# William Rusnack

> William Rusnack is a startup investor at Project Sunscreen (St Louis). See 0 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Project Sunscreen](https://shizune.co/investors/profile/project-sunscreen)
- Location: St Louis, United States
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/bill-rusnack-96160b16

William Rusnack is a startup investor at Project Sunscreen in St Louis. William Rusnack has been a director since 2001.He was the president and chief executive officer and a director of Premcor Inc. from 1998 to 2002. Prior to 1998, he was an executive of Atlantic Richfield Co. He is also a director of Flowserve and Peabody Energy.He is a member of the Dean's Advisory Council of the Graduate School ofBusiness at the University of Chicago and the National Council of the Olin School of Business at the Washington University in St. Louis.

## About Project Sunscreen

VC Fund



1 contacts available at Project Sunscreen.

| Name | Title | Profile |
| --- | --- | --- |
| William Rusnack | Director | https://shizune.co/investors/profile/william-rusnack |

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