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Nonprofit · EIN 38-1539304

GREAT LAKES FISHERY COMMISSION

Tax-exempt · ANN ARBOR, MI 48105

Financials

$82.1M$60.8M2022$75.6M$67.6M2023$80.3M$70M2024
Revenue Expenses · by fiscal year end
Financials of GREAT LAKES FISHERY COMMISSION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
September 30, 2025990$80,320,800$69,955,382$10,365,418$99,393,941$1,505,337$97,888,604
September 30, 2024990$75,557,900$67,569,451$7,988,449$89,618,029$1,333,223$88,284,806
September 30, 2023990$82,051,242$60,797,750$21,253,492$81,629,799$1,399,950$80,229,849
Financial details: 990 for the year ended September 30, 2025

Revenue

Contributions, gifts and grants
$68,333,358
of which government grants
$68,333,358
Program service revenue
$0
Investment income
$3,260,116
Other revenue
$8,727,326

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$262,373
Other salaries and wages
$4,808,582
Salaries, compensation and benefits (total)
$6,532,371
Professional fundraising fees
$0
Legal fees
$140,786
Accounting fees
$34,446
Occupancy
$503,515
Travel
$723,462
Program services (functional)
$64,642,291
Management and general (functional)
$5,313,091

Balance sheet and other

Total assets, start of year
$89,618,029
Total assets, end of year
$99,393,941
Total liabilities, end of year
$1,505,337
Net assets, end of year
$97,888,604
Publicly traded securities
$39,791,751
Net assets without donor restrictions
$74,187,429
Net assets with donor restrictions
$23,701,175
Gross receipts
$80,320,800
Employees
34
Volunteers
0
Year formed
1955
State of legal domicile
MI

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 September 30, 2025, highest compensation first.

NameTitleHours / weekCompensationOther / benefits
Marc GadenCommunications Program Director
Key employee
40$251,755$47,578
Stephen DomerackiDirector of Corporate Services
Highest-paid employee
40$246,648$34,733
John DettmersFishery Management Program Director
Highest-paid employee
40$217,757$63,117
Andrew MuirScience Program Director
Highest-paid employee
40$213,669$55,484
Michael SiefkesSea Lamprey Control Program Director
Highest-paid employee
40$206,870$29,009
Jill WingfieldCommunications Program Director
Highest-paid employee
40$167,825$52,257
Robert LambeExecutive Secretary
Key employee, Former
40$151,185$420
Dr Robert HeckyCommissioner
Trustee or director
3$0$0
Ethan BakerCommissioner
Trustee or director
3$0$0
Earl ProvostCommissioner
Trustee or director
3$0$0
Kendra WeckerCommissioner
Trustee or director
3$0$0
Karen DiverCommissioner
Trustee or director
3$0$0
Niall CroninCommissioner
Trustee or director
3$0$0
Jane GrahamCommissioner
Trustee or director
3$0$0
Shannon EstenozCommissioner
Trustee or director
3$0$0
1 more people on this return
NameTitleHours / weekCompensation
Kevin BrousseauCommissioner
Trustee or director
3$0
990 for the year ended September 30, 2024: 15 people
NameTitleHours / weekCompensationOther / benefits
Robert LambeExecutive Secretary
Key employee
40$281,215$28,614
John DettmersFishery Management Program Director
Highest-paid employee
40$211,354$64,689
Stephen DomerackiDirector of Corporate Services
Highest-paid employee
40$233,455$32,796
Andrew MuirScience Program Director
Highest-paid employee
40$210,736$53,002
Marc GadenCommunications Program Director
Highest-paid employee
40$218,270$41,895
Michael SiefkesSea Lamprey Control Program Director
Highest-paid employee
40$200,881$28,117
Dr William TaylorCommissioner
Trustee or director
3$0$0
James McKaneCommissioner
Trustee or director
3$0$0
Ethan BakerCommissioner
Trustee or director
3$0$0
Earl ProvostCommissioner
Trustee or director
3$0$0
Jean-Guy ForgeronCommissioner
Trustee or director
3$0$0
Dr Robert HeckyCommissioner
Trustee or director
3$0$0
Kendra WeckerCommissioner
Trustee or director
3$0$0
Karen DiverCommissioner
Trustee or director
3$0$0
Shannon EstenozCommissioner
Trustee or director
3$0$0
990 for the year ended September 30, 2023: 15 people
NameTitleHours / weekCompensationOther / benefits
Robert LambeExecutive Secretary
Key employee
40$263,754$27,031
John DettmersFishery Management Program Director
Highest-paid employee
40$193,856$64,255
Andrew MuirScience Program Director
Highest-paid employee
40$194,485$54,137
Stephen DomerackiDirector of Corporate Services
Highest-paid employee
40$210,652$29,511
Marc GadenCommunications Program Director
Highest-paid employee
40$200,903$37,409
Michael SiefkesSea Lamprey Control Program Director
Highest-paid employee
40$182,647$25,783
Dr William TaylorCommissioner
Trustee or director
3$0$0
James McKaneCommissioner
Trustee or director
3$0$0
Ethan BakerCommissioner
Trustee or director
3$0$0
Earl ProvostCommissioner
Trustee or director
3$0$0
Jean-Guy ForgeronCommissioner
Trustee or director
3$0$0
Dr Robert HeckyCommissioner
Trustee or director
3$0$0
Kendra WeckerCommissioner
Trustee or director
3$0$0
Karen DiverCommissioner
Trustee or director
3$0$0
Shannon EstenozCommissioner
Trustee or director
3$0$0

