---
title: Companies Seen
description: Discover how the Companies Seen list tracks all revealed companies permanently, how it differs from the 90-day reveal filter, and why counts vary.
url: https://theirstack.com/en/docs/app/company-lists/companies-seen
---

## What is "Companies Seen"?

"Companies Seen" is an automatic, system-managed [company list](/en/docs/app/company-lists) that stores every company your team has ever revealed. It is available in [Company Lists](https://app.theirstack.com/company-list).

Key characteristics:

-   **Automatic**: Companies are added the moment you reveal them — no manual action needed
-   **Permanent**: Companies are never removed from this list, even after the 90-day reveal window expires
-   **Protected**: You cannot rename or delete this list

## Companies Seen vs "Is Company Revealed" filter

These two concepts are related but work differently:

|  | Companies Seen list | "Is Company Revealed" filter |
| --- | --- | --- |
| **What it is** | A permanent list of every company you've ever revealed | A search filter that checks if a company was revealed in the last 90 days |
| **Expiration** | Never — companies stay in this list forever | 90 days — after that, the company is no longer considered "revealed" |
| **Use case** | Track your reveal history, export previously revealed companies, exclude them from new searches | Filter search results to only show companies you can view without spending additional credits |

## Why do the counts differ?

Since [company reveals expire after 90 days](/en/docs/pricing/credits), your "Companies Seen" list may show more companies than the "Is Company Revealed" filter returns. The difference represents companies revealed more than 90 days ago — they remain in the list permanently but are no longer considered "revealed" in search.

To avoid re-revealing companies you've already paid for, see [How do I exclude previously revealed companies?](/en/docs/app/company-search#how-do-i-exclude-previously-revealed-companies)