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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549





FORM 10-Q







|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

For the quarterly period ended September 30, 2009



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

For the transition period from  to

Commission File Number 0-23155





TRIMERIS, INC.

(Exact name of registrant as specified in its charter)







|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Delaware                                                       |  | 56-1808663                          
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)

2530 Meridian Parkway, 2ndFloor

Durham, North Carolina 27713

(Address of principal executive offices, including zip code)

Registrants telephone number, including area code: (919) 806-4682





Indicate by check
mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to
file such reports), and (2) has been subject to such filing requirements for the past 90 days.    x  Yes    No   ̈

Indicate by check mark whether the registrant is a shell company (as defined in
Rule 12b-2 of the Exchange Act).    Yes   ̈    No  x

The number of shares outstanding of the registrants common stock as of November 3, 2009 was 22,349,841.

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a smaller reporting company or a
non-accelerated filer. See definition of large accelerated filer, accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act.



|                        |  |                                                  |  |                           |  |  
|----------------------- |  | ------------------------------------------------ |  | ------------------------- |  | -
|Large accelerated filer |  |  ̈                                                |  | Accelerated filer         |  |  ̈
|                        |  |                                                  | 
|Non-accelerated filer   |  |  ̈  (do not check if a smaller reporting company) |  | Smaller Reporting Company |  | x









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TRIMERIS, INC.

FORM 10-Q

September 30, 2009

INDEX



|               |  |                                                                                                    |  |     
|-------------- |  | -------------------------------------------------------------------------------------------------- |  | ----
|               |  |                                                                                                    |  | Page
|PART I.        |  | FINANCIAL INFORMATION                                                                              |  |     
|               |  |                                                                                                   
|Item 1.        |  | Financial Statements (unaudited)                                                                   |  | 3   
|               |  |                                                                                                   
|               |  | Condensed Balance Sheets as of September 30, 2009 and December 31, 2008                            |  | 3   
|               |  |                                                                                                   
|               |  | Condensed Statements of Operations for the Three and Nine Months Ended September 30, 2009 and 2008 |  | 4   
|               |  |                                                                                                   
|               |  | Condensed Statements of Cash Flows for the Nine Months Ended September 30, 2009 and
2008           |  | 5   
|               |  |                                                                                                   
|               |  | Notes to Condensed Financial Statements                                                            |  | 6   
|               |  |                                                                                                   
|Item 2.        |  | Managements Discussion and Analysis of Financial Condition and Results of
Operations              |  | 14  
|               |  |                                                                                                   
|Item 3.        |  | Quantitative and Qualitative Disclosures About Market Risk                                         |  | 25  
|               |  |                                                                                                   
|Item 4.        |  | Controls and Procedures                                                                            |  | 25  
|               |  |                                                                                                   
|PART II.       |  | OTHER INFORMATION                                                                                  |  |     
|               |  |                                                                                                   
|Item 1.        |  | Legal Proceedings                                                                                  |  | 27  
|               |  |                                                                                                   
|Item 1A.       |  | Risk Factors                                                                                       |  | 27  
|               |  |                                                                                                   
|Item 2.        |  | Unregistered Sales of Equity Securities and Use of Proceeds                                        |  | 29  
|               |  |                                                                                                   
|Item 3.        |  | Defaults Upon Senior Securities                                                                    |  | 29  
|               |  |                                                                                                   
|Item 4.        |  | Submission of Matters to a Vote of Security Holders                                                |  | 29  
|               |  |                                                                                                   
|Item 5.        |  | Other Information                                                                                  |  | 29  
|               |  |                                                                                                   
|Item 6.        |  | Exhibits                                                                                           |  | 29  
|               | 
|Signature Page |  | 30                                                                                                
|               | 
|Exhibit Index  |  | 31                                                                                                



2



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PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

TRIMERIS, INC.

CONDENSED BALANCE SHEETS

(in thousands, except par value)

(unaudited)



|                                                                                                                     |  |                   |          |   |                  |   |          |  
|-------------------------------------------------------------------------------------------------------------------- |  | ----------------- | -------- | - | ---------------- | - | -------- | -
|                                                                                                                     |  | September 30,2009 |          |   | December 31,2008 |  
|Assets                                                                                                               |  |                   |          |   |                  |   |          |  
|Current assets:                                                                                                      |  |                   |          |   |                  |   |          |  
|Cash and cash equivalents                                                                                            |  | $                 | 32,010   |   |                  | $ | 14,389   |  
|Investment securities available-for-sale                                                                             |  |                   | 3,607    |   |                  |   | 14,361   |  
|Accounts receivable - Roche                                                                                          |  |                   | 2,875    |   |                  |   | 2,840    |  
|Other receivables                                                                                                    |  |                   | 183      |   |                  |   | 36       |  
|Prepaid expenses                                                                                                     |  |                   | 127      |   |                  |   | 458      |  
|                                                                                                                     |  |                   |          |   |                  |   |          |  
|                                                                                                                     |  |                  
|Total current assets                                                                                                 |  |                   | 38,802   |   |                  |   | 32,084   |  
|                                                                                                                     |  |                   |          |   |                  |   |          |  
|Other assets:                                                                                                        |  |                   |          |   |                  |   |          |  
|Patent costs, net                                                                                                    |  |                   | 2,031    |   |                  |   | 1,750    |  
|Advanced payment - Roche                                                                                             |  |                   | 6,687    |   |                  |   | 6,706    |  
|Deposits and other assets                                                                                            |  |                   | 203      |   |                  |   | 339      |  
|Deferred tax asset                                                                                                   |  |                   | 506      |   |                  |   | 506      |  
|Long-term investment securities available-for-sale                                                                   |  |                   |         |   |                  |   | 2,827    |  
|                                                                                                                     |  |                   |          |   |                  |   |          |  
|                                                                                                                     |  |                  
|Total other assets                                                                                                   |  |                   | 9,427    |   |                  |   | 12,128   |  
|                                                                                                                     |  |                   |          |   |                  |   |          |  
|                                                                                                                     |  |                  
|Total assets                                                                                                         |  | $                 | 48,229   |   |                  | $ | 44,212   |  
|                                                                                                                     |  |                   |          |   |                  |   |          |  
|                                                                                                                     |  |                  
|Liabilities and Stockholders Equity                                                                                 |  |                   |          |   |                  |   |          |  
|Current liabilities:                                                                                                 |  |                   |          |   |                  |   |          |  
|Accounts payable                                                                                                     |  | $                 | 273      |   |                  | $ | 325      |  
|Accrued compensation                                                                                                 |  |                   | 439      |   |                  |   | 910      |  
|Deferred revenue  Roche                                                                                             |  |                   | 265      |   |                  |   | 265      |  
|Accrued expenses                                                                                                     |  |                   | 617      |   |                  |   | 2,041    |  
|                                                                                                                     |  |                   |          |   |                  |   |          |  
|                                                                                                                     |  |                  
|Total current liabilities                                                                                            |  |                   | 1,594    |   |                  |   | 3,541    |  
|                                                                                                                     |  |                  
|Deferred revenue - Roche                                                                                             |  |                   | 1,105    |   |                  |   | 1,304    |  
|Accrued marketing costs                                                                                              |  |                   | 18,463   |   |                  |   | 18,271   |  
|Accrued compensation-long-term                                                                                       |  |                   |         |   |                  |   | 74       |  
|                                                                                                                     |  |                   |          |   |                  |   |          |  
|                                                                                                                     |  |                  
|Total liabilities                                                                                                    |  |                   | 21,162   |   |                  |   | 23,190   |  
|                                                                                                                     |  |                   |          |   |                  |   |          |  
|Stockholders equity:                                                                                                |  |                   |          |   |                  |   |          |  
|Preferred Stock at $.001 par value per share, 10,000 shares authorized, zero shares issued and outstanding           |  |                   |         |   |                  |   |         |  
|Common Stock at $.001 par value per share, 60,000 shares authorized, 22,350 and 22,300 shares issued and
outstanding |  |                   | 22       |   |                  |   | 22       |  
|Additional paid-in capital                                                                                           |  |                   | 357,419  |   |                  |   | 356,600  |  
|Accumulated deficit                                                                                                  |  |                   | (330,597 | ) |                  |   | (335,652 | )
|Accumulated other comprehensive income                                                                               |  |                   | 223      |   |                  |   | 52       |  
|                                                                                                                     |  |                   |          |   |                  |   |          |  
|                                                                                                                     |  |                  
|Total stockholders equity                                                                                           |  |                   | 27,067   |   |                  |   | 21,022   |  
|                                                                                                                     |  |                   |          |   |                  |   |          |  
|                                                                                                                     |  |                  
|Total liabilities and stockholders equity                                                                           |  | $                 | 48,229   |   |                  | $ | 44,212   |  
|                                                                                                                     |  |                   |          |   |                  |   |          |  

See accompanying notes to condensed financial statements.



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TRIMERIS, INC.

