DBV Technologies (DBVT) 6-K DBV Technologies Announces the Launch of a Proposed Global Offering of Ordinary Shares, Which May Be in the Form of American Depositary Shares

Exhibit 99.1

DBV Technologies Announces the Launch of a Proposed Global Offering of Ordinary Shares, Which May Be in the Form of American Depositary Shares

DBV Technologies (the “Company”) (Euronext: DBV – ISIN: FR0010417345 – Nasdaq Stock Market: DBVT), a clinical-stage biopharmaceutical company, today announced its intention to issue and sell, subject to market conditions, in a global offering of new ordinary shares, which may be in the form of American Depositary Shares (ADSs), up to 5,217,392 new ordinary shares, the subscription of which is reserved to specified categories of investors. The global offering will be comprised of an offering of ADSs in the United States, Canada and certain other countries outside of Europe and a private placement of ordinary shares in Europe (including France). In addition, the Company intends to grant the underwriters a30-day option to purchase additional ordinary shares, which may be in the form of ADSs, in an aggregate amount of up to 782,608 ordinary shares (including in the form of ADSs) proposed to be sold in the global offering, on the same terms and conditions. Each ADS offered represents the right to receiveone-half of one ordinary share. The ADSs are listed on the Nasdaq Global Select Market under the symbol “DBVT”, and the Company’s ordinary shares are listed on Euronext Paris under the symbol “DBV”.

Goldman Sachs & Co. LLC and Citigroup are acting as joint lead book-running managers for the global offering. H.C. Wainwright & Co. is acting as lead manager for the global offering (together, the “Underwriters”).

The price in euros at which ordinary shares will be sold and the price in dollars at which ADSs will be sold in the global offering, as well as the final number of ordinary shares (including in the form of ADSs), will be determined following a bookbuilding process commencing immediately and will not be less than (i) the volume weighted-average of the trading price of the Company’s ordinary shares on Euronext Paris on the trading day prior to pricing of the global offering or (ii) the average of the trading prices of the Company’s ordinary shares on Euronext Paris over five (5) consecutive trading days chosen from among the thirty (30) trading days prior to pricing of the global offering, subject to a maximum discount, in each case, of 15%. The new ordinary shares will be issued through a capital increase without

shareholders’pre-emptive rights reserved to a category of persons under the provisions of Article L.225-138 of the French Commercial Code and pursuant to the decision of the Company’s Board of Directors (Conseil d’Administration) on April 3, 2019, in accordance with the delegations granted pursuant to the Resolutions 25, 26 and 28 adopted at the ordinary and extraordinary meeting of the Company’s shareholders (Assemblée Générale Mixte) held on June 22, 2018. The global offering will be open only to persons who are natural persons or legal entities, including companies, trusts, investment funds or other investment vehicles whatever their form, governed by either French or foreign law, that invest on a regular basis in the pharmaceutical, biotechnological or medical technology sector; and/or companies, institutions or entities whatever their form, French or foreign, that carry out a significant part of their activity in these sectors. In order to purchase ordinary shares and/or ADSs, potential investors will be required to execute and provide to the Underwriters an investor letter representing that they satisfy the foregoing investor criteria.

The final number of ordinary shares offered, including the number of ordinary shares offered in the form of ADSs, and the subscription price therefor will be decided by the Company’s Chief Executive Officer (Directeur Général), in accordance with asub-delegation granted by the Company’s Board of Directors (Conseil d’Administration) on April 3, 2019, further to the favorable opinion of Mr. Michel de Rosen, independent director and Chairman of the Board of Directors; provided, that in no event shall the Company be permitted to issue more than 20% of its share capital outstanding prior to commencement of the global offering.

The global offering will commence immediately and the Company plans to announce the result of the global offering as soon as practicable after pricing thereof in a subsequent press release. The Company plans to use the net proceeds from the global offering, together with its existing cash and cash equivalents, to fund the development and, if approved, prepare for the commercialization of Viaskin Peanut, to advance development of the Company’s other product candidates and for working capital and general corporate purposes.

