2025-06-05T16:29:35-07:00 2024-12-31 990453672 Castellon Professional Services PC 938 E El Camino Real Sunnyvale CA 94087 990 2024-01-01 921506279 Greenwater Foundation GREE 9498422517 104 N Galveston Street Arlington VA 22203 Margaret Ruxton Executive Director 2025-06-05 true true Frank Mario CastellonCPACGMAMST P00400257 4156556626 X 2024 2025-03-06 01:10:19Z 104 N Galveston Street Arlington VA 22203 1238127 false X https://greenwaterfoundation.org/ X 2023 VA Greenwater Foundation provides leadership of marine conservation and humanitarian efforts undertaken by diverse organizations (governments, universities, NGOs, and private companies) by providing coordination of affordable vessels and science assets to achieve more efficient operations and larger collaboration all over the world. 4 4 0 10 0 1236755 0 1372 0 1238127 0 0 0 0 1993 564734 564734 673393 678593 126 678467 Greenwater Foundation provides leadership of marine conservation and humanitarian efforts undertaken by diverse organizations (governments, universities, NGOs, and private companies) by providing coordination of affordable vessels and science assets to achieve more efficient operations and larger collaboration all over the world. false false 510800 To provide leadership of marine conservation and humanitarian efforts undertaken by diverse organizations 510800 true true false false false false false false false false true false false false true false false false false false false false false false false false false false false false false false false false false false false false true false false false false false false false false true 0 0 false 0 false false false false false false false 0 false false false true false false false X 4 4 false false false false false false false true true false false true true true true true true false false false X Margaret Ruxton 7864933111 104 N Galveston St Arlington VA 22203 X Mark Miller Chairman 1.00 0.00 X 0 0 0 Margaret Ruxton Executive Dir. 1.00 0.00 X 0 0 0 Scott Thompson Director 1.00 0.00 X 0 0 0 Allen Shimada Director 1.00 0.00 X 0 0 0 0 false false false 0 1236755 696475 1236755 0 1372 1372 0 0 0 0 0 0 0 0 1238127 1372 X 0 0 0 0 0 0 0 0 0 0 0 174 174 1541 1541 0 0 0 510800 510800 1993 1993 498 498 0 0 0 0 0 0 0 0 49728 49728 0 0 564734 510800 51941 1993 6 31640 0 0 0 0 0 0 0 696475 49728 646747 0 200 0 0 0 0 678593 125 1 0 126 X 678467 0 678467 0 678593 673393 5074 X false false false X 1236756 1236756 0 0 1236756 1236756 0 1236756 1372 1372 0 0 1238128 X 0.00000 RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED 696475 49728 646747 646747 Rounding 1 1 X 1 696475 Appraisal false false false Form 990, Part VI, Section B, Line 11b No review was or will be conducted. Form 990, Part VI, Section B, Line 12c This Policy is to protect the Corporation's interests when contemplating transactions or arrangements that might benefit the private interest of an officer or Director of the Corporation or might result in a possible excess benefit transaction. This Policy supplements, but does not replace, any applicable state and federal laws governing conflict of interest applicable to nonprofit and charitable organizations. This Policy is an integral part of the Corporation's Bylaws, and shall be attached thereto as such. This Policy is intended to supplement but not replace any applicable Virginia or federal laws governing the conflicts of interest applicable to nonprofit charitable corporations. Form 990, Part VI, Section C, Line 19 No documents available to the public.