Board of Trustees Board of Trustees The people entrusted with stewardship, governance and oversight of the Samuel & Margaret Sitta Foundation. Founder & ChairpersonMargaret Simwanza SittaBiography to be added from the Foundation's approved leadership profile. TrusteeAgnes Sitta KijoBiography to be added from the Foundation's approved leadership profile. TrusteeCaroline Sitta MshiuBiography to be added from the Foundation's approved leadership profile.