Entities affiliated with Baker Bros. Advisors LP and Bpifrance Participations S.A., which are existing shareholders, have indicated an interest in purchasing, in the aggregate, at least 25.0% of the ordinary shares (including in the form of ADSs) in this offering at the public offering price. However, because indications of interest are not binding agreements or commitments to purchase, the underwriters may determine to sell more, fewer or no ordinary shares and/or ADSs in this offering to these entities, or these entities may determine to purchase more, fewer or no ordinary shares and/or ADSs in this offering.

The representatives of Baker Bros. Advisors LP and Bpifrance Participations S.A. to the Company’s Board of Directors (Conseil d’Administration) did not take part in the vote on the resolutions (relating to the approval for the launch of the global offering and for the delegation of authority) at the meeting of the Board of Directors (Conseil d’Administration) held on April 3, 2019.

A registration statement on FormF-3, as amended, relating to the securities to be issued in the global offering was filed with the Securities and Exchange Commission and initially became automatically effective on July 27, 2016. The offering of ordinary shares in the form of ADSs will be made only by means of a written prospectus and prospectus supplement that form a part of the registration statement. A preliminary prospectus supplement and accompanying prospectus relating to and describing the terms of the offering will be filed with the Securities and Exchange Commission and will be available on the Securities and Exchange Commission’s website atwww.sec.gov. When available, copies of the preliminary prospectus supplement and accompanying prospectus may also be obtained for free from: Goldman Sachs & Co. LLC, Attention: Prospectus Department, 200 West Street, New York, NY 10282, via telephone:1-866-471-2526, facsimile:212-902-9316 or via email:prospectusgroup-ny@ny.email.gs.com; or Citigroup, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York, 11717 or via telephone:800-831-9146. No prospectus subject to approval by the French Autorité des Marchés Financiers (AMF) has been filed in France in connection with the global offering.

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About DBV Technologies

DBV Technologies is developing Viaskin^®, a proprietary technology platform with broad potential applications in immunotherapy. Viaskin is based on epicutaneous immunotherapy, or EPIT^®, DBV’s method of delivering biologically active compounds to the immune system through intact skin. With this new class of self-administered andnon-invasive product candidates, the Company is dedicated to safely transforming the care of food allergic patients, for whom there are no approved treatments. DBV’s food allergies programs include ongoing clinical trials of Viaskin Peanut and Viaskin Milk, and preclinical development of Viaskin Egg. DBV is also pursuing a humanproof-of-concept clinical trial of Viaskin Milk for the treatment of Eosinophilic

Esophagitis, and exploring potential applications of its platform in vaccines and other immune diseases. DBV Technologies has global headquarters in Montrouge, France and offices in Bagneux, France, Summit, NJ and New York, NY. The Company’s ordinary shares are traded on segment B of Euronext Paris (Ticker: DBV, ISIN code: FR0010417345), part of the SBF120 index, and the Company’s ADSs (each representingone-half of one ordinary share) are traded on the Nasdaq Global Select Market (Ticker: DBVT).

Forward Looking Statements

This press release contains forward-looking statements, including statements about the proposed global offering and the anticipated use of proceeds from the offering. These forward-looking statements are not promises or guarantees and involve substantial risks and uncertainties. Factors that could cause actual results to differ materially from those described or projected herein include risk associated with market and other financing conditions, risks associated with clinical trials and regulatory reviews and approvals, and risk related to the sufficiency of the Company’s existing cash resources and liquidity. A further list and description of these risks, uncertainties and other risks can be found in the Company’s regulatory filings with the French Autorité des Marchés Financiers and U.S. Securities and Exchange Commission, including in the Company’s Annual Report on Form20-F for the year ended December 31, 2018. Existing and prospective investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. The Company undertakes no obligation to update or revise forward-looking statements as a result of new information, future events or circumstances, or otherwise, except as required by law.

