| 2018-11-02 | International Business Machines Corporation IBM | Chairman, Pres. and CEO | 17,000 0.0019% | $117.51 | $2M | +22.25% | ||
| 2016-02-05 | Sale | International Business Machines Corporation IBM | Executive Chairman | 18,586 0.0019% | $126.10 | $2.34M | +23.46% | |
| 2015-04-29 | Sale | International Business Machines Corporation IBM | Executive Chairman | 18,220 0.0018% | $173.30 | $3.16M | -13.99% | |
| 2014-08-27 | Sale | International Business Machines Corporation IBM | Executive Chairman | 21,337 0.0021% | $191.80 | $4.09M | -14.47% | |
| 2013-02-19 | Sale | International Business Machines Corporation IBM | Executive Chairman | 12,500 0.0011% | $200.60 | $2.51M | -4.27% | |
| 2013-01-29 | Sale | International Business Machines Corporation IBM | Executive Chairman | 23,311 0.0021% | $204.73 | $4.77M | -4.92% | |
| 2011-10-31 | Sale | International Business Machines Corporation IBM | Executive Chairman | 29,446 0.0013% | $97.59 | $2.87M | +7.28% | |
| 2010-10-27 | Sale | International Business Machines Corporation IBM | Executive Chairman | 25,200 0.002% | $141.00 | $3.55M | +17.56% | |
| 2010-05-13 | Sale | International Business Machines Corporation IBM | Executive Chairman | 6,632 0.0005% | $133.00 | $882,056 | +10.28% | |
| 2010-04-28 | Sale | International Business Machines Corporation IBM | Executive Chairman | 7,630 0.0006% | $130.00 | $991,900 | +9.86% | |
| 2009-11-05 | Sale | International Business Machines Corporation IBM | Executive Chairman | 25,200 0.0019% | $123.04 | $3.1M | +5.54% | |
| 2009-02-27 | Sale | International Business Machines Corporation IBM | Executive Chairman | 6,000 0.0004% | $90.00 | $540,000 | +30.26% | |
| 2008-05-19 | American International Group, Inc. AIG | director | 2,500 <0.0001% | $39.07 | $97,681 | -94.95% | ||
| 2008-05-15 | Sale | International Business Machines Corporation IBM | Executive Chairman | 9,849 0.0007% | $128.00 | $1.26M | -21.2% | |
| 2008-05-01 | Sale | International Business Machines Corporation IBM | Executive Chairman | 29,400 0.0021% | $122.50 | $3.6M | -17.77% | |
| 2007-05-18 | Sale | International Business Machines Corporation IBM | Executive Chairman | 9,014 0.0005% | $83.50 | $752,708 | +4.08% | |
| 2007-02-16 | Sale | International Business Machines Corporation IBM | Executive Chairman | 26,470 0.0015% | $81.64 | $2.16M | +8.09% | |
| 2007-02-01 | Sale | International Business Machines Corporation IBM | Executive Chairman | 8,253 0.0005% | $98.75 | $815,022 | +8.13% |