Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Geron Corp (GERN) since 2015 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Geron Corp. Table 2 shows the detailed insider transactions. This company's CIK number is 886744.
Total stock buying since 2015: $270,483.
Total stock sales since 2015: $20,933,533.
Total stock option exercises since 2015: $8,803,651.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2026 | 0 | $0 | 9,855 | $19,118 | 27,500 | $0 |
| 2025 | 127,500 | $206,212 | 0 | $0 | 0 | $0 |
| 2024 | 0 | $0 | 1,384,123 | $6,366,740 | 1,384,123 | $1,934,695 |
| 2023 | 13,186 | $30,064 | 2,194,719 | $6,658,630 | 1,995,000 | $2,956,000 |
| 2022 | 0 | $0 | 0 | $0 | 269,719 | $448,372 |
| 2020 | 20,441 | $34,207 | 0 | $0 | 0 | $0 |
| 2019 | 0 | $0 | 120,635 | $241,270 | 0 | $0 |
| 2018 | 0 | $0 | 1,537,250 | $7,342,497 | 1,537,250 | $3,376,735 |
| 2015 | 0 | $0 | 74,760 | $305,278 | 70,000 | $87,849 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2026-02 | 0 | $0 | 9,855 | $19,118 | 27,500 | $0 |
| 2025-02 | 127,500 | $206,212 | 0 | $0 | 0 | $0 |
| 2024-07 | 0 | $0 | 674,348 | $3,073,003 | 674,348 | $1,159,878 |
| 2024-06 | 0 | $0 | 709,775 | $3,293,737 | 709,775 | $774,817 |
| 2023-08 | 13,186 | $30,064 | 0 | $0 | 0 | $0 |
| 2023-05 | 0 | $0 | 70,000 | $191,800 | 70,000 | $77,000 |
| 2023-02 | 0 | $0 | 2,124,719 | $6,466,830 | 1,890,000 | $2,840,500 |
| 2023-01 | 0 | $0 | 0 | $0 | 35,000 | $38,500 |
| 2022-09 | 0 | $0 | 0 | $0 | 234,719 | $399,022 |
| 2022-04 | 0 | $0 | 0 | $0 | 35,000 | $49,350 |
| 2020-08 | 17,441 | $30,172 | 0 | $0 | 0 | $0 |
| 2020-01 | 3,000 | $4,035 | 0 | $0 | 0 | $0 |
| 2019-04 | 0 | $0 | 120,635 | $241,270 | 0 | $0 |
| 2018-09 | 0 | $0 | 175,000 | $1,198,750 | 175,000 | $570,500 |
| 2018-08 | 0 | $0 | 1,362,250 | $6,143,747 | 1,362,250 | $2,806,235 |
| 2015-05 | 0 | $0 | 4,760 | $18,278 | 0 | $0 |
| 2015-03 | 0 | $0 | 70,000 | $287,000 | 70,000 | $87,849 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2026-02-18 | Robertson Michelle (EVP, CHIEF FINANCIAL OFFICER) | Sale | 9,855 | 1.94 | 19,118 |
| 2026-02-18 | Robertson Michelle (EVP, CHIEF FINANCIAL OFFICER) | Option Ex | 27,500 | .00 | 0 |
| 2025-02-27 | Ziegler James (EVP, Chief Commercial Officer) | Buy | 100,000 | 1.60 | 160,000 |
| 2025-02-27 | Samuels Scott Alan (EVP, Chief Legal Officer) | Buy | 15,000 | 1.61 | 24,150 |
| 2025-02-27 | Scarlett John A (Chairman, President and CEO) | Buy | 12,500 | 1.76 | 22,062 |
| 2024-07-08 | Grethlein Andrew J (EVP, Chief Operating Officer) | Sale | 674,348 | 4.56 | 3,073,003 |
| 2024-07-08 | Grethlein Andrew J (EVP, Chief Operating Officer) | Option Ex | 674,348 | 1.72 | 1,159,878 |
| 2024-06-10 | Feller Faye (EVP, Chief Medical Officer) | Sale | 287,900 | 4.63 | 1,334,128 |
| 2024-06-10 | Feller Faye (EVP, Chief Medical Officer) | Option Ex | 287,900 | 1.14 | 327,630 |
| 2024-06-10 | Kapur Anil (EVP, Corp Strategy & CCO) | Sale | 421,875 | 4.64 | 1,959,609 |
