Modusign
Category: AI in Legal
A comprehensive AI-driven Contract Lifecycle Management (CLM) platform that digitizes and automates the entire legal process from drafting and signing to storage and risk analysis. Modusign was founded in 2015. The company is led by Young-jun Lee. Based in Seoul, South Korea. Team size: 85-100. Total funding raised: $23.7M. Latest round: Series C ($13.0M, Apr 2024). Key investors include SBVA (SoftBank Ventures Asia), Atinum Investment, Korea Investment Partners, KB Investment, IBK (Industrial Bank of Korea), DSC Investment.
- Founded
- 2015
- Headquarters
- Seoul, South Korea
- Team size
- 85-100
- Total funding
- $23.7M
Value proposition
Eliminates the friction of paper-based contracts by providing a legally secure, cloud-based environment that reduces contract processing time by up to 90% while using AI to mitigate legal risks.
Products and solutions
Modusign eSign (Core electronic signature service), Modusign Cabinet (AI-powered CLM: contract storage, OCR/metadata extraction, smart search, alerts, dashboards — live), Modusign Review (AI legal risk analysis and clause audit — launch imminent as of mid-2026; official site: 출시 임박), Modusign Form (Automated contract drafting and template management — roadmap), Enterprise API (Custom integration for internal corporate systems; 700+ API customers)
Unique value
Developed a 'Single AI Intelligence Layer' that allows all products (eSign, Cabinet, Review) to share data and context seamlessly, unlike siloed legacy competitors.
Target customer
Enterprises (Samsung, Kakao), SMEs, public institutions, and individual professionals seeking legally-binding digital document workflows.
Industries served
Legal Tech, Human Resources (HR), Finance & Insurance, Logistics & Supply Chain, Public Sector, Real Estate
Technology advantage
Combines proprietary OCR (Optical Character Recognition) with specialized Legal LLMs and a domain-specific knowledge base to extract accurate metadata and legal risks from unstructured contract text.
How they differentiate
Modusign differentiates through a web-based, no-install SaaS model optimized for Korean legal standards, offering the most seamless UI/UX for non-members. It is currently pivoting into an AI-based Contract Lifecycle Management (CLM) platform that automates the entire process from drafting to legal risk analysis, whereas competitors like Signok emphasize their background as a certified authority (KICA) and Glosign focuses on flexible pricing like pay-as-you-go models.
Main competitors
Glosign (글로싸인), Signok (싸인오케이), DocuSign
Key partnerships
Upstage (Contract-specialized AI model & Document Parse MOU, Aug 2025), Samsung Electronics (Internal system integration), Wips (Strategic IP and patent data collaboration), Kakao & Toss (Mobile authentication and notification integration), Law Firm Sunwoon (Franchise AI contract management, Mar 2026), SBVA & Atinum Investment (Strategic financial partners)
Notable customers
Samsung Electronics, Kakao, Toss (Viva Republica), McDonald's Korea, Posco, Daewoong Pharmaceutical
Major milestones
Founded in 2015 as 'Law&Factory', Launched Modusign SaaS platform in 2016, Achieved #1 market share in South Korea (~70% cloud e-sign, 2020-present), Raised 11.5B KRW Series B in Feb 2021, Raised 17.7B KRW Series C in Apr 2024 to transition into an AI CLM platform, Launched Modusign Cabinet AI CLM (Dec 2025; 10th anniversary), First KR e-sign/CLM ISO/IEC 42001 certification (Jul 2026)
Growth metrics
Over 330,000 corporate/institutional clients, 10M+ cumulative users, ~50M cumulative signatures/documents (Jul 2026); ~70% KR cloud e-sign share; ARR 8x over 5 years; IPO targeted 2028; ~94–97 employees (The VC / NPS mid-2026).
Market positioning
Dominant #1 market leader in South Korea's cloud-based electronic signature market.
Geographic focus
South Korea (primary focus), with ongoing expansion into the public sector and potential international markets via its AI-driven CLM evolution.
Patents and IP
First Korean e-signature/CLM firm to obtain ISO/IEC 42001 AI management-system certification (Jul 2026; also holds ISO 27001/27701/27017/27018). Recognized with the '2025 Korea AI SME Innovation Grand Prize' (기술보증기금) and 2025 Urban·Regional Innovation Award (행정안전부). Multiple patents related to e-signature security and blockchain document verification (via predecessor Law&Factory).
About Young-jun Lee
Young-jun Lee is the founder and CEO of Modusign, the leading electronic signature platform in South Korea. He holds a law degree from Pusan National University. Before establishing himself in the startup ecosystem, he spent several years preparing for the Korean Administrative Examination, which provided him with deep insights into legal processes. In 2015, he founded 'Law&Factory' (the predecessor of Modusign) and initially launched 'Intolaw', a lawyer search service. Recognizing the inefficiencies in traditional paper-based legal contracts, he pivoted in 2016 to develop Modusign, a cloud-based SaaS for electronic signatures. Under his leadership, the company has secured over 320,000 corporate clients and recently raised $13M (17.7B KRW) in Series C funding to expand into AI-based Contract Lifecycle Management (CLM).
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Official website: https://modusign.co.kr