Exhibit 99.1

B26 (Official Form 26) (12/08)

IN THE UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT OF DELAWARE

PERIODIC REPORT REGARDING VALUE, OPERATIONS AND

PROFITABILITY OF ENTITIES IN WHICH THE ESTATE OF DENDREON CORPORATION

HOLDS A SUBSTANTIAL OR CONTROLLING INTEREST

This is the report as of December 31, 2013 & June 30, 2014 on the value, operations and profitability of those entities in which the Debtors’ estates hold a substantial or controlling interest, as required by Bankruptcy Rule 2015.3. The estate of Dendreon Corporation holds a substantial or controlling interest in the following entity:

This periodic report (the “Periodic Report”) consists of three exhibits for each entity listed above. Exhibit A contains a valuation estimate for each entity as of a date not more than two years prior to the date of this report. It also contains a description of the valuation method used. Exhibit B is presented in columnar format for each entity and contains a balance sheet, a statement of operations, a statement of cash flows and a statement of changes in shareholders’ or partners’ equity (deficit) for the period covered by the Periodic Report, along with summarized footnotes. Exhibit C contains a description of the business operations of these entities.

¹ The Debtors and the last four digits of their respective taxpayer identification numbers are as follows: Dendreon Corporation (3193), Dendreon Holdings, LLC (8047), Dendreon Distribution, LLC (8598) and Dendreon Manufacturing, LLC (7123). The address of the Debtors’ corporate headquarters is 1301 2nd Avenue, Seattle, Washington 98101.

B26 (Official Form 26) (12/08) – Cont.

THIS REPORT MUST BE SIGNED BY A REPRESENTATIVE OF THE TRUSTEE OR DEBTOR IN POSSESSION.

The undersigned, having reviewed the above listing of entities in which the estate of Dendreon Corporation holds a substantial or controlling interest, and being familiar with the Debtors’ financial affairs, verifies under the penalty of perjury that the listing is complete, accurate and truthful to the best of his/her knowledge.

Date:  December 1, 2014

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B26 (Official Form 26) (12/08) – Cont.

Notes to Periodic Report Required by Bankruptcy Rule 2015.3

The financial statements contained in this Periodic Report are unaudited. While management of the Debtors and their affiliates have made every reasonable effort to ensure that these financial statements are accurate and complete based upon information that was available at the time of preparation, the subsequent receipt of information may result in material changes in the data contained in these financial statements, and inadvertent errors or omissions may exist. To the extent the Debtors discover additional information that may differ materially from the information set forth in the financial statements contained herein, the Debtors may amend, supplement or otherwise modify this Periodic Report to reflect such changes. Accordingly, the Debtors reserve all rights to amend, supplement or otherwise modify this Periodic Report as they deem necessary or appropriate.

1. Reservation of Rights. Nothing contained in this Periodic Report shall constitute a waiver of any of the Debtors’ rights or an admission with respect to their chapter 11 cases including, but not limited to, matters involving objections to claims, substantive consolidation, equitable subordination, defenses, characterization or re-characterization of contracts, assumption or rejection of contracts under the provisions of chapter 3 of title 11 of the United States Code (the “Bankruptcy Code”) and/or causes of action under the provisions of chapter 5 of the Bankruptcy Code or any other relevant applicable laws to recover assets or avoid transfers.

2. Basis of Presentation. The financial statements contained herein were not intended to reconcile to any financial statements otherwise prepared or distributed by the Debtors or any of the Debtors’ affiliates. Significant efforts have been put forth to attribute the assets and liabilities to the proper legal entity. However, the Debtors’ accounting systems, policies, and practices were developed with a view to producing consolidated reporting, rather than by legal entity. Accordingly, the Debtors reserve all rights to supplement or amend any financial statements contained in this Periodic Report.

Moreover, given, among other things, the uncertainty surrounding the collection and ownership of certain assets and the valuation and nature of certain liabilities, to the extent that a non-debtor entity shows more assets than liabilities, this is not an admission that the non-debtor entity was solvent at the Petition Date or at any time prior to the Petition Date, including the date as of or for the period of any financial statements or other financial information included in this Periodic Report. Likewise, to the extent that a non-debtor entity shows more liabilities than assets, this is not an admission that the non-debtor entity was insolvent at the Petition Date or at any time prior to the Petition Date, including the date as of or for the period of any financial statements or other financial information included in this Periodic Report.

3. Current values. Unless otherwise indicated, the basis for all current values included in this Periodic Report was the net book value from relevant corporate books and records as of the close of business on December 31, 2013 & June 30, 2014. The net book value as of December 31, 2013 & June 30, 2014 may not reflect the current value of the respective assets.

For the reasons discussed above, the Debtors caution readers not to place undue reliance upon the information contained in this Periodic Report. For further information, please refer to the consolidated financial statements and footnotes thereto in the respective Annual Report on Form 10-K for the fiscal year ended December 31, 2013 and the Quarterly Report on Form 10-Q for the period ended June 30, 2014 for the Debtors and other filings by the Debtors with the Securities and Exchange Commission.

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EXHIBIT A

Dendreon Corporation

Exhibit A - Schedule of Foreign Subsidiaries

NOTE: Valuations are based on net book value as of 6/30/14. Dendreon UK Limited is a UK subsidiary formed for the eventual sale and delivery of PROVENGE. As of 6/30/14, the company did not have any assets or liabilities.

EXHIBIT B

Dendreon Holdings BV

Comparative Balance Sheets

(Unaudited)

Dendreon Operations BV

Comparative Balance Sheets

(Unaudited)

Dendreon Germany GmbH

Comparative Balance sheets

(Unaudited)

Dendreon Holdings BV

Statement of Operations

(Unaudited)

Dendreon Operations BV

Statement of Operations

(Unaudited)

Dendreon Germany GmbH

Statement of Operations

(Unaudited)

Dendreon Holdings BV

Statement of Cash Flows

(Unaudited)

Dendreon Operations BV

Statement of Cash Flows

(Unaudited)

Dendreon Germany GmbH

Statement of Cash Flows

(Unaudited)

Dendreon Holdings BV

Statement of Changes in Owner’s Equity

(Unaudited)

Dendreon Operations BV

Statement of Changes in Owner’s Equity

(Unaudited)

Dendreon Germany GmbH

Statement of Changes in Owner’s Equity

(Unaudited)

EXHIBIT C