Foundations and corporate grantmaking programs currently supporting Montalvo include:
- Adobe Systems Incorporated
- Air Systems Foundation, Inc.
- Alliance of Artists Communities
- All Stars Helping Kids
- American Century Investments
- The Andy Warhol Foundation for the Visual Arts
- Applied Materials
- City of San Jose
- Comerica Bank Wealth and Institutional Management
- The Comerica Charitable Foundation
- The David and Lucile Packard Foundation
- Fry's Electronics
- HEDCO Foundation
- Hind Foundation
- The Intero Foundation
- The James Irvine Foundation
- J. Lohr Vineyards and Wines
- The John and Marcia Goldman Foundation
- Lockheed Martin Space Systems
- Mission City Community Fund
- Morgan Family Foundation
- National Endowment for the Arts
- Nimoy Foundation
- Pruneyard Plaza Hotel
- Rockefeller Foundation MAP Fund
- SanDisk Corporation Fund
- Santa Clara County Historical Heritage Commission
- Saratoga Rotary Charitable Foundation
- Silicon Valley Community Foundation
- Toll House Hotel
- Wells Fargo Foundation
- The William and Flora Hewlett Foundation