Document

424B3 1 a424b32018-07x05.htm PROSPECTUS [RULE 424(B)(3)] Document

Filed Pursuant to Rule 424(b)(3)

Registration File No. 333-225787

PROSPECTUS

12,499,997 shares of Common Stock

This prospectus covers the offer and resale by the selling stockholders identified in this prospectus of up to an aggregate of 12,499,997 shares of our common stock issuable upon the exercise of warrants sold to the selling stockholders in a private placement on May 25, 2018.

We are not selling any shares of common stock under this prospectus and will not receive any proceeds from the sale by the selling stockholders of such shares. We are paying the cost of registering the shares of common stock covered by this prospectus as well as various related expenses. The selling stockholders are responsible for all selling commissions, transfer taxes and other costs related to the offer and sale of their shares.

Sales of the shares by the selling stockholders may occur at fixed prices, at market prices prevailing at the time of sale, at prices related to prevailing market prices or at negotiated prices. The selling stockholders may sell shares to or through underwriters, broker-dealers or agents, who may receive compensation in the form of discounts, concessions or commissions from the selling stockholders, the purchasers of the shares, or both. If required, the number of shares to be sold, the public offering price of those shares, the names of any underwriters, broker-dealers or agents and any applicable commission or discount will be included in a supplement to this prospectus, called a prospectus supplement.

Our common stock is listed on The Nasdaq Global Market under the symbol “CDTX.” On July 3, 2018, the last reported sale price of our common stock was $5.25 per share.

Investing in our common stock involves a high degree of risk. Before making an investment decision, please read the information under “Risk Factors” beginning on page 3 of this prospectus and under similar headings in our Annual Report on Form 10-K for the fiscal year ended December 31, 2017 and our Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2018, which have been filed with the Securities and Exchange Commission, or the SEC, and are incorporated by reference in this prospectus and in the other documents that are filed after the date hereof and incorporated by reference into this prospectus.

Neither the SEC nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is July 5 , 2018

TABLE OF CONTENTS




ABOUT THIS PROSPECTUS	i

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS	i

PROSPECTUS SUMMARY	1

RISK FACTORS	3

USE OF PROCEEDS	3

SELLING STOCKHOLDERS	4

PLAN OF DISTRIBUTION	7

EXPERTS	8

LEGAL MATTERS	9

WHERE YOU CAN FIND MORE INFORMATION	9

INCORPORATION OF CERTAIN INFORMATION BY REFERENCE	9

ABOUT THIS PROSPECTUS

You should read this prospectus, any applicable prospectus supplement and the documents incorporated by reference in this prospectus before making an investment decision. You should also read and consider the information in the documents to which we have referred you in the sections of this prospectus entitled “Where You Can Find More Information” and “Incorporation of Certain Information by Reference.”

You should rely only on the information contained in or incorporated by reference in this prospectus (as supplemented or amended). We have not authorized anyone to provide you with different information. This prospectus may be used only in jurisdictions where offers and sales of these securities are permitted. The information contained in this prospectus, as well as the information filed previously with the SEC, and incorporated by reference in this prospectus, is accurate only as of the date of the document containing the information, regardless of the time of delivery of this prospectus or any applicable prospectus supplement or any sale of our common stock.

Unless otherwise stated, all references in this prospectus to “we,” “us,” “our,” “Cidara,” the “Company” and similar designations refer to Cidara Therapeutics, Inc. and its subsidiaries on a consolidated basis. We have filed the word trademark “Cidara” for registration on the Principal Register of the United States Patent and Trademark Office. Solely for convenience, trademarks and trade names referred to in this prospectus supplement, the accompanying prospectus and the information incorporated by reference herein and therein, including logos, artwork and other visual displays, may appear without the ® or TM symbols, but such references are not intended to indicate, in any way, that we will not assert, to the fullest extent under applicable law, our rights or the rights of the applicable licensor to these trademarks and trade names. This prospectus, any applicable prospectus supplement and the documents incorporated by reference in this prospectus may contain trademarks and trade names of other companies, and those trademarks and trade names are the property of their respective owners. We do not intend our use or display of other companies’ trademarks or trade names to imply a relationship with, or endorsement or sponsorship of us by, any other companies or products.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus and any applicable prospectus supplement or free writing prospectus, including the documents that we incorporate by reference herein and therein, contain "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. These statements relate to future events or to our future operating or financial performance and involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements to be materially different from any future results, performances or achievements expressed or implied by the forward-looking statements.