CONDENSED STATEMENTS OF OPERATIONS

(in thousands, except per share data)

(unaudited)



|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|-------------------------------------------------------------- |  | --------------------------------------- | ------ | - | -------------------------------------- | - | ------ | ---- |  | - | ------ | - |  | - | ------ | -
|                                                               |  | For the Three Months EndedSeptember 30, |        |   | For the Nine Months EndedSeptember 30, |  
|                                                               |  | 2009                                    |        |   | 2008                                   |   |        | 2009 |  |   | 2008   |  
|Revenue:                                                       |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|Milestone revenue                                              |  | $                                       | 67     |   |                                        | $ | 67     |      |  | $ | 199    |   |  | $ | 199    |  
|Royalty revenue                                                |  |                                         | 2,141  |   |                                        |   | 3,373  |      |  |   | 6,251  |   |  |   | 8,663  |  
|Collaboration income                                           |  |                                         | 1,702  |   |                                        |   | 1,756  |      |  |   | 5,555  |   |  |   | 6,154  |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Total revenue and collaboration income                         |  |                                         | 3,910  |   |                                        |   | 5,196  |      |  |   | 12,005 |   |  |   | 15,016 |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Operating expenses:                                            |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|Research and development                                       |  |                                         |       |   |                                        |   | 367    |      |  |   |       |   |  |   | 2,923  |  
|General and administrative                                     |  |                                         | 1,669  |   |                                        |   | 1,519  |      |  |   | 4,805  |   |  |   | 5,778  |  
|(Gain)/Loss on disposal of equipment                           |  |                                         |       |   |                                        |   | (10    | )    |  |   | (23    | ) |  |   | 496    |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Total operating expenses                                       |  |                                         | 1,669  |   |                                        |   | 1,876  |      |  |   | 4,782  |   |  |   | 9,197  |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Operating income                                               |  |                                         | 2,241  |   |                                        |   | 3,320  |      |  |   | 7,223  |   |  |   | 5,819  |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Other income (expense):                                        |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|Interest income                                                |  |                                         | 59     |   |                                        |   | 397    |      |  |   | 338    |   |  |   | 1,756  |  
|Gain/(Loss) on investments                                     |  |                                         | 241    |   |                                        |   | (15    | )    |  |   | 298    |   |  |   | (703   | )
|Interest expense                                               |  |                                         | (64    | ) |                                        |   | (96    | )    |  |   | (192   | ) |  |   | (285   | )
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|Total other income                                             |  |                                         | 236    |   |                                        |   | 286    |      |  |   | 444    |   |  |   | 768    |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Income before taxes                                            |  |                                         | 2,477  |   |                                        |   | 3,606  |      |  |   | 7,667  |   |  |   | 6,587  |  
|Income tax provision                                           |  |                                         | 833    |   |                                        |   | 47     |      |  |   | 2,612  |   |  |   | 110    |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Net income                                                     |  | $                                       | 1,644  |   |                                        | $ | 3,559  |      |  | $ | 5,055  |   |  | $ | 6,477  |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Basic net income per share                                     |  | $                                       | 0.07   |   |                                        | $ | 0.16   |      |  | $ | 0.23   |   |  | $ | 0.29   |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Diluted net income per share                                   |  | $                                       | 0.07   |   |                                        | $ | 0.16   |      |  | $ | 0.23   |   |  | $ | 0.29   |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Weighted average shares used in basic per share computations   |  |                                         | 22,320 |   |                                        |   | 22,186 |      |  |   | 22,297 |   |  |   | 22,180 |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Weighted average shares used in diluted per share computations |  |                                         | 22,320 |   |                                        |   | 22,271 |      |  |   | 22,297 |   |  |   | 22,270 |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  
|                                                               |  |                                         |        |  
|Dividends declared per common share                            |  | $                                       |       |   |                                        | $ |       |      |  | $ |       |   |  | $ | 1.50   |  
|                                                               |  |                                         |        |   |                                        |   |        |      |  |   |        |   |  |   |        |  

See accompanying notes to condensed financial statements.



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TRIMERIS, INC.

CONDENSED STATEMENTS OF CASH FLOWS

(in thousands, unaudited)



|                                                                                  |  |                                |        |   |      |   |         |  
|--------------------------------------------------------------------------------- |  | ------------------------------ | ------ | - | ---- | - | ------- | -
|                                                                                  |  | Nine Months EndedSeptember 30, |       
|                                                                                  |  | 2009                           |        |   | 2008 |  
|                                                                                  |  |                               
|Cash flows from operating activities:                                             |  |                                |        |   |      |   |         |  
|Net income                                                                        |  | $                              | 5,055  |   |      | $ | 6,477   |  
|Adjustments to reconcile net income to net cash provided by operating activities: |  |                                |        |   |      |   |         |  
|Depreciation and amortization of property, furniture and equipment                |  |                                |       |   |      |   | 135     |  
|(Gain)/Loss on disposal of equipment                                              |  |                                | (23    | ) |      |   | 496     |  
|Patent/license amortization                                                       |  |                                | 175    |   |      |   | 151     |  
|Patent costs expensed                                                             |  |                                | 197    |   |      |   | 100     |  
|Amortization of deferred revenue  Roche                                          |  |                                | (199   | ) |      |   | (199    | )
|Stock compensation expense                                                        |  |                                | 819    |   |      |   | 1,193   |  
|Accrued marketing costs                                                           |  |                                | 192    |   |      |   | 285     |  
|Changes in operating assets and liabilities:                                      |  |                                |        |   |      |   |         |  
|Accounts receivable - Roche                                                       |  |                                | (35    | ) |      |   | 8,899   |  
|Other receivables                                                                 |  |                                | (147   | ) |      |   | 50      |  
|Prepaid expenses                                                                  |  |                                | 331    |   |      |   | 574     |  
|Advanced payment - Roche                                                          |  |                                | 19     |   |      |   | (12     | )
|Deposits and other assets                                                         |  |                                | 126    |   |      |   | 6       |  
|Accounts payable                                                                  |  |                                | (52    | ) |      |   | (415    | )
|Accrued compensation                                                              |  |                                | (367   | ) |      |   | (2,959  | )
|Accrued expenses                                                                  |  |                                | (1,602 | ) |      |   | 1,115   |  
|Other liabilities                                                                 |  |                                |       |   |      |   | (718    | )
|                                                                                  |  |                                |        |   |      |   |         |  
|                                                                                  |  |                               
|Net cash provided by operating activities                                         |  |                                | 4,489  |   |      |   | 15,178  |  
|                                                                                  |  |                                |        |   |      |   |         |  
|                                                                                  |  |                               
|Cash flows from investing activities:                                             |  |                                |        |   |      |   |         |  
|Purchases of investment securities available-for-sale                             |  |                                |       |   |      |   | (39,179 | )
|Sales and maturities of investment securities available-for-sale                  |  |                                | 13,752 |   |      |   | 48,952  |  
|Proceeds from the sale of equipment                                               |  |                                | 23     |   |      |   | 987     |  
|Patent costs                                                                      |  |                                | (643   | ) |      |   | (486    | )
|                                                                                  |  |                                |        |   |      |   |         |  
|                                                                                  |  |                               
|Net cash provided by investing activities                                         |  |                                | 13,132 |   |      |   | 10,274  |  
|                                                                                  |  |                                |        |   |      |   |         |  
|                                                                                  |  |                               
|Cash flows from financing activities:                                             |  |                                |        |   |      |   |         |  
|Dividends paid                                                                    |  |                                |       |   |      |   | (33,333 | )
|                                                                                  |  |                                |        |   |      |   |         |  
|                                                                                  |  |                               
|Net cash used in financing activities                                             |  |                                |       |   |      |   | (33,333 | )
|                                                                                  |  |                                |        |   |      |   |         |  
|                                                                                  |  |                               
|Net increase (decrease) in cash and cash equivalents                              |  |                                | 17,621 |   |      |   | (7,881  | )
|Cash and cash equivalents, beginning of period                                    |  |                                | 14,389 |   |      |   | 32,702  |  
|                                                                                  |  |                                |        |   |      |   |         |  
|Cash and cash equivalents, end of period                                          |  | $                              | 32,010 |   |      | $ | 24,821  |  
|                                                                                  |  |                                |        |   |      |   |         |  

See accompanying notes to condensed financial statements.



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TRIMERIS, INC.

NOTES TO CONDENSED FINANCIAL STATEMENTS

(unaudited)

1. BASIS OF PRESENTATION

Trimeris, Inc. (Trimeris or the Company) is a biopharmaceutical company primarily engaged in the commercialization of
a new class of antiviral drug treatments called fusion inhibitors. Fusion inhibitors prevent viral fusion, a complex process by which viruses attach to, penetrate and infect host cells. If a virus cannot enter a host cell, the virus cannot
replicate. By inhibiting the fusion process of particular types of viruses, like the Human Immunodeficiency Virus (HIV), our first commercial product, T-20, and our development-stage compound, TRI-1144, offer a novel mechanism of action
to treat and potentially prevent the transmission of HIV.

Trimeris has a worldwide agreement (the
Development and License Agreement) with F. Hoffmann-La Roche Ltd. (Roche) to develop and market T-20, marketed as FUZEON®, whose generic name is enfuvirtide. FUZEON is manufactured and distributed by Roche through Roches sales and distribution network throughout the world in
countries where regulatory approval has been received. The Company shares gross profits equally from the sale of FUZEON in the United States and Canada with Roche, and receives a royalty based on net sales of FUZEON outside the United States and
Canada.

The Development and License Agreement with Roche accounted for 100% of the Companys royalty revenue for the
three and nine months ended September 30, 2009 and September 30, 2008. The Development and License Agreement also provides substantially all of the Companys collaboration and milestone revenue. Substantially all of the accounts
receivable at September 30, 2009 and December 31, 2008 is comprised of receivables from Roche under the Development and License Agreement.

The accompanying unaudited condensed financial statements have been prepared in accordance with United States generally accepted accounting principles and applicable Securities and Exchange Commission
(the SEC) regulations for interim financial information. Certain information and footnote disclosures normally included in financial statements prepared in accordance with United States generally accepted accounting principles have been
condensed or omitted pursuant to the SEC rules and regulations. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) necessary for a fair presentation of financial position and results of operations have
been made. Operating results for interim periods are not necessarily indicative of results that may be expected for a full year. The information included in this Form 10-Q should be read in conjunction with the Risk Factors and
Managements Discussion and Analysis of Financial Condition and Results of Operations sections and the 2008 financial statements and notes thereto included in the Companys 2008 Annual Report on Form 10-K for the year ended
December 31, 2008 filed with the SEC on March 13, 2009.

The preparation of financial statements in conformity with
United States generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial
statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Trimeris has previously announced shifts in strategic focus resulting in changes to Trimeris previous business strategy and plans for future operations. On October 2, 2009, Trimeris, Arigene
Co., Ltd., a corporation organized under the laws of the Republic of Korea (Arigene) and RTM Acquisition Company, a Delaware corporation and wholly owned subsidiary of Arigene (the Purchaser), entered into an Agreement and
Plan of Merger (the Merger Agreement) pursuant to which Arigene and the Purchaser agreed to purchase all of the outstanding common stock of Trimeris through a tender offer and merger. Under the Merger Agreement, upon completion of the
tender offer by the Purchaser (the Tender Offer) and satisfaction of certain conditions, the Purchaser will be merged with and into Trimeris (the Merger), with Trimeris continuing after the Merger as the surviving corporation
and a wholly owned subsidiary of Arigene. For more information regarding this transaction, see footnote 10, Subsequent Events, below.

