> ## Documentation Index > Fetch the complete documentation index at: https://apidoc.cufinder.io/llms.txt > Use this file to discover all available pages before exploring further. # Structure signals > Signals tracking the legal and organizational shape of a company, parents, subsidiaries, and entity types. Signals tracking the legal and organizational shape of a company, parents, subsidiaries, and entity types. The structure category contains **13 signals**. Each links to a full reference page with the exact trigger condition, stored fields, magnitude, and an outreach playbook. The company's entity type changed. The company changed between nonprofit and for-profit status. The company became or stopped being a subsidiary. A previously missing founded year was populated. The founded year value changed. The parent company changed to a different one. A parent company was set where there was none. A parent company relationship was cleared. A new subsidiary appeared in the company's list. A subsidiary was removed from the company's list. A new Professional Network showcase page was linked. A Professional Network showcase page was unlinked. The net count of affiliated pages shifted notably.