In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “could,” “would,” “expects,” “plans,” “anticipates,” “believes,” “estimates,” “projects,” “predicts,” “potential” and similar expressions intended to identify forward-looking statements. These statements reflect our current views with respect to future events and are based on assumptions and are subject to risks and uncertainties. As such, our actual results may differ significantly from those expressed in any forward-looking statements. Given these uncertainties, you should not place undue reliance on these forward-looking statements.

We discuss many of these risks in greater detail under “Risk Factors” in this prospectus, in the “Business” and “Management's Discussion and Analysis of Financial Condition and Results of Operations” sections incorporated by reference from our most recent Annual Report on Form 10-K and in our Quarterly Reports on Form 10-Q for the quarterly periods ended subsequent to our filing of such Annual Report on Form 10-K, as well as any amendments thereto reflected in subsequent filings with the SEC.

Also, these forward-looking statements represent our estimates and assumptions only as of the date of the document containing the applicable statement. Unless required by law, we undertake no obligation to update or revise any forward-looking statements to reflect new information or future events or developments. Thus, you should not assume that our silence over time means that actual events are bearing out as expressed or implied in such forward-looking statements. You should read this prospectus, any applicable prospectus supplement, together with the documents that we have filed with the SEC that are incorporated by reference and any free writing prospectus we have authorized for use in connection with this offering, completely and with the understanding that our actual future results may be materially different from what we expect. We qualify all of the forward-looking statements in the foregoing documents by these cautionary statements.

PROSPECTUS SUMMARY

This summary highlights certain information about us, this offering and selected information contained elsewhere in or incorporated by reference into this prospectus. This summary is not complete and does not contain all of the information that you should consider before making an investment decision. For a more complete understanding of our company, you should read and consider carefully the more detailed information included or incorporated by reference in this prospectus and any applicable prospectus supplement, including the factors described under the heading “Risk Factors” beginning on page 3 of this prospectus, as well as the information incorporated by reference from our most recent Annual Report on Form 10-K and our most recent Quarterly Report on Form 10-Q, before making an investment decision.

Company Overview

We are a biotechnology company focused on the discovery, development and commercialization of novel anti-infectives for the treatment of diseases that are inadequately addressed by current standard of care therapies. We are developing a balanced pipeline of product and development candidates, with an initial focus on serious fungal and bacterial infections. Our lead product candidate is rezafungin acetate, an intravenous formulation of a novel echinocandin. Rezafungin is being developed as a once-weekly, high-exposure therapy for the treatment and prevention of serious, invasive fungal infections.

In addition, we are developing our antibody-drug conjugates, or ADCs, for multidrug-resistant bacterial infections as part of our proprietary Cloudbreak™ platform, which is designed to discover compounds that directly kill pathogens and also direct a patient’s immune system to attack and eliminate bacterial, fungal or viral pathogens.

Rezafungin

Rezafungin is a novel molecule in the echinocandin class of antifungals. We are developing rezafungin for the treatment and prevention of serious, invasive fungal infections, including candidemia and invasive candidiasis, associated with high mortality rates.

Cloudbreak Immunotherapy Platform

We continue to advance our Cloudbreak immunotherapy platform, which we believe has broad potential applications across a wide spectrum of infectious diseases, including bacterial, fungal and viral infections. We believe that our Cloudbreak immunotherapy platform is a fundamentally new approach for the treatment of infectious disease. To date, we have generated preclinical, in vivo proof of concept data in both our Cloudbreak antibacterial program and our Cloudbreak antifungal program.

Company Information

We were incorporated in Delaware as K2 Therapeutics, Inc. in December 2012. In July 2014, we changed our name to Cidara Therapeutics, Inc. Our principal executive offices are located at 6310 Nancy Ridge Drive, Suite 101, San Diego, California 92121, and our telephone number is (858) 752-6170. Our corporate website address is www.cidara.com. Information contained on or accessible through our website is not a part of, and is not incorporated into, this prospectus supplement or the accompanying prospectus, and you should not consider it part of this prospectus supplement or the accompanying prospectus. The inclusion of our website address in this prospectus supplement is an inactive textual reference only.