DBV Investor Relations Contact

Sara Blum Sherman

Senior Director, Investor Relations & Strategy

+1 212-271-0740

sara.sherman@dbv-technologies.com

DBV Media Contact

Joe Becker

VP, Global Corporate Communications

+1-646-650-3912

joseph.becker@dbv-technologies.com

Disclaimers

This press release does not constitute an offer to sell nor a solicitation of an offer to buy, nor shall there be any sale of ordinary shares or ADSs in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction, including France.

The distribution of this document may, in certain jurisdictions, be restricted by local legislations. Persons into whose possession this document comes are required to inform themselves about and to observe any such potential local restrictions.

No prospectus subject to approval by the French Autorité des Marchés Financiers (AMF) will be filed in connection with the global offering. Copies of the Company’s Reference Document, including the risk factors, registered by the AMF on April 1, 2019, under No.D.19-0235, are available for free at the Company’s head office located at177-181 avenue Pierre Brossolette, 92120 Montrouge, France, and on the AMF’s website(www.amf-france.org).

This document does not constitute an offer to the public in France and the securities referred to in this document can only be offered or sold in France pursuant to article L.411-2-II of the French Monetary and Financial Code to (i) providers of third party portfolio management investment services, (ii) qualified investors (investisseurs qualifiés) acting for their own account and/or (iii) a limited group of investors (cercle restreint d’investisseurs) acting for their own account, all as defined in and in accordance with articles L.411-1, L.411-2 and D.411-1 to D.411-4 and D.754-1 and D.764-1 of the French Monetary and Financial Code.

This announcement is not an advertisement and not a prospectus within the meaning of Directive 2003/71/EC of the European Parliament and of the Council of 4 November 2003, as amended (the “Prospectus Directive”).

With respect to the member States of the European Economic Area, no action has been undertaken or will be undertaken to make an offer to the public of the securities referred to herein requiring a publication of a prospectus in any relevant member State. As a result, the securities may not and will not be offered in any relevant member State except in accordance with the exemptions set forth in Article 3(2) of the Prospectus Directive or under any other circumstances which do not require the publication by the Company of a prospectus pursuant to Article 3 of the Prospectus Directive and/or to applicable regulations of that relevant member State.

This document is only being distributed to, and is only directed at, persons in the United Kingdom that (i) are “investment professionals” falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (as amended, the “Order”), (ii) are persons falling within Article 49(2)(a) to (d) (“high net worth companies, unincorporated associations, etc.”) of the Order, or (iii) are persons to whom an invitation or inducement to engage in investment activity (within the meaning of Article 21 of the Financial Services and Markets Act 2000) in connection with the issue or sale of any securities may otherwise lawfully be communicated or caused to be communicated (all such persons together being referred to as “Relevant Persons”). This document is directed only at Relevant Persons and must not be acted on or relied on by persons who are not Relevant Persons. Any investment or investment activity to which this document relates is available only to Relevant Persons and will be engaged in only with Relevant Persons.

MIFID II product governance / Retail investors, professional investors and ECPs only target market – Solely for the purposes of each manufacturer’s product approval process, the target market assessment in respect of the new shares has led to the conclusion that: (i) the target market for the new shares is retail investors, eligible counterparties and professional clients, each as defined in MiFID II; and (ii) all channels for distribution of the new shares to retail investors, eligible counterparties and professional clients are appropriate. Any person subsequently offering, selling or recommending the new shares (a “distributor”) should take into consideration the manufacturers’ target market assessment; however, a distributor subject to MiFID II is responsible for undertaking its own target market assessment in respect of the new shares (by either adopting or refining the manufacturers’ target market assessment) and determining appropriate distribution channels. For the avoidance of doubt, even if the target market includes retail investors, the manufacturers have decided that the new shares will be offered, as part of the initial offering, only to eligible counterparties and professional clients.