Insider Trading activities of Ariba Inc insiders.

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Ariba Inc since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Ariba Inc since year 2005. Table 2 shows the detailed insider transactions of Ariba Inc since 2005. The reporting company's ticker symbol is ARBA. The reporting company's CIK number is 1084755.
The total value of stock buying since 2005 is $884,443.
The total value of stock sales since 2005 is $2,251,739,962.
The total value of stock option exercises since 2005 is $2,477,105.


Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Ariba Inc (ARBA).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2012-03 0 $0 1,666 $53,928 1,666 $47,880
2012-02 0 $0 58,494 $1,798,213 0 $0
2011-12 0 $0 117,016 $3,919,360 67,016 $857,511
2011-11 0 $0 515,918 $16,616,742 0 $0
2011-09 0 $0 15,000 $416,445 15,000 $228,600
2011-08 0 $0 20,866 $470,027 0 $0
2011-05 0 $0 63,033 $2,151,834 30,833 $370,920
2011-03 0 $0 44,204 $1,410,530 0 $0
2011-02 25,000 $696,500 291,143 $8,384,327 12,500 $157,250
2011-01 338 $8,071 0 $0 0 $0
2010-12 5,000 $107,460 283,826 $6,606,636 0 $0
2010-11 0 $0 125,219 $2,519,358 0 $0
2010-05 0 $0 13,000 $182,611 0 $0
2010-03 200 $2,412 127,554 $1,672,757 0 $0
2010-02 0 $0 56,553 $689,946 0 $0
2009-12 0 $0 204,729 $2,334,902 0 $0
2009-11 0 $0 252,765 $2,175,133,278 0 $0
2009-08 0 $0 145,651 $1,720,166 0 $0
2009-06 0 $0 252,230 $2,564,732 25,000 $145,750
2009-05 0 $0 166,800 $1,747,001 0 $0
2008-11 10,000 $70,000 0 $0 0 $0
2008-08 0 $0 187,584 $3,356,370 17,109 $126,435
2008-07 0 $0 25,433 $430,306 0 $0
2008-06 0 $0 17,000 $272,000 17,000 $125,630
2008-05 0 $0 113,902 $1,535,853 17,000 $125,630
2008-04 0 $0 189,815 $2,152,732 0 $0
2008-03 0 $0 59,583 $595,969 0 $0
2008-02 0 $0 121,456 $1,138,184 0 $0
2008-01 0 $0 76,260 $729,903 0 $0
2007-12 0 $0 9,681 $121,012 0 $0
2007-10 0 $0 43,064 $533,468 0 $0
2007-08 0 $0 133,172 $1,195,284 0 $0
2007-07 0 $0 11,667 $97,652 0 $0
2007-05 0 $0 18,334 $169,614 0 $0
2007-03 0 $0 9,681 $88,581 0 $0
2007-02 0 $0 241,085 $2,471,909 0 $0
2007-01 0 $0 207,998 $1,901,115 0 $0
2006-12 0 $0 8,473 $64,648 8,473 $49,397
2006-11 0 $0 18,652 $142,654 11,527 $67,202
2006-10 0 $0 36,473 $272,864 0 $0
2006-08 0 $0 130,949 $1,010,655 25,000 $145,750
2006-07 0 $0 11,968 $93,542 0 $0
2006-05 0 $0 23,951 $196,769 0 $0
2006-02 0 $0 1,333 $13,996 0 $0
2006-01 0 $0 87,503 $826,047 5,000 $29,150
2005-11 0 $0 235,258 $1,936,042 0 $0

Table 2. Detailed insider stock purchases, sales, and option exercises of Ariba Inc insiders (ARBA)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2012-03-14 Knowling Robert E Jr (Director) Sale 1,666 32.37 53,928
2012-03-14 Knowling Robert E Jr (Director) Option Ex 1,666 28.74 47,880
2012-02-29 Wallman Richard F (Director) Sale 5,000 31.65 158,250
2012-02-28 Johnson Robert D (Director) Sale 1,419 31.51 44,715
2012-02-27 Parker Kent (Chief Operating Officer) Sale 33,800 31.01 1,048,138
2012-02-24 Parker Kent (Chief Operating Officer) Sale 3,061 30.70 93,972
2012-02-24 Wallman Richard F (Director) Sale 8,306 30.50 253,333
