Worldwide Healthcare Trust PLC – Biogen, Inc. to acquire WWH portfolio company, Apellis Pharmaceuticals, Inc.

Worldwide Healthcare Trust PLC – Biogen, Inc. to acquire WWH portfolio company, Apellis Pharmaceuticals, Inc.

PR Newswire

1 April 2026

WORLDWIDE HEALTHCARE TRUST PLC

(«WWH» or the «Company»)

Biogen, Inc. to acquire WWH portfolio company, Apellis Pharmaceuticals, Inc.

The Company notes the announcement on Tuesday, 31 March 2026 that Biogen Inc.
(«Biogen») has entered into an agreement to acquire WWH portfolio company,
Apellis Pharmaceuticals, Inc. («Apellis») for approximately $5.6 billion, or $41
per share, in cash, representing a 140% premium to Apellis’ closing price on
Monday, 30 March 2026. The offer also includes an additional $4 per share of
contingent value right payments which are based on Apellis products achieving
certain sales milestones; if met, the aggregate purchase price would represent a
163% premium to Apellis’ closing price on Monday, 30 March 2026.

Apellis is a global biopharmaceutical company focused on drugs targeting the
complement pathway for diseases of the eye, blood and kidney. Apellis launched
the first new class of complement medicines in 15 years and now has two C3
-targeted drugs, EMPAVELI and SYFOVRE, approved to treat four serious diseases.
The drugs include the first-ever therapy for geographic atrophy, a leading cause
of blindness, and a drug to treat complement 3 glomerulopathy (C3G), a severe
rare kidney disease. Net product revenues for EMPAVELI and SYFOVRE totalled $689
million in 2025 and Apellis expects revenue for these products to grow in the
mid-to-high teens at least through 2028.

The Company’s holding in Apellis represented 1.48% of the Company’s net asset
value at the time of the announcement. The transaction is reflected in the
Company’s NAV as at close of business on 31 March 2026, which was announced
earlier today.

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Enquiries:

Quill PR (Sarah Gibbons-Cook)

Public Relations

07702412680

Frostrow Capital LLP

Company Secretary

020 3 008 4913

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