Redwood Research — Headquarters: San Francisco, CA

NoteThe source is the official Redwood Research website and correctly identifies the organization. However, the provided excerpt contains no information about the organization's headquarters location. While the URL is redwoodresearch.org, the source text itself does not state where the organization is headquartered. To verify this claim, one would need to find additional information (such as a 'Contact Us' page, company registration documents, or other sections of the website not included in this excerpt).