2012-02-03 Kashnow Richard A (Director) Sale 5,627 29.05 163,464
2012-02-01 Johnson Robert D (Director) Sale 1,281 28.37 36,341
2011-12-12 Monahan Thomas (Director) Sale 12,500 34.09 426,175
2011-12-12 Monahan Thomas (Director) Option Ex 12,500 16.44 205,500
2011-12-09 Parker Kent (Chief Operating Officer) Sale 10,000 34.20 342,000
2011-12-06 Newkirk Karl E (Director) Sale 54,516 33.57 1,830,265
2011-12-06 Newkirk Karl E (Director) Option Ex 54,516 11.96 652,011
2011-12-05 Parker Kent (Chief Operating Officer) Sale 40,000 33.02 1,320,920
2011-11-16 Rubaie Ahmed (Chief Financial Officer) Sale 80,879 31.95 2,584,326
2011-11-16 Parker Kent (Chief Operating Officer) Sale 4,451 32.02 142,507
2011-11-16 Costello Kevin (President) Sale 18,035 32.08 578,526
2011-11-16 Calderoni Robert (Chairman and CEO) Sale 17,553 32.09 563,223
2011-11-15 Costello Kevin (President) Sale 120,000 32.28 3,873,360
2011-11-15 Calderoni Robert (Chairman and CEO) Sale 275,000 32.27 8,874,800
2011-09-13 Wallman Richard F (Director) Sale 15,000 27.76 416,445
2011-09-13 Wallman Richard F (Director) Option Ex 15,000 15.24 228,600
2011-08-22 Rubaie Ahmed (Chief Financial Officer) Sale 20,866 22.53 470,027
2011-05-10 Parker Kent (Chief Operating Officer) Sale 20,000 35.00 700,000
2011-05-10 Johnson Robert D (Director) Sale 7,200 35.50 255,571
2011-05-06 Knowling Robert E Jr (Director) Sale 30,833 33.52 1,033,398
2011-05-06 Knowling Robert E Jr (Director) Option Ex 30,833 12.03 370,920
2011-05-05 Kashnow Richard A (Director) Sale 5,000 32.57 162,865
2011-03-08 Monahan Thomas (Director) Sale 5,000 31.50 157,500
2011-03-07 Parker Kent (Chief Operating Officer) Sale 14,204 32.50 461,630
2011-03-07 Kashnow Richard A (Director) Sale 5,000 31.66 158,300
2011-03-03 Parker Kent (Chief Operating Officer) Sale 20,000 31.66 633,100
2011-02-11 Costello Kevin (President) Sale 75,000 30.08 2,256,000
2011-02-07 Parker Kent (Chief Operating Officer) Sale 15,000 30.00 450,000
2011-02-04 Calderoni Robert (Chairman and CEO) Sale 52,824 28.91 1,527,353
2011-02-03 Johnson Robert D (Director) Sale 21,143 28.46 601,645
2011-02-03 Johnson Robert D (Director) Option Ex 12,500 12.58 157,250
2011-02-03 Calderoni Robert (Chairman and CEO) Sale 5,300 28.91 153,233
2011-02-02 Calderoni Robert (Chairman and CEO) Sale 1,876 28.90 54,216
2011-02-01 Wallman Richard F (Director) Buy 15,000 27.86 417,900
2011-02-01 Calderoni Robert (Chairman and CEO) Sale 120,000 27.85 3,341,880
2011-01-31 Costello Kevin (President) Buy 338 23.88 8,071
2010-12-15 Parker Kent (Chief Operating Officer) Sale 5,999 23.58 141,480
2010-12-15 Costello Kevin (President) Sale 19,827 23.35 462,980
2010-12-13 Costello Kevin (President) Sale 13,000 23.81 309,491
2010-12-10 Costello Kevin (President) Sale 30,000 23.79 713,580
2010-12-10 Calderoni Robert (Chairman and CEO) Sale 75,000 23.75 1,781,325
2010-12-08 Costello Kevin (President) Sale 20,000 23.00 460,080
2010-12-08 Calderoni Robert (Chairman and CEO) Sale 100,000 22.98 2,297,700
2010-12-06 Parker Kent (Chief Operating Officer) Sale 20,000 22.00 440,000
2010-12-06 Wallman Richard F (Director) Buy 5,000 21.49 107,460