Address and contacts

Address (IRS master file)
2200 COMMONWEALTH BLVD STE 100, ANN ARBOR, MI 48105-2957
Principal officer (990 for 2024)
Marc Gaden, 2200 Commonwealth Blvd Suite 100, Ann Arbor, MI 48105
Signed the 990
Sean Martineau, Financial Accounting Manager
Phone
(734) 662-3209

Mission

The Great Lakes Fishery Commission is an international treaty organization established in 1955 by the Canadian/U.S. Convention on Great Lakes Fisheries. The commission coordinates fisheries research, controls the invasive sea lamprey, and facilitates cooperative fishery management among the state, provincial, tribal, and federal agencies.

990 for the year ended September 30, 2025

Program accomplishments

  • Research Program - Research contracts, workshops, and task forces were elements of a coordinated program of the Great Lakes Research Program designed to recommend to the U.S. and Canadian federal governments the measures needed to permit maximum sustained productivity of fish stocks.
    Expenses $16,146,253
  • Sea Lamprey Management Program - Great Lakes Fishery Commission contracts annually with the U.S. Fish and Wildlife Service, the U.S. Geological Survey, and Fisheries and Oceans Canada to conduct a program that eradicates or minimizes sea lamprey populations in the Great Lakes. This is a current and long-term goal. Lampricides are chemicals used as the major means of controlling sea lamprey in the commission's ongoing program of sea lamprey management in the Great Lakes. These chemicals are purchased annually.
    Expenses $21,700,728
  • Infrastructure - The Great Lakes Fishery Commission relies on physical infrastructure in its programs including 1) sea lamprey barriers, 2) sea lamprey traps, 3) biological stations, 4) workspace, and 5) researcher accommodations. Sea lamprey barriers are extremely cost-effective and provide an assumed 50-year life span. Barriers are used as a means of controlling sea lamprey by blocking streams and rivers in which they migrate to spawn. These are current and long-term projects.
    Expenses $9,050,031
  • Professional development, memberships, sponsorships, along with Lake Champlain and CARES Act II expenditures. Lake Champlain is explained on Schedule O. All other functional expenses related to running programs.
    Expenses $17,745,279

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 September, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025September 30, 2026February 16, 2027Not due yet
2024September 30, 2025February 17, 2026990 on file
2023September 30, 2024February 18, 2025990 on file

IRS record

EIN
38-1539304
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Supporting organization (509(a)(3))
Donations deductible (Pub 78)
Supporting organization of unknown type
Exempt since
1987
Accounting year ends
September
Files
Form 990 or 990-EZ
Category (NTEE)
Animal-related (D330)
Assets (IRS master file)
$99,393,941
Income (IRS master file)
$80,320,800

Filing history

FormYear endedRevenueExpensesAssetsReturn
990September 2025$80,320,800$69,955,382$99,393,941XML
990September 2024$75,557,900$67,569,451$89,618,029XML
990September 2023$82,051,242$60,797,750$81,629,799XML
990September 2022$69,757,299$67,856,628$61,148,709IRS
990September 2021$63,473,145$55,868,723$59,405,138IRS

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 38-1539304).

Questions about GREAT LAKES FISHERY COMMISSION

What is the EIN of GREAT LAKES FISHERY COMMISSION?
The employer identification number (EIN) of GREAT LAKES FISHERY COMMISSION is 38-1539304.
Is GREAT LAKES FISHERY COMMISSION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1987.
Are donations to GREAT LAKES FISHERY COMMISSION tax-deductible?
Yes. It is listed in IRS Publication 78 (Supporting organization of unknown type).
Which annual return does GREAT LAKES FISHERY COMMISSION 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 GREAT LAKES FISHERY COMMISSION due?
The return for tax year 2025 (the year ending September 30, 2026) is due February 16, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did GREAT LAKES FISHERY COMMISSION last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended September 2025.
Who is the principal officer of GREAT LAKES FISHERY COMMISSION?
The 990 for the year ended September 30, 2025 names Marc Gaden.
Who are the officers and directors of GREAT LAKES FISHERY COMMISSION?
The 990 for the year ended September 30, 2025 lists 16 people; 7 received compensation from the organization, the highest $251,755 (Marc Gaden, Communications Program Director).
How much revenue does GREAT LAKES FISHERY COMMISSION have?
On its 990 for the year ended September 30, 2025 it reported revenue of $80,320,800, expenses of $69,955,382 and total assets of $99,393,941 at year end.

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