Private Placement

On May 21, 2018, we entered into a Subscription Agreement, or the Subscription Agreement, with the selling stockholders, pursuant to which we agreed to sell and issue to the selling stockholders warrants to purchase an aggregate of 12,499,997 shares of our common stock at a purchase price of $0.125 per share. The aggregate purchase price paid by the selling stockholders was $1,562,499.64. We completed the closing of this private placement on May 25, 2018.

As required by the Subscription Agreement, we agreed to, among other things, (i) file a registration statement with the SEC to cover the resale of the shares by the selling stockholders, (ii) cause such registration statement to become effective following the filing thereof and (iii) take all other actions as may be necessary to keep such registration statement continuously effective during the timeframes set forth in the Subscription Agreement.

The registration statement of which this prospectus is a part relates to the resale of the shares of common stock that may be issued to the selling stockholders in connection with the exercise of the warrants issued in the foregoing private placement.

The Offering



Common stock offered by the selling stockholders		12,499,997 shares
Terms of the offering		Each selling stockholder will determine when and how it will sell the common stock offered in this prospectus, as described in “Plan of Distribution.”
Use of proceeds		We will not receive any proceeds from the sale of shares of our common stock by the selling stockholders.
Risk factors		See “Risk Factors” beginning on page 3, for a discussion of factors you should carefully consider before deciding to invest in our common stock.
Nasdaq Global Market symbol		CDTX

The selling stockholders named in this prospectus may offer and sell up to 12,499,997 shares of our common stock. Our common stock is currently listed on The Nasdaq Global Market under the symbol “CDTX.” Shares of common stock that may be offered under this prospectus will be fully paid and non-assessable. We will not receive any of the proceeds of sales by the selling stockholders of any of the common stock covered by this prospectus. Throughout this prospectus, when we refer to the shares of our common stock being registered on behalf of the selling stockholders for offer and resale, we are referring to the shares of common stock issued to the selling stockholders in connection with the exercise of warrants issued in our private placement as described above. When we refer to the selling stockholders in this prospectus, we are referring to the selling stockholders identified in this prospectus and, as applicable, their permitted transferees or other successors-in-interest that may be identified in a supplement to this prospectus or, if required, a post-effective amendment to the registration statement of which this prospectus is a part.

RISK FACTORS

Investing in our common stock involves a high degree of risk. Before making an investment decision, you should carefully consider the risks described in the sections entitled “Risk Factors” in our most recent Annual Report on Form 10-K and subsequent Quarterly Reports on form 10-Q, as filed with the SEC, which are incorporated herein by reference in their entirety, as well any amendment or updates to our risk factors reflected in subsequent filings with the SEC, including any applicable prospectus supplement. Our business, financial condition, results of operations or prospects could be materially adversely affected by any of these risks. The trading price of our securities could decline due to any of these risks, and you may lose all or part of your investment. This prospectus and the documents incorporated herein by reference also contain forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in these forward-looking statements as a result of certain factors, including the risks mentioned elsewhere in this prospectus. For more information, see the section entitled “Where You Can Find More Information.” Please also read carefully the section entitled “Special Note Regarding Forward-Looking Statements.”

USE OF PROCEEDS

We will not receive any of the proceeds from the sale or other disposition of shares of our common stock held by the selling stockholders pursuant to this prospectus. We will bear the out-of-pocket costs, expenses and fees incurred in connection with the registration of shares of our common stock to be sold by the selling stockholders, including registration, listing and qualifications fees, printers and accounting fees, and fees and disbursements of counsel, or collectively, the Registration Expenses. Other than Registration Expenses, the selling stockholders will bear underwriting discounts, commissions, placement agent fees or other similar expenses payable with respect to sales of shares.

SELLING STOCKHOLDERS

We are registering the resale of 12,499,997 shares of common stock which are issuable upon the exercise of warrants held by the selling stockholders identified below to permit each of them, or their permitted transferees or other successors-in-interest that may be identified in a supplement to this prospectus or, if required, a post-effective amendment to the registration statement of which this prospectus is a part, to resell or otherwise dispose of these shares in the manner contemplated under the section entitled “Plan of Distribution” in this prospectus (as may be supplemented and amended).

The selling stockholders may sell some, all or none of their shares. We do not know how long the selling stockholders will hold the shares before selling them, and we currently have no agreements, arrangements or understandings with the selling stockholders regarding the sale or other disposition of any of the shares. The shares covered hereby may be offered from time to time by the selling stockholders. As a result, we cannot estimate the number of shares of common stock each of the selling stockholders will beneficially own after termination of sales under this prospectus. In addition, each of the selling stockholders may have sold, transferred or otherwise disposed of all or a portion of its shares of common stock since the date on which it provided information for this table.