2.
BASIC AND DILUTED NET INCOME PER SHARE

In accordance with Financial Accounting Standards Board, (FASB), Accounting
Standards Codification (ASC), Topic 260, Earnings Per Share, basic net income per common share is calculated by dividing net income by the weighted-average number of common shares outstanding for the period. Diluted net
income per common share reflects the maximum dilutive effect of common stock issuable upon exercise of stock options, restricted stock, stock warrants and purchases under the Companys Employee Stock



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Purchase Plan (the Employee Stock Purchase Plan). The dilutive effect of outstanding options, restricted stock, stock warrants and purchases under the Employee Stock Purchase Plan is
reflected in diluted earnings per share by application of the treasury stock method, which includes consideration of stock-based compensation required by FASB ASC Topic 718, Compensation-Stock Compensation (ASC 718). The
following table sets forth the computation of basic and diluted net income per share for the three and nine months ended September 30, 2009 and September 30, 2008 (in thousands, except per share amounts):



|                                            |  |                                      |        |                                      |   |                                     |  |                                     |        |  |   |       
|------------------------------------------- |  | ------------------------------------ | ------ | ------------------------------------ | - | ----------------------------------- |  | ----------------------------------- | ------ |  | - | ------
|                                            |  | Three Months EndedSeptember 30, 2009 |        | Three Months EndedSeptember 30, 2008 |   | Nine Months EndedSeptember 30, 2009 |  | Nine Months EndedSeptember 30, 2008
|                                            |  |                                      |        |                                     
|Numerator:                                  |  |                                      |        |                                      |   |                                     |  |                                     |        |  |   |       
|Net income                                  |  | $                                    | 1,644  |                                      | $ | 3,559                               |  | $                                   | 5,055  |  | $ | 6,477 
|                                            |  |                                      |        |                                     
|Denominator:                                |  |                                      |        |                                      |   |                                     |  |                                     |        |  |   |       
|Weighted average common shares              |  |                                      | 22,320 |                                      |   | 22,186                              |  |                                     | 22,297 |  |   | 22,180
|                                            |  |                                      |        |                                      |   |                                     |  |                                     |        |  |   |       
|Denominator for basic calculation           |  |                                      | 22,320 |                                      |   | 22,186                              |  |                                     | 22,297 |  |   | 22,180
|Restricted stock and restricted stock units |  |                                      |       |                                      |   | 85                                  |  |                                     |       |  |   | 90    
|                                            |  |                                      |        |                                      |   |                                     |  |                                     |        |  |   |       
|Denominator for diluted calculation         |  |                                      | 22,320 |                                      |   | 22,271                              |  |                                     | 22,297 |  |   | 22,270
|                                            |  |                                      |        |                                      |   |                                     |  |                                     |        |  |   |       
|                                            |  |                                      |        |                                     
|Net income per share:                       |  |                                      |        |                                      |   |                                     |  |                                     |        |  |   |       
|Basic                                       |  | $                                    | 0.07   |                                      | $ | 0.16                                |  | $                                   | 0.23   |  | $ | 0.29  
|                                            |  |                                      |        |                                      |   |                                     |  |                                     |        |  |   |       
|                                            |  |                                      |        |                                     
|Diluted                                     |  | $                                    | 0.07   |                                      | $ | 0.16                                |  | $                                   | 0.23   |  | $ | 0.29  
|                                            |  |                                      |        |                                      |   |                                     |  |                                     |        |  |   |       

The calculation of diluted net income per share excludes all anti-dilutive shares.
For the three and nine months ended September 30, 2009 and September 30, 2008, the number of anti-dilutive shares issuable upon exercise of options that were excluded, as calculated based on the weighted average closing price of the
Companys common stock for these periods, amounted to approximately 2.4 million and 2.5 million, respectively. Also excluded for the three and nine months ended September 30, 2008 was 362,000 warrants to purchase common stock,
due to their anti-dilutive effect. These warrants expired in July 2009.

At September 30, 2009, there were 2,400,000
options to purchase common stock and 30,000 shares of restricted stock, due to vest in August 2011, outstanding. At September 30, 2008, there were 2,500,000 options to purchase common stock, 85,000 shares of restricted stock/restricted stock
units that vested in March 2009 and 362,000 warrants to purchase common stock outstanding.

3. ROCHE COLLABORATION

The Development and License Agreement

In July 1999, the Company entered into a Development and License Agreement with Roche to develop and commercialize T-20, currently marketed as FUZEON, whose generic name is enfuvirtide, and T-1249, or a
replacement compound. The Development and License Agreement has been amended several times; most recently in March 2007, the agreement was amended to cover only the development and commercialization of FUZEON. The Development and License Agreement
will effectively terminate upon the expiration of the last relevant patent covering FUZEON. Our present understanding is that this expiration date will occur in 2021.

The Development and License Agreement, as amended, grants Roche an exclusive, worldwide license for FUZEON. Under this agreement, a joint management committee consisting of members from Trimeris and Roche
oversees the strategy for the collaboration. Roche may terminate its license for a particular country in its sole discretion with advance notice. In addition, the Development and License Agreement gives Roche significant control over important
aspects of the commercialization of FUZEON, including but not limited to pricing, sales force activities and promotional activities. Under the Development and License Agreement, Roche cannot adopt a budget for the marketing of FUZEON above certain
limits without the agreement of the Company.

As mentioned above, in March 2007, the Company entered into an agreement with
Roche that amended the terms of both the Development and License Agreement and the Research Agreement. This amendment provided that all intellectual property that was formerly shared between the companies, other than intellectual property related to
FUZEON, would now belong solely to Trimeris. The returned intellectual property covers both research and development stage molecules, including T-1249. Currently, there are no patients being treated with T-1249. Following the March 2007 amendment,
Roche is responsible for only one remaining $5.0 million milestone under the Development and License Agreement payable upon the achievement of a certain cumulative twelve-month sales threshold for FUZEON in the United States and Canada.



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Collaboration Income

Product sales of FUZEON began in the United States in March 2003 and are recorded by Roche. Under the Development and License Agreement with
Roche, the Company shares gross profit from the sale of FUZEON in the United States and Canada equally with Roche. Collaboration income is calculated as follows: Total gross sales of FUZEON in the United States and Canada is reduced by any
discounts, returns or rebates resulting in total net sales. Net sales are reduced by costs of goods sold resulting in gross profit. Gross profit is reduced by certain selling, marketing, and other expenses and post-marketing commitments related to
the sale of FUZEON resulting in operating income or loss. The Companys share of the operating income or loss is reported as collaboration income or loss as a component of revenue. Total net sales of FUZEON in the United States and Canada were
$10.4 million and $14.9 million during the three months ended September 30, 2009 and September 30, 2008, respectively. Total net sales of FUZEON in the United States and Canada were $30.1 million and $48.0 million during the nine months
ended September 30, 2009 and September 30, 2008, respectively. During the three months ended September 30, 2009 and September 30, 2008, the gross profit from the sale of FUZEON exceeded the sales, marketing and other expenses
resulting in the Companys share of operating profit from the sale of FUZEON in the United States of $1.7 million and $1.8 million, respectively. During the nine months ended September 30, 2009 and September 30, 2008, the gross profit
from the sale of FUZEON exceeded the sales, marketing and other expenses resulting in the Companys share of operating profit from the sale of FUZEON in the United States of $5.6 million and $6.2 million, respectively. Revenue is recognized
when Roche ships the drug and title and risk of loss passes to wholesalers. FUZEON is widely available through retail pharmacies and wholesalers across North America.

Roche is responsible for the manufacture, sales, marketing and distribution of FUZEON. Roche manufactures bulk quantities of FUZEON drug substance in its Boulder, Colorado facility and produces finished
drug product from bulk drug substance at another Roche facility. The finished drug product is then shipped to a Roche facility for distribution. Roches sales force is responsible for selling FUZEON. Under the Development and License Agreement
with Roche, the Company does not have the ability or rights to co-market this drug or field its own FUZEON sales force. All third party contracts for manufacturing, distribution, sale, and reimbursement are between Roche and the third party. The
Company is not a party to any of the material contracts in these areas. Roche provides the Company with information on manufacturing, sales and distribution of FUZEON. Roche is responsible for estimating reductions to gross sales for expected
returns of expired products, government rebate programs, such as Medicaid reimbursements, and customer incentives, such as cash discounts for prompt payment. The Company reviews these items for accuracy and reasonableness.

Roche prepares estimates for sales returns and allowances, discounts and rebates based primarily on its historical experience with FUZEON
and other anti-HIV drugs and their estimates of the payor mix for FUZEON, updated for changes in facts and circumstances on a quarterly basis. If actual results differ from these estimates, these estimates will be adjusted, which could have an
effect on results of operations in the period of adjustment.

Accrued Marketing Costs

The Company and Roche agreed to limit the Companys actual cash contribution to the FUZEON selling and marketing expenses in 2004 to
approximately $11.2 million, even though Roche spent significantly more on these expenses. If certain cumulative levels of sales for FUZEON in the United States and Canada are achieved, the Companys share of the additional expenses incurred by
Roche during 2004 will be payable to Roche beginning at a future date over several years from that future date. During the fourth quarter of 2008, we revised our estimate of the date that payments will begin from 2017 to 2022. During 2004, the
Company recorded $15.6 million as part of collaboration loss, which represented the net present value of the Companys estimated share of the expenses that were in excess of approximately $11.2 million. This amount was determined by taking into
account the expected timing and terms of payment under the Development and License Agreement, discounted at a risk free interest rate. The Company is increasing the liability over time to the expected payment amount. For the three months ended
September 30, 2009 and September 30, 2008, the Company increased the recorded liability by $64,000 and $96,000, respectively, for accretion of interest. For the nine months ended September 30, 2009 and September 30, 2008, the
Company increased the recorded liability by $192,000 and $285,000, respectively, for accretion of interest. The total liability of $18.5 million and $18.3 million at September 30, 2009 and December 31, 2008 is reflected on the
Companys balance sheets under the caption Accrued marketing costs.

The accrued marketing costs apply only
to the 2004 FUZEON marketing costs; with respect to both 2009 and 2008, there are no accrued marketing costs.

Advanced
PaymentRoche

In September 2005, the Company entered into a Letter of Amendment (the Manufacturing
Amendment) with Roche, which amended the Development and License Agreement and set forth certain rights and responsibilities that the parties previously agreed to with respect to the manufacture and sale of FUZEON. The Company was obligated to
pay Roche for the Companys share of the capital invested in Roches manufacturing facility over a seven-year period. As a result, Roche no longer includes the depreciation related to the manufacturing facility in cost of goods sold.



