William Brown is a Managing Director at First Reserve, whose known portfolio counts 9 companies.
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Investment focus
- Stage
- Late-StageSeed
- Sector
- Climate
- Focus
- Energy InfrastructureMidstreamOil & Gas
Contacts
Affiliated funds' portfolios
Managing Director at First Reserve, whose known portfolio counts 9 companies
- AFGlobal Corp
- Hoover Ferguson
- Lucero Energy
- Plains All American Pipeline
- Venterra
- Ascent Resources
- Palmdale Oil Company
- Phillips 66 Partners
- Texas American Resources Company
Investor Profile
Founders in the listed sector Climate, and focus areas Energy Infrastructure, Midstream and Oil & Gas fall inside that listing.
First Reserve appears in Late-Stage and Seed rounds across its known deals.
What the affiliated firm has backed is the closest available signal on whether William Brown is worth approaching.
Colleagues at First Reserve
Gary Reaves
Managing Partner
Houston, United States
Jeff Quake
Managing Partner
Stamford, United States
Alex Krueger
Chairman and Managing Partner
Stamford, United States
Todd Tomlin
Investor
Dallas, United States
Paul Steen
Managing Director
Houston, United States
Thomas Amburgey
Managing Director
Houston, United States
John Hill
Managing Director
Atlanta, United States
Frequently asked questions
Who is William Brown?
William Brown is a private equity investor based in Houston, Texas, United States, listed as Managing Director at First Reserve. The known portfolio of that firm counts 9 companies. That portfolio belongs to the firm, not to William Brown personally.
What does William Brown invest in?
Listed sectors include Climate; listed focus areas include Energy Infrastructure, Midstream and Oil & Gas. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does William Brown invest at?
First Reserve appears in Late-Stage and Seed rounds across its known deals, and William Brown is listed there as Managing Director. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is William Brown listed at?
William Brown is listed as Managing Director at First Reserve. 7 other people in the database share a firm with William Brown.
How do I contact William Brown?
An email address, a phone number and a LinkedIn page are on file for William Brown. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal