# Corey Hulen (slim)

> Corey Hulen is co-founder, CTO Emeritus and CEO of Mattermost Federal of Inc.. Mattermost on Anchor Terminal, with grades, an about and public profiles.

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- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
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Co-founder, CTO Emeritus and CEO of Mattermost Federal, Inc..

Corey Hulen co-founded Mattermost and leads Mattermost Federal, Inc., its US federal subsidiary, as chief executive.

- LinkedIn: https://www.linkedin.com/in/coreyhulen/

## What Corey builds

- [Mattermost](https://www.anchorterminal.com/tools/mattermost.md), graded B, 66/100, in Work & productivity. Mattermost is an open-core team chat server from Mattermost, Inc. that its owner hosts, with channels, threads, calls and playbooks. Agents reach it through the REST API v4, bot accounts, personal access tokens, webhooks and an MCP server. Co-founder, CTO Emeritus and CEO of Mattermost Federal, Inc., researched 2026-10-28.

## Works with

- [Ian Tien](https://www.anchorterminal.com/people/ian-tien/), Co-founder and CEO
- [Jason Blais](https://www.anchorterminal.com/people/jason-blais/), VP Product and NATO Alliances
- [Pavel Zeman](https://www.anchorterminal.com/people/pavel-zeman/), SVP Engineering and Security

## Backed by

- [Y Combinator](https://www.anchorterminal.com/investors/y-combinator/)
- [Redpoint Ventures](https://www.anchorterminal.com/investors/redpoint-ventures/)
- [S28 Capital](https://www.anchorterminal.com/investors/s28-capital/)
- [Battery Ventures](https://www.anchorterminal.com/investors/battery-ventures/)

## Questions

### Who is Corey Hulen?

Corey Hulen co-founded Mattermost and leads Mattermost Federal, Inc., its US federal subsidiary, as chief executive.

### What does Mattermost, Inc. make?

Anchor Terminal lists Mattermost from Mattermost, Inc..

### Who has invested in Mattermost, Inc.?

The sources our research read name Y Combinator, Redpoint Ventures, S28 Capital and Battery Ventures.

### How are Corey's tools graded?

Mattermost is graded B, 66 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://www.ycombinator.com/companies/mattermost
- https://mattermost.com/
- https://mattermost.com/contact-us/
- https://mattermost.com/company/about-us/

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched.