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Theo Schlossnagle
AddedFeb 13, 2024
UpdatedJun 28, 2026
Theo Schlossnagle

Theo Schlossnagle

Founder, Circonus

CrunchbaseThe Org

Theo Schlossnagle's Career

Circonus
Circonus

Fulton, MD, US

Founder
SparkPost
SparkPost

Columbia, MD, US

Co-Founder

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Theo Schlossnagle's Career

Circonus
Circonus
Series B$16.8M442010Fulton, MD, US
Founder

Leadership at Circonus

Bob MoulBob MoulCEO
Joanna ArrasJoanna ArrasBoard Member
David DrahmsDavid DrahmsBoard Member
Brian KimBrian KimBoard Member

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ZenossZenossAustin, TX, USAnalytics, IT Monitoringest. 2005ZenossAustin, TX, US · est. 2005

Zenoss, Inc.: Texas-based developer of hybrid IT monitoring and analytics software since 2005.

Series A · $57.1M200
Catchpoint SystemsCatchpoint SystemsNew York City, NY, USAnalytics, Monitoringest. 2008Catchpoint SystemsNew York City, NY, US · est. 2008

Catchpoint Systems offers global, proactive web and infrastructure monitoring solutions.

Series C · $49.8M324
DatadogDatadogNew York City, NY, USCloud Monitoringest. 2010DatadogNew York City, NY, US · est. 2010

Cloud app monitoring platform with observability services for servers, databases, and tools. Mascot: Bits.

Public · $147.9M6.5k
ChronosphereChronosphereNew York City, NY, USMonitoring, Observabilityest. 2019ChronosphereNew York City, NY, US · est. 2019

Chronosphere: Redefining cloud-native monitoring with a scalable, reliable, and cost-efficient platform.

Late Stage Private · $342.5M327
SparkPost
SparkPost
Private Equity$273.5M3752008Columbia, MD, US
Co-Founder

Leadership at SparkPost

George SchlossnagleGeorge SchlossnagleCo-Founder
David ReuterDavid ReuterBoard Member
Rich HarrisRich HarrisCEO

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ResendResendSan Francisco, CA, USEmail APIest. 2023ResendSan Francisco, CA, US · est. 2023

Resend is a developer-focused email API serving 3 million users with 43 team members.

Seed · $3.5M43
DyspatchDyspatchVictoria, British Columbia, CAEmail Marketingest. 2013DyspatchVictoria, British Columbia, CA · est. 2013

Dyspatch: Streamline email creation & management for global teams.

Seed · $13.4M34
SendPulseSendPulseNew York City, NY, USEmail Marketing, Marketing AutomationSendPulseNew York City, NY, US

SendPulse: An AI-powered multi-channel marketing automation platform for enhanced email marketing.

Seed · $130k151
SendGridSendGridDenver, CO, USDelivery, Email Delivery, Email Marketingest. 2009SendGridDenver, CO, US · est. 2009

SendGrid: A Denver-based platform for transactional and marketing email delivery services.

Acquired Subsidiary · $694M

Theo Schlossnagle's Co-Investors

Gil DibnerGil DibnerCo-invested · Snyk SeedPeter McKayPeter McKayCo-invested · Snyk Series AKevin FaridahKevin FaridahCo-invested · Snyk Series EKevin FaridahKevin FaridahCo-invested · Snyk Series EPatrick PetersonPatrick PetersonCo-invested · Snyk Series APeter McKayPeter McKayCo-invested · Snyk Series A

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People Similar to Theo Schlossnagle

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