2010-11-26 Johnson Robert D (Director) Sale 12,500 20.66 258,225
2010-11-24 Monahan Thomas (Director) Sale 16,324 20.85 340,355
2010-11-24 Costello Kevin (President) Sale 18,000 20.49 368,784
2010-11-23 Rubaie Ahmed (Chief Financial Officer) Sale 68,395 19.80 1,354,494
2010-11-22 Rubaie Ahmed (Chief Financial Officer) Sale 10,000 19.75 197,500
2010-05-04 Calderoni Robert (Chairman and CEO) Sale 13,000 14.05 182,611
2010-03-16 Kashnow Richard A (Director) Sale 12,338 12.99 160,270
2010-03-12 Monahan Thomas (Director) Sale 20,000 13.41 268,200
2010-03-12 Knowling Robert E Jr (Director) Sale 12,338 13.45 165,946
2010-03-09 Calderoni Robert (Chairman and CEO) Sale 18,553 13.05 242,116
2010-03-08 Parker Kent (Chief Operating Officer) Sale 37,449 13.00 486,837
2010-03-08 Calderoni Robert (Chairman and CEO) Sale 25,000 13.00 325,000
2010-03-05 Parker Kent (Chief Operating Officer) Sale 1,876 13.00 24,388
2010-03-01 Wallman Richard F (Director) Buy 200 12.06 2,412
2010-02-02 Calderoni Robert (Chairman and CEO) Sale 56,553 12.20 689,946
2009-12-24 Parker Kent (Chief Operating Officer) Sale 13,749 12.50 171,862
2009-12-23 Parker Kent (Chief Operating Officer) Sale 25,005 12.00 300,060
2009-12-23 Costello Kevin (President) Sale 53,625 12.00 643,500
2009-12-18 Parker Kent (Chief Operating Officer) Sale 13,749 11.50 158,113
2009-12-15 Parker Kent (Chief Operating Officer) Sale 25,005 11.00 275,055
2009-12-11 Costello Kevin (President) Sale 54,995 10.69 587,896
2009-12-09 Parker Kent (Chief Operating Officer) Sale 18,601 10.67 198,416
2009-11-23 Parker Kent (Chief Operating Officer) Sale 10,455 11.10 116,050
2009-11-23 Costello Kevin (President) Sale 2,551 11.35 28,946
2009-11-23 Calderoni Robert (Chairman and CEO) Sale 117,089 18,563.05 2,173,529,195
2009-11-16 Rubaie Ahmed (Chief Financial Officer) Sale 31,516 11.89 374,630
2009-11-16 Costello Kevin (President) Sale 4,573 11.84 54,144
2009-11-16 Calderoni Robert (Chairman and CEO) Sale 86,581 11.90 1,030,313
2009-08-31 Knowling Robert E Jr (Director) Sale 10,843 11.40 123,610
2009-08-21 Rubaie Ahmed (Chief Financial Officer) Sale 19,847 11.92 236,536
2009-08-12 Parker Kent (Chief Operating Officer) Sale 19,414 12.00 232,968
2009-08-12 Costello Kevin (President) Sale 26,035 12.00 312,420
2009-08-12 Calderoni Robert (Chairman and CEO) Sale 50,000 12.00 600,000
2009-08-10 Parker Kent (Chief Operating Officer) Sale 8,669 11.00 95,359
2009-08-10 Wallman Richard F (Director) Sale 10,843 11.00 119,273
2009-06-15 Johnson Robert D (Director) Sale 25,000 10.02 250,575
2009-06-15 Johnson Robert D (Director) Option Ex 25,000 5.83 145,750
2009-06-11 Calderoni Robert (Chairman and CEO) Sale 25,000 10.53 263,250
2009-06-10 Calderoni Robert (Chairman and CEO) Sale 25,000 10.57 264,275
2009-06-05 Parker Kent (Chief Operating Officer) Sale 10,830 10.50 113,715
2009-06-03 Costello Kevin (President) Sale 21,400 10.02 214,342
2009-06-02 Costello Kevin (President) Sale 30,000 10.04 301,260
2009-06-02 Calderoni Robert (Chairman and CEO) Sale 100,000 10.07 1,007,000
2009-06-01 Costello Kevin (President) Sale 15,000 10.02 150,315
2009-05-08 Calderoni Robert (Chairman and CEO) Sale 40,000 10.58 423,200
