risks related to our common stock our stock price is extremely volatile . the trading price of our common stock has been extremely volatile and may continue to be volatile in the future . many factors could have an impact on our stock price , including fluctuations in our or our competitors 2019 operating results , clinical trial results or adverse events associated with our products , product development by us or our competitors , changes in laws , including healthcare , tax or intellectual property laws , intellectual property developments , changes in reimbursement or drug pricing , the existence or outcome of litigation or government proceedings , including the sec/doj investigation , failure to resolve , delays in resolving or other developments with respect to the issues raised in the warning letter , acquisitions or other strategic transactions , and the perceptions of our investors that we are not performing or meeting expectations . the trading price of the common stock of many biopharmaceutical companies , including ours , has experienced extreme price and volume fluctuations , which have at times been unrelated to the operating performance of the companies whose stocks were affected . anti-takeover provisions in our charter and bylaws and under delaware law could make a third-party acquisition of us difficult and may frustrate any attempt to remove or replace our current management . our corporate charter and by-law provisions may discourage certain types of transactions involving an actual or potential change of control that might be beneficial to us or our stockholders . our bylaws provide that special meetings of our stockholders may be called only by the chairman of the board , the president , the secretary , or a majority of the board of directors , or upon the written request of stockholders who together own of record 25% ( 25 % ) of the outstanding stock of all classes entitled to vote at such meeting . our bylaws also specify that the authorized number of directors may be changed only by resolution of the board of directors . our charter does not include a provision for cumulative voting for directors , which may have enabled a minority stockholder holding a sufficient percentage of a class of shares to elect one or more directors . under our charter , our board of directors has the authority , without further action by stockholders , to designate up to 5 shares of preferred stock in one or more series . the rights of the holders of common stock will be subject to , and may be adversely affected by , the rights of the holders of any class or series of preferred stock that may be issued in the future . because we are a delaware corporation , the anti-takeover provisions of delaware law could make it more difficult for a third party to acquire control of us , even if the change in control would be beneficial to stockholders . we are subject to the provisions of section 203 of the delaware general laws , which prohibits a person who owns in excess of 15% ( 15 % ) of our outstanding voting stock from merging or combining with us for a period of three years after the date of the transaction in which the person acquired in excess of 15% ( 15 % ) of our outstanding voting stock , unless the merger or combination is approved in a prescribed manner . item 1b . unresolved staff comments . item 2 . properties . we conduct our primary operations at the owned and leased facilities described below . location operations conducted approximate square feet expiration new haven , connecticut corporate headquarters and executive , sales , research and development offices 514000 2030 dublin , ireland global supply chain , distribution , and administration offices 160000 owned .

Table: location operations conducted approximatesquare feet leaseexpirationdates new haven connecticut corporate headquarters and executive sales research and development offices 514000 2030 dublin ireland global supply chain distribution and administration offices 160000 owned athlone ireland commercial research and development manufacturing 80000 owned lexington massachusetts research and development offices 81000 2019 bogart georgia commercial research and development manufacturing 70000 owned smithfield rhode island commercial research and development manufacturing 67000 owned zurich switzerland regional executive and sales offices 69000 2025

we believe that our administrative office space is adequate to meet our needs for the foreseeable future . we also believe that our research and development facilities and our manufacturing facilities , together with third party manufacturing facilities , will be adequate for our on-going activities . in addition to the locations above , we also lease space in other u.s . locations and in foreign countries to support our operations as a global organization. .

Question: how many square feet are leased by the company?
Answer: 664000
Calculation: add(add(514000, 81000), 69000)