| 2018-03-02 | Sale | General Motors Company GM | director | 80M 6.0279% | $39.71 | $3.18B | +1.14% | |
| 2013-09-27 | Sale | General Motors Company GM | director | 120M – | $27.02 | $3.24B | -1.84% | |
| 2013-06-12 | Sale | General Motors Company GM | director | 20M 1.4952% | $34.41 | $688.2M | +7.49% | |
| 2010-11-23 | Sale | General Motors Company GM | director | 89M 5.8446% | $32.75 | $2.91B | -7.52% |