2009-05-07 Costello Kevin (President) Sale 8,500 10.49 89,165
2009-05-07 Calderoni Robert (Chairman and CEO) Sale 60,000 10.46 627,420
2009-05-06 Parker Kent (Chief Operating Officer) Sale 3,300 10.52 34,716
2009-05-06 Costello Kevin (President) Sale 5,000 10.50 52,500
2009-05-05 Costello Kevin (President) Sale 50,000 10.40 520,000
2008-11-19 Monahan Thomas (Director) Buy 10,000 7.00 70,000
2008-08-13 Costello Kevin (President) Sale 31,909 20.05 639,743
2008-08-13 Calderoni Robert (Chairman and CEO) Sale 13,474 17.29 232,925
2008-08-12 Parker Kent (Chief Commecial Officer) Sale 13,411 17.48 234,477
2008-08-12 Calderoni Robert (Chairman and CEO) Sale 102,000 17.40 1,774,799
2008-08-08 Johnson Robert D (Director) Sale 9,681 17.20 166,464
2008-08-05 Parker Kent (Chief Commecial Officer) Sale 17,109 18.00 307,962
2008-08-05 Parker Kent (Chief Commecial Officer) Option Ex 17,109 7.39 126,435
2008-07-29 Knowling Robert E Jr (Director) Sale 10,800 17.00 183,600
2008-07-29 Wallman Richard F (Director) Sale 10,800 17.00 183,600
2008-07-28 Parker Kent (Chief Commecial Officer) Sale 3,833 16.46 63,106
2008-06-18 Parker Kent (Chief Commecial Officer) Sale 17,000 16.00 272,000
2008-06-18 Parker Kent (Chief Commecial Officer) Option Ex 17,000 7.39 125,630
2008-05-29 Frankola James (Chief Financial Officer) Sale 26,593 14.85 394,906
2008-05-19 Parker Kent (Chief Commecial Officer) Sale 25,184 13.70 344,995
2008-05-19 Parker Kent (Chief Commecial Officer) Option Ex 17,000 7.39 125,630
2008-05-19 Frankola James (Chief Financial Officer) Sale 10,000 13.35 133,500
2008-05-15 Frankola James (Chief Financial Officer) Sale 10,000 13.30 133,000
2008-05-13 Frankola James (Chief Financial Officer) Sale 31,125 12.70 395,131
2008-05-12 Frankola James (Chief Financial Officer) Sale 11,000 12.21 134,321
2008-04-30 Parker Kent (Chief Commecial Officer) Sale 5,249 11.84 62,158
2008-04-30 Frankola James (Chief Financial Officer) Sale 7,307 11.84 86,529
2008-04-30 Costello Kevin (President) Sale 1,709 11.54 19,721
2008-04-30 Calderoni Robert (Chairman and CEO) Sale 11,007 11.85 130,443
2008-04-29 Parker Kent (Chief Commecial Officer) Sale 5,000 11.43 57,165
2008-04-29 Frankola James (Chief Financial Officer) Sale 12,666 11.39 144,227
2008-04-29 Costello Kevin (President) Sale 35,000 11.18 391,300
2008-04-29 Calderoni Robert (Chairman and CEO) Sale 111,877 11.27 1,261,189
2008-03-27 Costello Kevin (President) Sale 8,666 9.77 84,684
2008-03-26 Calderoni Robert (Chairman and CEO) Sale 184 10.05 1,849
2008-03-25 Calderoni Robert (Chairman and CEO) Sale 21,742 10.05 218,594
2008-03-24 Parker Kent (Chief Commecial Officer) Sale 10,333 10.00 103,330
2008-03-24 Frankola James (Chief Financial Officer) Sale 8,000 10.05 80,400
2008-03-24 Calderoni Robert (Chairman and CEO) Sale 10,658 10.05 107,112
2008-02-21 Costello Kevin (President) Sale 7,841 9.43 73,956
2008-02-19 Parker Kent (Chief Commecial Officer) Sale 4,169 9.36 39,021
2008-02-19 Frankola James (Chief Financial Officer) Sale 3,131 9.37 29,324
2008-02-19 Calderoni Robert (Chairman and CEO) Sale 23,324 9.36 218,312
