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NATIONAL TROPICAL BOTANICAL GARDEN

EIN 52-6057064 KALAHEO, HI

Browse the largest nonprofits in Hawaii

Revenue 2024
$29,167,793
Expenses 2024
$14,417,543

Program services were 83.1% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
C410
Classification
2000
Street
3530 PAPALINA RD

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

TO ENRICH LIFE BY PERPETUATING TROPICAL PLANTS, ECOSYSTEMS AND CULTURAL HERITAGE THROUGH DISCOVERY, SCIENTIFIC RESEARCH, CONSERVATION, AND EDUCATION.

  • Withheld by Nonprofiteer: this text may name a private individual.

    Expenses $5,754,435 · Revenue $2,358,280

  • SCIENCE & CONSERVATION: THIS PROGRAM IS FOCUSED ON PROTECTING & CONSERVING TROPICAL PLANTS. OUR FIELD BOTANISTS SURVEY MANY AREAS IN HAWAII TO ASSESS THREATS TO NATIVE SPECIES & COLLECT SEEDS & CUTTINGS FOR PROPOGATION, & ARE EITHER OUTPLANTED,PRESERVED IN THE HERBARIUM OR PLACED IN SEED STORAGE. NTBGS SEED BANK CONTAINS MORE THAN 18.5 MILLION SEEDS OF MORE THAN 943 TAXA. THE BOTANICAL RESEARCH CENTER IS THE HOME FOR THE GARDENS HERBARIUM, SEED BANK & A RARE BOOK LIBRARY THAT IS TEMPERATURE & HUMIDITY CONTROLLED & HOLDS OVER 1,200 VOLUMES OF BOOKS-SOME THAT DATE BACK TO THE 1500S. THESE COLLECTIONS ARE CRUCIAL FOR OUR RESEARCH, PUBLICATIONS AND EDUCATIONAL PROGRAMS. THE GARDENS BREADFRUIT INSTITUTE MANAGES THE LARGEST & MOST DIVERSE COLLECTION OF BREADFRUIT SPECIES & VARIETIES IN THE WORLD, WITH OVER 120 VARIETIES CONSERVED IN FIELD GENE BANKS. THE INSTITUTE PROMOTES THE CONSERVATION & USE OF BREADFRUIT FOR FOOD SECURITY, AGRICULTURAL SUSTAINABILITY & ECONOMIC DEVELOPMENT. NTBG IS ALSO A COLLABORATIVE PARTNER WITH FIU IN THE DEVELOPMENT OF THE INTERNATIONAL CENTER FOR TROPICAL BOTANY IN FLORIDA. THE CENTER IS DESIGNED TO EDUCATE & BRING TOGETHER BOTANISTS FROM AROUND THE WORLD TO SHARE KNOWLEDGE.

    Expenses $3,124,036 · Revenue $2,360,595

  • Withheld by Nonprofiteer: this text may name a private individual.

    Expenses $3,102,820 · Grants $37,000 · Revenue $5,130,335

As filed on the 2024 return. A text marked withheld matched a screen for wording that may name a private individual, such as an honorific or "in memory of". Most of what it withholds names no one; it is withheld so that what does is never shown.

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.

  • Devon Angelini

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Gordon L Deane

    CHAIRMAN

    Total calculated
    $0
    Hours/week
    2
  • Jan D Elliott

    SECRETARY

    Total calculated
    $0
    Hours/week
    1
  • Harriet Fraunfelter

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Adaline H Frelinghuysen

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Peter C Gardner

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Emerson Knowles

    TRUSTEE

    Total calculated
    $0
    Hours/week
    2
  • Dr Linford L Loughheed

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Merrill L Magowan

    TRUSTEE

    Total calculated
    $0
    Hours/week
    2
  • David Rae

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • John H Rashford PhD

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Katherine G Richardson

    SENIOR VICE CHAIR

    Total calculated
    $0
    Hours/week
    2
  • Cynthia Salley

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Patricia W Sheehan

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Anita Seipp

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Catherine Topham

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Robert D Weist

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Thomas D Hewitt

    PRIOR CHAIRMAN

    Total calculated
    $0
    Hours/week
    1
  • Michael N Rosenberg DDS

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Anne G Earhart

    VICE CHAIR

    Total calculated
    $0
    Hours/week
    1
  • Elizabeth E Matthews

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Carol Dickinson

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Phyliss Evans Swindells

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Sam 'Ohu Gon III PhD

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Dr Christopher D Turner

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1

The first 25 listed. 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

  • 2024
    Revenue
    $29,167,793
    Expenses
    $14,417,543
    Contributions
    $19,675,335
    Grants paid
    $37,000
  • 2023
    Revenue
    $12,932,790
    Expenses
    $13,631,747
    Contributions
    $5,073,047
    Grants paid
    $0
  • 2022
    Revenue
    $15,141,654
    Expenses
    $12,903,414
    Contributions
    $5,405,026
    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

  • 2024 · 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
    $14,124,029
    Expenses
    $9,935,939
    Assets (EOY)
    $83,543,723
  • 2021 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported
  • 2020 · 990

    Revenue
    $8,583,887
    Expenses
    $9,767,097
    Assets (EOY)
    $75,788,998
  • 2020 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported
  • 2019 · 990

    Revenue
    $11,652,622
    Expenses
    $11,220,240
    Assets (EOY)
    $72,717,800
  • 2018 · 990

    Revenue
    $11,323,064
    Expenses
    $11,115,904
    Assets (EOY)
    $69,039,325
  • 2017 · 990

    Revenue
    $10,640,833
    Expenses
    $11,377,135
    Assets (EOY)
    $70,955,506

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

  • FLORIDA INTERNATIONAL UNIVERSITY

    $7,000

    2024 SUPPORT OF HIGHSCHOOL INTERN PROGRAM

Where these grants went next →

Grants received

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

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Declared on its 2024 return

Declared as related by

Taxable family

From Schedule R Parts I, III and IV: entities that legally are the filer, and taxable partnerships, corporations and trusts it is related to. These record ownership and control, not shared board members or money.

Related corporations and trusts on its 2024 return

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.