Colleen Calhoun

Active Investor

Operating Partner at Engine Ventures

Boston, Massachusetts

LinkedIn

Colleen Calhoun, Operating Partner at Engine Ventures is an active investor based in Boston, Massachusetts. This profile covers what Colleen Calhoun backs, at which stage, and how founders can reach out in 2026.

Colleen Calhoun is a recognized thought leader in the global energy sector with experience in complex project finance and marketing strategy.

Colleen Calhoun invests in Climate & Energy, typically at Early Stage Venture.

Location
Boston, Massachusetts
Typical check
$500K

What does Colleen Calhoun invest in?

Investor type
VC
Stages
Early Stage Venture

Where is Colleen Calhoun based?

Colleen Calhoun is based in Boston, Massachusetts.

Browse more startup investors near Colleen Calhoun:
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How to reach Colleen Calhoun

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About this profile

This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.

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Round Funded. "Colleen Calhoun." Round Funded investor database, updated September 22, 2026.

Stable URL, it will not change: https://www.roundfunded.com/en/investor/colleen-calhoun

Frequently Asked Questions

Who is Colleen Calhoun?

Colleen Calhoun, Operating Partner at Engine Ventures is an active investor based in Boston, Massachusetts. Colleen Calhoun invests in Climate & Energy, typically at Early Stage Venture.

What does Colleen Calhoun invest in?

Colleen Calhoun invests in Climate & Energy, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.

What stage does Colleen Calhoun invest at?

Colleen Calhoun typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.

What is Colleen Calhoun's typical check size?

Colleen Calhoun typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.

Where is Colleen Calhoun based?

Colleen Calhoun is based in Boston, Massachusetts.

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.

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