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Form 990-PFTax year 2024EIN 26-3402690

Deltares USA Inc

A private foundation in Silver Spring, MD. Its return for tax year 2024 lists 0 grants.

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Tax year 2024 (period ending Dec 31, 2024), 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

7 returns on file
Grants paid by tax year. The latest year is in blue.

  • Tax year 2024

    $0

    Grants listed
    0
    Assets, end of year
    $3,366,374

  • Tax year 2023

    $0

    Grants listed
    0
    Assets, end of year
    $3,510,813

  • Tax year 2022

    $0

    Grants listed
    0
    Assets, end of year
    $2,638,806

  • Tax year 2021

    $0

    Grants listed
    0
    Assets, end of year
    $2,728,282

  • Tax year 2020

    $0

    Grants listed
    0
    Assets, end of year
    $2,220,262

  • Tax year 2019

    $0

    Grants listed
    0
    Assets, end of year
    $2,337,269

  • Tax year 2018

    $0

    Grants listed
    0
    Assets, end of year
    $1,910,747

Grants paid in 2024

0 grants, largest first

As listed on the return.

Officers, directors and trustees

6 people as filed

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

  • Edwin WellesDIRECTOR Hours 40Pay $211,839
  • Willem-Jan RibberinkSECRETARY Hours 5Pay $0
  • Michel Van SwietanTREASURER Hours 5Pay $0
  • Soroosh SorooshianDIRECTOR Hours 5Pay $0
  • Guy GelfDIRECTOR Hours 5Pay $0
  • Antonia SebastianDIRECTOR Hours 5Pay $0

The return

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