dividends and distributions we pay regular quarterly dividends to holders of our common stock . on february 16 , 2007 , our board of directors declared the first quarterly installment of our 2007 dividend in the amount of $ 0.475 per share , payable on march 30 , 2007 to stockholders of record on march 20 , 2007 . we expect to distribute 100% ( 100 % ) or more of our taxable net income to our stockholders for 2007 . our board of directors normally makes decisions regarding the frequency and amount of our dividends on a quarterly basis . because the board considers a number of factors when making these decisions , we cannot assure you that we will maintain the policy stated above . please see 201ccautionary statements 201d and the risk factors included in part i , item 1a of this annual report on form 10-k for a description of other factors that may affect our distribution policy . our stockholders may reinvest all or a portion of any cash distribution on their shares of our common stock by participating in our distribution reinvestment and stock purchase plan , subject to the terms of the plan . see 201cnote 15 2014capital stock 201d of the notes to consolidated financial statements included in item 8 of this annual report on form 10-k . director and employee stock sales certain of our directors , executive officers and other employees have adopted and may , from time to time in the future , adopt non-discretionary , written trading plans that comply with rule 10b5-1 under the exchange act , or otherwise monetize their equity-based compensation . securities authorized for issuance under equity compensation plans the following table summarizes information with respect to our equity compensation plans as of december 31 , 2006 : plan category number of securities to be issued upon exercise of outstanding options , warrants and rights weighted average exercise price of outstanding options , warrants and rights number of securities remaining available for future issuance under equity compensation plans ( excluding securities reflected in column ( a ) equity compensation plans approved by stockholders ( 1 ) . . 1118051 $ 24.27 8373727 equity compensation plans not approved by stockholders ( 2 ) . . 18924 n/a 1145354 .
what is the percentage of number of securities to be issued upon exercise of outstanding options warrants and rights compared to number of securities remaining available for future issuance under equity compensation plans?
( 1 ) these plans consist of ( i ) the 1987 incentive compensation program ( employee plan ) ; ( ii ) the theratx , incorporated 1996 stock option/stock issuance plan ; ( iii ) the 2000 incentive compensation plan ( employee plan ) ( formerly known as the 1997 incentive compensation plan ) ; ( iv ) the 2004 stock plan for directors ( which amended and restated the 2000 stock option plan for directors ( formerly known as the 1997 stock option plan for non-employee directors ) ) ; ( v ) the employee and director stock purchase plan ; ( vi ) the 2006 incentive plan ; and ( vii ) the 2006 stock plan for directors . ( 2 ) these plans consist of ( i ) the common stock purchase plan for directors , under which our non-employee directors may receive common stock in lieu of directors 2019 fees , ( ii ) the nonemployee director deferred stock compensation plan , under which our non-employee directors may receive units convertible on a one-for-one basis into common stock in lieu of director fees , and ( iii ) the executive deferred stock compensation plan , under which our executive officers may receive units convertible on a one-for-one basis into common stock in lieu of compensation. .