Triangle Tweener Fund
4506 S. Miami Blvd., Suite 150, Durham, NC, 27703, United States
Overview
Index of early-stage private company investments in high-tech startups.
Founded
2022
Deals · 12mo
5
Links
Stage focus
Geographic focus
Sector focus
Investment portfolio
- Higharc
Participated · Series C · Jun 2026
Higharc builds an AI-native platform that generates homes as 3D spatial data, enabling builders to automate design, estimating, sales and construction document workflows. Its AutoTranslate AI converts floorplan images into rich 3D spatial models to produce precise quantity estimates and shoppable 3D models. Customers across North America report outcomes such as compressing product development timelines from months or years to weeks or days, cutting time to community open by 25–50%, and increasing margin by 10–15%. Higharc announced expansion of its AI Estimating product to building materials distributors and a partnership with US LBM as part of that push. The company has received industry recognition, ranking in the Deloitte Technology Fast 500 and Fast Company's Most Innovative Companies of 2026. Following the Series C, Higharc has raised more than $170 million in total capital to date.
- Skillmaker
Participated · Seed · Jun 2026
Skillmaker develops XR- and AI-powered immersive training programs aimed at shortening time-to-competency for skilled-trades workers. Its NAPA Autotech Xccelerator program, developed with NAPA Auto Care, has been commercially deployed in over 20 states and carries a five-year distribution agreement with Genuine Parts Company and NAPA. The company says its program can reduce training time for entry-level auto technicians from two years to 25 days. Skillmaker has also launched pilots with partners such as Black’s Tire & Auto Service and Southeastern Community College using AI-powered smart glasses. Founded in 2024 and based in Carolina Beach, Skillmaker has won regional awards including a Coastal Entrepreneur Award and a CED Venture Connect pitch contest in AI and machine learning. Following the seed round, the company plans to expand its platform into additional trades and grow its team.
- Keebler Health
Participated · Series A · Apr 2026
Keebler Health builds an LLM-native platform that processes unstructured clinical documentation at scale to surface missed hierarchical condition category (HCC) coding opportunities and deliver actionable clinician insights at the point of care. The platform targets both retrospective and concurrent workflows to enable appropriate revenue capture without disrupting existing clinical operations. Keebler positions risk adjustment as its initial focus while planning to expand into broader population health use cases, Next Best Diagnostic Action, and compliance/audit workflows such as RADV audit readiness. The company was founded in 2023 by Isaac Park, Andrew Stickney, and Kevin Hill, PhD, with Terrell Bacchus, MD as founding CMO, and is headquartered in Durham, North Carolina. Financially, Keebler has raised $23 million to date, including the $16 million Series A announced in this round.
- Opine
Participated · Seed · Dec 2025
Opine offers a single, AI-powered platform where presales, sales, and post-sales teams collaborate on complex enterprise deals. The workspace consolidates disparate tools, data sources, and departmental workflows to surface deal risks early, automate repetitive tasks, and maintain a continuous record of customer commitments. In 2025, the company reported 10× year-over-year revenue growth, underscoring rapid market adoption. Customers cite faster answers, clearer opportunity insights, and reduced internal meetings—sometimes eliminating a 30-minute call with one query—after switching to Opine. Opine plans to invest heavily in workflow automation, real-time deal intelligence, and a unified data infrastructure. The new capital will also support an expanded go-to-market push as technical sales becomes increasingly strategic for modern B2B vendors. Founded in Raleigh, the company is trusted by leading B2B technology providers to manage sophisticated sales cycles with precision.
- Scale Social AI
Participated · Seed · Nov 2025
Scale Social AI provides an AI-native content infrastructure platform that integrates content capture, rights management, AI-powered evaluation, brand approvals, distribution, and performance measurement into a governed enterprise system. Its platform includes Scout, an AI Director that evaluates submissions against brand standards, campaign objectives, and compliance requirements to build a rights-cleared content library. The company supports consumer-focused enterprise brands across industries including hospitality, food and beverage, retail, experiential marketing, and animal health. Led by CEO Runbin Dong and CTO Paul Greenham, Scale Social AI intends to use newly raised funds to expand its enterprise platform, enhance content intelligence, grow managed programs, and bolster multi-location activation and enterprise approvals. The announcement did not disclose revenue, user metrics, or prior funding details.