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Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934 (Amendment No. )
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Preliminary Proxy Statement
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Definitive Proxy Statement
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Soliciting Material under §240.14a-12
Entasis Therapeutics Holdings Inc.
(Name of Registrant as Specified In Its Charter)
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MMMMMMMMMMMM + C 1234567890 000004 ENDORSEMENT_LINE______________ SACKPACK_____________ MR A SAMPLE DESIGNATION (IF ANY) ADD 1 ADD 2 ADD 3 ADD 4 ADD 5 ADD 6 Online Go to www.envisionreports.com/ETTX or scan the QR code — login details are located in the shaded bar below. Important Notice Regarding the Availability of Proxy Materials for the Entasis Therapeutics Holdings Inc. Stockholder Meeting to be Held on June 10, 2021 Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual stockholders’ meeting are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important! This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The 2020 Annual Report on Form 10-K and 2021 proxy statement to stockholders are available at: www.envisionreports.com/ETTX Easy Online Access — View your proxy materials and vote. Step 1: Step 2: Step 3: Step 4: Step 5: Go to www.envisionreports.com/ETTX. Click on Cast Your Vote or Request Materials. Follow the instructions on the screen to log in. Make your selections as instructed on each screen for your delivery preferences. Vote your shares. When you go online, you can also help the environment by consenting to receive electronic delivery of future materials. Obtaining a Copy of the Proxy Materials – If you want to receive a copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before May 29, 2021 to facilitate timely delivery. + 2 N O T C O Y 03G7LB MMMMMMMMM Stockholder Meeting Notice1234 5678 9012 345
Entasis Therapeutics Holdings Inc. Annual Meeting of Stockholders will be held on Wednesday, June 10, 2021, 9:30 a.m. EDT, via the internet at www.meetingcenter.io/227937811. The password for this meeting is — ETTX2021. Proposals to be voted on at the meeting are listed below along with the Board of Directors’ recommendations. The Board of Directors recommend a vote FOR the nominees listed and FOR Proposal 2: 1.Election of two Class III directors. 2. Ratification of the selection of KPMG LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2021. PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card. Here’s how to order a copy of the proxy materials and select delivery preferences: Current and future delivery requests can be submitted using the options below. If you request an email copy, you will receive an email with a link to the current meeting materials. PLEASE NOTE: You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials. Internet – Go to www.envisionreports.com/ETTX. Click Cast Your Vote or Request Materials. Phone – Call us free of charge at 1-866-641-4276. Email – Send an email to email@example.com with “Proxy Materials Entasis Therapeutics Holdings Inc.” in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials. To facilitate timely delivery, all requests for a paper copy of proxy materials must be received by May 29, 2021. — — — Stockholder Meeting Notice