Halcyon

halcyon.eco

San Francisco, California, United States

11-50 employees

LinkedIn Profile

About Halcyon

software development, energy market analysis, data verification, energy transition research, energy market uncertainty, energy filings alerts, energy data visualization, power market data, other scientific and technical consulting services, custom filters, power market dynamics, information technology, energy industry insights, collaborative workspaces, energy market forecasting, regulatory filings analysis, data analytics, energy market intelligence, b2b, regulatory filings

Halcyon's Tech Stack

Decision Makers at Halcyon

3 contacts

Alex Klaessig

Chief Data Officer and Cofounder

k***@halcyon.io Sign up to view

Alexander Huras

Chief Technology Officer

a***@halcyon.eco Sign up to view

Nat Bullard

Co-Founder

n***@halcyon.eco Sign up to view

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11 technologies detected · 3 decision makers · Emails available

Sales Outreach Angle

HubSpot users typically run inbound-led sales motions. Products that integrate with HubSpot (email automation, CRM enrichment, ABM platforms) are natural fits.

Halcyon's Position in the StackWho Database

• Halcyon is 1 of 194,140 information technology & services companies tracked in StackWho.
• 193,618 information technology & services companies in our database have verified decision-maker emails (100% of the cohort).
• 53,147 companies in California are in the StackWho database.
• 74,148 information technology & services companies are in the 11-50 employee range (same size as Halcyon).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does Halcyon use?

Halcyon uses Gmail, Google Apps, Hubspot, Linkedin Marketing Solutions, Linkedin Widget, Mobile Friendly, and 5 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Halcyon?

StackWho has verified email addresses for 3 decision makers at Halcyon. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Halcyon directly for sales, recruiting, or partnerships.

What industry is Halcyon in?

Halcyon operates in the information technology & services industry, headquartered in San Francisco, California, United States. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Halcyon's contact data?

Yes. StackWho Pro members can export decision maker contact data for Halcyon and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.