What Does Ontotext Do?

Total employees73
HeadquartersSofia
Founded2000

Ontotext is a global leader in enterprise knowledge graph technology and semantic database engines. Renowned for its flagship product GraphDB™, Ontotext empowers organizations to connect diverse data, transform it into actionable knowledge, and leverage it for sophisticated analytics, artificial intelligence, and content intelligence applications. Serving a wide array of industries including financial services, publishing, healthcare, manufacturing, and the public sector, Ontotext helps businesses unlock the full potential of their data assets, driving innovation and operational efficiency.

Where Is Ontotext's Headquarters?

HQ Function

The Sofia headquarters serves as Ontotext's primary center for research and development, core engineering, product management, and global corporate operations.

Notable Features:

Situated within the Business Innovation Center (BIC) IZOT, a prominent technology park, the headquarters benefits from a modern infrastructure and a collaborative tech-focused environment.

Work Culture:

Ontotext cultivates a dynamic and intellectually stimulating work culture centered on innovation, collaboration, and continuous learning. Employees are encouraged to tackle complex data challenges and contribute to cutting-edge semantic technologies.

HQ Significance:

As the founding location and main R&D hub, the Sofia headquarters is pivotal to Ontotext's leadership in semantic technology, driving the development of its core products and fostering innovation.

Values Reflected in HQ: The headquarters' location in a technology park and its strong emphasis on R&D underscore Ontotext's commitment to technological excellence, innovation, and thought leadership in the semantic web and AI domains.

Location:

Ontotext serves a diverse global clientele with its cutting-edge semantic technology solutions. Beyond its headquarters in Sofia, Bulgaria, and its key office in New York, USA, the company maintains a worldwide network of partners, consultants, and professionals. This extensive global reach allows Ontotext to effectively deliver its powerful knowledge graph solutions, expert consulting, and dedicated support to enterprises across North America, Europe, Asia, and other regions, facilitating their journey towards data-driven decision-making and AI-powered innovation.

Street Address:

135 Tsarigradsko Chaussee Blvd., BIC IZOT, Office 100A

City:

Sofia

State/Province:

Sofia City

Country:

Bulgaria

Where Else Does Ontotext Operate Around the World?

New York, NY/USA

Address: Ontotext USA Inc., 1460 Broadway, New York, NY 10036, USA

This office strengthens Ontotext's presence in the crucial North American market, enabling closer engagement with clients and partners, and tapping into one of the world's largest technology and business ecosystems.

Buying Intent Signals for Ontotext

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Who's Leading Ontotext? Meet the Executive Team

As of April 2025, Ontotext' leadership includes:

Atanas Kiryakov - Chief Executive Officer (CEO)
Borislav Zhechev - Chief Technology Officer (CTO)
Vassil Momtchev - Chief Innovation Officer (CIO)
Ilian Uzunov - Chief Solutions Officer (CSO)
Milen Kisov - Chief Services Officer (CSO)
Thomas Pellizzari - Chief Sales Officer (CSO)
Doubravka Sarkansova - Chief Financial Officer (CFO)

Who's Investing in Ontotext?

Ontotext has been backed by several prominent investors over the years, including:

New Equity Venture (NEV) / Integral Venture Partners (Current Majority Shareholder)
Sirma Group Holding (Founding company and former majority shareholder)

What Leadership Changes Has Ontotext Seen Recently?

Hire0
Exits0

Based on publicly available information, no major executive hires or exits at the C-suite level have been announced by Ontotext in the last 12 months (mid-2023 to mid-2024). The leadership team appears stable.

What Technology (Tech Stack) Is Used byOntotext?

Discover the tools Ontotext uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Ontotext Email Formats and Examples

Ontotext commonly uses the 'first.last@ontotext.com' email format for its employees. While other formats might exist within the organization, this pattern is widely observed and considered the primary structure for professional communication.

first.last@ontotext.com

Format

jane.doe@ontotext.com

Example

85%

Success rate

What's the Latest News About Ontotext?

Ontotext NewsMay 7, 2024

Ontotext’s GraphDB 10.6 Redefines Semantic Data Management and AI with New SQL Connectivity and Vector Search Capabilities

Ontotext launched GraphDB 10.6, enhancing its leading semantic graph database. Key updates include new SQL connectivity for seamless BI tool integration, advanced vector search for generative AI applications, an improved GraphQL service, and enhanced data virtualization features, all aimed at simplifying data integration and accelerating AI solution development for enterprises....more

Ontotext NewsApril 4, 2024

Ontotext Ranks High in G2 Spring 2024 Reports Across Graph Databases and Semantic Search

Ontotext earned significant recognition in G2's Spring 2024 reports, being distinguished as a Leader in the Graph Databases category and a High Performer in Semantic Search. These accolades are based on verified user reviews and reflect Ontotext's strong market presence and customer satisfaction....more

Ontotext NewsNovember 9, 2023

Ontotext Partners with Sanofi to Implement FAIR Data Principles Using Knowledge Graphs

Ontotext announced a strategic partnership with global biopharmaceutical company Sanofi. The collaboration aims to leverage Ontotext's advanced knowledge graph technology to implement FAIR (Findable, Accessible, Interoperable, and Reusable) data principles within Sanofi's research and development operations, enhancing data value and accelerating scientific discovery....more

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