Clay Sumner in

Clay Sumner

Observer · DISC type ic
Chief Financial Officer at SLAC National Accelerator Laboratory
📍 Menlo Park, California, United States

Clay Sumner is the Chief Financial Officer at SLAC National Accelerator Laboratory, bringing extensive experience from both the public and private sectors. His career includes managing an $8 billion renewable energy loan portfolio for the U. S. Department of Energy and senior roles at the National Renewable Energy Laboratory. He holds an MBA from Georgetown University.

Clay is a U. S. Army veteran and a graduate of Texas A&M University, where he was a member of the Corps of Cadets. This background suggests a foundation of discipline and leadership that has complemented his extensive career in finance and strategic investment.

Unique Fact: He transitioned from analyzing enterprise IT hardware as an equity researcher to overseeing financial operations for premier national science laboratories.

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Experience
21 Years
Current Role
Chief Financial Officer
Job Level
Leadership
Location
Menlo Park, California, United States
Personality Overview

How Clay shows up

Example Seeker
Assertive
Curious

They ask a lot of questions and rely heavily on information and collaterals. They are generally strong communicators and are not easy to convince. They can sound friendly and charming but can quickly change gears to become inquisitive and probing.

Priorities

Topics Clay cares about

Renewable Energy Finance
Managed an $8 billion loan portfolio for renewable energy projects at the U. S. Department of Energy and held senior finance roles at the National Renewable Energy Laboratory.
Public Sector Finance
Has built a significant portion of his career leading the financial operations of major U. S. national laboratories, including SLAC and NREL.
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Career

Work history

3-2025
Chief Financial Officer
SLAC National Accelerator Laboratory
6-2022 - 3-2025
Deputy Chief Financial Officer
National Renewable Energy Laboratory
5-2014 - 12-2022
Director of Financial Planning and Analysis
National Renewable Energy Laboratory
3-2009 - 5-2014
Senior Portfolio Manager
U.S. Department of Energy
6-2004 - 12-2008
Senior Vice President, Equity Research
FBR Capital Markets & Co
In the press

Media appearances

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Education
1998 - 2000
MBA
Georgetown University McDonough School of Business
Bachelor of Arts (B.A.)
Texas A&M University
Social presence
in
Behavioral profile

DISC profile (public)

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Influence (I)

Influence (I) reflects the degree to which a person prefers to work by influencing or persuading others. Those scoring high tend to be people oriented, motivated by social recognition and building relationships.

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