DOOR COUNTY MARITIME MUSEUM & LIGHTHOUSE PRESERVATION SOCIETY IN

EIN 23-7054730 STURGEON BAY, WI

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Revenue 2025: $3,327,206
Expenses 2025: $2,237,933

Program services were 73.3% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection: 03
NTEE code: A500
Classification: 2000
Street: 120 N MADISON AVE

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2025

Mission

PRESERVE GREAT LAKES MARITIME HISTORY, PRIMARILY FOCUSING ON DOOR COUNTY, WISCONSIN AND PROVIDE INTERPRETIVE AND EDUCATIONAL OPPORTUNITIES FOR CURRENT AND FUTURE GENERATIONS.

Activities or mission (Part I)

PRESERVE GREAT LAKES MARITIME HISTORY THROUGH INTERPRETIVE AND EDUCATIONAL OPPORTUNITIES.

PROVIDE DOOR COUNTY WISCONSIN RESIDENTS AND TOURISTS WITH THREE MUSEUMS DEVOTED TO THE HISTORICAL PRESERVATION OF MARITIME HISTORY OF THE GREAT LAKES AND CONTINUE TO EDUCATE THE PUBLIC THROUGH VARIOUS PROGRAMS, SPECIAL EVENTS AND OTHER EDUCATIONAL OPPORTUNITIES.

Expenses $1,640,319 · Revenue $1,255,395

As filed on the 2025 return.

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

Mike WickmanMIKE WICKMAN

DIRECTOR

Total calculated

$0

Hours/week

1
Bob Purves Thru July 2025BOB PURVES THRU JULY 2025

DIRECTOR

Total calculated

$0

Hours/week

1
Charles HenriksenCHARLES HENRIKSEN

DIRECTOR

Total calculated

$0

Hours/week

1
Thomas Cap WulfTHOMAS CAP WULF

DIRECTOR

Total calculated

$0

Hours/week

1
Mike GilsonMIKE GILSON

DIRECTOR

Total calculated

$0

Hours/week

1
John BaumgartnerJOHN BAUMGARTNER

DIRECTOR

Total calculated

$0

Hours/week

1
Cheryl Arnott Thru Sept 2025CHERYL ARNOTT THRU SEPT 2025

DIRECTOR

Total calculated

$0

Hours/week

1
Bob DenotoBOB DENOTO

BOARD CHAIR

Total calculated

$0

Hours/week

10
Alison WalkerALISON WALKER

VICE PRESIDENT

Total calculated

$0

Hours/week

10
Gary KingGARY KING

PAST CHAIR

Total calculated

$0

Hours/week

1
John AsherJOHN ASHER

DIRECTOR

Total calculated

$0

Hours/week

1
Nathan Dineen Thru Sept 2025NATHAN DINEEN THRU SEPT 2025

DIRECTOR

Total calculated

$0

Hours/week

1
David SchanockDAVID SCHANOCK

DIRECTOR

Total calculated

$0

Hours/week

1
Pam SeilerPAM SEILER

SECRETARY

Total calculated

$0

Hours/week

1
Kevin O'DonnellKEVIN O'DONNELL

DIRECTOR

Total calculated

$0

Hours/week

1
Greg HolubGREG HOLUB

DIRECTOR

Total calculated

$0

Hours/week

1
Dean StewartDEAN STEWART

DIRECTOR

Total calculated

$0

Hours/week

1
Keith MillerKEITH MILLER

TREASURER

Total calculated

$0

Hours/week

1
Stephanie PropsomSTEPHANIE PROPSOM

DIRECTOR

Total calculated

$0

Hours/week

1
Richard OsgoodRICHARD OSGOOD

EXECUTIVE DIRECTOR

Total calculated

$117,862

From this org

$117,862

From related orgs

$0

Other

$0

Hours/week

40

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

2025

Revenue

$3,327,206

Expenses

$2,237,933

Contributions

$1,708,952

Grants paid

$0
2023

Revenue

$2,927,104

Expenses

$1,983,522

Contributions

$1,686,726

Grants paid

$0
2022

Revenue

$3,126,391

Expenses

$1,870,506

Contributions

$2,037,847

Grants paid

$0

Tax year	Revenue	Expenses	Contributions	Grants paid
2025	$3,327,206	$2,237,933	$1,708,952	$0
2023	$2,927,104	$1,983,522	$1,686,726	$0
2022	$3,126,391	$1,870,506	$2,037,847	$0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

2025 · 990-T

Revenue

not reported

Expenses

not reported

Assets (EOY)

not reported
2023 · 990-T

Revenue

not reported

Expenses

not reported

Assets (EOY)

not reported
2022 · 990-T

Revenue

not reported

Expenses

not reported

Assets (EOY)

not reported
2021 · 990

Revenue

$3,874,583

Expenses

$1,400,896

Assets (EOY)

$12,430,907
2021 · 990-T

Revenue

not reported

Expenses

not reported

Assets (EOY)

not reported
2020 · 990

Revenue

$1,852,699

Expenses

$1,099,885

Assets (EOY)

$11,471,655
2019 · 990

Revenue

$2,306,229

Expenses

$1,256,570

Assets (EOY)

$7,244,787
2018 · 990

Revenue

$2,005,393

Expenses

$1,345,904

Assets (EOY)

$5,756,424
2017 · 990

Revenue

$1,210,387

Expenses

$1,176,235

Assets (EOY)

$5,231,256
2016 · 990

Revenue

$2,485,527

Expenses

$956,868

Assets (EOY)

$5,155,607

Tax year	Form	Revenue	Expenses	Assets (EOY)
2025	990-T	not reported	not reported	not reported
2023	990-T	not reported	not reported	not reported
2022	990-T	not reported	not reported	not reported
2021	990	$3,874,583	$1,400,896	$12,430,907
2021	990-T	not reported	not reported	not reported
2020	990	$1,852,699	$1,099,885	$11,471,655
2019	990	$2,306,229	$1,256,570	$7,244,787
2018	990	$2,005,393	$1,345,904	$5,756,424
2017	990	$1,210,387	$1,176,235	$5,231,256
2016	990	$2,485,527	$956,868	$5,155,607

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

COMMUNITY FOUNDATION FOR THE FOX VALLEY REGION INC

$150,000

2023 A: ARTS, CULTURE & HUMANITIES
BOLDT FAMILY FUND INC

$142,316

2023 ARTS, CULTURE & HUMANITIES
DOOR COUNTY COMMUNITY FOUNDATION INC

$56,342

2023 CHARITABLE
DOOR COUNTY COMMUNITY FOUNDATION INC

$12,598

2022 CHARITABLE
GREATER GREEN BAY COMMUNITY FOUNDATION INC

$7,500

2022 HEALTH AND WELLNESS PROGRAM SUPPORT
DOOR COUNTY COMMUNITY FOUNDATION INC

$7,055

2024 CHARITABLE
BOLDT FAMILY FUND INC

$5,077

2024 ARTS, CULTURE & HUMANITIES
DONOR ADVISED CHARITABLE GIVING

$5,050

2022 ARTS, CULTURE & HUMANITIES

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 1 November 2026, for every organization at once. Returns through tax year 2025, the newest we have parsed for this organization.