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COASTAL MAINE BOTANICAL GARDENS INC

EIN 01-0476545 BOOTHBAY, ME

Largest nonprofits in Maine

Revenue 2024
$28,580,119
Expenses 2024
$12,681,186

Program services were 51.8% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
C410
Classification
1000
Street
PO BOX 234

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 · 2024

Mission

The mission of Coastal Maine Botanical Gardens, Inc. is to inspire meaningful connections among people and nature and promote plant conservation through horticulture, education, and plant science.

Activities or mission (Part I)

To inspire connections among people and nature through horticulture, education, and research.

  • Incorporated as a non-profit in 1992, Coastal Maine Botanical Gardens (CMBG) opened in 2007 as Maine's first major botanical garden. At 325 acres, seventeen of which include themed and ornamental gardens, woodland trails, with nearly a mile of tidal shorefront, it is the largest public garden in Northern New England. The Gardens feature the Lyn and Daniel Lerner Visitor Center, a curated garden shop, and a cafe and grab-and-go market. CMBG offers educational programs encompassing plant science, gardening, botanical arts, and environmental education in our LEED-platinum, net-zero Bosarge Family Educational Center. Each of the Gardens' buildings also house administrative offices. CMBG remains an economic engine for the State of Maine, attracting 331,442 visitors to the Boothbay region during this tax year.

    Expenses $6,570,320 · Grants $5,750 · Revenue $7,951,761

As filed on the 2024 return.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • John Auber

    Director

    Total calculated
    $0
    Hours/week
    1
  • Karen Bartholomew

    Director

    Total calculated
    $0
    Hours/week
    1
  • Abra Lee

    Director

    Total calculated
    $0
    Hours/week
    1
  • Todd Leland

    Director (start 1/2025)

    Total calculated
    $0
    Hours/week
    1
  • Jeff Long

    Director

    Total calculated
    $0
    Hours/week
    1
  • Keith Mestrich

    Director

    Total calculated
    $0
    Hours/week
    1
  • Helen Norton

    Director

    Total calculated
    $0
    Hours/week
    1
  • Luc Nya

    Director

    Total calculated
    $0
    Hours/week
    1
  • Kirsten Poler

    Director

    Total calculated
    $0
    Hours/week
    1
  • Margaret Reiser

    Director

    Total calculated
    $0
    Hours/week
    1
  • Beth Renyi

    Director

    Total calculated
    $0
    Hours/week
    1
  • David Rines

    Director

    Total calculated
    $0
    Hours/week
    1
  • Paula Swetland

    Director

    Total calculated
    $0
    Hours/week
    1
  • Mary Neal

    Chair

    Total calculated
    $0
    Hours/week
    7
  • Mark Osborn

    Chair Elect

    Total calculated
    $0
    Hours/week
    1
  • Paul Goodof

    Treasurer

    Total calculated
    $0
    Hours/week
    1
  • Ann Poole

    Secretary

    Total calculated
    $0
    Hours/week
    1
  • Gretchen Ostherr

    President & CEO

    Total calculated
    $327,311
    From this org
    $284,495
    From related orgs
    $0
    Other
    $42,816
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $269,495
    Bonus
    $15,000
    Other
    $0
    Deferred
    $11,438
    Nontaxable benefits
    $31,378
    Filer's total
    $327,311
  • Jennifer McKane

    VP of Philantropy & Marketing

    Total calculated
    $187,950
    From this org
    $157,292
    From related orgs
    $0
    Other
    $30,658
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $124,792
    Bonus
    $32,500
    Other
    $0
    Deferred
    $6,657
    Nontaxable benefits
    $24,001
    Filer's total
    $187,950
  • Amy Root

    Senior Philanthropy Advisor

    Total calculated
    $165,831
    From this org
    $130,350
    From related orgs
    $0
    Other
    $35,481
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $112,800
    Bonus
    $17,550
    Other
    $0
    Deferred
    $5,805
    Nontaxable benefits
    $29,676
    Filer's total
    $165,831
  • Daniel Ungier

    VP of Guest Experience and Education

    Total calculated
    $150,577
    From this org
    $113,478
    From related orgs
    $0
    Other
    $37,099
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $113,478
    Bonus
    $0
    Other
    $0
    Deferred
    $5,196
    Nontaxable benefits
    $31,903
    Filer's total
    $150,577
  • Melissa Cullina

    VP of Plants and Science

    Total calculated
    $107,324
    From this org
    $102,128
    From related orgs
    $0
    Other
    $5,196
    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. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $28,580,119
    Expenses
    $12,681,186
    Contributions
    $19,802,022
    Grants paid
    $5,750
  • 2023
    Revenue
    $12,789,794
    Expenses
    $11,026,074
    Contributions
    $5,641,720
    Grants paid
    $6,400
  • 2022
    Revenue
    $19,371,398
    Expenses
    $10,425,042
    Contributions
    $12,577,558
    Grants paid
    $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

  • 2021 · 990

    Revenue
    $23,280,988
    Expenses
    $8,808,170
    Assets (EOY)
    $58,317,312
  • 2020 · 990

    Revenue
    $6,781,712
    Expenses
    $7,454,082
    Assets (EOY)
    $44,454,198
  • 2019 · 990

    Revenue
    $12,315,092
    Expenses
    $8,014,204
    Assets (EOY)
    $44,417,439
  • 2015 · 990

    Revenue
    $4,339,142
    Expenses
    $3,847,970
    Assets (EOY)
    $20,855,820
  • 2013 · 990

    Revenue
    $2,863,374
    Expenses
    $2,981,903
    Assets (EOY)
    $21,334,700
  • 2012 · 990

    Revenue
    not reported
    Expenses
    $2,766,978
    Assets (EOY)
    $21,342,993
  • 2011 · 990

    Revenue
    not reported
    Expenses
    $2,489,906
    Assets (EOY)
    $21,081,652
  • 2010 · 990

    Revenue
    not reported
    Expenses
    $2,179,484
    Assets (EOY)
    $19,652,626

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.

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

The 10 largest by cash amount. The API serves every itemized grant.

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 2024, the newest we have parsed for this organization.