This page aggregates MRK's FDA catalysts from pdufa.bio's own calendar and decision archive. Each item links to its source page. Facts and dates only; verify against primary FDA / SEC / company filings.
Computed from this stock's own daily closing prices, on the same T-120 basis as the run-up study: the baseline is the close 120 trading sessions before the eve of the decision. These are measurements of what already happened, not predictions.
| Decision | Outcome | T-120 to eve | T-120 to peak |
|---|---|---|---|
| 2026-09-24 | APPROVAL | +22.5% | +29.5% |
| 2026-09-22 | APPROVAL | +26.6% | +32.5% |
| 2026-07-16 | APPROVAL | +11.3% | +16.6% |
| 2026-07-10 | APPROVAL | +12.7% | +16.7% |
| 2026-06-24 | APPROVAL | +12.2% | +16.2% |
| 2026-06-18 | APPROVAL | +9.9% | +18.0% |
| 2026-06-12 | APPROVAL | +21.8% | +25.0% |
| 2026-04-21 | APPROVAL | +33.8% | +41.7% |
| 2026-02-20 | APPROVAL | +45.0% | +45.0% |
| 2026-02-11 | APPROVAL | +37.9% | +43.6% |
| 2025-12-17 | CRL | +24.7% | +34.0% |
| 2025-11-21 | APPROVAL | +24.6% | +26.5% |
December 2026. The next catalyst for Merck & Co., Inc. is Pembrolizumab (readout). That date is known to the month only. 2 further catalysts are scheduled after it. Dates are taken from FDA notices, company filings or ClinicalTrials.gov, and we do not publish a specific day when the source only gives a month or a quarter.
Yes, 17 in our archive: 16 approval(s) and 1 Complete Response Letter(s). The most recent was on September 24, 2026 and was an approval. Each one has its own page with the source document and the share-price reaction we measured.
Measured from this company's own daily closing prices: Median across these 79 decisions: +1.5% from T-120 to the eve, +8.8% to the peak. These are historical measurements of what already happened, not forecasts, and we publish no price targets or probability of approval.
FDA publications, company filings with the SEC, company press releases and ClinicalTrials.gov, with share prices measured from daily closing data. Every date and outcome links the document it came from. Where an outcome was inferred from the price reaction rather than read from a filing, the page says so on its face.