Presidio Bank | 343 followers on LinkedIn. The Business Bank That Works | Presidio Bank was acquired by Heritage Bank of Commerce. Visit www.heritagebankofcommerce.bank for more information. Presidio Bank (OTCBB: PDOB), a San Francisco Bay Area business bank, provides business banking services to small and mid-size businesses, including professional service firms, real estate developers and investors, and not-for-profit organizations, and to their owners who desire personalized, responsive service with access to local decision makers.