Beneficial ownership is determined in accordance with the rules of the SEC and includes voting or investment power with respect to our common stock. Generally, a person “beneficially owns” shares of our common stock if the person has or shares with others the right to vote those shares or to dispose of them, or if the person has the right to acquire voting or disposition rights within 60 days.

The information in the table below and the footnotes thereto regarding shares of common stock to be beneficially owned after the offering assumes the sale of all shares being offered by the selling stockholders under this prospectus. The percentage of shares owned prior to and after the offering is based on 27,678,169 shares of common stock outstanding as of June 15, 2018. This information has been obtained from the selling stockholders or in Schedules 13G or 13D and other public documents filed with the SEC.



	Before Offering					After Offering
Name and Address⁽¹⁾	Number of Shares Beneficially Owned	Percentage of Shares Beneficially Owned		Number of Shares Offered⁽²⁾		Number of Shares Beneficially Owned	Percentage of Shares Beneficially Owned
Entities affiliated with BVF Partners L.P.⁽³⁾	3,209,835	9.99	%	7,500,002	⁽⁴⁾	4,458,585	9.99	%
Opaleye L.P.⁽⁵⁾	2,610,000	9.0	%	1,410,000		1,200,000	3.0	%
Omega Fund V, LP⁽⁶⁾	2,758,793	9.5	%	1,249,999		1,508,794	3.8	%
Entities affiliated with Monashee Investment Management LLC⁽⁷⁾	1,045,850	3.7	%	564,999		480,851	1.2	%
Laurence Lytton ⁽⁸⁾	1,390,222	4.99	%	524,999		1,208,232	3.0	%
Stonepine Capital, LP⁽⁹⁾	925,529	3.3	%	499,998		425,531	1.1	%
Entities affiliated with DAFNA Capital Management, LLC⁽¹⁰⁾	462,766	1.7	%	250,000		235,898	*
Jeffrey Stein⁽¹¹⁾	982,593	3.5	%	250,000		732,593	1.8	%
Lincoln Park Capital, LLC⁽¹²⁾	465,266	1.7	%	250,000		215,266	*


*	Less than one percent.

(1)

If required, information about other selling security holders, except for any future transferees, pledgees, donees or successors of the selling security holders named in the table above, will be set forth in a prospectus supplement or amendment to the registration statement of which this prospectus is a part. Additionally, post-effective amendments to the registration statement will be filed to disclose any material changes to the plan of distribution from the description contained in the final prospectus.


(2)	Assumes sale of all shares available for sale under this prospectus and no further acquisitions of shares by the selling stockholders.

(3)

Includes (i) 939,424 shares of common stock held by Biotechnology Value Fund, L.P., or BVF, (ii) 639,687 shares of common stock held by Biotechnology Value Fund II, L.P., or BVF II, (iii) 155,018 shares of common stock held by Biotechnology Value Trading Fund OS, L.P., or BVFOS, (iv) 80,724 shares of common stock held by Investment 10, L.L.C., or Investment 10, and (v) 115,817 shares of common stock held by MSI BVF SPV, L.L.C., or MSI, and together with BVF, BVF II, BVFOS and Investment 10, the BVF Investment Entities. BVF Partners L.P., or BVF Partners, is the general partner of BVF and BVF II and the investment manager of each of BVFOS, Investment 10 and MSI and may be deemed to beneficially own the shares held by the BVF Investment Entities. BVF, Inc., as the general partner of BVF Partners, may be deemed to beneficially own the shares beneficially owned by BVF Partners. Mark Lampert, as a director and officer of BVF Inc., may be deemed to beneficially own the shares beneficially owned by BVF, Inc. The number of shares beneficially owned by BVF Partners includes 1,279,165 shares of common stock issuable upon the conversion of Series X Preferred Stock beneficially owned by BVF Partners. The number of shares beneficially owned by BVF Partners is limited by beneficial ownership limitations applicable to the Series X Preferred Stock and warrants held by the BVF Investment Entities, which limit the number of shares BVF Partners can beneficially own to 9.99% of the number of shares of common stock outstanding. As a result of such limitations, the voting and disposition rights to 3,173,145 shares of common stock issuable upon the conversion of Series X Preferred Stock held by the BVF Investment Entities and 7,500,002 shares of common stock issuable upon the exercise of warrants held by the BVF Investment Entities are not acquirable by the BVF Investment Entities within 60 days and, therefore, are not included in the number of shares beneficially owned by BVF Partners.

