Sean Sebastian

Partner at Uncharted Amplify / Birchmere Ventures / BTN Ventures

📍 United States🔄 Updated August 2026💼 52 investments📅 30 years investing🗓 Last invested Jan 2025
VC🌍 United States50+ investments
52
Total investments
20
Early stage
9
Mid stage
4
Late stage
30y
Years active

Portfolio

44 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
2025
Personalized virtual nutrition care from experts you can trust.
Investor
2025
At Brevity, our motto is "The game is won before it starts". Accelerate new hire ramp-up and increase quota attainment with AI-Powered Role Play. 1) Build your sales playbook, conversation frameworks, and prospect personas in minutes with AI. 2) Invite team members, assign live practice scenarios with AI prospects, and track progress. 3) Streamline training and development with AI-powered scoring and feedback. Request a DEMO today at www.brevitypitch.com
Investor
2025
Raia Health is an early-stage startup reducing the cost of chronic diseases with AI-native proactive care. We are a dedicated group of former caregivers, digital health researchers, machine learning scientists, and clinicians from premier institutions in research and industry including Harvard, Stanford, DeepMind and Massachusetts General Hospital.
Investor
2025
Olira is an AI-native platform that captures the complete patient story between visits, turning everyday data into clear, proactive guidance for clinicians. We’re backed by Precursor Ventures, Dria Ventures, Black Tech Nation Ventures, and Plug & Play, in addition to leading angel investors Jeff Dean and Jonathan Frankle. Our advisors include Mark Fleming, MD., Christopher Potts, and Toby Eduardo Redshaw.
Investor
2024
Rosarium Health is a platform that facilitates home modifications (renovations) to help households improve their health outcomes and age in place. We build then enable integrated networks of service providers nationally that serve individuals, payors, providers, and non-profits. We offer two products: a marketplace for home modifications and an ancillary benefit for payors/ACOs.
Investor
2024
We partner with apartment complexes to provide a resident home management app and dedicated personal assistant team for each building. From coming home to groceries in the fridge, laundry & dry-cleaning done, a clean home, errands run and more, residents truly experience luxury. Learn more at pleaseassistme.com.
Investor
2024
LunchTable is the first fan activation and engagement platform designed to mobilize your fans into digital brand ambassadors that boost your brand, marketing, and sales efforts. Problem: Traditional fan engagement methods struggle to keep fans actively interested beyond game day. This leads to declining attendance, decreased merchandise sales, and a disconnect between fans and teams. Value Creation: LunchTable solves this by creating a fan activation platform that uses gamification, exclusive content, and two-way interaction. This turns casual fans into passionate advocates, boosting social media engagement, brand loyalty, and valuable data insights for teams (e.g., fan preferences, sponsorship opportunities). Value-Add ● Year-Round Fan Activation and Engagements ○ Sustained Excitement ○ Stronger Brand Loyalty ○ Community Building ● Visibility for Sponsors ○ Increased Exposure ○ Creative Brand Integration ○ Authentic Association ● Attendance (Tickets and Merchandise Sales) ○ Targeted Promotions ○ Merchandising Opportunities ○ Demand Generation ● Data-Driven Insights ○ Personalized Experiences ○ Strategic Decision Making ○ Informed Marketing Campaigns
Investor
2024
We should probably talk about death.
Investor
2024
The Financial OS for Film and TV Production Finance.
Investor
2024
Empowering people to control the influence of AI on their lives
Investor
2024
RubyWell is paving a path to financial stability for all family caregivers.
Investor
2023
Through our youth program management software, AfterSchool HQ aims to connect youth with engaging after-school and summer learning programs. Our registration and management tools allow schools and providers to collect payment, take attendance, message parents, and track impact; and the platform enables parents to find, register, and pay for activities – all in one centralized location. By making activity programs more accessible, AfterSchool HQ is working towards our vision of a world where every child has the opportunity to explore their interests and discover what ignites their passions.
late stageEducation
Investor
2023
Our Vision IEP&Me foresees a world in which learning disabilities are no longer a barrier to entry, but rather a different path, to achieving a life of one’s choosing. Our Mission IEP & Me ensures every student can achieve academically regardless of their disability by providing an online platform that seeks to empower students to take control of their learning through an individualized learning and advocacy plan. IEP & Me supports students, teachers and families throughout the special education process, seeking to create transparency, clarity, and ease so that students can be lifelong learners and valuable members of society.
Investor
2023
We build modern central banking infrastructure that powers resilient and inclusive financial markets. EMTECH software as a service (SaaS) powers the Digital Currency, Compliance, Supervision, Development and Management of Banking Infrastructure. EMTECHs Beyond Suite includes: Beyond Sandbox, Beyond Cash, Beyond Compliance, Beyond Supervision, e-Wallets for Digital Currency Transactions, & Customizable APIs for development EMTECH was recently awarded the Platinum Award for CBDC Innovation by Independent Analyst Group Juniper Research.
Investor
2023
A platform built specifically for mobile businesses.
Show all 44 investments ↓
Experience · 55 entries
All (55)
Investments (52)
2026
Partner
2026
Uncharted is a community of 3,500+ founders, funders, and creators. We host multiple events per month, always with one purpose — to create new connections that fuel our members’ businesses. Event types include: Annual Uncharted Summit Our biggest event of the year, in the Hamptons Breakfasts Meet peers for tactical conversations Intimate Dinners 20 people each, in exceptional settings Executive Briefings Hear insights from high-profile leaders Cocktail Mixers The bar is open and there’s no agenda Holiday Soirees We celebrate in style Exclusive Trips Invite-only and unforgettable We don’t just leave things to chance. We hand-pick attendees for intimate events, host industry-specific gatherings so you can meet your peers, and suggest 1:1 intros with relevant people in our network. Apply to join as a member or sponsor today at joinuncharted.com.
2025
Investor
2025
Personalized virtual nutrition care from experts you can trust.
Investor
2025
At Brevity, our motto is "The game is won before it starts". Accelerate new hire ramp-up and increase quota attainment with AI-Powered Role Play. 1) Build your sales playbook, conversation frameworks, and prospect personas in minutes with AI. 2) Invite team members, assign live practice scenarios with AI prospects, and track progress. 3) Streamline training and development with AI-powered scoring and feedback. Request a DEMO today at www.brevitypitch.com
Investor
2025
Welcome Tech is the worlds first digital platform to provide the global, multigenerational immigrant community with the linguistically and culturally relevant resources to thrive in a new country. Welcome Techs unparalleled consumer insights, first-party data, and proprietary technology inform affordable, fair, and best in-market custom solutions across key services. Our initial and highly reputable immigrant platform, SABEResPODER, currently serves millions of Hispanics.
Investor
2025
Raia Health is an early-stage startup reducing the cost of chronic diseases with AI-native proactive care. We are a dedicated group of former caregivers, digital health researchers, machine learning scientists, and clinicians from premier institutions in research and industry including Harvard, Stanford, DeepMind and Massachusetts General Hospital.
Show all 55 entries ↓
Investment activity
1996–2025 · 52 investments
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