Opio Raises €4 Million as Deal Auditors Automate the Files

Paris software firm Opio raised €4 million on 16 September 2026 to automate the weeks of hand work inside financial due diligence. The 10-person company, founded in 2025 by Tristan Fulchiron and Olivier Chancé, already sells to Forvis Mazars Group and BDO across 15 countries.

Frst, Seedcamp and Global Founders Capital led the first round. Angels include Arthur Waller, co-founder and chief executive of Pennylane, Stanislas Polu, co-founder of Dust, and former staff of HSBC, Deutsche Bank and KKR investing in a personal capacity.

A 10-Person Team Already Works in 15 Countries

Most seed stories at this size are a product bet. This one is a distribution bet. Transaction services teams in Germany, Canada, Senegal and Hong Kong already run the software, each on local accounting rules, and Fulchiron, the co-founder, said that kind of spread is unusual for a firm this small.

Opio says the product now frees 27% of the time transaction services staff spend on a file. Fifteen per cent of revenue already sits outside France. The company wants that share at 50% within a year, with the UK and Germany as the next sales push and Spain on a short list.

THE SEED ROUND

• The cheque: €4 million from Frst, Seedcamp and Global Founders Capital, the company’s first round.
• The payroll: A team of 10 people in Paris, with new engineers and UK and German sales hires on the plan.
• The claim: 27% of transaction services time freed by collecting, checking and structuring the file.
• The mix: 15% of revenue outside France now, with a target of 50% within a year.

Pierre Entremont, a partner at Frst, called Opio a rising European AI company. Sia Houchangnia, a partner at Seedcamp, went further on why a specialist tool even exists in this niche.

Financial due diligence is a natural fit for AI, but only if every output is accurate and auditable. Opio has built for that reality from day one, giving transaction services teams reconciled, source-linked analysis they can trust.

Sia Houchangnia, partner, Seedcamp

That accuracy bar is why general chat tools have been slow to land on live deal files. The numbers have to tie, and a partner has to sign them.

What Opio Automates in Financial Due Diligence

Financial due diligence is the review of a target’s accounts before a purchase or a sale. Audit and advisory firms staff it with transaction services teams, and the memo they produce feeds price, warranties and whether the deal closes. Banks and boards read that memo as a fact pack, not as a brainstorm.

The slow part is not the partner’s judgement. It is the junior week of pulling ledgers, reconciling packs and fixing extracts before anyone can interpret them. Fulchiron said a large share of junior time still goes on collecting, checking and adjusting data, and that Opio is built to move people onto analysis, judgement and client work sooner. He still puts the core of the job with humans who talk to management and set figures in a sector.

On its site the company sells frontier AI for transaction services as packaged models inside pre-built deal workflows, not as a blank chat box. It also states a design rule: the software should know where no single right answer exists, suggest a path, and leave the conclusion with the team.

THE CONTROLS INSIDE THE PRODUCT

• Workflow layer: Leading models are wrapped in transaction services skills and screens so a firm does not have to build that layer itself.
• Judgement gate: The tool flags steps that need a person and lets the team shape the conclusion.
• Delegation: Built-in controls pass or escalate each step so a full workflow can run without someone watching every click.
• Data handling: Client files are not used for training, and the stack can sit inside the firm’s own infrastructure.
• The certificates: SOC 2 Type II, ISO 27001, GDPR and the EU AI Act are listed as current claims.

Fulchiron has also said staff already use ChatGPT or Claude to reread mail, and that he wants the same people using AI on the detail of bank loan contracts. That is a narrower job than “AI for M&A,” and it is the job the raise is meant to industrialise.

370,000 French Firms Could Change Hands

The timing sits on a domestic wave that has little to do with Silicon Valley chat demos. Bpifrance Le Lab, in a study released on 27 November 2025 with CCI France, CMA France and the C.R.A association, put the pool of French businesses whose owners intend to hand them on at 370,000 TPE, PME and ETI by 2030, about 3 million jobs.

Forty per cent of bosses of firms with at least one staff member said they plan a transfer within five years. The survey ran from 19 May to 9 June 2025 and drew about 5,000 responses, including about 1,500 potential sellers and 2,000 buyers, plus 51 interviews.

THE TRANSMISSION POOL TO 2030

Intention is not a closed deal. In 2024 only 26,000 firms with at least one employee actually changed hands, against a potential pace of 74,000 a year. Hold the current volume and only 130,000 transfers land in five years, about a third of the stated pool. When a sale sits more than a year out, 70% of bosses have not started preparing or are still only thinking about it. Frédéric Vincent, president of C.R.A, puts a clean process at 12 to 18 months at least.

Each completed transfer still needs accounts that a buyer, a bank and an insurer can read. That is the volume argument for a tool that compresses the file, even if many planned sales slip or stall.