(4)

Consists of (i) 3,649,460 shares of common stock issuable upon the exercise of warrants held by BVF, (ii) 2,484,899 shares of common stock issuable upon the exercise of warrants held by BVF II, (iii) 602,173 shares of common stock issuable upon the exercise of warrants held by BVFOS, (iv) 313,577 shares of common stock issuable upon the exercise of warrants held by Investment 10, and (v) 449,893 shares of common stock issuable upon the exercise of warrants held by MSI.


(5)	Consists of (i) 1,200,000 shares of common stock held by Opaleye L.P., or Opaleye, and (ii) 1,410,000 shares of common stock issuable upon the exercise of warrants held by Opaleye. James Silverman, as general partner of Opaleye, may be deemed to beneficially own the shares beneficially owned by Opaleye. The address for Opaleye is One Boston Place, 26^th Floor, Boston, MA 02108.

(6)

Consists of (i) 1,508,794 shares of common stock held by Omega Fund V, LP, or Omega, and (ii) 1,249,999 shares of common stock issuable upon the exercise of warrants held by Omega. Omega Funds is the General Partner of Omega and by virtue of such status may be deemed to be the beneficial owner of the shares held by Omega. Richard Lin is the Director of Omega Funds and therefore may be deemed to be the beneficial owner of the shares beneficially owned by Omega. The address for Omega Funds is 185 Dartmouth St., Suite 502, Boston MA 02116.

(7)

Consists of (i) 51,388 shares of common stock held by Monashee Capital Master Fund LP, or Monashee Capital, (ii) 60,364 shares of common stock held by Monashee Pure Alpha Capital Master Fund LP, or Monashee Pure Alpha, (iii) 369,099 shares of common stock held by MM LS Opportunities Master Fund, L.P, or MM LS, and collectively with Monashee Capital and Monashee Pure Alpha, the Monashee Funds, (iv) 60,381 shares of common stock issuable upon the exercise of warrants held by Monashee Capital, (v) 70,927 shares of common stock issuable upon the exercise of warrants held by Monashee Pure Alpha and (vi) 433,691 shares of common stock issuable upon the exercise of warrants held by MM LS. Monashee Investment Management LLC, as the general partner of the Monashee Funds, has voting and investment power over all of the shares held by the Monashee Funds and therefore may be deemed to be the beneficial owner of the shares held by the Monashee Funds. The address for Monashee Investment Management LLC is 125 High Street, 28^th Floor, Boston, MA 02110.

(8)

Consists of (i) 1,144,007 shares of common stock held by Laurence Lytton, (ii) 29,525 shares of common stock held by AWL Family LLC, (iii) 17,772 shares of common stock held by the WWL Trust, and (iv) 16,928 shares of common stock held in other related accounts. The number of shares beneficially owned by Mr. Lytton is limited by a beneficial ownership limitation applicable to the warrants held by Mr. Lytton, which limits the number of shares Mr. Lytton can beneficially own to 4.99% of the number of shares of common stock outstanding. As a result of such limitation, 181,990 shares issuable upon the exercise of warrants held by Mr. Lytton are included in the number of shares beneficially owned by Mr. Lytton and 343,009 shares issuable upon the exercise of warrants held by Mr. Lytton are not included in the number of shares beneficially owned by Mr. Lytton because the voting and disposition rights of such shares are not acquirable by Mr. Lytton within 60 days.

(9)

Consists of (i) 425,531 shares of common stock held by Stonepine Capital, L.P., or Stonepine, and (ii) 499,998 shares of common stock issuable upon the exercise of warrants held by Stonepine. Stonepine Capital Management, LLC is the general partner of Stonepine. Jon M. Plexico and Timothy P. Lynch, the managing members of Stonepine Capital Management, LLC, have voting and investment power over all of the shares held by Stonepine and disclaim beneficial ownership of such shares, except to the extent of their pecuniary interest in such shares. The address for Stonepine Capital Management, LLC is 919 NW Bond St., Suite 204, Bend OR 97703.

