Silence Therapeutics jumps 59% on Merck takeover
Silence Therapeutics (SLN) surged 59% to $6.11 after agreeing to a $1.3B takeover by Merck KGaA. Merck will pay $20 per ADS, a 130% premium. The deal values Silence's equity at $1.3B and is expected to close in Q1 2027, pending approvals. Silence's drug development programs, including divesiran for polycythaemia vera, will benefit from Merck's resources.
How this was made

The 30-second read
Why it matters
The deal adds a siRNA platform to Merck's portfolio and provides an exit for Silence shareholders.
Market read
First disclosure of a $1.3 billion acquisition with a 130% premium, causing a 59% stock jump.
What to watch
Potential integration risks and the need for shareholder approval could delay value realization.
Background
Merck KGaA is expanding its rare‑disease pipeline through acquisitions.
Ticker impact
Silence Therapeutics shares surged 59% after announcing a $1.3 billion takeover by Merck KGaA.
upward pressure as the market prices in the cash premium
Deal is first disclosed, includes a 130% cash premium and triggers a large intraday move.
Market effects
Strengthens the rare‑disease biotech segment and may boost peer valuations.
European pharma M&A activity could see heightened attention.
Large‑cap pharma interest may spill over to global biotech sentiment.
Counterpoint
If regulatory clearance stalls, the premium could evaporate and the stock may retrace.
Key entities
- companySilence Therapeutics
Clinical‑stage biotech developing siRNA therapies.
- companyMerck KGaA
German pharmaceutical and technology group acquiring Silence.


