| 2023-02-08 | Sale | Geron Corporation GERN | EVP, Chief Financial Officer | 400,000 0.0742% | $3.08 | $1.23M | -23.44% | |
| 2015-05-29 | Sale | Geron Corporation GERN | EVP, Chief Financial Officer | 4,760 0.003% | $3.84 | $18,278 | -14.77% | |
| 2014-05-29 | Sale | Geron Corporation GERN | EVP, Chief Financial Officer | 6,758 0.0043% | $2.10 | $14,192 | +44.58% | |
| 2014-04-01 | Sale | Geron Corporation GERN | EVP, Chief Financial Officer | 14,870 0.0095% | $2.13 | $31,673 | +22.05% | |
| 2012-05-30 | Sale | Geron Corporation GERN | VP, Chief Acctg Officer | 22,058 0.018% | $1.37 | $30,219 | +9.09% | |
| 2011-06-14 | Sale | Geron Corporation GERN | VP, Chief Acctg Officer | 13,994 0.0119% | $4.28 | $59,894 | -50.86% | |
| 2011-05-24 | Sale | Geron Corporation GERN | VP, Chief Acctg Officer | 2,400 0.002% | $4.47 | $10,728 | -53.51% |