(10)

Consists of (i) 127,660 shares of common stock held by DAFNA Life Science LP, or DAFNA, (ii) 85,106 shares of common stock held by DAFNA Life Science Select LP, or DAFNA Select, and, together with DAFNA, the DAFNA Funds, (iii) 150,000 shares of common stock issuable upon the exercise of warrants held by DAFNA and (iv) 100,000 shares of common stock issuable upon the exercise of warrants held by DAFNA Select. DAFNA Capital Management, LLC, or DAFNA Capital, is the investment advisor of the DAFNA Funds and by virtue of such status may be deemed to be the beneficial owner of the shares held by them. Each of Nathan Fischel, as the Chief Executive Officer of DAFNA Capital, and Fariba Ghodsian, as the Chief Investment Officer of DAFNA Capital, has voting and investment power with respect to the shares held by the DAFNA Funds and therefore may be deemed to be the beneficial owner of the shares held by such entities. The address for DAFNA Capital is 10990 Wilshire Boulevard, Suite 1400, Los Angeles, California.

(11)

Consists of (i) 528,476 shares of common stock held by Jeffrey Stein, (ii) 203,697 shares of common stock held by the Jeff Stein and Catherine Naughton Revocable Trust, (iii) 420 shares of common stock held by Dr. Stein’s son and (iv) 250,000 shares of common stock issuable upon the exercise of warrants held by Dr. Stein. The address for Dr. Stein is 6310 Nancy Ridge Drive, Suite 101, San Diego, California 92121.

(12)

Consists of (i) 215,266 shares of common stock held by Lincoln Park Capital Fund, LLC, or Lincoln Park, and (ii) 250,000 shares of common stock issuable upon the exercise of warrants held by Lincoln Park. Joshua Scheinfeld and Jonathan Cope, the principals of Lincoln Park, are deemed to be beneficial owners of all the shares of common stock owned by Lincoln Park. Messrs. Scheinfeld and Cope have shared voting and dispositive power with respect to the shares held by Lincoln Park. The address for Lincoln Park is 440 N. Wells St., Suite 410, Chicago, IL 60654.

Relationship with Selling Stockholders

As discussed in greater detail above under the section “Prospectus Summary – Private Placement,” on May 21, 2018, we entered into the Subscription Agreement with the selling stockholders pursuant to which we sold warrants to purchase shares of common stock to the selling stockholders and agreed with the selling stockholders to file a registration statement to enable the resale of the shares issuable upon exercise of the warrants. Other than Dr. Stein, who is our President and Chief Executive Officer, none of the selling stockholders or any persons having control over such selling stockholders has held any position or office with us or our affiliates within the last three years or has had a material relationship with us or any of our predecessors or affiliates within the past three years, other than as a result of the ownership of our shares or other securities.

PLAN OF DISTRIBUTION

We are registering the shares of common stock issuable to the selling stockholders upon the exercise of the selling stockholders’ warrants to permit the resale of such shares of common stock by such holders from time to time after the date of this prospectus. We will not receive any of the proceeds from the sale by the selling stockholders of the shares of common stock. We will bear all fees and expenses incident to our obligation to register such shares of common stock.

Each selling stockholder, which may include donees, pledgees, transferees or other successors-in-interest selling shares of common stock or interests in shares of common stock received after the date of this prospectus from a selling stockholder as a gift, pledge, partnership distribution or other transfer, may, from time to time, sell, transfer or otherwise dispose of any or all of its shares of common stock or interests in shares of common stock on any stock exchange, market or trading facility on which the shares are traded or in private transactions. These dispositions may be at fixed prices, at prevailing market prices at the time of sale, at prices related to the prevailing market price, at varying prices determined at the time of sale, or at privately negotiated prices.

A selling stockholder may use any one or more of the following methods when disposing of shares or interests therein:


•	ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers;


•	block trades in which the broker-dealer will attempt to sell the shares as agent, but may position and resell a portion of the block as principal to facilitate the transaction;


•	purchases by a broker-dealer as principal and resale by the broker-dealer for its own account;


•	an exchange distribution in accordance with the rules of the applicable exchange;


•	privately negotiated transactions;


•	to the extent permitted by law, short sales effected after the date the registration statement of which this prospectus is a part is declared effective by the SEC;


•	through the writing or settlement of options or other hedging transactions, whether through an options exchange or otherwise;


•	through agreements between broker-dealers and the selling stockholders to sell a specified number of such shares at a stipulated price per share;


•	a combination of any such methods of sale; and


•	any other method permitted by applicable law.

