# Eric Costello

> Eric Costello is a startup investor at Slack (New York). See 0 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Slack](https://shizune.co/investors/profile/slack)
- Location: New York, United States
- Last updated: Aug 2026
- X (Twitter): http://twitter.com/ericost
- Website: http://glish.com

Eric Costello is a co-founder and lead client dev at Slack. Before that, he lead client dev on the online MMOG Glitch. Before that, he lead client dev on Flickr.

## About Slack

VC Fund · San Francisco, United States

Slack is a cloud-based communication and collaboration platform for teams. It allows users to exchange messages, share files, and integrate with various business tools and services. Slack is commonly used across various industries, from tech startups to large enterprises.

5 contacts available at Slack.

| Name | Title | Profile |
| --- | --- | --- |
| Jason Spinell | Manager | https://shizune.co/investors/profile/jason-spinell |
| Matt Loop | Head of Asia Pacific | https://shizune.co/investors/profile/matt-loop |
| Steve Wood | VP of Product and Developer Platform | https://shizune.co/investors/profile/steve-wood-2-2 |
| Cal Henderson | Co-Founder and CTO | https://shizune.co/investors/profile/cal-henderson |
| Eric Costello | Co-founder | https://shizune.co/investors/profile/eric-costello |

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