Official Filings 2019 EPSCF 990 2018 EPSCF 9902017 EPSCF 9902016 EPSCF 9902015 EPSCF 9902014 EPSCF 9902013 EPSCF 9902012 EPSCF 9902011 EPSCF 9902010 EPSCF 990 Elsa & Peter Soderberg Charitable Foundation 501(c)(3) Letter IRS Exemption Determination Letter