The selling stockholders may, from time to time, pledge or grant a security interest in some or all of the shares of common stock owned by them and, if they default in the performance of their secured obligations, the pledgees or secured parties may offer and sell the shares of common stock, from time to time, under this prospectus, or under an amendment to this prospectus under Rule 424(b) or other applicable provision of the Securities Act amending the list of selling stockholders to include the pledgee, transferee or other successors in interest as selling stockholders under this prospectus. The selling stockholders also may transfer the shares of common stock in other circumstances, in which case the pledgees, transferees or other successors in interest will be the selling beneficial owners for purposes of this prospectus.

In connection with the sale of our common stock or interests therein, the selling stockholders may enter into hedging transactions with broker-dealers or other financial institutions, which may in turn engage in short sales of the common stock in the course of hedging the positions they assume. The selling stockholders may also sell shares of our common stock short and deliver these securities to close out their short positions, or loan or pledge the common stock to broker-dealers that in turn may sell these securities. The selling stockholders may also enter into options or other transactions with broker-dealers or other financial institutions or the creation of one or more derivative securities which require the delivery to each such broker-dealer or other financial institution of shares offered by this prospectus, which shares such broker-dealer or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such transaction).

The aggregate proceeds to the selling stockholders from the sale of the common stock offered by them will be the purchase price of the common stock less discounts or commissions, if any. Each of the selling stockholders reserves the right to accept and, together with its agents from time to time, to reject, in whole or in part, any proposed purchase of common stock to be made directly or through agents. We will not receive any of the proceeds from this offering.

The selling stockholders also may resell all or a portion of the shares in open market transactions, rather than under this prospectus, in reliance upon Rule 144 under the Securities Act, provided that they meet the criteria and conform to the requirements of that rule.

The selling stockholders and any underwriters, broker-dealers or agents that participate in the sale of the common stock or interests therein may be “underwriters” within the meaning of Section 2(11) of the Securities Act. Any discounts, commissions, concessions or profit they earn on any resale of the shares may be underwriting discounts and commissions under the Securities Act. Selling stockholders who are “underwriters” within the meaning of Section 2(11) of the Securities Act will be subject to the prospectus delivery requirements of the Securities Act.

To the extent required, the shares of our common stock to be sold, the names of the selling stockholders, the respective purchase prices and public offering prices, the names of any agents, dealer or underwriter, and any applicable commissions or discounts with respect to a particular offer will be set forth in an accompanying prospectus supplement or, if appropriate, a post-effective amendment to the registration statement that includes this prospectus.

If underwriters are used in the sale, the shares of common stock will be acquired by the underwriters for their own account and may be resold from time to time in one or more transactions, including negotiated transactions, at a fixed public offering price or at varying prices determined at the time of sale. In connection with any such underwritten sale of shares of common stock, underwriters may receive compensation from the selling stockholders, for whom they may act as agents, in the form of discounts, concessions or commissions. If the selling stockholders use an underwriter or underwriters to effectuate the sale of shares of common stock, we and/or they will execute an underwriting agreement with those underwriters at the time of sale of those shares of common stock. To the extent required by law, the names of the underwriters will be set forth in a prospectus supplement or, if appropriate, a post-effective amendment to the registration statement that includes the prospectus supplement and the accompanying prospectus used by the underwriters to sell those securities. The obligations of the underwriters to purchase those shares of common stock will be subject to certain conditions precedent, and unless otherwise specified in a prospectus supplement, the underwriters will be obligated to purchase all the shares of common stock offered by such prospectus supplement if any of such shares of common stock are purchased. Any public offering price and any discounts or concessions allowed or re-allowed or paid to dealers may be changed from time to time.

We have advised the selling stockholders that the anti-manipulation rules of Regulation M under the Exchange Act may apply to sales of shares in the market and to the activities of the selling stockholders and their affiliates. The selling stockholders may indemnify any broker-dealer that participates in transactions involving the sale of the shares against certain liabilities, including liabilities arising under the Securities Act.

We are required to pay certain fees and expenses incurred by us incident to the registration of the shares of common stock of the selling stockholders. We have agreed to indemnify the selling stockholders against certain losses, claims, damages and liabilities, including liabilities under the Securities Act, and the selling stockholders may be entitled to contribution. We may be indemnified by the selling stockholders against certain losses, claims, damages and liabilities, including liabilities under the Securities Act that may arise from any written information furnished to us by the selling stockholders specifically for use in this prospectus, or we may be entitled to contribution.