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Under the terms of the Manufacturing Amendment, the Companys contribution to the
capital improvements made at Roches manufacturing facility is to be reviewed on an annual basis. Following such review, the Companys contribution will be adjusted, when necessary, to reflect changes to the relative geographic
distribution of FUZEON sales. During the first quarter of 2008, the Company and Roche reviewed certain FUZEON sales data which resulted in a change in the amount of the Companys contribution to the capital investment. Following this 2008
review, the Company expected to contribute approximately $12.1 million towards the capital investment as compared to its previous expectation of approximately $12.8 million. As of September 30, 2009, the Company has paid the total $12.1 million
contribution and no further capital improvement payments are due.

These payments, net of the portion allocated to cost of
goods sold, were recorded as an asset presented as Advanced payment  Roche. This asset is amortized based on an estimate of the units of FUZEON sold during the collaboration period in order to properly allocate the capital
investment to cost of goods sold as the related inventory is sold in future periods. Assuming sales of FUZEON continue, the Company estimates that this asset has a remaining useful life of approximately 12 years. The carrying value of this asset
will be evaluated for impairment if an event occurs that triggers an impairment review.

Under the Manufacturing Amendment, if
the Roche-owned facilities in Boulder, Colorado used for the manufacture of FUZEON, are used to produce other products for Roche, a credit to the collaboration will result. The Companys share of this credit was approximately $1.9 million for
the nine months ended September 30, 2009. These credits have been recorded on the Companys balance sheets as a reduction to the Advanced payment  Roche. These credits offset variances that would otherwise have been
allocated to FUZEON if the facilities had remained underutilized and will be recognized when the related FUZEON produced during these periods is sold.

Royalty Revenue

The Company receives royalties on sales of FUZEON in
countries outside of the United States and Canada. Roche is responsible for all activities related to FUZEON outside of the United States and Canada, including regulatory, manufacturing, sales and distribution. These royalties are recognized as
revenue when the sales are made by Roche. To calculate the royalty revenue, an 8% distribution charge is deducted from Roches reported net sales, from which the Company receives a 12% royalty. Royalties of $2.1 million and $3.4 million were
recognized as revenue during the three months ended September 30, 2009 and September 30, 2008, respectively. Royalties of $6.3 million and $8.7 million were recognized as revenue during the nine months ended September 30, 2009 and
September 30, 2008, respectively.

Development Expenses

Under the Development and License Agreement, development costs for FUZEON are shared equally. Development typically includes certain clinical
and pre-clinical studies performed on a clinical candidate compound, as well as post-marketing commitments related to approved drugs. Currently only Roche incurs development costs for FUZEON. Quarterly, the companies reconcile the amounts expended
and one party pays the other party on a 50/50 basis. Roche holds the Investigational New Drug (IND) and the New Drug Application (NDA) for FUZEON and is responsible for all regulatory issues, maintenance activities and
communications with the FDA. On January 1, 2009, we adopted FASB ASC Topic 808 Collaborative Arrangements (ASC 808). As a result, all development expenses generated at Roche related to FUZEON are included in the
Companys collaboration income. Prior to January 1, 2009, such amounts were presented in research and development expenses. Prior period amounts have been reclassified to conform to the current periods presentation. We expect
Roches development costs to continue to decline as a majority of activities have been completed.

4. COMPREHENSIVE INCOME

Comprehensive income includes all non-owner changes in equity during a period and is divided into two broad classifications: net income and
other comprehensive income (OCI). OCI includes revenue, expenses, gains, and losses that are excluded from earnings under generally accepted accounting principles. For the Company, OCI consists of unrealized gains or losses on securities
available-for-sale securities.

The table below presents the Companys OCI for the three and nine months ended
September 30, 2009 and September 30, 2008:



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|                                                                   |  |                                 |       |   |                                |   |       |      |  |      |       |  |   |       |  
|------------------------------------------------------------------ |  | ------------------------------- | ----- | - | ------------------------------ | - | ----- | ---- |  | ---- | ----- |  | - | ----- | -
|(in thousands)                                                     |  | Three Months EndedSeptember 30, |       |   | Nine Months EndedSeptember 30, |  
|                                                                   |  |                                 |       |  
|                                                                   |  | 2009                            |       |   | 2008                           |   |       | 2009 |  | 2008 |      
|                                                                   |  |                                 |       |  
|Net income                                                         |  | $                               | 1,644 |   |                                | $ | 3,559 |      |  | $    | 5,055 |  | $ | 6,477 |  
|                                                                   |  |                                 |       |  
|Reclassification of realized loss on securities available-for-sale |  |                                 |      |   |                                |   |      |      |  |      |      |  |   | 206   |  
|                                                                   |  |                                 |       |  
|Unrealized gain (loss) on securities available-for-sale            |  |                                 | (146  | ) |                                |   | (439  | )    |  |      | 170   |  |   | (520  | )
|                                                                   |  |                                 |       |   |                                |   |       |      |  |      |       |  |   |       |  
|                                                                   |  |                                 |       |  
|Other comprehensive income (OCI)                                   |  | $                               | 1,498 |   |                                | $ | 3,120 |      |  | $    | 5,225 |  | $ | 6,163 |  
|                                                                   |  |                                 |       |   |                                |   |       |      |  |      |       |  |   |       |  

5. INVESTMENT SECURITIES AVAILABLE-FOR-SALE

Investment securities, which consist of corporate bonds, are classified as available-for-sale, and are reported at fair value based on quoted
market prices and other observable inputs. The cost of securities sold is determined using the specific identification method when computing realized gains and losses. Unrealized gains and losses are included as a component of stockholders
equity until realized.

In accordance with its investment policy, the Company limits the amount of credit exposure with any
one issuer and the investments are generally not collateralized.

The following is a summary of available-for-sale securities
excluding cash and cash equivalents as of September 30, 2009:



|                                                          |  |               |       |                      |   |                       |  |             |   |  |   |      
|--------------------------------------------------------- |  | ------------- | ----- | -------------------- | - | --------------------- |  | ----------- | - |  | - | -----
|(in thousands)                                            |  | AmortizedCost |       | GrossUnrealizedGains |   | GrossUnrealizedLosses |  | MarketValue
|Short-term investment securities available-for-sale       |  |               |       |                      |   |                       |  |             |   |  |   |      
|Corporate debt securities maturing within 1 year          |  | $             | 3,596 |                      | $ | 11                    |  | $           |  |  | $ | 3,607
|                                                          |  |               |       |                      |   |                       |  |             |   |  |   |      
|Total short-term investment securities available-for-sale |  | $             | 3,596 |                      | $ | 11                    |  | $           |  |  | $ | 3,607
|                                                          |  |               |       |                      |   |                       |  |             |   |  |   |      

The Company adopted FASB ASC Topic 820, Fair Value Measurements and
Disclosures, (ASC 820) effective January 1, 2008 for financial assets and liabilities measured on a recurring basis. ASC 820 applies to all financial assets and liabilities that are being measured and reported on a fair value
basis. There was no impact to the financial statements upon the adoption of ASC 820. ASC 820 establishes a framework for measuring fair value and expands disclosure about fair value measurements. The statement requires fair value measurements be
classified and disclosed in one of the following three categories:



| | Level 1: | Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets and liabilities.
| | -------- | ------------------------------------------------------------------------------------------------------------------------------------------



| | Level 2: | Quoted prices in markets that are not active or financial instruments for which all significant inputs are observable, either directly or indirectly.
| | -------- | -----------------------------------------------------------------------------------------------------------------------------------------------------



| | Level 3: | Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.
| | -------- | ------------------------------------------------------------------------------------------------------------------

A financial instruments level within the fair value hierarchy is based on the lowest level of any input that is significant to the
fair value measurement.

The Companys assets that are measured at fair value on a recurring basis are generally
classified within Level 1 or Level 2 of the fair value hierarchy. The types of instruments valued based on quoted market prices in active markets include most money market securities, and corporate bonds. Such instruments are generally classified
within Level 1 of the fair value hierarchy.

The following table sets forth, by level, within the fair value hierarchy,
financial assets and liabilities accounted for at fair value under ASC 820 as of September 30, 2009:



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|                   |  |       |        |                                       |   |                                |  |                              |   |  |   |  
|------------------ |  | ----- | ------ | ------------------------------------- | - | ------------------------------ |  | ---------------------------- | - |  | - | -
|(in thousands)     |  | Total |        | QuotedPrices inActiveMarkets(Level 1) |   | OtherObservableInputs(Level 2) |  | Un-observableInputs(Level 3)
|                   |  |       |        |                                      
|Money market funds |  | $     | 32,010 |                                       | $ | 32,010                         |  | $                            |  |  | $ | 
|Corporate bonds    |  |       | 3,607  |                                       |   | 3,607                          |  |                              |  |  |   | 
|                   |  |       |        |                                       |   |                                |  |                              |   |  |   |  
|Total              |  | $     | 35,617 |                                       | $ | 35,617                         |  | $                            |  |  | $ | 
|                   |  |       |        |                                       |   |                                |  |                              |   |  |   |  

Assets measured at fair value on a recurring basis were presented in the balance
sheet as of September 30, 2009 as follows:



|                                 |  |       |        |                                       |   |                                |  |                              |   |  |   |  
|-------------------------------- |  | ----- | ------ | ------------------------------------- | - | ------------------------------ |  | ---------------------------- | - |  | - | -
|(in thousands)                   |  | Total |        | QuotedPrices inActiveMarkets(Level 1) |   | OtherObservableInputs(Level 2) |  | Un-ObservableInputs(Level 3)
|                                 |  |       |        |                                      
|Cash and cash equivalents        |  | $     | 32,010 |                                       | $ | 32,010                         |  | $                            |  |  | $ | 
|Short-term investment securities |  |       | 3,607  |                                       |   | 3,607                          |  |                              |  |  |   | 
|                                 |  |       |        |                                       |   |                                |  |                              |   |  |   |  
|Total assets                     |  | $     | 35,617 |                                       | $ | 35,617                         |  | $                            |  |  | $ | 
|                                 |  |       |        |                                       |   |                                |  |                              |   |  |   |  

The carrying value of other financial instruments, including accounts receivable,
accounts payable, and accrued liabilities approximate fair value due to their short maturities.

