Yoon & Yang LLC is noted for its expertise in the healthcare and manufacturing industries, as well as demonstrating activity in emerging fields such as ESG management and platform businesses. The team further enhanced its private equity and venture capital offerings with the hire of Young Ju Kim and Min Joo Kim in September 2025, both joined from LAB Partners, as well as So Yeon Yoon from Yulchon in August 2025. Jin Kook Lee, who joined alongside Yoon, co-leads the department with Sang-Hyun Ahn, who has broad experience across M&A, corporate governance, and compliance. Hwang Lim Jang provides corporate advisory services on M&A, corporate restructuring, and foreign direct investment, while Sangman Kim boasts a varied practice featuring M&A, the establishment of joint ventures, and corporate restructurings. Kiman Park acts for financial institutions on issues of M&A, private equity, and general corporate law.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Billing & efficiency
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
‘Yoon & Yang LLC operates under a one firm structure, with an excellent system of collaboration among experts in various practice areas.'
'Its expertise in the financial sector is among the best in the industry.'
'The firm provides high-quality services based on reasonable fees, and its advisory fees are especially competitive.’
‘Hwang Lim Jang brings exceptional expertise and proactive counsel, drawing on extensive experience.’
'I believe this team excels at quickly grasping the facts and history of a matter and promptly delivering the specialised advice that clients need.'
'Hwang Lim Jang is always readily accessible and provides prompt advice even on urgent matters. The overall teamwork of the Yoon & Yang team working with him is excellent.'
Work highlights
Advised Hyosung Chemical Corporation on the sale of its special gas manufacturing and sales division to Hyosung Neochem.
Advised Koo Mi Hyun (Major shareholder of Our Home) on a transaction of selling all of the existing shares of Our Home
Lawyers
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Sang-Hyun Ahn; Jin Kook Lee
Other key lawyers
Hwang Lim Jang; Sangman Kim; Kiman Park; Young Ju Kim; Min Joo Kim; So Yeon Yoon