Agreement signedAgreed 13 Nov 2025

Caymus Purchaser, Inc. /
Cidara Therapeutics, Inc.

Merck subsidiary to acquire Cidara Therapeutics

Buy side: Caymus Purchaser, Inc.
Buy sideCaymus Purchaser, Inc.
Target: Cidara Therapeutics, Inc.
TargetCidara Therapeutics, Inc.
Merck Sharp & Dohme LLC · 13 Nov 2025Source
Buy side: Caymus Purchaser, Inc.
Buy sideCaymus Purchaser, Inc.
Target: Cidara Therapeutics, Inc.
TargetCidara Therapeutics, Inc.
01 / BuyerCaymus Purchaser, Inc.
02 / TargetCidara Therapeutics, Inc.
Source for the buyer and target: Merck Sharp & Dohme LLC

For the buyer and target.

“Agreement and Plan of Merger, dated as of November 13, 2025, among Merck Sharp & Dohme LLC, Caymus Purchaser, Inc. and Cidara Therapeutics, Inc.”

Published 5 Dec 2025

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01

What happened

Caymus Purchaser, Inc. is making an offer for all outstanding shares of Cidara Therapeutics, Inc. under a merger agreement. If the offer is successful, Cidara will become a wholly owned indirect subsidiary of Merck & Co., Inc. [01]

The filing does not state the transaction value. [01]

02

Who is involved, and the source

Everything on this page comes from the source below, quoted word for word.

Advisers

Target

Each adviser in its source's own words. An adviser's own announcement is labelled as one: it is not independent reporting. Advisers are not parties to the deal.

01
Source · Merck Sharp & Dohme LLC

Merck subsidiary to acquire Cidara Therapeutics

This document is the source for the companies, stage and people on this page.

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03

Timeline

Every date the source states, in order, each with the words it comes from. Anything marked ahead is a target the source gives, not something that has happened.

  1. Published by Merck Sharp & Dohme LLC

    The source this page is built from.

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