We have agreed with the selling stockholders to keep the registration statement of which this prospectus constitutes a part effective until the earlier of (1) such time as all of the shares covered by this prospectus have been disposed of pursuant to and in accordance with the registration statement or (2) the date on which all of the shares may be sold without restriction pursuant to Rule 144 of the Securities Act.

EXPERTS

Ernst & Young LLP, independent registered public accounting firm, has audited our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2017, as set forth in their report, which is incorporated by reference in this prospectus and elsewhere in the registration statement. Our financial statements are incorporated by reference in reliance on Ernst & Young LLP’s report, given on their authority as experts in accounting and auditing.

LEGAL MATTERS

Certain legal matters, including the validity of the shares of common stock offered pursuant to this registration statement, will be passed upon for us by Cooley LLP, San Diego, California.

WHERE YOU CAN FIND MORE INFORMATION

We must comply with the informational requirements of the Exchange Act, and we are required to file reports and proxy statements and other information with the SEC. You may read and copy these reports, proxy statements and other information at the Public Reference Room maintained by the SEC at 100 F Street, N.E., Washington, D.C. 20549. You may also obtain copies at the prescribed rates from the Public Reference Section of the Securities and Exchange Commission at its principal office in Washington, D.C. You may call the SEC at 1-800-SEC-0330 for further information about the public reference room. The SEC also maintains a website that contains reports, proxy and information statements and other information regarding issuers like us that file electronically with the SEC. You may access the SEC’s web site at http://www.sec.gov. We maintain a website at www.cidara.com. The information contained in, or that can be accessed through, our website is not incorporated by reference herein and is not part of this prospectus.

Statements contained in this prospectus as to the contents of any contract or other document are not necessarily complete, and in each instance we refer you to the copy of the contract or document filed as an exhibit to the registration statement, each such statement being qualified in all respects by such reference.

INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

The SEC allows us to incorporate by reference in this prospectus the information that we file with it. Incorporation by reference means that we can disclose important information to you by referring you to other documents that are legally considered to be part of this prospectus. Later information that we file with the SEC will automatically update and supersede the information in this prospectus, any supplement and the documents listed below. Our SEC file number is 001-36912. We incorporate by reference the specific documents listed below and any future filings made with the SEC under Section 13(a), 13(c), 14, or 15(d) of the Exchange Act, as amended, until all of the shares of common stock covered by this prospectus are sold:


•	our Annual Report on Form 10-K for the year ended December 31, 2017, filed with the SEC on February 27, 2018;


•	our Quarterly Report on Form 10-Q for the fiscal quarter ended March 31, 2018;


•	the information specifically incorporated by reference in our Annual Report on Form 10-K for the year ended December 31, 2017, from our definitive proxy statement relating to our 2018 annual meeting of stockholders, which was filed on April 27, 2018;


•	our Current Reports on Form 8-K filed on March 19, 2018, March 19, 2018, March 21, 2018, April 26, 2018, May 21, 2018 and June 18, 2018;


•	the description of our common stock in our registration statement on Form 8-A filed with the SEC on April 9, 2015, including any amendments or reports filed for the purpose of updating such description; and

•

all documents filed by us with the SEC pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act (other than Current Reports furnished under Item 2.02 or Item 7.01 of Form 8-K and exhibits filed on such forms that are related to such items) after the date of the initial registration statement of which this prospectus is a part and prior to effectiveness of such registration statement, provided that all documents “furnished” by the Company to the SEC and not “filed” are not deemed incorporated by reference herein.

We will furnish without charge to each person, including any beneficial owner, to whom this prospectus is delivered, upon written or oral request, a copy of any document incorporated by reference. Requests should be addressed to 6310 Nancy Ridge Drive, Suite 101, San Diego, California 92121, Attn: Secretary or may be made telephonically at (858) 752-6170.

You should rely only on the information incorporated by reference or provided in this prospectus or any prospectus supplement. We have not authorized anyone to provide you with different information. You should not assume that the information contained in this prospectus or the accompanying prospectus supplement is accurate on any date subsequent to the date set forth on the front of the document or that any information we have incorporated by reference is correct on any date subsequent to the date of the document incorporated by reference, even though this prospectus and any accompanying prospectus supplement is delivered or securities are sold on a later date.