Summary Notice of Proposed Settlement ROBBINS ARROYO LLP BRIAN J. ROBBINS (190264) CRAIG W. SMITH (164886) JENNY L. DIXON (192638) GINA STASSI (261263) 600 B Street, Suite 1900 San Diego, CA 92101 Telephone: (619) 525-39

CRAIG W. SMITH (164886)

JENNY L. DIXON (192638)

600 B Street, Suite 1900

Facsimile: (619) 525-3991

Plaintiff Joseph Oriente

SUPERIOR COURT OF THE STATE

YOU ARE HEREBY NOTIFIED,

pursuant to an Order of the California Superior Court for the County of San

Mateo (the "Court"), that a proposed Settlement has been reached between the

Parties to the following shareholder derivative actions brought on behalf of

Geron: (i) Oriente v.

Scarlett, Lead Case No. Civ

528121 and consolidated with Cavel

v. Scarlett, et al., Case No. Civ

535151 ("State Derivative Action"); and (ii) DiLaura v. Scarlett et al.,

Case No. 3:15-cv-02989-CRB and

Haddock v. Scarlett et

al., Case No. 3:15-cv-03007-CRB

("Federal Derivative Action") (collectively "Derivative Actions").

The Derivative Actions are

brought by Plaintiffs solely on behalf of and for the benefit of Geron and

against the Individual Defendants. Plaintiffs generally allege, among other

things, that the Individual Defendants breached their fiduciary duties, wasted

corporate assets, and were unjustly enriched in connection with allegedly

improper statements regarding the purported efficacy and safety of the Company's

investigational new drug candidate, imetelstat.

On November 18, 2016, at 9:30 a.m., the Court will hold the Settlement Hearing before the

Honorable Marie Weiner, Department 2, in the Superior Court of the State of California, San Mateo

County, located at Courtroom 2E, 400 County Center, Redwood City, California 94063-1655, to determine: (i) whether the terms of

the Settlement are fair, reasonable and adequate and should be approved; (ii)

whether a final judgment should be entered; (iii) whether the Court should award

the requested attorneys' fees and reimbursement of expenses for Plaintiffs'

Counsel and a service award to Plaintiffs; and (iv) such other matters as may be

necessary or proper under the circumstances. The Court may adjourn the

Settlement Hearing without further notice to Geron shareholders.

PLEASE READ THIS SUMMARY

NOTICE CAREFULLY AND IN ITS ENTIRETY. IF YOU ARE AN APPLICABLE GERON

SHAREHOLDER, YOUR RIGHTS MAY BE AFFECTED BY THE SETTLEMENT OF THE DERIVATIVE

a summary notice only. For additional information about the claims asserted in

the Derivative Actions and the terms of the proposed Settlement, please refer to

the documents filed in the respective Derivative Actions, the

Amended Stipulation of Settlement dated August 18, 2016, and the full-length Notice of Proposed Settlement (the "Notice").

The Stipulation and Notice may be viewed on the websites of Robbins Arroyo LLP

at http://www.robbinsarroyo.com/notices.html, The Shuman Law Firm at http://www.shumanlawfirm.com/notices/notices.html and Geron at

http://ir.geron.com/phoenix.zhtml?c=67323&p=irol-sec.

You have the right, but are

not required, to appear in person or through counsel at the Settlement Hearing

to object to the terms of the proposed Settlement or otherwise present evidence

or argument that may be proper and relevant. However, no Applicable Geron

Shareholders shall be heard or entitled to contest the approval of the proposed

Settlement, or, if approved, the Judgment to be entered hereon, unless that

Applicable Geron Shareholder has, at least fourteen (14) calendar days prior to the Settlement

Hearing, filed with the Clerk

of the Court a written objection to the Settlement setting forth: (i) a written

notice of objection with the Person's name, address, and telephone number, along

with a representation as to whether such Person intends to appear at the

Settlement Hearing; (ii) competent evidence that such Person held shares of

Geron common stock within the Relevant Time Period and/or as of July 22, 2016;

(iii) a statement of objections to any matters before the Court, the grounds

therefor, or the reasons for such Person desiring to appear and be heard, as

well as all documents or writings such Person desires the Court to consider; and

(iv) the identities of any witnesses such Person plans on calling at the

Settlement Hearing, along with a summary description of their likely

YOUR WRITTEN OBJECTIONS

MUST BE ON FILE WITH THE CLERK OF THE COURT NO LATER THAN November 4, 2016. The Court Clerk's address is:

YOU ALSO MUST DELIVER

COPIES OF THE MATERIALS TO PLAINTIFFS' COUNSEL AND COUNSEL FOR GERON SO THEY ARE

RECEIVED NO LATER THAN November 4, 2016. Counsel's addresses are:

Unless the Court orders

otherwise, your objection will not be considered unless it is timely filed with

the Court and delivered to Plaintiffs' Counsel and counsel for Geron. Any Person

or entity who fails to object or otherwise request to be heard in the manner

prescribed above will be deemed to have waived the right to object to any aspect

of the Settlement or otherwise request to be heard (including the right to

appeal) and will be forever barred from raising such objection or request to be

heard in this or any other action or proceeding.

PLEASE DO NOT TELEPHONE

THE COURT REGARDING THIS NOTICE