6. INCOME TAXES

We recognized income tax expense of $2,612,000 and $110,000 for the nine months ending September 30, 2009 and September 30, 2008.
For 2009, the Company believes, based on current estimates, that the effective annual blended tax rate is approximately 34.2%.

At December 31, 2008, the Company had net operating loss carryforwards (NOLs) for federal tax purposes of approximately $302.4 million, which expire in varying amounts between 2018 and 2025. We have determined that an
ownership change as defined under Section 382 of the Internal Revenue Code of 1986 (IRC), as amended, occurred during 2008. The effect of this ownership change is the imposition of a $457,000 annual limitation on the use of NOL
carryforwards attributable to periods before the change. This annual limitation will result in the expiration of NOL carryforwards before they become available for utilization. Based on the $457,000 annual limitation, the Company anticipates that a
total of approximately $7.8 million of NOL carryforwards will be available for utilization prior to 2025.

In the fourth
quarter of 2008, we recognized a deferred tax benefit of $506,000 related to the anticipated future use of some of our federal net operating loss carryovers. In the future, we may reduce the valuation allowance over our federal net operating loss
carryovers and recognize an additional deferred tax benefit. Management assesses this potential based upon all available evidence, including the last eleven quarters of profitability and forecasts. At the end of the second quarter, management
determined that it was not appropriate to reduce the valuation allowance to recognize additional benefit.

The Company
continues to carry a full valuation allowance on its other deferred tax assets, the majority of which represent net operating loss carry forwards and tax credit carryovers which we generated prior to achieving profitability.

7. COMMITMENTS AND CONTINGENCIES

Under the Development and License Agreement, Trimeris and Roche are obligated to share equally the future development expenses for FUZEON for the United States and Canada.

On November 20, 2007, the Company was informed that Novartis Vaccines and Diagnostics, Inc. (Novartis) had filed suit
against Hoffman-La Roche Inc., Roche Laboratories Inc., Roche Colorado Corp., and F. Hoffman- La Roche Ltd. (collectively the Roche Entities) and Trimeris alleging infringement of Novartis U.S. Patent No. 7,285,271 B1,
entitled Antigenic Composition Comprising an HIV gag or env Polypeptide (the 271 Patent) related to the manufacture, sale and offer for sale of FUZEON. The lawsuit was filed in the Eastern District of Texas (Marshal
Division) (the Court).

The 271 Patent that is the subject of the infringement suit was granted to Novartis
on October 23, 2007. On March 7, 2008, the Company received formal service of the complaint in this case and on May 29, 2008, Roche and Trimeris filed an answer and



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counterclaim requesting relief on several grounds including non-infringement, patent invalidity, unenforceability and double-patenting. Also on May 29, 2008, Roche and Trimeris filed a
motion to transfer venue to the Eastern District of North Carolina or, in the alternative, dismiss Trimeris pursuant to the Federal Rules of Civil Procedure. On July 30, 2008, Novartis filed an answer to the Roche-Trimeris counterclaims. On
August 1, 2008, Roche and Trimeris filed a reply in support of Trimeris motion to transfer. On September 3, 2008, the Court dismissed the Roche-Trimeris motion for transfer of venue without prejudice. On October 10, 2008, Roche
and Trimeris filed a renewed motion to transfer. On February 3, 2009, the Court denied the renewed Roche and Trimeris requests for transfer. On March 3, 2009, Trimeris and Roche filed invalidity contentions with the court. On May 18,
2009, Roche and Trimeris filed motions for summary judgment. On June 12, 2009, Roche and Trimeris filed a motion for reconsideration of the order denying transfer. On August 3, 2009, the Court issued an order denying the Roche and Trimeris
motion for reconsideration of the order denying transfer. On August 25, 2009, Trimeris and Roche filed a petition for a writ of mandamus with the United States Court of Appeals for the Federal Circuit (the Fed. Circuit) to direct
the Court to vacate its order, dated February 3, 2009, denying a transfer of venue to the Eastern District of North Carolina and its order, dated August 3, 2009, denying Roche and Trimeris motion for reconsideration; and to transfer
this case to the United States District Court for the Eastern District of North Carolina. On September 14, 2009, Novartis filed an opposition to the petition for writ of mandamus with the Fed. Circuit. No trial date has been scheduled and the
outcome of this matter cannot be determined at this time. In connection with its suit, Novartis is seeking unspecified money damages, attorneys fees and injunctive relief which, if successful, would prevent Roche and Trimeris from
manufacturing and selling FUZEON.

8. REDUCTION IN WORKFORCE

During November 2006, the Company announced a shift in strategic emphasis and reorganization to focus on FUZEON profitability and research and early stage development. With this shift in strategic
emphasis, the Company reduced its workforce by approximately 25% and recognized expense of $3.2 million for severance and other costs in the fourth quarter of 2006.

During March 2007, as a continued part of the shift in strategic emphasis, the Company again reduced its workforce by approximately 25% and recognized expense of $4.3 million for severance and other costs
in the first quarter of 2007. Of this $4.3 million, $870,000 was related to the acceleration of vesting of restricted stock and is excluded from the table below.

During April 2007, as a continued part of the shift in strategic emphasis, the Company reduced its workforce by approximately 7% and recognized expense of $77,000 for severance and other costs in the
second quarter of 2007.

During December 2007, the Company implemented a reduction in force in connection with a 2008
strategic plan to maximize cash flows from FUZEON, while also advancing TRI-1144 to a value creating milestone. In connection with the strategic plan and as a result of the reduction in force, the Company will no longer staff any research and
development functions. The Company recognized expense of $1.7 million for severance and other costs during the fourth quarter of 2007 related to this 2008 strategic plan.

Following is a summary of activity related to the 2006 and 2007 restructuring accruals (in thousands) that was recorded within accrued compensation:



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|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|----------------------------- |  | ------------------------- | ---- | - | ------------------------- | - | ------ | ----- |  | - | ------ | -
|                              |  | Severance andBenefits2006 |      |   | Severance andBenefits2007 |   |        | Total | 
|                              |  |                           |      |   |                           |   |        |       | 
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Balance at December 31, 2007  |  | $                         | 567  |   |                           | $ | 3,552  |       |  | $ | 4,119  |  
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Adjustments                   |  |                           | (6   | ) |                           |   | (55    | )     |  |   | (61    | )
|Payments                      |  |                           | (152 | ) |                           |   | (1,196 | )     |  |   | (1,348 | )
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Balance at March 31, 2008     |  | $                         | 409  |   |                           | $ | 2,301  |       |  | $ | 2,710  |  
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Adjustments                   |  |                           | 2    |   |                           |   | 36     |       |  |   | 38     |  
|Payments                      |  |                           | (123 | ) |                           |   | (538   | )     |  |   | (661   | )
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Balance at June 30, 2008      |  | $                         | 288  |   |                           | $ | 1,799  |       |  | $ | 2,087  |  
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Adjustments                   |  |                           | 2    |   |                           |   | 12     |       |  |   | 14     |  
|Payments                      |  |                           | (124 | ) |                           |   | (525   | )     |  |   | (649   | )
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Balance at September 30, 2008 |  | $                         | 166  |   |                           | $ | 1,286  |       |  | $ | 1,452  |  
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Adjustments                   |  |                           | 7    |   |                           |   | 108    |       |  |   | 115    |  
|Payments                      |  |                           | (129 | ) |                           |   | (575   | )     |  |   | (704   | )
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Balance at December 31, 2008  |  | $                         | 44   |   |                           | $ | 819    |       |  | $ | 863    |  
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Adjustments                   |  |                           |     |   |                           |   | 7      |       |  |   | 7      |  
|Payments                      |  |                           | (44  | ) |                           |   | (428   | )     |  |   | (472   | )
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Balance at March 31, 2009     |  | $                         |     |   |                           | $ | 398    |       |  | $ | 398    |  
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Adjustments                   |  |                           |     |   |                           |   | 8      |       |  |   | 8      |  
|Payments                      |  |                           |     |   |                           |   | (406   | )     |  |   | (406   | )
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Balance at June 30, 2009      |  | $                         |     |   |                           | $ |       |       |  | $ |       |  
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Adjustments                   |  |                           |     |   |                           |   |       |       |  |   |       |  
|Payments                      |  |                           |     |   |                           |   |       |       |  |   |       |  
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  
|Balance at September 30, 2009 |  | $                         |     |   |                           | $ |       |       |  | $ |       |  
|                              |  |                           |      |   |                           |   |        |       |  |   |        |  

9. SUBSEQUENT EVENTS

Proposed Acquisition by Arigene Co., Ltd.

As described in Note 1, Basis of Presentation, on October 2, 2009, the Company, Arigene and the Purchaser entered into the Merger Agreement pursuant to which Arigene has agreed to acquire all of the
outstanding shares of the Companys common stock through the Tender Offer of $3.60 per share in cash, followed by the Merger to acquire all remaining outstanding shares of Company common stock at the same price per share paid in the Tender
Offer. On October 19, 2009, Arigene and the Purchaser commenced the Tender Offer by filing with the SEC a Tender Offer Statement on Schedule TO and related exhibits, including the offer to purchase, letter of transmittal, and other related
documents. Also on October 19, 2009, the Company filed with the SEC a tender offer Solicitation/Recommendation Statement on Schedule 14D-9.

The consummation of the Tender Offer is subject to a number of conditions, including (i) a majority of outstanding shares of Company common stock having been tendered in response to the Tender Offer,
(ii) the absence of any injunction or act by any governmental agency prohibiting the transaction, (iii) there not having been a material adverse change with respect to the Company, and (iv) other customary conditions. The Tender Offer
is not subject to a financing condition.

The Merger Agreement provides for the payment of a termination fee of $3.2 million
by the Company to Arigene in specified circumstances in connection with the termination of the Merger Agreement. In addition, in specified circumstances in connection with termination of the Merger Agreement, Arigene has agreed pay a $12 million
reverse termination fee to the Company.

On November 12, 2009 the Company announced that Arigene has
requested through counsel that the Company consent to an extension of the expiration date of the Tender Offer.

Under the
Merger Agreement, the Tender Offer is due to expire 12:00 midnight, New York City time, on Monday, November 16, 2009 unless the parties agree otherwise. The Company was informed that, unless the expiration date of the Tender Offer is
extended as requested, Arigene and the Purchaser do not expect to have sufficient funds and available financing to purchase all shares of the Companys common stock validly tendered and not withdrawn as of the expiration of the
offer. While the Company is evaluating Arigenes request to extend the Tender Offer period and amend the Merger Agreement, the Company believes that if



13



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sufficient shares are duly tendered and not withdrawn at the scheduled expiration of the tender, all conditions to Arigenes obligation to consummate the tender will be satisfied and Arigene
will be obligated to purchase such tendered shares.