2008-02-15 Parker Kent (Chief Commecial Officer) Sale 5,000 9.36 46,785
2008-02-15 Calderoni Robert (Chairman and CEO) Sale 75,000 9.34 700,875
2008-02-01 Parker Kent (Chief Commecial Officer) Sale 2,952 10.00 29,520
2008-02-01 Calderoni Robert (Chairman and CEO) Sale 39 10.05 391
2008-01-31 Parker Kent (EVP, Global Services) Sale 7,073 9.75 68,961
2008-01-31 Calderoni Robert (Chairman and CEO) Sale 56,238 9.48 533,136
2008-01-29 Costello Kevin (Chief Commerical Officer) Sale 12,949 9.87 127,806
2007-12-03 Wallman Richard F (Director) Sale 9,681 12.50 121,012
2007-10-30 Stansbury Henry Tayloe (EVP, Products and Operations) Sale 12,850 12.03 154,585
2007-10-30 Costello Kevin (Chief Commerical Officer) Sale 30,214 12.54 378,883
2007-08-22 Calderoni Robert (Chairman and CEO) Sale 65,000 9.13 593,580
2007-08-17 Parker Kent (EVP, Global Services) Sale 15,641 9.00 140,769
2007-08-13 Stansbury Henry Tayloe (EVP, Products and Operations) Sale 15,082 8.79 132,600
2007-08-13 Costello Kevin (Chief Commerical Officer) Sale 31,026 8.80 273,028
2007-08-10 Parker Kent (EVP, Global Services) Sale 1,424 9.00 12,816
2007-08-01 Parker Kent (EVP, Global Services) Sale 4,999 8.50 42,491
2007-07-31 Parker Kent (EVP, Global Services) Sale 3,334 8.37 27,905
2007-07-31 Stansbury Henry Tayloe (EVP, Products and Operations) Sale 8,333 8.37 69,747
2007-05-25 Parker Kent (EVP, Global Services) Sale 8,455 9.03 76,357
2007-05-23 Parker Kent (EVP, Global Services) Sale 3,212 9.44 30,321
2007-05-23 Stansbury Henry Tayloe (EVP, Products and Operations) Sale 6,667 9.44 62,936
2007-03-16 Kashnow Richard A (Director) Sale 9,681 9.15 88,581
2007-02-28 Frankola James (Chief Financial Officer) Sale 2,000 9.20 18,400
2007-02-26 Frankola James (Chief Financial Officer) Sale 2,000 9.83 19,660
2007-02-22 Frankola James (Chief Financial Officer) Sale 2,418 10.02 24,228
2007-02-16 Parker Kent (EVP, Global Services) Sale 19,531 10.38 202,653
2007-02-16 Stansbury Henry Tayloe (EVP, Products and Operations) Sale 17,914 10.34 185,159
2007-02-16 Frankola James (Chief Financial Officer) Sale 15,000 10.53 157,995
2007-02-16 Costello Kevin (Chief Commerical Officer) Sale 24,553 10.85 266,449
2007-02-16 Calderoni Robert (Chairman and CEO) Sale 90,669 10.43 946,040
2007-02-14 Frankola James (Chief Financial Officer) Sale 10,000 10.27 102,700
2007-02-02 Costello Kevin (Chief Commerical Officer) Sale 47,000 9.62 452,375
2007-02-01 Frankola James (Chief Financial Officer) Sale 10,000 9.62 96,250
2007-01-30 Stansbury Henry Tayloe (EVP, Products and Operations) Sale 798 9.09 7,253
2007-01-30 Frankola James (Chief Financial Officer) Sale 8,104 9.10 73,786
2007-01-30 Calderoni Robert (Chairman and CEO) Sale 15,311 9.12 139,636
2007-01-29 Parker Kent (EVP, Global Services) Sale 18,800 9.17 172,414
2007-01-29 Frankola James (Chief Financial Officer) Sale 48,452 9.12 441,638
2007-01-29 Costello Kevin (Chief Commerical Officer) Sale 52,570 9.16 481,646
2006-12-05 Wallman Richard F (Director) Sale 8,473 7.63 64,648
2006-12-05 Wallman Richard F (Director) Option Ex 8,473 5.83 49,397
2006-11-08 Wallman Richard F (Director) Sale 11,527 7.74 89,207
