Frank Karbe - 07 Jan 2026 Form 4 Insider Report for Cidara Therapeutics, Inc. (CDTX)

Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
4
Accepted by SEC
07 Jan 2026, 20:16:00 UTC
Prior SEC filing
12 Dec 2025
Next SEC filing
21 May 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Shane Ward, Attorney-in-Fact

Key filing fact

Frank Karbe filed Form 4 for Cidara Therapeutics, Inc. (CDTX) on 07 Jan 2026.

Key facts

  • This page summarizes Frank Karbe's Form 4 filing for Cidara Therapeutics, Inc. (CDTX).
  • 3 reported transactions and 1 derivative row are listed below.
  • Accepted by SEC: 07 Jan 2026, 20:16.

Change

  • Previous filing in this sequence was filed on 12 Dec 2025.
  • Current net transaction value: -$1,667,009.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001276700 Primary reporting owner

KARBE FRANK

Relationship
Chief Financial Officer
Address
6310 NANCY RIDGE DRIVE, SUITE 101, SAN DIEGO
Signature
/s/ Shane Ward, Attorney-in-Fact
Signature date
07 Jan 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CDTX transaction

Common Stock

Disposed to Issuer

Transaction value
$1,667,009
Shares
-7,526
Change %
-15%
Price
$221.50
Shares after
43,125
Date
07 Jan 2026
Ownership
Direct
Footnotes
F1, F2, F3, F4
CDTX transaction

Common Stock

Disposed to Issuer

Transaction value
Shares
-43,125
Change %
-100%
Price
Shares after
0
Date
07 Jan 2026
Ownership
Direct
Footnotes
F5

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CDTX transaction Derivative

Employee Stock Option (right to buy)

Disposed to Issuer

Transaction value
Shares
-115,000
Change %
-100%
Price
Shares after
0
Date
07 Jan 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
115,000
Exercise price
$20.50
Footnotes
F6
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

Frank Karbe is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 6 footnotes

Footnote F1

Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated November 13, 2025, by and among Cidara Therapeutics, Inc. (the "Issuer"), Merck Sharp & Dohme LLC ("Merck") and Caymus Purchaser, Inc., a wholly owned subsidiary of Merck ("Purchaser"), on January 7, 2026, Purchaser completed a tender offer to acquire (i) all outstanding shares of common stock of the Issuer, par value $0.0001 per share (each, a "Common Share") and (ii) all outstanding shares of Series A Convertible Voting Preferred Stock of the Issuer, par value $0.0001 per share (each, a "Series A Share"), and thereafter merged with and into the Issuer, with the Issuer continuing as the surviving corporation and a wholly owned subsidiary of Merck (the "Merger"). [continues to Footnote 2]

Footnote F2

[continues from Footnote 1] Pursuant to the terms of the Merger Agreement, Common Shares and Series A Shares were tendered and disposed of at the Offer Acceptance Time (as defined in the Merger Agreement) in exchange for the right to receive (i) $221.50 per Common Share (the "Common Share Merger Consideration"), in cash, without interest, subject to any applicable withholding of taxes, and (ii) $15,505.00 per Series A Share (the "Series A Merger Consideration"), in cash, without interest, subject to any applicable withholding of taxes. [continues to Footnote 3]

Footnote F3

[continues from Footnote 2] At the effective time of the Merger, each issued and outstanding Common Share and Series A Share (other than Common Shares (a) held by the Issuer (or in the Issuer's treasury), Merck, Purchaser, any other direct or indirect wholly owned subsidiary of Merck or the Issuer, or by stockholders of the Issuer who have properly exercised and perfected their statutory rights of appraisal, or (b) irrevocably accepted for purchase in the tender offer) was automatically canceled and converted into the right to receive the Common Share Merger Consideration and the Series A Merger Consideration, respectively, without interest and subject to any applicable withholding of taxes.

Footnote F4

Includes 89 shares acquired pursuant to the Issuer's Employee Stock Purchase Plan (ESPP) on December 18, 2025.

Footnote F5

As of immediately prior to and contingent upon the occurrence of the effective time of the Merger, pursuant to the Merger Agreement, each outstanding restricted stock unit award ("RSU"), whether vested or unvested, was cancelled and converted into the right to receive cash, without interest, subject to any applicable withholding of taxes, in an amount equal to (i) the total number of Common Shares issuable in settlement of such RSU immediately prior to the effective time of the Merger multiplied by (ii) $221.50 per Common Share.

Footnote F6

As of immediately prior to and contingent upon the occurrence of the effective time of the Merger, pursuant to the Merger Agreement, each outstanding option became fully vested and exercisable, and to the extent outstanding and unexercised as of immediately before the effective time of the Merger, was cancelled at the effective time of the Merger and converted into the right to receive cash, without interest, subject to any applicable withholding of taxes, in an amount equal to the product of (i) the total number of Common Shares subject to such option immediately prior to the effective time of the Merger multiplied by (ii) the excess of (x) $221.50 per Common Share over (y) the exercise price payable per Common Share under such option.

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