As summer comes to an end, September 2025 has been a busy period for funding announcements.
This month, billions of dollars have been raised by companies looking to tackle the next big thing in robotics, AI, biotechnology and more.
But the interesting thing about September’s roundup isn’t the diversity of ideas, it’s also the diversity of investments.
Whilst some companies are raising billions, others are raising less than £1.5 million. This shows huge investor appetite for companies of all sizes.
But this month’s roundup is also a reminder that AI isn’t the only thing turning heads. Companies are also investing in important areas like healthcare and the environment, including areas like de-extinction.
So, let’s take a look at the companies that investors have backed this month.
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Irregular raises $80M
Previously known as Pattern Labs, Irregular has raised $80 million at a $450 million valuation.
The company has developed a platform that runs simulations on common AI models, testing how they could be weaponised in cyberattacks. Through this, they are able to identify areas of risk and create tools to counter these threats.
Who led the round? Sequoia Capital and Redpoint Ventures.
Find them at: irregular.com
Colossal Biosciences raises $120M
Colossal Biosciences, a de-extinction company based in Texas, has raised $120M to add to its $200M Series C raise, valuing it at $10.32 billion.
The company is currently setting out to bring back the dodo bird, an animal that was previously announced as extinct. In April, the company announced the birth of 3 dire wolves, calling it the world’s first de-extinction.
Colossal have set their eyes on other animals to bring back, calling it “a new frontier in reproductive science”.
Who contributed to the round? USIT, Bob Nelsen, and Peter Jackson
Find them at: colossal.com
MicroFactory raises $1.5M
In a pre-seed funding round, MicroFactory has raised $1.5 million to develop an AI-powered tabletop robot that is able to solder, screw, package and peel.
Over the next few years, MicroFactory wants to deploy 100 million robots to help reduce manual labour and improve profitability across a variety of industries.
Who invested in the round? Clement Delangue and Naval Ravikant.
Find them at: simpleautomation.us
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Figure AI raises over $1B
Figure, an AI robotics company that is developing humanoid robots, raised over $1 billion in committed capital this month as part of its Series C funding round. This puts the startups valuation at a huge $39 billion.
The funding round is designed to help them test their humanoid robots in more real-world environments.
Who led the round? Parkway Venture Capital with significant investment from Brookfield Asset Management, NVIDIA, Macquarie Capital, Intel Capital, Align Ventures, Tamarack Global, LG Technology Ventures, Salesforce, T-Mobile Ventures, and Qualcomm Ventures.
Find them at: figure.ai
Factor2 Energy raises $9.1M
Factor2 Energy, a German company looking to improve access to geothermal energy, completed its seed funding round raising $9.1 million.
The company will use the funds to develop new methods to harness geothermal energy and improve energy security across Europe.
Who led the round? One Ventures with investments from High-Tech Gründerfonds (HTGF), Gründerfonds Ruhr, Verve Ventures and Siemens Energy Ventures.
Find them at: factor2-energy.com
BIOWEG raises €16M
German biotech company Bioweg has secured a €16M ($18.8m) Series A round to develop ingredients designed to replace microplastics in cosmetics and other products.
The round will allow them to open their first industrial manufacturing plant, allowing them to scale within Europe.
Who led the round? Axeleo Capital’s Green Tech Industry Fund, with participation from the EIC Fund, NBank Capital, BonVenture, and early backer Dr.-Ing. Frank Jenner.
Find them at: bioweg.com
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Fyxer AI raises $30M
Frxer AI, whose main product is an AI personal assistant announced a $30 million Series B round.
After quick growth to 180,000+ users in just 7 months, the startup is looking to lock in new partnerships and continue expanding across the UK and US.
Who led the round? Madrona with participation from Lakestar Capital.
Find them at: fyxer.com
CuspAI raises $100M
Described as a ‘search engine for molecukes’, CuspAI is a materials startup that has just raised $100m in VC funding.
The platform uses AI to allow scientists to input material properties and see a full list of suggestions, making the process faster, easier and more efficient.
Who led the round? New Enterprise Associates and Singapore sovereign wealth fund Temasek. Nvidia’s venture capital arm NVentures, Samsung Ventures, and Hyundai Motor Group.
Find them at: cusp.ai
BoobyBiome raises £2.5M
Biotechnology company BoobyBiome has raised £2.5 million in seed funding for research into new baby feeding solutions.
The startup aims to combat the rising issue of health problems in babies by using the power of the breast milk microbiome. Whilst they are still in their research stage, the company has the potential to completely disrupt the baby milk market.
Who led the round? Empirical Ventures, alongside The Helm, XFactor Ventures, Lavender Ventures, Kayan Ventures and Evenlode Investment.
Find them at: boobybiome.com
Messium raises £3.3m
Messium, a UK agri-tech company that is setting out to improve nitrogen efficiency in farming has raised a £3.3m seed round.
Their platform uses a mix of satellite images and AI to give farmers practical and useful tips for improving yield.
The funding is part of an expansion push, which will see them launching across the UK, Europe and Australia.
Who led the round? KI2S and Expansion Aerospace Ventures
Find them at: Messium.co.uk
Sources: Startups.co.uk, Tech Funding News, TechCrunch
