The Funders’ Committee for Civic Participation posted a 2023 Convening page (New Orleans, April 23–26, 2023). Isaiah Castilla is listed on the Convening Planning Committee as “Arabella Advisors.” The bio on that page says he “is a managing director in Arabella’s Washington, DC office,” repeats the four-year Democracy Fund general-counsel-and-secretary line, the Bolder Advocacy line, and the Musgrove / Sink / Luckett campaign line. It then says: “Isaiah serves on the boards of Sojourners and the Voter Registration Project, a national voter registration and civic engagement organization.”
The VRP chair/board line is independently on Form 990s. The Sojourners board line, this pass, is his conference bio (and watchdog pages that cite LinkedIn). No Sojourners.org board-of-directors page naming him was located this pass. This site records his statement. It does not upgrade it to a Sojourners primary. FCCP’s page is a primary for the planning-committee listing and for the words they published under his name.