,470
2021	$4,895,194	$1,607,069	$6,303,738	$3,288,125
2020	$995,096	$1,448,811	$3,821,342	$-453,715
2019	$1,663,333	$1,547,449	$3,947,875	$115,884
2018	$1,533,034	$1,481,009	$3,847,566	$52,025

MAMMOTH SITE OF HOT SPRINGS