3. RESTRUCTURINGS

On April 25, 2013, we announced the decision to discontinue our discovery research programs and companion diagnostics program based on telomere length and close our research laboratory facility located at 200 Constitution Drive, Menlo Park, California. With this decision, a total of 20 positions were eliminated. In connection with this restructuring, we expect to record aggregate restructuring charges of approximately $1,500,000, of which $940,000 was recorded during the nine months ended September 30, 2013. As of September 30, 2013, the restructuring charges recognized under the April 2013 restructuring included $624,000 related to one-time termination benefits, including $28,000 of non-cash stock-based compensation expense relating to the extension of the post-termination exercise period through the end of December 2013 for certain stock options previously granted to terminated employees, $200,000 related to non-cash charges for write-downs of excess equipment and leasehold improvements and $116,000 related to costs associated with the closure of our research laboratory facility. The remaining projected restructuring charges relate to costs associated with the closure of our research laboratory facility and are expected to be recorded in the fourth quarter of 2013. We expect the restructuring will result in aggregate cash expenditures of approximately $1,250,000, of which $571,000 has been paid as of September 30, 2013 and related to one-time termination benefits and facility-related charges. The remaining cash expenditures are expected to be paid in the fourth quarter of 2013 and relate to facility-related charges. As of September 30, 2013, we have received proceeds of $1,000,000 from the sale of excess laboratory equipment in connection with the closure of our research laboratory facility. We may incur other charges associated with the April 2013 restructuring. Such charges, if any, will be recorded as they are determined.

On December 3, 2012, we announced the decision to discontinue development of GRN1005. With this decision, a total of 43 positions were eliminated. As of September 30, 2013, we have recognized aggregate restructuring charges of $2,794,000 for the December 2012 restructuring, of which $2,702,000 was recorded in the fourth quarter of 2012 and $92,000 was recorded in the first half of 2013. All actions associated with the December 2012 restructuring were completed in the first half of 2013, and we do not anticipate incurring any further charges in connection with the December 2012 restructuring.

On November 14, 2011, we announced the decision to focus on the development of our oncology programs and consequently, we discontinued further development of our stem cell programs. With this decision, a total of 66 positions were eliminated. All actions associated with the November 2011 restructuring were completed in 2012, and we do not anticipate incurring any further charges in connection with the November 2011 restructuring. All payments due under the November 2011 restructuring were made as of June 30, 2013.

The components relating to the April 2013, December 2012 and November 2011 restructurings, including the outstanding restructuring liability which is included in accrued restructuring charges on our condensed consolidated balance sheet as of September 30, 2013, are summarized in the following table:

(In thousands)	Employee Severance and Other Benefits			Asset Write Downs			Facility Related Charges			Total
Beginning accrual balance as of December 31, 2012	$	1,972		$	—		$	—		$	1,972
Restructuring charges	716			200			116			1,032
Cash payments	(2,373		)	—			(96		)	(2,469		)
Adjustments or non-cash credits, including stock-based compensation expense	(174		)	(200		)	—			(374		)
Ending accrual balance as of September 30, 2013	$	141		$	—		$	20		$	161