Sequesto
Ghent, BE · Founded 2020 · 20 employees on LinkedIn · 3 known investors
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SEQUESTO offers an AI-based operating system (aOS) that handles responses within a team's existing workflows, with the final decision left to the user. It is presented as a tool for teams doing response work, with demos tailored by industry and use case.
Also known as SEQUESTO · SEQUESTO BV
Founders & leadership
Sequesto was founded in 2020 by Patrick Dalvinck and Evrard t'Serstevens.
Investors · 3
Company profile
researched Aug 2026SEQUESTO develops an "agentic operating system" (aOS) for commercial, bid and tender teams that handles structured response work end to end, from intake to submission. The platform covers RFPs, RFIs, DDQs, tenders and security questionnaires, with an orchestrating agent named James and specialist agents that read, draft, source, translate and route content, while bid managers retain strategy, tone and final approval.
The product is described as eight layers combined into one system: a stable frontier-model foundation (multi-model intelligence), an agentic harness runtime governing tool use, memory and reasoning, the Agent Force specialist agent layer, a context and knowledge layer with an automatically growing knowledge hub, data and integrations (off-the-shelf, MCP and custom API connectors plus usage dashboards), bid capabilities (configurable workflows and properties, Kanban, timeline and table views, expert and reviewer collaboration), workspaces and interfaces for live document work (versioning, comments, editor workflows, split views, notifications), and security and governance (full auditability, usage tracking, user access management, SSO). Knowledge remains in customers' source systems and the platform reads it in place.
SEQUESTO serves bid and tender teams in regulated industries including life sciences, financial services, critical infrastructure, consulting, healthcare and government, and states certifications to SOC 2 Type II and ISO 27001 alongside GDPR compliance.
Founding story
Patrick Dalvinck and Evrard t'Serstevens founded SEQUESTO in 2020 after observing commercial teams lose deals because responses could not be completed on time or went out with avoidable errors, a problem they attributed to knowledge scattered across documents, drives and individuals with each RFP starting from scratch. Dalvinck spent over a decade at Trend Micro as Vice President Continental Europe, with earlier roles at Symantec and AXENT Technologies, and previously co-founded ComplianceBoard with t'Serstevens and served as Executive in Residence at Trend Forward Capital. t'Serstevens held earlier technical roles at the neobank N26 and other European ventures.
Business model
SEQUESTO sells a B2B software platform to enterprise bid, proposal, security and compliance teams, with sales run through booked demos (a 30-minute walkthrough) and published plans.
Software platform offered under plans to business customers; specific pricing is not stated.
Traction
More than 50 customers worldwide and a team of more than 20 people, with operations across Europe and the United States. Disclosed customers include ISS Facility Services, ooDrive and Barona.
▸Full profile — market position, technology, go-to-market, geography, history
Market position
Positioned as an AI-first RFx response platform competing with legacy RFP response tools and with stitched-together general AI tools; the company publishes feature-by-feature comparisons against alternatives. Press coverage describes it as a Belgian scale-up in the RFP optimisation software market.
Emphasises a single auditable system spanning intake to submission rather than separate AI tools; specialist agents rather than a single generalist assistant; sourced, attributed and traceable outputs; knowledge left in customers' source systems; configurable workflows; and security certifications built into the architecture.
Technology
The platform is built on a frontier large-language-model foundation, with most work running on one primary model family and deliberate upgrades rather than switching between providers. An agentic harness runtime governs tool calling, memory, reasoning and per-request assembly; on top of it, the Agent Force provides specialist agents orchestrated by an agent called James. A knowledge layer connects to knowledge bases, document storage, CRMs and collaboration tools, reading data where it sits, and integrations include off-the-shelf connectors, MCP and custom APIs. Governance features include audit trails, usage tracking, access management and SSO.
Go-to-market
Direct sales motion built around demo requests and product, solutions, use-case, industry, comparison and integration content on the company website, supported by an articles resource library. Post-funding the company stated it would use capital to accelerate international growth.
Proposal, security, compliance, bid and tender teams at companies ranging from fast-growing SaaS firms to highly regulated enterprises, in sectors including life sciences, financial services, critical infrastructure, consulting, healthcare and government. Named customers include ISS Facility Services, ooDrive and Barona.
Geography
Headquartered in Ghent, Belgium (address given as 1 Botermarkt, Gent, East Flanders; one report cites Beveren, Belgium), with operations across Europe and the United States and team members globally.
History
Founded in 2020 in Belgium, SEQUESTO grew into an international company with operations across Europe and the United States. In September 2025 it raised €2.5 million from Smartfin and Newion to accelerate international growth. By the time of its current site, the company reported more than 20 team members and more than 50 customers worldwide.
Compiled by commissioned research from 7 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Timeline · 1
launches, deals, and filingsSEQUESTO raised €2.5 million in a round led by Smartfin and Newion, to be used to accelerate international growth and further develop its AI platform for tender and RFx management. Fundz dates the round 17 September 2025.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
▸Research sources · 7
primary sources listed
- Sequestosequesto.com · web
7 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Sequesto do?
- Belgian company behind SEQUESTO aOS, an agentic AI platform for drafting RFP, tender, DDQ and security questionnaire responses.
- Who founded Sequesto?
- Sequesto was founded by Patrick Dalvinck, Evrard t'Serstevens in 2020.
- Who are Sequesto's investors?
- Sequesto's investors include Newion, SmartFin, TORUS.
- Where is Sequesto headquartered?
- Sequesto is headquartered in Ghent, BE.