GERN · Geron Corp

Shares issued in lieu of cash compensation for quarterly board of directors' retainer and committee fees. Number of shares issued based on the closing price of the Issuer's common stock on June 30, 2026 of $1.28 per share.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

This option vests as follows: 312,500 shares underlying the option will vest on October 13, 2026; and the remaining shares will vest over the following 42 months in equal installments, provided that the Reporting Person provides continuous service to the Issuer on each such vesting date.

Shares issued in lieu of cash compensation for quarterly board of directors' retainer and committee fees. Number of shares issued based on the closing price of the Issuer's common stock on March 31, 2026 of $1.49 per share.

The option shall vest and become exercisable in three equal annual installments starting on March 25, 2027, subject to the Reporting Person's continuous service (as defined in the Issuer's 2018 Equity Incentive Plan) with the Issuer through each such vesting date.

The option shall vest and become exercisable in three equal annual installments starting on March 25, 2027, subject to the Reporting Person's continuous service (as defined in the Issuer's 2018 Equity Incentive Plan) with the Issuer through each such vesting date.

Shares of common stock acquired upon the vesting of restricted stock units ("RSUs").

Represents shares of common stock sold to cover tax withholding and remittance obligations in connection with the vesting of RSUs pursuant to mandatory "sell to cover" policies maintained by the Issuer and provisions contained in the Reporting Person's applicable RSU agreement, and does not represent a discretionary sale by the Reporting Person.

Each RSU represents the contingent right to receive one share of the Issuer's common stock.

The RSUs were granted on February 18, 2025 and vest in four consecutive equal annual installments from the date of grant, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.

The option vests in 48 equal monthly installments commencing on March 17, 2026, provided that the Reporting Person provides continuous service to the Issuer on each such vesting date.

The option vests in 48 equal monthly installments commencing on March 17, 2026, provided that the Reporting Person provides continuous service to the Issuer on each such vesting date.

Shares issued in lieu of cash compensation for quarterly board of directors' retainer and committee fees. Number of shares issued based on the closing price of the Issuer's common stock on December 31, 2025 of $1.32 per share.

The options vest as follows: 375,000 shares on April 20, 2026, the remaining 2,625,000 shares in a series of 42 equal monthly installments commencing April 20, 2026, provided the optionee continues to provide services to the Company.

Shares issued in lieu of cash compensation for quarterly board of directors' retainer and committee fees. Number of shares issued based on the closing price of the Issuer's common stock on September 30, 2025 of $1.37 per share.

The options vest as follows: 875,000 shares on February 7, 2026, the remaining 6,125,000 shares in a series of 42 equal monthly installments commencing February 7, 2026, provided the optionee continues to provide services to the Company.

The options vest as follows: 1,000,000 shares on August 7, 2026, the remaining 3,000,000 shares in a series of 36 equal monthly installments commencing August 7, 2026, provided the optionee continues to provide services to the Company.

Shares issued in lieu of cash compensation for quarterly board of directors' retainer and committee fees. Number of shares issued based on the closing price of the Issuer's common stock on June 30, 2025 of $1.41 per share.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

Shares issued in lieu of cash compensation for quarterly board of directors' retainer and committee fees. Number of shares issued based on the closing price of the Issuer's common stock on March 31, 2025 of $1.59 per share.

The reported transaction represents the open market purchase of 15,000 shares at an executed price of $1.61 per share.

The number of securities reported reflects the open market purchase of 15,000 shares and acquisition on June 30, 2024 of 7,432 shares and on December 31, 2024 of 4,250 shares of Geron common stock pursuant to the Employee Stock.

The reported transaction represents the open market purchase of 100,000 shares at an executed price of $1.60 per share.

The reported transaction represents the open market purchase of 12,500 shares at an executed price of $1.765 per share.

This option was granted on February 18, 2025 and vests in 48 consecutive equal monthly installments from the date of grant, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.

Each restricted stock unit ("RSU") represents the contingent right to receive one share of the Issuer's common stock.

The RSUs were granted on February 18, 2025 and vest in four consecutive equal annual installments from the date of grant, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.

Each restricted stock unit ("RSU") represents the contingent right to receive one share of the Issuer's common stock.

The RSUs were granted on February 18, 2025 and vest in four consecutive equal annual installments from the date of grant, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.

This option was granted on February 18, 2025 and vests in 48 consecutive equal monthly installments from the date of grant, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.

This option was granted on February 18, 2025 and vests in 48 consecutive equal monthly installments from the date of grant, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.

Each restricted stock unit ("RSU") represents the contingent right to receive one share of the Issuer's common stock.

The RSUs were granted on February 18, 2025 and vest in four consecutive equal annual installments from the date of grant, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.

Each restricted stock unit ("RSU") represents the contingent right to receive one share of the Issuer's common stock.

The RSUs were granted on February 18, 2025 and vest in four consecutive equal annual installments from the date of grant, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.

This option was granted on February 18, 2025 and vests in 48 consecutive equal monthly installments from the date of grant, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.

Each restricted stock unit ("RSU") represents the contingent right to receive one share of the Issuer's common stock.

The RSUs were granted on February 18, 2025 and vest in four consecutive equal annual installments from the date of grant, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.

This option was granted on February 18, 2025 and vests as to 1/8th of the shares underlying the option on the sixth-month anniversary of the Reporting Person's date of hire of September 9, 2024, and as to the remaining shares underlying the option in 42 consecutive equal monthly installments thereafter, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.

Shares issued in lieu of cash compensation for quarterly board of directors' retainer and committee fees. Number of shares issued based on the closing price of the Issuer's common stock on December 31, 2024 of $3.54 per share.

The options vest as follows: 312,500 shares on May 11, 2025, the remaining 2,187,500 shares in series of 42 equal monthly installments commencing May 11, 2025, provided the optionee continues to provide services to the Company.