Mazars and BDO Put It on Live Files

Opio’s named logos are not the Big Four. They are Forvis Mazars Group and BDO, mid-tier networks whose transaction teams already compete for the same mid-market files, plus several other firms the company does not list. Fulchiron said those teams now sit in 15 countries.

Forvis Mazars is not an AI blank slate. In April 2026 it folded in Infini, a Barcelona automation practice of more than 20 people led by new partner Jaume Clotet, and said the group wanted AI on financial processes, audit, risk and compliance. Buying a specialist due diligence product on top of that build suggests the deal file is still a separate bottleneck.

BDO, for its part, has spent years on its own audit platforms and internal AI. The Opio contract is still a vote that a focused collector-and-reconciler for transaction services is worth a vendor seat. For a 10-person supplier, two networks with that footprint are the whole go-to-market.

The buyer of the software is the firm, not the company being sold. Partners gain a faster file and a cleaner workpaper. Juniors lose the weeks that used to teach them how messy a ledger is. Fulchiron’s answer to that trade is that the job should move, and that people need help seeing the move.

Data Rooms Never Touched This Layer

Ask most deal people for “AI due diligence” in 2026 and they point at virtual data rooms and legal review. Datasite, DealRoom, Intralinks and Ansarada host the room, index the pile, redact, and run Q&A. Kira, Luminance and Hebbia read contracts. That is not the auditor’s tie-out of cash, working capital and quality of earnings.

Opio sits after the room is open and before the partner writes the findings. It is closer to a junior’s workbook than to a bidder portal. That is also why a consumer feed never really took the story up. A product sold into lock-up rooms does not trend; it either shows up in a Mazars or BDO process or it does not.

Lawyers, consultants and developers already had their AI cycle, Fulchiron said, and he wants auditors on financial due diligence to have theirs. The gap he is pointing at is not “M&A has no software.” It is that the financial-file layer still runs on copy-paste.

Two Excel Tools Sit Next Door

Fulchiron names two nearby companies and then draws a line around them. In London, Tracelight builds AI for financial modelling inside Excel and raised a $3.6 million seed in 2025, led by Chalfen Ventures. He said that product is aimed at strategy shops, “working with McKinsey rather than Deloitte.”

In Amsterdam, DataSnipper sells Excel-native automation for audit and finance, reached a $1 billion valuation in 2024 after a $100 million Series B led by Index Ventures, and is adding generative features. Fulchiron said Opio “might become a competitor there at some point too.” He still argues there is no direct rival of Opio’s scale inside transaction services itself.

HOW THE THREE TOOLS DIFFER

Tracelight told its own market that early users cut 90% of time on repetitive modelling. That figure is a modeller’s claim, not an auditor’s. DataSnipper’s weight is statutory audit and finance ops inside Excel, with Big Four logos and hundreds of thousands of users. Opio’s wedge is the deal memo’s financial pack, a smaller room with a clearer buyer.

The Police-Complaint Lesson Comes to Audit

Both founders are engineers. Chancé, a graduate of École Centrale Paris, is general manager; French company records list him as directeur général and Fulchiron as president of the SAS, which was created on 9 January 2025 at 27 rue des Panoyaux in Paris. Chancé had built engineering and data teams at startups in Brazil and France. Fulchiron spent 10 years as a civil servant, leading digital projects at the Ministry of Defence and the Ministry of the Interior, including a system that let people file police complaints online.

“It saved a great deal of time for both citizens and policemen,” he said of that project. He also said the pushback he saw in public service looks like the pushback he now sees among auditors, and that the way through is to show how the job will be transferred.

“You have to help people understand how their job will be transferred, not replaced,” Fulchiron said.

That line is the product’s political problem as much as its sales pitch. Transaction services still trains people by parking them on the pack for weeks. If 27% of that time disappears, the pyramid that funds the partnership has to put juniors onto judgement earlier, or it simply needs fewer of them. The company is already working with statutory auditors on certification, which is a more regulated room than a one-off deal file, and it has a second product planned for early 2027.

THE COMPANY CLOCK

1. 9 January 2025: Opio is created as a Paris SAS, with Fulchiron as president and Chancé as general manager.
2. 2025: The pair found the company and start selling into transaction services.
3. 16 September 2026: The firm raises €4 million from Frst, Seedcamp and Global Founders Capital.
4. Within a year of the round: Management targets 50% of revenue outside France.
5. Early 2027: A second product is planned, as work with statutory auditors on certification is already under way.

The new money is earmarked for engineers and for sales seats in the UK, Germany and possibly Spain, a step Fulchiron said will prepare a later move into the United States. He also said audit AI is still early because models were weaker on figures than on prose, and that he wants Opio to sit as the link between generalist models and this workflow. Over five years, he argued, the industry’s method of working will change, and he wants a European firm, not a US one, to hold that layer.