Deal Flow
Letter · prints on one page
Transaction tear sheetData as of Nov 7, 2026
M&A · Healthcare · Biological Products, (No Diagnostic Substances)

Merck & Co., Inc. to acquire Cidara Therapeutics, Inc.

Announced Nov 14, 2025 · Closed Jan 7, 2026

Deal value$9.20BEV $6.67B
Premium109.0%To unaffected price
EV / Adj. EBITDA—
ConsiderationAll cash$221.50 per share

Transaction

Acquirer
Merck & Co., Inc. (MRK)
Target
Cidara Therapeutics, Inc. (CDTX)
Buyer type
Strategic
Offer price per share
$221.50
Enterprise value
$6.67B
Status
Closed Jan 7, 2026

Deal protections

Break fee (target pays)
$301M · 3.3%
Reverse fee (buyer pays)
$462M · 5.0%
Go-shop
No-shop
Financing
—

Advisors

To the acquirer
BofA Securities
To the target
Evercore, Goldman Sachs

Sector context · Healthcare

Comparable deals
99 in the prior 24 months
Premium
109.0% vs. 59.5% sector median
EV / Adj. EBITDA
Sector median 14.5x
Break fee
3.3% vs. 3.4% sector median

Timeline

  1. AnnouncedNov 14, 2025
  2. Tender offerDec 5, 2025
  3. ClosedJan 7, 2026

Valuation · fairness opinions

Analyst price targets$100.85$120.67
52-week trading range$153.69$183.36
52-week trading range$144.03$177.71
Offer $221.50

Implied value per Cidara Therapeutics, Inc. share by analysis, from Goldman Sachs · DCF discount rate 13%–15%.

Sources
  • SC TO-C (EX-99.1) · Nov 14, 2025
  • 8-K · Nov 14, 2025

Adj. EBITDA is operating income + D&A + impairment, restructuring, deal costs and stock compensation, less any large gain on a sale, last twelve months, from the target's filings. Calculated by Castle, so it can differ from a bank's adjusted figure.

Prepared with Castle from public SEC EDGAR filings. Figures are extracted automatically; verify against the source documents. Not investment advice.