Alex Krueger
Chairman and Managing Partner at First Reserve
Stamford, Connecticut
Alex Krueger, Chairman and Managing Partner at First Reserve is an active investor based in Stamford, Connecticut. This profile covers what Alex Krueger backs, at which stage, and how founders can reach out in 2026.
- Investor type
- PE
- Stages
- Series BLate Stage Venture
- Invests in
- Climate & EnergyManufacturing & Industrial
- Location
- Stamford, Connecticut
- Typical check
- $5M
- Past investments
- 7
Notable investments
AFGlobal Corp.Hoover FergusonPlains All American PipelineQuanta Services
CiDRAAmromco EnergyHow to reach Alex Krueger
Angels and operators like Alex Krueger reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
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Round Funded. "Alex Krueger." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/alex-krueger
Frequently Asked Questions
What does Alex Krueger invest in?
Alex Krueger invests in Climate & Energy and Manufacturing & Industrial, typically at Series B and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Alex Krueger invest at?
Alex Krueger typically invests at Series B and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Alex Krueger's typical check size?
Alex Krueger typically writes checks around $5M. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.