2006-11-08 Wallman Richard F (Director) Option Ex 11,527 5.83 67,202
2006-11-06 Frankola James (Chief Financial Officer) Sale 5,000 7.47 37,340
2006-11-01 Frankola James (Chief Financial Officer) Sale 2,125 7.58 16,107
2006-10-31 Parker Kent (EVP, Global Services) Sale 2,292 7.49 17,167
2006-10-31 Stansbury Henry Tayloe (EVP, Products and Operations) Sale 12,850 7.45 95,745
2006-10-31 Costello Kevin (Chief Commerical Officer) Sale 5,663 7.61 43,101
2006-10-31 Calderoni Robert (Chairman and CEO) Sale 15,668 7.46 116,851
2006-08-29 Knowling Robert E Jr (Director) Sale 25,000 8.00 200,000
2006-08-29 Knowling Robert E Jr (Director) Option Ex 25,000 5.83 145,750
2006-08-23 Frankola James (Chief Financial Officer) Sale 3,000 8.03 24,089
2006-08-21 Frankola James (Chief Financial Officer) Sale 2,592 8.37 21,695
2006-08-15 Parker Kent (EVP, Global Services) Sale 26,798 7.85 210,417
2006-08-15 Calderoni Robert (Chairman and CEO) Sale 20,000 8.00 160,000
2006-08-14 Parker Kent (EVP, Global Services) Sale 3,041 7.43 22,597
2006-08-14 Stansbury Henry Tayloe (EVP, Products and Operations) Sale 15,082 7.43 112,044
2006-08-14 Frankola James (Chief Financial Officer) Sale 1 7.13 7
2006-08-14 Costello Kevin (Chief Commerical Officer) Sale 8,837 7.12 62,919
2006-08-14 Calderoni Robert (Chairman and CEO) Sale 21,716 7.36 159,916
2006-08-07 Costello Kevin (Chief Commerical Officer) Sale 4,882 7.57 36,971
2006-07-31 Parker Kent (EVP, Global Services) Sale 3,634 7.83 28,454
2006-07-31 Stansbury Henry Tayloe (EVP, Products and Operations) Sale 8,334 7.81 65,088
2006-05-19 Parker Kent (EVP, Global Services) Sale 3,502 8.18 28,663
2006-05-19 Stansbury Henry Tayloe (EVP, Products and Operations) Sale 13,334 8.20 109,338
2006-05-05 Stansbury Henry Tayloe (EVP, Products and Operations) Sale 448 9.15 4,099
2006-02-24 Parker Kent (EVP, Global Services) Sale 1,333 10.50 13,996
2006-01-30 Stansbury Henry Tayloe (EVP, Products and Op) Sale 1,389 9.36 13,001
2006-01-30 Frankola James (Chief Financial Officer) Sale 26,101 9.52 248,481
2006-01-27 Calderoni Robert (Chairman and CEO) Sale 32,880 9.33 306,770
2006-01-26 Wallman Richard F (Director) Sale 5,133 9.53 48,927
2006-01-26 Wallman Richard F (Director) Option Ex 5,000 5.83 29,150
2006-01-26 Costello Kevin (Chief Commerical Officer) Sale 22,000 9.49 208,868
2005-11-23 Stansbury Henry Tayloe (EVP, Products and Op) Sale 2,686 8.71 23,392
2005-11-22 Frankola James (Chief Financial Officer) Sale 24,562 8.76 215,089
2005-11-11 Parker Kent (EVP, Global Services) Sale 11,692 8.20 95,874
2005-11-04 Calderoni Robert (Chairman and CEO) Sale 130,000 8.26 1,074,450
2005-11-03 Stansbury Henry Tayloe (EVP, Products and Op) Sale 15,527 8.07 125,318
2005-11-01 Stansbury Henry Tayloe (EVP, Products and Op) Sale 791 7.80 6,169
2005-11-01 Costello Kevin (Chief Commerical Officer) Sale 50,000 7.92 395,750

Insider trading activities including stock purchases, stock sales, and option exercises of ARBA listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Ariba Inc (symbol ARBA, CIK number 1084755) see the Securities and Exchange Commission (SEC) website.