The Company will also evaluate its rights and remedies under the Merger
Agreement if Arigene does not complete the purchase of shares tendered under the Tender Offer, which include the Companys right to seek the $12 million reverse termination fee payable by Arigene.

Litigation

On October 21, 2009, a purported class action complaint, Robert Haas v. Martin Mattingly, et al. was filed in the United States District Court for the Middle District of North Carolina. This action purports to be on behalf of all
public stockholders of the Company and names as defendants the members of the Companys Board of Directors. The complaint alleges that members of the Companys Board of Directors violated the Securities Exchange Act of 1934, as amended
(the Exchange Act) and SEC rules by failing to disclose in SEC filings material information regarding the Tender Offer. The relief sought in this complaint is, among other things, an injunction against the Tender Offer and dissemination
of a revised Solicitation/Recommendation Statement by the Company. On November 10, 2009, counsel for the plaintiff and the Company executed a Memorandum of Understanding (MOU), pursuant to which, inter alia, the Company would
make additional public disclosures through the filing of an amended Solicitation/Recommendation Statement, and all claims in the action would be dismissed in accordance with the terms of the MOU. The settlement of the action is subject to
negotiation of definitive settlement documentation and approval by the United States District Court for the Middle District of North Carolina and is conditioned upon consummation of the Merger.

Item 2. Managements Discussion and Analysis of Financial Condition and Results of Operations

Executive Summary

Trimeris
is a biopharmaceutical company primarily engaged in the commercialization of a class of antiviral drug treatments called fusion inhibitors. Fusion inhibitors prevent viral fusion, a complex process by which viruses attach to, penetrate and infect
host cells. If a virus cannot enter a host cell, the virus cannot replicate. By inhibiting the fusion process of particular types of viruses, like the Human Immunodeficiency Virus (HIV), our first commercial product, T-20, and our
development-stage compound, TRI-1144, offer a novel mechanism of action to treat and potentially prevent the transmission of HIV.

Trimeris has a worldwide agreement (the Development and License Agreement) with F. Hoffmann-La Roche Ltd., or Roche, to develop and market T-20, marketed as FUZEON, whose generic name is enfuvirtide. FUZEON is
manufactured and distributed by Roche through Roches sales and distribution network throughout the world in countries where regulatory approval has been received. The Company shares gross profits equally from the sale of FUZEON in the United
States and Canada with Roche, and receives a royalty based on net sales of FUZEON outside the United States and Canada.

For the third quarter of 2009, the Company recorded net income of $1.6 million, or $.07 per share, compared to $3.6 million or $0.16 per share, in the third quarter of 2008. This result was primarily
driven by decreased FUZEON® sales, an increase in tax expense, offset in part, by lower operating expenses.

2009 will continue to be a year of transition for Trimeris:



| |  |  | Strategic Alternatives  As discussed in Note 1, Basis of Presentation, and Note 10, Subsequent Events, in the notes to our unaudited condensed
financial statements in Item 1 above, on October 2, 2009 the Company entered into the Merger Agreement with Arigene pursuant to which Arigene has commenced the Tender Offer to purchase all of the outstanding shares of the Company common
stock. If the Tender Offer and subsequent Merger contemplated by the Merger Agreement are consummated, the Company will become a wholly owned subsidiary of Arigene. Pursuant to Arigenes Offer to Purchase, filed with the SEC on October 19,
2009, Arigene has disclosed that it expects that, following the Merger, the business and operations of the Company will be continued substantially as they are currently being conducted. Notwithstanding the foregoing, Arigene will continue to
evaluate the business and operations of the Company during the pendency of the Tender Offer and after the consummation of the Tender Offer and the Merger and will take such actions as it deems appropriate under the circumstances then existing with a
view to optimizing development of the Companys potential in conjunction with Arigenes existing business. Notwithstanding the pendency of the proposed transactions described above, we are actively managing our business as follows:
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Profitability  We are focusing our efforts on maintaining profitability based on FUZEON sales.
| | - |  | -----------------------------------------------------------------------------------------------



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| |  |  | Competition  The market introduction of three new oral agents in late 2007 early 2008 significantly impacted FUZEON sales in 2008 and has
impacted sales in 2009. However, we have noticed that weekly prescription trends (a leading indicator for FUZEON sales) for FUZEON have begun to stabilize. Future FUZEON prescription trends will depend on the further refinement of the optimal
regimen for treatment experienced patients and the role of FUZEON in these regimens.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | FUZEON Sales and Marketing  We continue to believe that our selling and marketing expense in 2009 will be lower than 2008, as we have exercised
again our right under our Development and License Agreement with Roche that prevents Roche from adopting a budget for the marketing of FUZEON above a certain limit without our consent.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Novartis Litigation  We, along with our partner Roche, are working with outside counsel to come to the most expedient and satisfactory resolution
of the patent infringement suit brought by Novartis Vaccines and Diagnostics, Inc.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Cost of Goods Sold  We have exercised our rights under the Development and License Agreement and entered into negotiations with Roche related to
excess capacity charges and cost of goods sold variances for 2008 and overall cost of goods sold for 2009. Accordingly, we cannot accurately determine if cost of goods sold as a percentage of net sales will increase, decrease or remain the same in
the future. Although active discussions are on-going, we cannot be certain when a final resolution will be reached. Depending upon the resolution of our negotiations with Roche, cost of goods sold may increase or decrease in future periods.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

RESULTS OF OPERATIONS

Comparison Of Three Months Ended September 30, 2009 and September 30, 2008

Revenues

The table below presents our revenue sources for the three
months ended September 30, 2009 compared to the three months ended September 30, 2008.



|                                       |  |                                 |       |                    |   |       |  |   |        |  
|-------------------------------------- |  | ------------------------------- | ----- | ------------------ | - | ----- |  | - | ------ | -
|(in thousands)                         |  | Three Months EndedSeptember 30, |       | Increase(Decrease) |  
|                                       |  | 2009                            |       | 2008               |   |       | 
|Milestone revenue                      |  | $                               | 67    |                    | $ | 67    |  | $ |       |  
|Royalty revenue                        |  |                                 | 2,141 |                    |   | 3,373 |  |   | (1,232 | )
|Collaboration income                   |  |                                 | 1,702 |                    |   | 1,756 |  |   | (54    | )
|                                       |  |                                 |       |                    |   |       |  |   |        |  
|                                       |  |                                 |      
|Total revenue and collaboration income |  | $                               | 3,910 |                    | $ | 5,196 |  | $ | (1,286 | )
|                                       |  |                                 |       |                    |   |       |  |   |        |  

Milestone revenue: Total milestone revenue represents the amortization of
achieved milestones under our collaboration with Roche.

The table below presents certain achieved milestones from Roche as of
September 30, 2009. We are recognizing the milestones with remaining unrecognized balances on a straight-line basis through the expiration of certain FUZEON patents.



|               |  |                |       |               |              |                                                  |   |                                                               |  |                          |    |  |              
|-------------- |  | -------------- | ----- | ------------- | ------------ | ------------------------------------------------ | - | ------------------------------------------------------------- |  | ------------------------ | -- |  | -------------
|(in thousands) |  | MilestoneTotal |       | Date Achieved |              | Total RevenueRecognizedThrough September 30,2009 |   | Revenue Recognizedfor the ThreeMonths EndedSeptember 30, 2009 |  | End of RecognitionPeriod
|               |  | $              | 2,500 |               | June    2003 |                                                  | $ | 1,471                                                         |  | $                        | 50 |  | November 2014
|               |  |                | 750   |               | June    2004 |                                                  |   | 409                                                           |  |                          | 17 |  | November 2014
|               |  |                |       |               |              |                                                  |   |                                                               |  |                          |    |  |              
|Total          |  | $              | 3,250 |               |              |                                                  | $ | 1,880                                                         |  | $                        | 67 |  |              
|               |  |                |       |               |              |                                                  |   |                                                               |  |                          |    |  |              

Royalty revenue: Royalty revenue represents the royalty payments earned
from Roche based on total net sales of FUZEON outside the United States and Canada and will continue until all patents covering FUZEON, licensed to Roche, on a country by



15



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country basis have expired. Sales of FUZEON outside the United States and Canada began in June 2003. To calculate the royalty revenue, an 8% distribution charge is deducted from Roches
reported net sales, from which the Company receives a 12% royalty. Royalty revenue decreased for the three months ended September 30, 2009 as compared to the three months ended September 30, 2008 as a result of decreased net sales of
FUZEON outside the U.S. and Canada. Net sales of FUZEON outside the U.S. and Canada for the three months ended September 30, 2009 and September 30, 2008, were $19.4 million and $30.6 million, respectively.

