Nepesark
Goesan, KR Β· Public Β· 1 known investors
NEPESARK is a system semiconductor specialist company based in South Korea that designs and manufactures semiconductor products for various applications.
Also known as γλ€ν¨μ€μν¬ Β· Nepes Ark Β· Nepes Ark Corporation Β· λ€ν¨μ€μν¬
Founders & leadership
Investors Β· 1
Company profile
researched Aug 2026Nepes Ark Corporation (λ€ν¨μ€μν¬) is a South Korean semiconductor test services company headquartered at 42 Nepes-ro, Cheongan-myeon, Goesan-gun, Chungcheongbuk-do. Its core business is the provision of test solutions for system semiconductors, comprising wafer test β testing performed in the wafer state at the final stage of wafer fabrication β and package (PKG) test, performed on individual packaged chips just before shipment. The company also rents out test equipment and describes itself as an OSAT (outsourced semiconductor assembly and test) provider.
The company is part of the Nepes group and is majority-influenced by Nepes Corporation, which holds a 37.23% stake. Within the group's site network, Nepes Ark occupies the Cheongan Campus in Goesan-gun and also carries out wafer test and final test work at the group's Cheongju Campus 2 headquarters site; sister entities cover gold and solder bumping, wafer-level packaging, fan-out panel-level packaging (nepes laweh), lead tap (nepes yahad) and materials (iridos).
Nepes Ark has been listed on the KOSDAQ market since November 2020 under ticker 330860. For fiscal Q1 2026 (quarter ended 31 March 2026) it reported revenue of KRW 29.94 billion, net income of KRW 2.63 billion and EBITDA of KRW 18.30 billion, with total assets of KRW 288.43 billion and total equity of KRW 171.28 billion.
Founding story
Nepes Ark was established in April 2019 as a system semiconductor test business within the Nepes group; Chang-Woo Lee and Byung-Woo Lee were appointed chief executives on 2 April 2019.
Business model
Nepes Ark operates as an OSAT-type service provider, performing wafer-level and package-level testing for system semiconductor customers on a contract basis, and additionally rents out test equipment. It sells its services in both domestic and overseas markets and operates within the Nepes group, whose affiliates cover bumping, wafer-level and fan-out panel-level packaging, allowing test work to be combined with group packaging capability.
Revenue is generated from fees for wafer test and package test services and from the rental of test equipment.
Traction
The company employs about 345 people. For the quarter ended 31 March 2026 it reported revenue of KRW 29.94 billion (+3.30% year on year), net income of KRW 2.63 billion (+320.53%), EBITDA of KRW 18.30 billion, cash and short-term investments of KRW 61.00 billion and cash from operations of KRW 11.74 billion. Shares outstanding totalled 12.18 million with a price-to-book ratio of 1.94 and a trailing P/E of 21.43.
Latest developments
In April 2026, coverage reported a planned investment of KRW 37.5 billion in new equipment. The company reported fiscal Q1 2026 revenue of KRW 29.94 billion, up 3.30% year on year, and net income of KRW 2.63 billion, up 320.53% year on year. Its shares traded at KRW 26,300 on 30 August 2026, within a 52-week range of KRW 14,310β63,500, for a market capitalisation of about KRW 320.44 billion. Recent company notices cover an investor presentation scheduled for 8 July 2026 and local community activities in Goesan-gun, including agreements and donations involving the county welfare center for people with disabilities.
βΈFull profile β market position, technology, go-to-market, geography, history, risks & controversies
Market position
The company describes itself as a leading firm in Korea's system semiconductor test market. Market data classifies it under semiconductor testing equipment and services, alongside peers such as KLA, Advantest, Teradyne, King Yuan Electronics and Tongfu Microelectronics, with a market capitalisation of roughly USD 233 million β far smaller than the large listed test-equipment vendors in the same sector grouping.
The company positions itself as a leading domestic system semiconductor test firm, combining wafer test and package test under one operator and drawing on the Nepes group's advanced packaging capabilities, including bumping, wafer-level packaging and fan-out panel-level packaging at affiliated campuses.
Technology
The company's services span wafer test, performed on devices while still in wafer form at the end of fabrication, and package test, performed on individual packaged chips prior to shipment. It operates a dedicated test campus at Cheongan and maintains certifications and test-solution offerings described under its business and certification programmes.
Go-to-market
Nepes Ark supplies test services directly to semiconductor customers in Korea and abroad, benefitting from co-location and synergy with Nepes group packaging operations. As a listed issuer it maintains investor-relations disclosure, financial statements and scheduled IR presentations, including one announced for 8 July 2026.
Semiconductor companies requiring outsourced wafer-level and package-level test of system semiconductors, served in domestic Korean and overseas markets.
Geography
Operations are concentrated in Chungcheongbuk-do, South Korea: the company's registered address and Cheongan Campus are at 42 Nepes-ro, Cheongan-myeon, Goesan-gun, and wafer test and final test activity is also located at the Nepes group's Cheongju Campus 2 in Ochang-eup, Cheongju. Services are sold in domestic and overseas markets. Group affiliates operate additional sites in Korea, the United States, China, the Philippines and Indonesia.
History
The company was established in April 2019, with Chang-Woo Lee and Byung-Woo Lee taking office as chief executives on 2 April 2019. In November 2020 it listed on the KOSDAQ market under ticker 330860. Byeong-Gu Lee joined as a chief executive and board member in March 2021. In February 2023 the company completed a new plant at Cheongan in Goesan-gun. Board additions followed in March 2024 (Jung-Hwa Han) and March 2025 (Chan-Goo Park, Ji-Hyung Kim). In April 2026 press coverage reported a planned KRW 37.5 billion investment in new equipment.
Risks & controversies
The shares have shown wide price volatility, trading between KRW 14,310 and KRW 63,500 over the 52 weeks to 30 August 2026. Ownership is concentrated, with Nepes Corporation holding 37.23%, and the business depends on the Nepes group's packaging ecosystem and on capital-intensive test equipment investment.
Compiled by commissioned research from 7 cited public sources β 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 β not independently audited.
Timeline Β· 7
launches, deals, and filingsReported plan by Nepes Ark to invest 37.5 billion won in new equipment.
Company announcement of a business agreement with the Goesan-gun welfare center for people with disabilities to strengthen support systems.
The company completed construction of a new factory at Cheongan, Goesan-gun, Chungcheongbuk-do.
Nepes Ark listed its shares on the KOSDAQ market (ticker 330860).
Nepes Ark was founded in April 2019; Chang-Woo Lee and Byung-Woo Lee took office as chief executives on 2019-04-02.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
βΈResearch sources Β· 7
primary sources listed
- Nepesarknepesark.co.kr Β· web
7 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Nepesark do?
- KOSDAQ-listed Korean OSAT providing wafer and package test services for system semiconductors, part of the Nepes group.
- Who founded Nepesark?
- Nepesark was founded by Lee Byung-gu.
- Who are Nepesark's investors?
- Nepesark's investors include Kiwoom Investment.
- Where is Nepesark headquartered?
- Nepesark is headquartered in Goesan, KR.