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Gilead inks $140M API supply deal, tightening ties to Korean manufacturer

Key Takeaway: Gilead Sciences has entered a $139.8 million agreement with South Korean manufacturer Yuhan to source active pharmaceutical ingredients (APIs). This deal, effective from May 19 until the end of next year, strengthens Gilead's ongoing collaboration with Yuhan, which has previously supplied APIs for Gilead's HIV and hepatitis C drugs. The contract represents a notable portion of Yuhan's annual sales.
Price reaction · baseline $130.5 (2026-05-21 close) · hit after-hours · 3 other GILD headline(s) in the window, move may be shared
day 0 close · peak
+3%

Market Sentiment Analysis

POSITIVE FACTORS

  • Gilead expands its relationship with Yuhan, enhancing supply chain stability.
  • The deal represents a significant financial commitment, indicating confidence in Yuhan's capabilities.
  • Yuhan's capacity expansions suggest a growing partnership and future potential.

BiopharmaWatch Analysis

From our catalyst data and publicly available data · not financial advice
Best trade, last catalyst
+15%
120-day peak, hindsight
Typical move
1.4%
average across 15 past catalysts
Lead asset
Ranolazine
Phase 2 · Diabetes Mellitus, Type 2

Full Press Release Details

Gilead Sciences hasstrucka $139.8 million deal to source ingredients from Yuhan, expanding its long-standing relationship with the South Korean manufacturer.
The value of the agreement, which wasreportedbyKorea Biomedical Review, amounts to almost 10% of Yuhan’s sales for last year. The contract started May 19 and is scheduled to run until the end of next year. Yuhan’s disclosure lacks details of which active pharmaceutical ingredients (APIs) it will supply to Gilead under the terms of the deal.
Gilead has a history of sourcing antiviral APIs from Korean manufacturers. In the 2010s, ST PharmsuppliedAPIs for Gilead’s hepatitis C drugs. Later, Yuhanlandeda $45.3 million deal to supply API for Gilead’s HIV drugs in 2018. Gileadstruckanother deal with Yuhan for HIV APIs in 2024, agreeing to pay $80.9 million for the ingredients. The 2024 deal coincided with a period when U.S. companies were moving API production out of China in anticipation of the Biosecure Act.
Gilead’s latest deal with Yuhan is the second API supply agreement with a U.S. biopharma that the Korean manufacturer has disclosed this month. Earlier in May, Yuhanrevealeda $38.1 million contract to supply BridgeBio Pharma with API for a cardiomyopathy treatment. BridgeBio sells the transthyretin amyloid cardiomyopathy therapy Attruby.
Yuhan’s compatriot ST Pharm has reported two deals worth more than $50 million this year. In January, the companydiscloseda roughly one-year, $56.3 million agreement to supply APIs to the U.S. to support commercialization of an oligonucleotide treatment for severe hypertriglyceridemia. ST Pharmreportedanother oligonucleotide deal in March, this time a $59.9 million European pact.
The orders are supported by capacity expansions,Seoul Economic Dailyreported. Yuhan completed the expansion of one plant in April and plans to expand another building at the same site, with construction set to start this year and a view toward commencing operations in the first half of 2028. ST Pharm completed construction of a second oligonucleotide building last year.

Frequently Asked Questions

What is the value of Gilead's deal with Yuhan?

The deal is valued at $139.8 million.

When did the Gilead-Yuhan agreement start?

The agreement commenced on May 19.

What type of products will Yuhan supply to Gilead?

Yuhan will supply active pharmaceutical ingredients (APIs), though specifics are not disclosed.

How significant is this deal for Yuhan's sales?

The deal amounts to almost 10% of Yuhan's sales for the previous year.

Last updated: May 22, 2026