Sean Sebastian
Partner @ Birchmere Ventures
Pittsburgh, United States
Sean Sebastian is a Series B investor at Birchmere Ventures in Pittsburgh focused on Internet and Mobile. Sean Sebastian has 2 current jobs as Partner at Black Tech Nation Ventures and Partner at Birchmere Ventures. Additionally, Sean Sebastian has had 3 past jobs including Assistant VP at PNC Bank. Seán holds a B.S. in Mechanical Engineering from Worcester Polytechnic Institute and an MBA from Rensselaer Polytechnic Institute.
- Total investments:
- 11
- Last investment:
- Lead investor:
- 9%
Last updated:
For AI agents: llms.txt
Industries Sean Sebastian invests in
Stages Sean Sebastian invests in
Countries Sean Sebastian invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Investment Focus
Industry
- Internet 3 (27%)
- Mobile 2 (18%)
- Information Technology 2 (18%)
- Video 1 (9%)
- Banking 1 (9%)
Stage
- Series B 3 (27%)
- Series A 2 (18%)
- Seed 1 (9%)
- Series C 1 (9%)
- Series F 1 (9%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Welcome Tech
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Welcome Tech is a digital platform that builds data-driven services for immigrant workforces. The company offers access to essential services, including healthcare, jobs, education, and financial tools. With over 4.5 million registered members and a growing base of enterprise partners, it enables inclusive economic participation while helpingemployers recruit, retain, and serve an increasingly diverse workforce. | $7.5M / Aug 27, 2025 | |
Idelic
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Idelic is a driver management platform designed to consolidate fleet data systems and automate compliance processes. The platform helps prevent crashes, reduce driver turnover, and lower insurance costs by unlocking the power of data organization, artificial intelligence, and smart driver management. The company was founded in 2016 and is basedin Pittsburgh, Pennsylvania. | $20M / Series B / Mar 26, 2021 | |
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Idelic
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Idelic is a driver management platform designed to consolidate fleet data systems and automate compliance processes. The platform helps prevent crashes, reduce driver turnover, and lower insurance costs by unlocking the power of data organization, artificial intelligence, and smart driver management. The company was founded in 2016 and is basedin Pittsburgh, Pennsylvania. | $8M / Series A / Sep 18, 2019 | |
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Idelic
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Idelic is a driver management platform designed to consolidate fleet data systems and automate compliance processes. The platform helps prevent crashes, reduce driver turnover, and lower insurance costs by unlocking the power of data organization, artificial intelligence, and smart driver management. The company was founded in 2016 and is basedin Pittsburgh, Pennsylvania. | $2M / Seed / Nov 09, 2018 | |
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Idelic
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Idelic is a driver management platform designed to consolidate fleet data systems and automate compliance processes. The platform helps prevent crashes, reduce driver turnover, and lower insurance costs by unlocking the power of data organization, artificial intelligence, and smart driver management. The company was founded in 2016 and is basedin Pittsburgh, Pennsylvania. | $1M / Seed / Sep 29, 2017 | |
Nowait
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NoWait is a mobile platform that links consumers to casual dining restaurants across the United States. It streamlines the dining experience by allowing users to join waitlists and manage reservations through a convenient app. | $10M / Series B / May 20, 2014 | |
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Nowait
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NoWait is a mobile platform that links consumers to casual dining restaurants across the United States. It streamlines the dining experience by allowing users to join waitlists and manage reservations through a convenient app. | $2M / Series A / Aug 28, 2012 | |
CyOptics
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CyOptics, Inc. designs, develops, and markets Indium Phosphide (InP) optical chips and components for integration into access, metro, and long-haul communications systems. Its products include planar lightwave circuits (PLCs) for optical networks in telecommunications and defense applications. The company's products also include opticalcomponents, including transmitters, receivers, and modulators for transmission; and optical source and laser detector chips as technology enablers for transmit optical sub-assembly/receive optical sub-assembly, component, and module manufacturers. In addition, it provides contract design, foundry, and packaging services; and design and manufacturing services, such as radio frequency and optical design, wafer/chip fabrication, and automated assembly and test for telecom and non-telecom applications. The company's customers include system original equipment manufacturers and sub-system manufacturers in the communications market. CyOptics, Inc. was founded in 1999 and is based in Breinigsville, Pennsylvania. The company has InP design and fabrication operations in Lehigh Valley, Pennsylvania; silicon PLC fab operations in South Plainfield, New Jersey; and planar automated packaging and testing operations in Matamoros, Mexico. | $50M / Private Equity / Jan 26, 2011 | |
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CyOptics
|
CyOptics, Inc. designs, develops, and markets Indium Phosphide (InP) optical chips and components for integration into access, metro, and long-haul communications systems. Its products include planar lightwave circuits (PLCs) for optical networks in telecommunications and defense applications. The company's products also include opticalcomponents, including transmitters, receivers, and modulators for transmission; and optical source and laser detector chips as technology enablers for transmit optical sub-assembly/receive optical sub-assembly, component, and module manufacturers. In addition, it provides contract design, foundry, and packaging services; and design and manufacturing services, such as radio frequency and optical design, wafer/chip fabrication, and automated assembly and test for telecom and non-telecom applications. The company's customers include system original equipment manufacturers and sub-system manufacturers in the communications market. CyOptics, Inc. was founded in 1999 and is based in Breinigsville, Pennsylvania. The company has InP design and fabrication operations in Lehigh Valley, Pennsylvania; silicon PLC fab operations in South Plainfield, New Jersey; and planar automated packaging and testing operations in Matamoros, Mexico. | $27M / Series F / Oct 05, 2005 | |
Lightningcast
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Lightningcast is a broadband software company that provides seamless content and ad insertion; stream customization and localization; campaign management and reporting; targeting and auditing; audience measurement and analytics; streaming operations and support; media management; and other enabling technologies. Companies and partners utilizingLightningcast's platform include AOL, Disney/ABC, NPR, MTV and others. | $3.6M / Series C / Mar 27, 2003 | |
| See all 11 investments → | |||
Co-Investors
About Birchmere Ventures
Across five funds and two decades, we've helped build numerous successful companies such as Cvent (event management - IPO) , TenMarks (math tutoring - acquired by Amazon) CyOptics (optical chips - acquired by Avago), Neolinear (EDA - acquired by Cadence), and FreeMarkets (B2B marketplace - IPO).We believe great companies can start anywhere(but to scale quickly they may require a coastal presence), and the best engineers and scientists do not go to just a few schools on each coast. These core principles lead us to invest in companies from across the country overlooked by many other investors, uncovering hidden gems and helping them scale up.
Birchmere Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Ned Renzi
Fouding Partner
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Sean Sebastian
Partner
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Ivan Koon
Venture Partner
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Sean Ammirati
Partner
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FAQ
What does Sean Sebastian invest in?
Sean Sebastian invests primarily in Internet, Mobile and Information Technology startups, most often at Series B and Series A stage. Most of the 11 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Sean Sebastian?
Public channels for Sean Sebastian include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Sean Sebastian last invest?
The most recent investment recorded for Sean Sebastian closed in Aug 2025. Shizune tracks 11 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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