Merck said on Friday that the European Medicines Agency's scientific advisory panel issued a favorable recommendation to broaden the approved use of its antibody treatment Enflonsia (clesrovimab), according to a Business Wire release from the company.
What happened
Merck announced, per Business Wire, that European regulators' expert advisory group has recommended widening the approved patient group for Enflonsia, an antibody shot meant to guard against respiratory syncytial virus (RSV). The company said the expanded recommendation would cover toddlers heading into their second season of RSV exposure, extending protection beyond the first year of life. Business Wire reported the announcement came from Merck's Rahway, New Jersey headquarters on the morning of November 13, 2026.
How the stock has moved
MRK traded at $147.12 in pre-market trading, up 0.12% since Thursday's close of $146.95, which is also its level since the news was first reported.
| Measure | Value |
|---|---|
| Price, pre-market trading | $147.12 |
| Since the close before the first report (Thursday, November 12, 2026) | +0.12% |
| Change from the close on Thursday, November 12, 2026 | +0.12% |
| Market value at the close on Thursday, November 12, 2026 | $362.27 billion |
Source: Stock quote; the close before the first report from our saved closes · as of November 13, 2026 at 7:00 AM ET · Shows what the stock did after the news was first reported, not why.
Its suppliers and customers
Three suppliers tied to Merck in company filings — Verona Pharma, Sidera Therapeutics and Doctor Fultz Pharma — are all unlisted and have shown no trading activity since their last recorded close.
| Company | Role | Stock | Since last close |
|---|---|---|---|
| Verona Pharma | Supplier | Not listed | — |
| Sidera Therapeutics | Supplier | Not listed | — |
| Doctor Fultz Pharma | Supplier | Not listed | — |
Source: Relationships named in company filings (Earnings call transcript); stock quotes · as of November 13, 2026 at 7:00 AM ET · A supplier or customer moving the same day is not evidence that one move caused the other.