The Northern Trust Company Address: 575 Redwood Hwy Frontage Rd, Marin County, CA 94941 Phone: (415) 381-5100 Hours: Mon: 8:30am-5pm Tue: 8:30am-5pm Wed: 8:30am-5pm Thu: 8:30am-5pm Fri: 8:30am-5pm Banks, Asset Management, Investment Management