| 2024-06-10 | Kapur Anil (EVP, Corp Strategy & CCO) | Option Ex | 421,875 | 1.06 | 447,187 |
| 2023-08-24 | O'farrell Elizabeth G. (Director) | Buy | 13,186 | 2.28 | 30,064 |
| 2023-05-11 | Lawlis V Bryan (Director) | Sale | 35,000 | 3.00 | 105,000 |
| 2023-05-11 | Lawlis V Bryan (Director) | Option Ex | 35,000 | 1.10 | 38,500 |
| 2023-05-01 | Molineaux Susan (Director) | Sale | 35,000 | 2.48 | 86,800 |
| 2023-05-01 | Molineaux Susan (Director) | Option Ex | 35,000 | 1.10 | 38,500 |
| 2023-02-10 | Scarlett John A (Chairman, President and CEO) | Sale | 446,668 | 3.00 | 1,340,004 |
| 2023-02-10 | Scarlett John A (Chairman, President and CEO) | Option Ex | 446,668 | 1.50 | 670,002 |
| 2023-02-09 | Scarlett John A (Chairman, President and CEO) | Sale | 446,666 | 3.03 | 1,353,397 |
| 2023-02-09 | Scarlett John A (Chairman, President and CEO) | Option Ex | 446,666 | 1.50 | 669,999 |
| 2023-02-09 | Grethlein Andrew J (EVP, Chief Operating Officer) | Sale | 384,719 | 3.03 | 1,165,698 |
| 2023-02-09 | Grethlein Andrew J (EVP, Chief Operating Officer) | Option Ex | 150,000 | 1.51 | 226,500 |
| 2023-02-08 | Bloom Olivia Kyusuk (EVP, Chief Financial Officer) | Sale | 400,000 | 3.08 | 1,232,000 |
| 2023-02-08 | Bloom Olivia Kyusuk (EVP, Chief Financial Officer) | Option Ex | 400,000 | 1.51 | 604,000 |
| 2023-02-08 | Scarlett John A (Chairman, President and CEO) | Sale | 446,666 | 3.08 | 1,375,731 |
| 2023-02-08 | Scarlett John A (Chairman, President and CEO) | Option Ex | 446,666 | 1.50 | 669,999 |
| 2023-01-13 | Eastham Karin (Director) | Option Ex | 35,000 | 1.10 | 38,500 |
| 2022-09-12 | Grethlein Andrew J (EVP, Chief Operating Officer) | Option Ex | 234,719 | 1.70 | 399,022 |
| 2022-04-20 | Eastham Karin (Director) | Option Ex | 35,000 | 1.41 | 49,350 |
| 2020-08-21 | O'farrell Elizabeth G. | Buy | 17,441 | 1.73 | 30,172 |
| 2020-01-10 | O'farrell Elizabeth G. (Director) | Buy | 3,000 | 1.34 | 4,035 |
| 2019-04-09 | Behrs Melissa Kelly (EVP, Chief Business Officer) | Sale | 120,635 | 2.00 | 241,270 |
| 2018-09-13 | Spiegel Robert J. (Director) | Sale | 175,000 | 6.85 | 1,198,750 |
| 2018-09-13 | Spiegel Robert J. (Director) | Option Ex | 175,000 | 3.26 | 570,500 |
| 2018-08-24 | Rosenfield Stephen (EVP, Genl Counsel & Secretary) | Sale | 1,362,250 | 4.51 | 6,143,747 |
| 2018-08-24 | Rosenfield Stephen (EVP, Genl Counsel & Secretary) | Option Ex | 1,362,250 | 2.06 | 2,806,235 |
| 2015-05-29 | Bloom Olivia Kyusuk (EVP, Chief Financial Officer) | Sale | 2,380 | 3.84 | 9,139 |
| 2015-05-29 | Behrs Melissa Kelly (EVP BD and Port&Alliance Mgmt) | Sale | 2,380 | 3.84 | 9,139 |
| 2015-03-18 | Hofstaetter Thomas (Director) | Sale | 70,000 | 4.10 | 287,000 |
| 2015-03-18 | Hofstaetter Thomas (Director) | Option Ex | 70,000 | 1.25 | 87,849 |
Insider trading activities including stock purchases, stock sales, and option exercises of GERN listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Geron Corp (symbol GERN, CIK number 886744) see the Securities and Exchange Commission (SEC) website.