Triangle Tweener Fund
VC Fund
Durham, United States
Triangle Tweener Fund is a VC fund in Durham focused on Software and Health Care. Triangle Tweener Fund seeks to create an index of early stage, private company investments.
- Total investments:
- 268
- Last investment:
- Lead investor:
- 7%
- Fund size:
- $1M
- Last fund:
Last updated:
For AI agents: llms.txt
Industries Triangle Tweener Fund invests in
Stages Triangle Tweener Fund invests in
Countries Triangle Tweener Fund invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
| See all 8 contacts → | |||
Round size
- Seed
- $625k–$6.8M
- Pre-Seed
- $25k–$2M
- Series A
- $350k–$25M
Investment Focus
Industry
- Software 63 (24%)
- Health Care 33 (12%)
- Artificial Intelligence 32 (12%)
- Information Technology 31 (12%)
- SaaS 28 (10%)
Stage
- Seed 90 (34%)
- Pre-Seed 65 (24%)
- Series A 28 (10%)
- Venture - Series Unknown 19 (7%)
- Series B 11 (4%)
Country
- United States 164 (61%)
- India 1 (0%)
- Colombia 1 (0%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
David Sonntag
Founding Funder/Investor/LP
|
Founding Funder/Investor/LP | Total investments: 0 | Find email | |
Derek Conlin
Investor & Limited Partner
|
Investor & Limited Partner | Total investments: 0 | Find email | |
Greg Vassie
Founding Funder
|
Founding Funder | Total investments: 1 | Find email | |
Jan Davis
Angel Investor
|
Angel Investor | Total investments: 1 | Find email | |
Mark Easley
Investor and LP
|
Investor and LP | Total investments: 0 | Find email | |
| See all 8 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Higharc is the all-in-one web platform that simplifies, connects, and improves each step of design, construction, and sales for home building. It enables builders to design, sell in 3D, and get permit-ready construction documents — all in a single platform. Higharc is on a mission to help builders create better homes and communities, moreaffordably. | $95M / Series C / Jun 30, 2026 | ||
| AI-Enabled Coding for Medical Billing Teams | $16M / Series A / Apr 15, 2026 | ||
| Blue Sky Robotics is a Robotics Engineering firm offering solutions through their custom automations. | Seed / Mar 27, 2026 | ||
| EPM, Equipment Performance Management, Broadcast, Film, Broadcast Studio, Broadcast Equipment, SaaS, Film Production, Media Industry, Platform, Digitalization, Fleet Managment, Business Intelligence, Business Software, Studio Software, Broadcast Software, Film Production Software, Rental House Software, Product Intelligence, Data Software, BigData, Television, Film Industry, Newsroom, News Studio, Sport Studio, Outdoor Broadcast, Technology Management, Broadcast Engineering, Film Production, and Media Industry | Pre-Seed / Mar 26, 2026 | ||
| Lucid Bots is a technology company that develops autonomous robotic systems designed for industrial cleaning and exterior maintenance tasks. It provides drones and robotic platforms used for applications such as building facade cleaning, window washing, and pressure washing in commercial environments. The company integrates software, sensors, andnavigation systems to enable controlled and repeatable operations with reduced manual intervention. Its product offerings include hardware units, operator training, and support services for deployment and ongoing use. Lucid Bots also focuses on improving safety conditions by minimizing the need for workers to perform tasks at height or in hazardous environments. | $20M / Series B / Mar 25, 2026 | ||
| Roboro is an AI driven platform that provides legislative assistance, real-time tracking, and bill analysis for government professionals. | $625K / Seed / Mar 25, 2026 | ||
| Spidr offers fintech companies a software to develop, launch, and expand embedded banking and fintech products. | Seed / Mar 17, 2026 | ||
| Arpio protects and eliminates downtime for AWS applications by making it easy to recover from any outage in just a few minutes. Founded by Doug Neumann and Shaw Terwilliger in 2018 and is based in Durham, North Carolina, United States. | Series A / Mar 11, 2026 | ||
| NeuroTech Insights brings a unique combination of relevant clinical trials with a technology platform, machine learning, and modeling that can make powerful impacts on patient outcomes. They have designed and developed a concussion management technology solution that provides value for many different stakeholder groups. | Seed / Mar 10, 2026 | ||
| Skillmaker.AI is an AI-powered XR platform that accelerates workforce training across skilled industries. | Seed / Mar 03, 2026 | ||
| See all 268 investments → | |||
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FAQ
What does Triangle Tweener Fund invest in?
Triangle Tweener Fund invests primarily in Software, Health Care and Artificial Intelligence startups, most often at Seed and Pre-Seed stage. Most of the 268 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does Triangle Tweener Fund invest in?
Triangle Tweener Fund typically joins rounds of $625k–$6.8M at Seed, $25k–$2M at Pre-Seed and $350k–$25M at Series A. These are whole funding-round sizes, not Triangle Tweener Fund's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds Triangle Tweener Fund took part in.
How do I contact Triangle Tweener Fund?
Public channels for Triangle Tweener Fund 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.
Who are the partners at Triangle Tweener Fund?
The team at Triangle Tweener Fund includes David Sonntag (Founding Funder/Investor/LP), Derek Conlin (Investor & Limited Partner) and Greg Vassie (Founding Funder), among 8 team members tracked by Shizune. The Team section lists each member with their title, investment count and links.
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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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