A river running through a deep pine forest valley

Grant recipient EIN 46-3355370Environment

Who funds 350 Colorado?

26 private foundations gave 350 Colorado in Boulder, CO $632,316 across 53 grants, in tax years 2017 to 2025.

Grants listed on funders’ 990-PF returns for tax years 2017 to 2025, read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

Grants received by year

Grants from private foundations by the funder’s tax year. The latest year is in blue; it is not complete until all its returns reach the IRS.

Every foundation grant, by year

53 grants

Each line as the funder listed it on its return, newest year first, then largest.

  1. Buck FoundationEvergreen, CO 2025

    General operating support

    $30,760
  2. Willliam H & Mattie Wattis Harris FoundationLas Vegas, NV 2025

    Charitable

    $10,000
  3. Maki FoundationCarbondale, CO 2025

    Operations

    $4,000
  4. Weller Investment CompanyDenver, CO 2025

    Aid to community

    $1,000
  5. Buck FoundationEvergreen, CO 2024

    General operating support

    $20,000
  6. PatagoniaorgVentura, CA 2024

    To support environmental projects.

    $15,000
  7. AEC TrustWilmington, DE 2024

    Advocating for climate justice in Boulder Colorado

    $10,000
  8. Maki FoundationCarbondale, CO 2024

    Operations

    $4,000
  9. JK Mullen FoundationGreenwood Village, CO 2024

    General

    $3,000
  10. Winslow FoundationWilmington, DE 2024

    General & Unrestricted

    $1,000
  11. The Schmidt Family FoundationPalo Alto, CA 2023

    Encouraging a just transition away from fossil fuels

    $250,000
  12. Buck FoundationEvergreen, CO 2023

    General operating support

    $35,000
  13. PatagoniaorgVentura, CA 2023

    To support environmental projects.

    $15,000
  14. The Prentice Foundation IncWilmington, DE 2023

    General & Unrestricted

    $10,000
  15. Kettering Family FoundationDayton, OH 2023

    Mobilizing a justice-based transition from fossil fuels across colorado

    $10,000
  16. AEC TrustWilmington, DE 2023

    Justice Based Climate Action and Mobilization fund

    $10,000
  17. Maki FoundationCarbondale, CO 2023

    Operations

    $4,000
  18. JK Mullen FoundationGreenwood Village, CO 2023

    General

    $3,000
  19. Innovo FoundationBoulder, CO 2023

    Environmental

    $2,500
  20. Winslow FoundationWilmington, DE 2023

    General & Unrestricted

    $1,000
  21. Pathfinder FundCarbondale, CO 2023

    General

    $1,000
  22. Steiner King FoundationCincinnati, OH 2023

    Charitable purposes

    $350
  23. Shelby Family FoundationChapel Hill, NC 2023

    Charitable

    $100
  24. AEC TrustWilmington, DE 2022

    Boulder County Climate Action & Community Engagement

    $15,000
  25. Kettering Family FoundationDayton, OH 2022

    Special program/project

    $10,000
  26. Buck FoundationEvergreen, CO 2022

    General operating support

    $10,000
  27. Innovo FoundationBoulder, CO 2022

    Environmental

    $5,000
  28. Our PartAventura, FL 2022

    Enviornmental

    $5,000
  29. Maki FoundationCarbondale, CO 2022

    Operations

    $4,000
  30. JK Mullen FoundationGreenwood Village, CO 2022

    General

    $3,000
  31. Winslow FoundationWilmington, DE 2022

    General & Unrestricted

    $1,000
  32. Kettering Family FoundationDayton, OH 2021

    Special program/project

    $10,000
  33. Maki FoundationCarbondale, CO 2021

    Operations

    $3,000
  34. JK Mullen FoundationGreenwood Village, CO 2021

    General

    $3,000
  35. Innovo FoundationBoulder, CO 2021

    Environmental

    $2,500
  36. Barron Family Foundation IncPotomac, MD 2020

    For assistance in fighting climate change.

    $20,000
  37. Harris & Frances Block Foundation IncMarshfield, VT 2020

    Movement BuildingCampaign

    $15,000
  38. The Wolcott Family FoundationPaonia, CO 2020

    Community development

    $5,000
  39. Maki FoundationCarbondale, CO 2020

    Operations

    $4,000
  40. Innovo FoundationBoulder, CO 2020

    Environmental

    $2,500
  41. JK Mullen FoundationGreenwood Village, CO 2020

    General

    $2,500
  42. Verizon FoundationBasking Ridge, NJ 2020

    Mip payout for 10/06/20

    $1,000
  43. Statler Family FoundationColorado Springs, CO 2020

    Program Support

    $500
  44. Amazonsmile FoundationSeattle, WA 2020

    General support

    $106
  45. The Horne Family FoundationBoston, MA 2019

    Supports general activities

    $15,000
  46. Harris & Frances Block Foundation IncMarshfield, VT 2019

    Movement BuildingCampaign

    $15,000
  47. AEC TrustWilmington, DE 2019

    Go Fossil Free: Divest-Invest Boulder Project

    $10,000
  48. The Lawrence FoundationSanta Monica, CA 2019

    To worklocally to help build the global grassroots movement to solve the climate crisis and transition to a sustainable future. 350 Colorado has established itself as the largest Colorado-basedgrassroots network focused on taking action to stop climate change.

    $8,000
  49. Innovo FoundationBoulder, CO 2019

    Environmental

    $1,000
  50. The Colorado TrustDenver, CO 2019

    To Support Program

    $1,000
  51. Harris & Frances Block Foundation IncMarshfield, VT 2018

    SupportMovement BuildingCampaign

    $15,000
  52. Faraway FoundationTetonia, ID 2018

    General Support

    $1,500
  53. PatagoniaorgVentura, CA 2017

    To support environmental projects.

    $3,000

Funders of similar organizations nearby

Foundations that gave to other environment organizations in Boulder, CO and are not among 350 Colorado’s funders above.

  1. Clif Family FoundationSaint Helena, CA 24 grants Accepts applications $239,700 to similar organizations
  2. Xcel Energy FoundationMinneapolis, MN 14 grants Accepts applications $123,814 to similar organizations
  3. The McKnight FoundationMinneapolis, MN 8 grants Accepts applications $1,480,000 to similar organizations
  4. JPMorgan Chase FoundationNew York, NY 7 grants Preselected only $1,169,493 to similar organizations
  5. Chrest Foundation IncIrving, TX 8 grants Preselected only $395,000 to similar organizations
  6. Gates Family FoundationDenver, CO 4 grants Accepts applications $310,000 to similar organizations
  7. GR'S FoundationWichita, KS 5 grants Preselected only $9,700 to similar organizations
  8. The Bank of America Charitable Foundation IncCharlotte, NC 12 grants Accepts applications $2,309 to similar organizations

About this match

Funders write a recipient’s name and address, not its EIN. We matched these grants to EIN 46-3355370 by name and ZIP code, or by name, city and State against the IRS list of exempt organizations and our list of filers. Grants we could not tie to one organization are not counted here.