WATERTOWN, Mass., Dec. 15, 2017 -- Tetraphase Pharmaceuticals, Inc. (NASDAQ:TTPH), a clinical stage biopharmaceutical company developing novel antibiotics to treat life-threatening multidrug-resistant (MDR) infections, today announced that it has been selected for addition to the NASDAQ Biotechnology Index® (NASDAQ:^NBI). The annual re-ranking of the NASDAQ Biotechnology Index will become effective prior to U.S. market open on Monday, December 18, 2017.
The NASDAQ Biotechnology Index is designed to track the performance of a set of securities listed on The NASDAQ Stock Market® (NASDAQ®) that are classified as either biotechnology or pharmaceutical according to the Industry Classification Benchmark (ICB). The NASDAQ Biotechnology Index is calculated under a modified capitalization-weighted methodology and ranked on annual basis. All securities in the NASDAQ Biotechnology Index are listed on the NASDAQ Global Market or the NASDAQ Global Select Market, and meet minimum market value and share volume requirements among other criteria.
The NASDAQ Biotechnology Index is the basis for the iShares NASDAQ Biotechnology Index(SM) Fund. In addition, options based on the iShares NASDAQ Biotechnology Index Fund trade on various exchanges. For more information about the NASDAQ Biotechnology Index visit www.nasdaq.com.
About Tetraphase Pharmaceuticals, Inc.
Tetraphase is a clinical-stage biopharmaceutical company using its proprietary chemistry technology to create novel antibiotics for serious and life-threatening bacterial infections, including those caused by many of the multidrug-resistant (MDR) bacteria highlighted as urgent public health threats by the CDC. Tetraphase has created more than 3,000 novel tetracycline analogs using its proprietary technology platform. Tetraphase's pipeline includes three antibiotic clinical candidates: eravacycline, which is in phase 3 clinical trials, and TP-271 and TP-6076, which are in phase 1 clinical trials. Please visit www.tphase.com for more company information.
Investor Contacts:
Argot Partners
Maeve Conneighton
206-899-4940
[email protected]
Media Contact:
Sam Brown Inc.
Mike Beyer
312-961-2502
[email protected]


Global PC Makers Eye Chinese Memory Chip Suppliers Amid Ongoing Supply Crunch
TrumpRx Website Launches to Offer Discounted Prescription Drugs for Cash-Paying Americans
Toyota’s Surprise CEO Change Signals Strategic Shift Amid Global Auto Turmoil
AMD Shares Slide Despite Earnings Beat as Cautious Revenue Outlook Weighs on Stock
Nintendo Shares Slide After Earnings Miss Raises Switch 2 Margin Concerns
Nvidia Nears $20 Billion OpenAI Investment as AI Funding Race Intensifies
SpaceX Pushes for Early Stock Index Inclusion Ahead of Potential Record-Breaking IPO
CK Hutchison Launches Arbitration After Panama Court Revokes Canal Port Licences
Rio Tinto Shares Hit Record High After Ending Glencore Merger Talks
Anthropic Eyes $350 Billion Valuation as AI Funding and Share Sale Accelerate
Australian Scandium Project Backed by Richard Friedland Poised to Support U.S. Critical Minerals Stockpile
Alphabet’s Massive AI Spending Surge Signals Confidence in Google’s Growth Engine
Nvidia CEO Jensen Huang Says AI Investment Boom Is Just Beginning as NVDA Shares Surge
Instagram Outage Disrupts Thousands of U.S. Users
Nvidia, ByteDance, and the U.S.-China AI Chip Standoff Over H200 Exports
FDA Targets Hims & Hers Over $49 Weight-Loss Pill, Raising Legal and Safety Concerns
Baidu Approves $5 Billion Share Buyback and Plans First-Ever Dividend in 2026 