Collaboration income:The table below presents our collaboration income (United States and Canada) for the three months ended
September 30, 2009 compared to the three months ended September 30, 2008. Collaboration income is reported on our condensed Statements of Operations as a component of revenue. Under our Development and License Agreement with Roche, we
share gross profit equally from the sale of FUZEON in the United States and Canada. The sharing of expenses is according to contractual arrangements and is not equal in all cases. FUZEON was launched commercially in March 2003. FUZEON sales have
been significantly impacted by the market introduction of three new oral HIV agents in late 2007 and early 2008.



|                                        |  |                                 |        |   |      |   |        |        |  |   |        |  
|--------------------------------------- |  | ------------------------------- | ------ | - | ---- | - | ------ | ------ |  | - | ------ | -
|(dollars in thousands)                  |  | Three Months EndedSeptember 30, |        |   |      |  
|                                        |  | 2009                            |        |   | 2008 |   |        | Change | 
|                                        |  |                                 |       
|Gross FUZEON sales by Roche             |  | $                               | 13,844 |   |      | $ | 18,077 |        |  | $ | (4,233 | )
|Less sales adjustments                  |  |                                 | (3,467 | ) |      |   | (3,137 | )      |  |   | (330   | )
|Sales adjustments as a % of Gross Sales |  |                                 | 25     | % |      |   | 17     | %      |  |   |        |  
|                                        |  |                                 |        |   |      |   |        |        |  |   |        |  
|                                        |  |                                 |       
|Net sales                               |  |                                 | 10,377 |   |      |   | 14,940 |        |  |   | (4,563 | )
|Cost of goods sold                      |  |                                 | (3,732 | ) |      |   | (5,429 | )      |  |   | 1,697  |  
|Cost of goods sold as a % of Net Sales  |  |                                 | 36     | % |      |   | 36     | %      |  |   |        |  
|                                        |  |                                 |        |   |      |   |        |        |  |   |        |  
|                                        |  |                                 |       
|Gross profit                            |  |                                 | 6,645  |   |      |   | 9,511  |        |  |   | (2,866 | )
|Gross profit as a % of Net Sales        |  |                                 | 64     | % |      |   | 64     | %      |  |   |        |  
|Selling and marketing expenses          |  |                                 | (2,860 | ) |      |   | (5,345 | )      |  |   | 2,485  |  
|Roche development expenses              |  |                                 | (124   | ) |      |   | (410   | )      |  |   | 286    |  
|Other costs                             |  |                                 | (118   | ) |      |   | (790   | )      |  |   | 672    |  
|                                        |  |                                 |        |   |      |   |        |        |  |   |        |  
|Total shared profit                     |  |                                 | 3,543  |   |      |   | 2,966  |        |  |   | 577    |  
|Trimeris share *                        |  |                                 | 1,772  |   |      |   | 1,880  |        |  |   | (108   | )
|Costs exclusive to Trimeris             |  |                                 | (70    | ) |      |   | (124   | )      |  |   | 54     |  
|                                        |  |                                 |        |   |      |   |        |        |  |   |        |  
|                                        |  |                                 |       
|Collaboration income                    |  | $                               | 1,702  |   |      | $ | 1,756  |        |  | $ | (54    | )
|                                        |  |                                 |        |   |      |   |        |        |  |   |        |  



|* | We have exercised our right under our Development and License Agreement with Roche that prevents Roche from adopting a budget for the marketing of FUZEON above a
certain limit without our consent. As a result, the Companys and Roches share of the collaboration income was not equal in the third quarter of 2009 or 2008. Depending on the level of marketing expenses for 2009, our share of the
collaboration profit may continue to be greater than that of Roche.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Gross FUZEON sales by Roche: Revenue
is recognized when Roche ships drug and title and risk of loss passes to wholesalers.

The table below presents the number of
kits shipped to wholesalers in the U.S. and Canada during 2009 and 2008.



|             |  |        |  |       
|------------ |  | ------ |  | ------
|Kits Shipped |  | 2009   |  | 2008  
|Q1           |  | 5,000  |  | 9,600 
|Q2           |  | 4,800  |  | 9,000 
|Q3           |  | 5,500  |  | 7,900 
|Q4           |  |       |  | 9,500 
|             |  |        |  |       
|Total        |  | 15,300 |  | 36,000
|             |  |        |  |       

Sales adjustments: Sales adjustments are recorded by Roche based on their
experience with selling FUZEON. Based on discussions with Roche, we expect sales adjustments for 2009 to fall within a range of 16% to 18% of gross sales for 2009. Sales adjustments for the third quarter of 2009 were higher than expected as a result
of adjustments to reflect actual YTD commercial and government contracting.



16



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Cost of goods sold:We have exercised our rights under the Development and License
Agreement and entered into negotiations with Roche related to excess capacity charges and cost of goods sold variances for 2008 and overall cost of goods sold for 2009. Accordingly, we cannot accurately determine if cost of goods sold as a
percentage of net sales will increase, decrease or remain the same in the future. Although active discussions are on-going, we cannot be certain when a final resolution will be reached. Depending upon the resolution of our negotiations with
Roche, cost of goods sold may increase or decrease in future periods.

During 2008, we recorded a reserve for 2008 excess
capacity charges in the amount of $4.1 million to be shared equally between Roche and Trimeris. In the first quarter of 2009, Roche informed us that actual excess capacity charges for 2008 were $1.9 million. The difference of $2.2 million has been
recorded as a credit to cost of goods sold for the first quarter of 2009. Trimeris share of this credit was $1.1 million. We are disputing with Roche the remainder of the excess capacity charges for 2008. The resolution of this dispute may
result in an additional credit to cost of goods sold for the collaboration in future periods.

Selling and marketing
expenses: We have exercised our right under our Development and License Agreement with Roche that prevents Roche from adopting a budget for the marketing of FUZEON above a certain limit without our consent. As a result, the Companys and
Roches share of the collaboration income was not equal in the third quarter of 2009 or 2008. Depending on the level of marketing expenses for 2009, our share of the collaboration profit may continue to be greater than that of Roche.

Roche development expenses: On January 1, 2009, we adopted Financial Accounting Standards Board, or
(FASB), Accounting Standards Codification (ASC), Topic 808, Collaborative Arrangements, (ASC 808). As a result, all development expenses generated at Roche related to FUZEON are included in the
Companys collaboration income. Prior to January 1, 2009, such amounts were presented in research and development expenses. Prior period amounts have been reclassified to conform to the current periods presentation.

Under the Development and License Agreement, development costs for FUZEON are shared equally with Roche. Development typically includes
certain clinical and pre-clinical studies performed on a clinical candidate compound, as well as post-marketing commitments related to approved drugs. Currently only Roche incurs development costs for FUZEON. Roche holds the Investigational New Drug
(IND) and the New Drug Application (NDA) for FUZEON and is responsible for all regulatory issues, maintenance activities and communications with the FDA. We expect Roche development costs to continue to decline as a majority
of activities have been completed.

Other costs: Other costs for the three months ended September 30, 2009 and
September 30, 2008 include general and administrative costs and distribution charges. The Company is responsible for 50% of these costs under the Development and License Agreement.

Costs exclusive to the Company:Costs exclusive to the Company include license fees, based on net sales of FUZEON, for certain
technology paid to a third party.

Research and Development Expenses

The table below presents our research and development expenses for the three months ended September 30, 2009 compared to the three
months ended September 30, 2008.



|                                        |  |                                 |   |                    |   |     |  |   |      |  
|--------------------------------------- |  | ------------------------------- | - | ------------------ | - | --- |  | - | ---- | -
|(in thousands)                          |  | Three Months EndedSeptember 30, |   | Increase(Decrease) |  
|                                        |  | 2009                            |   | 2008               |   |     | 
|                                        |  |                                 |  
|Total research and development expenses |  | $                               |  |                    | $ | 367 |  | $ | (367 | )
|                                        |  |                                 |   |                    |   |     |  |   |      |  

On January 1, 2009, we adopted ASC 808. As a result, we reclassified $205,000
from research and development expenses in the three months ended September 30, 2008 to collaboration income (see discussion above Collaboration Income).

Total research and development expenses for 2008 primarily related to the preclinical development of the next generation HIV fusion inhibitor peptide TRI-1144 for which the Company has subsequently
discontinued research and development. The Company no longer incurs any research and development expenses.

General and Administrative Expenses

The table below presents our general and
administrative expenses for the three months ended September 30, 2009 compared to the three months ended September 30, 2008.



17



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##### Table of Contents

|                                          |  |                                 |       |                    |   |       |  |   |    
|----------------------------------------- |  | ------------------------------- | ----- | ------------------ | - | ----- |  | - | ---
|(in thousands)                            |  | Three Months EndedSeptember
30, |       | Increase(Decrease)
|                                          |  | 2009                            |       | 2008               |   |      
|                                          |  |                                 |      
|Total general and administrative expenses |  | $                               | 1,669 |                    | $ | 1,519 |  | $ | 150
|                                          |  |                                 |       |                    |   |       |  |   |    

Total general and administrative expenses increased for the three months ended
September 30, 2009 compared to the three months ended September 30, 2008, primarily as a result of activities related to the negotiation of the Merger Agreement with Arigene and the Purchaser.

We expect general and administrative expenses to decrease in 2009, when compared to 2008, as a result of the 2008 strategic plan which
eliminated most general and administrative personnel at Trimeris after June 30, 2008 and reduced operating lease expenses.

Gain on disposal of equipment:The table below presents the gain on the disposal of equipment for the three months ended September 30, 2009 and September 30, 2008.



|                              |  |                                 |   |      |   |                    |  |   |     |  
|----------------------------- |  | ------------------------------- | - | ---- | - | ------------------ |  | - | --- | -
|(in thousands)                |  | Three Months EndedSeptember 30, |   |      |  
|                              |  | 2009                            |   | 2008 |   | Increase(Decrease) | 
|                              |  |                                 |  
|Gain on disposal of equipment |  | $                               |  |      | $ | 10                 |  | $ | (10 | )
|                              |  |                                 |   |      |   |                    |  |   |     |  

The gain on disposal of equipment for 2008 was due to the Company selling property,
furniture and equipment due to the Company relocating its corporate office and shutting down the previous laboratory and office space.

Other Income (Expense):The table below presents our other income (expense) for the three months ended September 30, 2009 and September 30, 2008.



|                           |  |                                 |     |   |      |   |     |                    |  |   |      |  
|-------------------------- |  | ------------------------------- | --- | - | ---- | - | --- | ------------------ |  | - | ---- | -
|(in thousands)             |  | Three Months EndedSeptember 30, |     |   |      |  
|                           |  | 2009                            |     |   | 2008 |   |     | Increase(Decrease) | 
|                           |  |                                 |    
|Interest income            |  | $                               | 59  |   |      | $ | 397 |                    |  | $ | (338 | )
|Gain/(Loss) on investments |  |                                 | 241 |   |      |   | (15 | )                  |  |   | 256  |  
|Interest expense           |  |                                 | (64 | ) |      |   | (96 | )                  |  |   | 32   |  
|                           |  |                                 |     |   |      |   |     |                    |  |   |      |  
|                           |  |                                 |    
|Total other income, net    |  | $                               | 236 |   |      | $ | 286 |                    |  | $ | (50  | )
|                           |  |                                 |     |   |      |   |     |                    |  |   |      |  

Interest income decreased for the three months ended September 30, 2009
primarily due to lower interest rates within the Companys investment portfolios. However, there was a realized gain on investments for the three months ended September 30, 2009 as a result of our redemptions of our investment in Bank of
America Corporations Columbia Strategic Cash Portfolio (the Fund). In December 2007, Columbia Management Group, LLC, the Funds manager, determined that the assets of the Fund had declined in fair value and the Fund would
no longer seek to maintain a net asset value (NAV) of one dollar per share. As a result, the Funds NAV began to fluctuate based on changes in the market values of the assets owned by the Fund. The Fund ceased accepting orders for
new shares and began an orderly liquidation of Fund assets for distribution to its shareholders. During the third quarter of 2009, the Companys investment in this fund was liquidated and as a result, we recorded a realized gain of $241,000
related to this investment.

