6. Stock Options and warrants (Tables)
|
9 Months Ended |
Sep. 30, 2012
|
Notes to Financial Statements |
|
Stock option activity |
Stock option activity for
the period January 1, 2012 to September 30, 2012, was as follows:
Options |
|
Shares |
|
|
Weighted-
Average
Exercise Price
|
|
|
Weighted-
Average
Remaining Contractual
Term
|
|
|
Aggregate
Intrinsic
Value
|
|
Outstanding at January 1,
2012 |
|
|
24,067,892 |
|
|
$ |
0.30 |
|
|
|
|
|
|
|
|
|
Granted |
|
|
4,850,000 |
|
|
|
0.26 |
|
|
|
|
|
|
|
|
|
Exercised |
|
|
(58,334 |
) |
|
|
0.27 |
|
|
|
|
|
|
|
|
|
Forfeited or expired |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Outstanding at
September 30, 2012 |
|
|
28,859,558 |
|
|
$ |
0.30 |
|
|
|
8.1 |
|
|
$ |
13,980,449 |
|
Vested and exercisable
at September 30, 2012 |
|
|
11,279,558 |
|
|
$ |
0.37 |
|
|
|
7.3 |
|
|
$ |
4,838,849 |
|
|
|
Outstanding Options |
|
Exercisable Options |
Option Exercise
Price Per Share |
|
Shares |
|
Life (Years) |
|
Weighted Average
Exercise Price |
|
Shares |
|
Weighted
Average Exercise Price |
|
$ 0.21 - $ 0.99 |
|
|
|
28,532,012 |
|
|
|
8.1 |
|
|
$ |
.28 |
|
|
|
10,952,012 |
|
|
$ |
0.34 |
|
|
$ 1.00 - $ 1.99 |
|
|
|
327,546 |
|
|
|
2.6 |
|
|
|
1.25 |
|
|
|
327,546 |
|
|
|
1.25 |
|
|
|
|
|
|
28,859,558 |
|
|
|
8.1 |
|
|
$ |
0.30 |
|
|
|
11,279,558 |
|
|
$ |
0.37 |
|
|
Black-Scholes-Merton pricing model with the following average assumptions |
During the nine months ended September 30, 2012 and 2011, the Company
valued options at the grant date using the Black-Scholes-Merton pricing model with the following average assumptions:
|
|
September 30, |
|
|
|
2012 |
|
2011 |
|
|
|
|
|
|
|
Expected life (years) |
|
5.0 7.0 |
|
6 |
|
Risk free interest rate |
|
.75% - 1.27% |
|
1.95% |
|
Volatility |
|
125%-132% |
|
135.00% |
|
Expected dividend yield |
|
0.00% |
|
|
|
|
Stock purchase warrants |
The
following table summarizes certain information about the Companys stock purchase warrants from January 1, 2012 to September
30, 2012:
Warrants |
|
Shares |
|
|
Weighted- Average
Exercise Price |
|
|
Weighted- Average
Remaining Contractual Term |
|
|
Aggregate Intrinsic
Value |
|
Outstanding at January 1, 2012 |
|
|
49,106,280 |
|
|
$ |
0.28 |
|
|
|
|
|
|
|
|
|
Granted |
|
|
9,255,716 |
|
|
|
0.31 |
|
|
|
|
|
|
|
|
|
Exercised |
|
|
(6,347,393 |
) |
|
|
0.35 |
|
|
|
|
|
|
|
|
|
Forfeited or expired |
|
|
(4,062,910 |
) |
|
|
0.49 |
|
|
|
|
|
|
|
|
|
Outstanding at September 30, 2012 |
|
|
47,951,693 |
|
|
$ |
0.31 |
|
|
|
1.5 |
|
|
$ |
22,351,154 |
|
Vested and exercisable at
September 30, 2012 |
|
|
46,585,026 |
|
|
$ |
0.31 |
|
|
|
1.1 |
|
|
$ |
21,708,821 |
|
|
|
Outstanding Warrants |
|
Exercisable Warrants |
Warrant Exercise
Price Per Share |
|
Shares |
|
Life (Years) |
|
Weighted Average
Exercise Price |
|
Shares |
|
Weighted
Average Exercise Price |
|
$ 0.25 - $ 0.99 |
|
|
|
47,451,693 |
|
|
|
1.5 |
|
|
$ |
.30 |
|
|
|
46,085,026 |
|
|
$ |
.30 |
|
|
$ 1.00 - $ 1.99 |
|
|
|
500,000 |
|
|
|
1.8 |
|
|
|
1.00 |
|
|
|
500,000 |
|
|
|
1.00 |
|
|
|
|
|
|
47,951,693 |
|
|
|
1.5 |
|
|
$ |
0.31 |
|
|
|
46,585,026 |
|
|
$ |
0.31 |
|
|