The Maine State Capitol

Form 990-PFTax year 2025EIN 01-6059906

The Aldermere Foundation

A private foundation in Portland, ME. Its return for tax year 2025 lists 19 grants and $434,448 paid in grants.

Tax year 2025 (period ending Dec 31, 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

8 returns on file
Grants paid by tax year. The latest year is in blue.
  • Tax year 2025

    $434,448

    Grants listed
    19
    Assets, end of year
    $4,842,925
  • Tax year 2024

    $387,600

    Grants listed
    17
    Assets, end of year
    $5,079,342
  • Tax year 2023

    $361,644

    Grants listed
    17
    Assets, end of year
    $5,186,405
  • Tax year 2022

    $358,455

    Grants listed
    18
    Assets, end of year
    $4,960,721
  • Tax year 2021

    $356,039

    Grants listed
    18
    Assets, end of year
    $5,001,308
  • Tax year 2020

    $349,417

    Grants listed
    17
    Assets, end of year
    $4,978,530
  • Tax year 2019

    $334,347

    Grants listed
    16
    Assets, end of year
    $5,435,358
  • Tax year 2018

    $335,833

    Grants listed
    16
    Assets, end of year
    $5,222,612

Grants paid in 2025

19 grants, largest first

As listed on the return.

  1. Maine Coast Heritage TrustTopsham, ME

    Aldermere farm operating support

    $304,448
  2. Coastal Mountains Land TrustCamden, ME

    General support

    $15,000
  3. Maine Conservation AllianceBelfast, ME

    General support

    $12,000
  4. Center for Ecological Teaching and LearningEdmunds TWP, ME

    General support

    $10,000
  5. Hurricaine Island Center for Science and LeadershipRockland, ME

    General support

    $10,000
  6. Maine Farmland TrustBelfast, ME

    General support

    $10,000
  7. Natural Resources Council of MaineAugusta, ME

    General support

    $10,000
  8. Maine Conservation Law FoundationPortland, ME

    General support

    $8,000
  9. Midcoast ConservancyWaldoboro, ME

    General support

    $8,000
  10. Palaver StringsPortland, ME

    General support

    $7,000
  11. Wayfinder SchoolsCamden, ME

    General support

    $6,000
  12. Art Van ProgramBrunswick, ME

    General support

    $5,000
  13. Chewonki FoundationWiscasset, ME

    General support

    $5,000
  14. Friends of Casco BayPortland, ME

    General support

    $5,000
  15. Georges River Land TrustRockland, ME

    General support

    $5,000
  16. Merryspring Nature CenterCamden, ME

    General support

    $5,000
  17. Penobscot Bay YMCA and Teen CenterRockport, ME

    General support

    $5,000
  18. HomeworthyRockport, ME

    General support

    $3,000
  19. Bay Chamber Concerts and Community MusicRockport, ME

    General support

    $1,000

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Environment7 grants $352,44894% of the total
  2. Food and agriculture1 grant $10,0003% of the total
  3. Arts and culture1 grant $7,0002% of the total
  4. Human services1 grant $6,0002% of the total

By State

Grants to organizations with a US address, latest year.

  1. Maine19 grants $434,448

Officers, directors and trustees

1 person as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Spinnaker TrustTRUSTEE Hours 0.67Pay $42,227

The return

More foundations

Similar foundations

Same main cause (environment), giving between a quarter and four times this foundation’s where possible, nearby first.

  1. The Old Bug Light Charitable FoundationPortland, ME 23 grants Preselected only $200,000 giving
  2. Quimby Family FoundationPortland, ME 97 grants Accepts applications $1,086,000 giving
  3. John Sage FoundationPortland, ME 27 grants Accepts applications $161,500 giving
  4. Fore River FoundationPortland, ME 91 grants Preselected only $1,649,139 giving
  5. Elliotsville Foundation IncPortland, ME 11 grants Preselected only $110,000 giving