Startup funding activity remained strong in the third week of September 2026, with investors directing substantial capital toward AI infrastructure, robotics, space technology, fintech, and high-performance computing.
Five notable companies Temporal Technologies, D-Robotics, Impulse Space, Ridgeline, and Cornelis- collectively announced more than $1.7 billion in new funding.
Based on data curated from the Intellizence Startup Funding Dataset, here are the five top startup funding deals announced during the week ending September 21st, 2026.
Funding Deals for the Week – Highlights
| Company | Funding Amount | Funding Round | Industry |
|---|---|---|---|
| Temporal Technologies | $550 million | Series E | Technology |
| D-Robotics | $400 million | Series C | Technology |
| Impulse Space | $308 million | Series D | Space Technology |
| Ridgeline | $250 million | Series E | Technology |
| Cornelis Network | $205 | Series C | Technology |
Funding Deals of the Week
Temporal Technologies Raises $550 Million in a Series E Round
Funding Amount: $550 Million
Funding Round: Series E
Valuation: $12.55 Billion
Industry: Technology
Temporal Technologies raised $550 million in Series E funding, valuing the open-source application infrastructure company at $12.55 billion. Temporal provides an open-source platform for building and operating applications that need to continue functioning reliably despite infrastructure and software failures. Its Durable Execution technology has become increasingly relevant as companies deploy complex, long-running AI agents and workflows.
Lightspeed Venture Partners led the round. Wellington Management, Growth Equity at Goldman Sachs Alternatives, and Tiger Global served as co-leads. T. Rowe Price and SV Angel also participated.
Existing investors participating in the round included Andreessen Horowitz (a16z), Sequoia Capital, Index Ventures, GIC, Sapphire Ventures, and Amplify Partners.
How will Temporal Use The Funding
Temporal plans to use the Series E capital to:
- Deepen platform research and development
- Expand its developer ecosystem
- Grow its enterprise go-to-market operations
- Expand globally
- Scale the teams and infrastructure supporting Temporal Cloud
2. D-Robotics Raises $400 Million in Series C Funding
Funding: $400 Million
Funding Round: Series C
Valuation: ND
Industry: Technology
Robotics infrastructure company D-Robotics raised $400 million in Series C funding, expanding the hardware and software infrastructure supporting AI-powered robots. D-Robotics develops computing infrastructure for robotics, including its Sunrise chip family and supporting software.
The financing was led by Mirae Asset Capital, with participation reported from strategic and institutional investors including Meituan Strategic Investment, Hefei State-owned Capital, Nanshan SEI Investment, Jingquan Capital, Cathay Capital, Huamei International Investment Group, GF Xinde Investment, Chaoyue Moore and Xinchuang Phase II Fund.
Existing shareholders also participated, including investors such as 5Y Capital, Linear Capital, Vertex Growth, Prosperity7, Hermitage Capital, and YF Capital, among others.
How will D-Robotics use the funding?
The Series C capital will primarily be used to:
- Expand the Sunrise chip portfolio across different computing levels
- Develop its robotics software platform
- Support the complete robot-development workflow
- Strengthen integrated hardware-software infrastructure for AI robots
3. Impulse Space Raises $308 Million Series D Extension
Funding: $308 Million
Funding Round: Series D
Valuation: $5.4 Billion
Industry: Technology
Space technology startup Impulse Space raised $308 million in an extension of its Series D financing, bringing the entire Series D round to $808 million. The company previously announced $500 million in Series D funding in June 2026 at a valuation of approximately $4.26 billion. The Series D extension valued Impulse Space at approximately $5.4 billion. Founded by former SpaceX propulsion executive Tom Mueller, Impulse Space develops spacecraft designed to transport satellites and other payloads after launch.
Existing investors participating in the extension included: 137 Ventures, BANNER VC, DFJ Growth, Linse Capital, Lux Capital and Valor Equity Partners, among others.
How will Impulse Space use the funding?
The additional Series D financing will support:
- Continued spacecraft product development
- Expansion of the company’s engineering and operations teams
- Scaling capabilities for commercial customers
- Civil space missions
- Government and defense-related demand
4. Ridgeline Raises $250 Million Series E at $1.425 Billion Valuation
Funding: $250 Million
Funding Round: Series E
Valuation: $1.42 Billion
Industry: Investment Management Technology
Ridgeline raised $250 million in Series E funding, at a valuation of $1.425 billion. The investment management technology company provides an AI-native investment management platform designed to replace multiple legacy systems used by asset and wealth managers.
The invitation-only round was led by Ridgeline founder and chairman Dave Duffield, who previously founded PeopleSoft and Workday. Participants included Ridgeline customers and affiliates, including Motley Fool Ventures, associates of Smead Capital Management, and Patrick O’Shaughnessy, CEO of Positive Sum.
How will Ridgeline use the funding?
Ridgeline plans to deploy the new capital primarily toward:
- Extending its AI capabilities
- Expanding its managed-services offering
- Growing its customer base in Canada
- Expanding into Europe
- Accelerating product innovation
5. Cornelis Raises $205 Million for AI Networking Infrastructure
Funding Amount: $205 Million
Funding Round: Series C
Valuation: ND
Industry: Defense and Space Manufacturing
Cornelis Networks raised $205 million in funding, led by IAG Capital Partners, as the company expands its high-performance networking technology for AI and HPC infrastructure. The company develops networking systems designed to allow processors and AI accelerators to communicate efficiently across large computing clusters.
Cornelis is developing technology that incorporates programmable computing capabilities into the network fabric itself. The approach is designed to reduce communication bottlenecks that can leave expensive GPUs and other accelerators waiting for data.
How will Cornelis use the funding?
The financing will help Cornelis:
- Expand into scale-up networking
- Develop its next generation of scale-up and scale-out products
- Scale production
- Support CN6000 manufacturing and customer deployments
- Deepen customer relationships
- Accelerate go-to-market activities
What These Funding Rounds Tell Us
The latest funding activity reveals several important trends.
- AI infrastructure remains a major theme
- Robotics infrastructure is also attracting significant investment.
- Space infrastructure continues to draw growth-stage funding.
- Increased investment in the application of AI to specialized enterprise software.
Why Use the Intellizence Startup Funding Dataset for AI Funding Tracking?
The Intellizence Startup Funding dataset can provide early signals about emerging technologies, rapidly growing companies, and sectors attracting significant investor interest. The funding signals track announcements across startups and private companies, including funding amount, funding round, valuation, investors, lead investors, company industry, location, and other relevant data points.
A large funding round can indicate that a company may soon:
→ Increase hiring
→ Expand into new markets
→ Invest in technology and infrastructure
→ Launch new products
→ Increase sales and marketing activity
→ Make acquisitions
→ Build new partnerships
→ Expand internationally
Intellizence combines AI-supported curation with human review to convert public funding announcements into structured and searchable records. The information can be accessed through the Intellizence platform or integrated into applications, AI agents, and internal workflows through the REST API. Explore the latest startup funding rounds and identify companies gaining investor momentum with Intellizence Startup Funding Signals.
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