Interest expense relates to the accretion of the excess marketing expenses recorded on the
balance sheets as Accrued marketing costs. The Company and Roche agreed to limit the Companys actual cash contribution to the FUZEON selling and marketing expenses in 2004 to approximately $11.2 million, even though Roche spent
significantly more on these expenses. If certain cumulative levels of sales for FUZEON in the United States and Canada are achieved, the Companys share of the additional expenses incurred by Roche during 2004 will be payable to Roche beginning
at a future date over several years from that future date. During the fourth



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quarter of 2008, we revised our estimate of the date that payments will begin from 2017 to 2022. During 2004, the Company recorded $15.6 million as part of collaboration loss, which represented
the net present value of the Companys estimated share of the expenses that were in excess of approximately $11.2 million. This amount was determined by taking into account the expected timing and terms of payment under the Development and
License Agreement, discounted at a risk free interest rate. The Company is increasing the liability over time to the expected payment amount. For the three months ended September 30, 2009 and September 30, 2008, the Company increased the
recorded liability by $64,000 and $96,000, respectively, for accretion of interest. The total liability of $18.5 million and $18.3 million at September 30, 2009 and December 31, 2008 is reflected on our condensed balance sheet.

Income Tax Provision

We recognized income tax expense of $833,000 in the third quarter of 2009 compared to an income tax expense of $47,000 in the third quarter of 2008. For 2009, the Company believes, based on current
estimates, that the effective annual blended tax rate is approximately 34.2%.

At December 31, 2008, the Company had net
operating loss carryforwards (NOLs) for federal tax purposes of approximately $302.4 million, which expire in varying amounts between 2018 and 2025. We have determined that an ownership change as defined under Section 382 of the
Internal Revenue Code of 1986 (IRC), as amended, occurred during 2008. The effect of this ownership change is the imposition of a $457,000 annual limitation on the use of NOL carryforwards attributable to periods before the change. This
annual limitation will result in the expiration of NOL carryforwards before they become available for utilization. Based on the $457,000 annual limitation, the Company anticipates that a total of approximately $7.8 million of NOL carryforwards will
be available for utilization prior to 2025.

In the fourth quarter of 2008, we recognized a deferred tax benefit of $506,000
related to the anticipated future use of some of our federal net operating loss carryovers. In the future, we may reduce the valuation allowance over our federal net operating loss carryovers and recognize an additional deferred tax benefit.
Management assesses this potential based upon all available evidence, including the last eleven quarters of profitability and forecasts. At the end of the first quarter, management determined that it was not appropriate to reduce the valuation
allowance to recognize additional benefit.

The company continues to carry a full valuation allowance on its other deferred
tax assets, the majority of which represent net operating loss carry forwards and tax credit carryovers which we generated prior to achieving profitability.

RESULTS OF OPERATIONS

Comparison of Nine Months Ended September 30, 2009 and
September 30, 2008

Revenues

The table below presents our revenue sources for the nine months ended September 30, 2009 compared to the nine months ended
September 30, 2008.



|                                       |  |                                |        |                    |   |        |  |   |        |  
|-------------------------------------- |  | ------------------------------ | ------ | ------------------ | - | ------ |  | - | ------ | -
|(in thousands)                         |  | Nine Months EndedSeptember 30, |        | Increase(Decrease) |  
|                                       |  | 2009                           |        | 2008               |   |        | 
|Milestone revenue                      |  | $                              | 199    |                    | $ | 199    |  | $ |       |  
|Royalty revenue                        |  |                                | 6,251  |                    |   | 8,663  |  |   | (2,412 | )
|Collaboration income                   |  |                                | 5,555  |                    |   | 6,154  |  |   | (599   | )
|                                       |  |                                |        |                    |   |        |  |   |        |  
|                                       |  |                                |       
|Total revenue and collaboration income |  | $                              | 12,005 |                    | $ | 15,016 |  | $ | (3,011 | )
|                                       |  |                                |        |                    |   |        |  |   |        |  

Milestone revenue: Total milestone revenue represents the amortization of
achieved milestones under our collaboration with Roche.

The table below presents certain achieved milestones from Roche as of
September 30, 2009. We are recognizing the milestones with remaining unrecognized balances on a straight-line basis through the expiration of certain FUZEON patents.



19



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##### Table of Contents

|               |  |                |       |               |              |                                                  |   |                                                    |  |                          |     |  |              
|-------------- |  | -------------- | ----- | ------------- | ------------ | ------------------------------------------------ | - | -------------------------------------------------- |  | ------------------------ | --- |  | -------------
|               |  | MilestoneTotal |       | Date Achieved |              | Total RevenueRecognizedThrough September 30,2009 |   | Revenue for the NineMonths EndedSeptember 30, 2009 |  | End of RecognitionPeriod
|(in thousands) |  |                |       |               |              |                                                  |   |                                                    |  |                         
|               |  | $              | 2,500 |               | June    2003 |                                                  | $ | 1,471                                              |  | $                        | 150 |  | November 2014
|               |  |                | 750   |               | June    2004 |                                                  |   | 409                                                |  |                          | 49  |  | November 2014
|               |  |                |       |               |              |                                                  |   |                                                    |  |                          |     |  |              
|Total          |  | $              | 3,250 |               |              |                                                  | $ | 1,880                                              |  | $                        | 199 |  |              
|               |  |                |       |               |              |                                                  |   |                                                    |  |                          |     |  |              

Royalty revenue: Royalty revenue represents the royalty payments earned from
Roche based on total net sales of FUZEON outside the United States and Canada and will continue until all patents covering FUZEON, licensed to Roche, on a country by country basis have expired. Sales of FUZEON outside the United States and Canada
began in June 2003. To calculate the royalty revenue, an 8% distribution charge is deducted from Roches reported net sales, from which the Company receives a 12% royalty. Royalty revenue decreased for the nine months ended September 30,
2009 as compared to the nine months ended September 30 2008, as a result of decreased net sales of FUZEON outside the U.S. and Canada. Net sales of FUZEON outside the U.S. and Canada for the nine months ended September 30, 2009 and
September 30, 2008, were $56.6 million and $78.5 million, respectively.

Collaboration income:The table below
presents our collaboration income (United States and Canada) for the nine months ended September 30, 2009 compared to the nine months ended September 30, 2008. Collaboration income is reported on our Statements of Operations as a component
of revenue. Under our Development and License Agreement with Roche, we share gross profits equally from the sale of FUZEON in the United States and Canada. The sharing of expenses is according to contractual arrangements and is not equal in all
cases. FUZEON was launched commercially in March 2003. FUZEON sales have been significantly impacted by the market introduction of three new oral HIV agents in late 2007 and early 2008.



|                                        |  |                                |        |   |      |   |         |        |  |   |         |  
|--------------------------------------- |  | ------------------------------ | ------ | - | ---- | - | ------- | ------ |  | - | ------- | -
|(dollars in thousands)                  |  | Nine Months EndedSeptember 30, |        |   |      |  
|                                        |  | 2009                           |        |   | 2008 |   |         | Change | 
|                                        |  |                                |       
|Gross FUZEON sales by Roche             |  | $                              | 37,906 |   |      | $ | 58,342  |        |  | $ | (20,436 | )
|Less sales adjustments                  |  |                                | (7,828 | ) |      |   | (10,325 | )      |  |   | 2,497   |  
|Sales adjustments as a % of Gross Sales |  |                                | 21     | % |      |   | 18      | %      |  |   |         |  
|                                        |  |                                |        |   |      |   |         |        |  |   |         |  
|                                        |  |                                |       
|Net sales                               |  |                                | 30,078 |   |      |   | 48,017  |        |  |   | (17,939 | )
|Cost of goods sold                      |  |                                | (8,306 | ) |      |   | (17,649 | )      |  |   | 9,343   |  
|Cost of goods sold as a % of Net Sales  |  |                                | 28     | % |      |   | 37      | %      |  |   |         |  
|                                        |  |                                |        |   |      |   |         |        |  |   |         |  
|                                        |  |                                |       
|Gross profit                            |  |                                | 21,772 |   |      |   | 30,368  |        |  |   | (8,596  | )
|Gross profit as a % of Net Sales        |  |                                | 72     | % |      |   | 63      | %      |  |   |         |  
|Selling and marketing expenses          |  |                                | (8,670 | ) |      |   | (16,129 | )      |  |   | 7,459   |  
|Roche development expenses              |  |                                | (1,187 | ) |      |   | (1,433  | )      |  |   | 246     |  
|Other costs                             |  |                                | (362   | ) |      |   | (2,223  | )      |  |   | 1,861   |  
|                                        |  |                                |        |   |      |   |         |        |  |   |         |  
|Total shared profit                     |  |                                | 11,553 |   |      |   | 10,583  |        |  |   | 970     |  
|Trimeris share *                        |  |                                | 5,776  |   |      |   | 6,590   |        |  |   | (814    | )
|Costs exclusive to Trimeris             |  |                                | (221   | ) |      |   | (436    | )      |  |   | 215     |  
|                                        |  |                                |        |   |      |   |         |        |  |   |         |  
|                                        |  |                                |       
|Collaboration income                    |  | $                              | 5,555  |   |      | $ | 6,154   |        |  | $ | (599    | )
|                                        |  |                                |        |   |      |   |         |        |  |   |         |  



|* | We have exercised our right under our Development and License Agreement with Roche that prevents Roche from adopting a budget for the marketing of FUZEON above a
certain limit without our consent. As a result, the Companys and Roches share of the collaboration income was not equal in the first nine months of 2009 or 2008. Depending on the level of marketing expenses for 2009 our share of the
collaboration profit may continue to be greater than that of Roche.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Gross FUZEON sales by Roche: Revenue
is recognized when Roche ships drug and title and risk of loss passes to wholesalers.



20



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##### Table of Contents

The table below presents the number of kits shipped to wholesalers in the U.S. and Canada
during 2009 and 2008.



|             |  |        |  |       
|------------ |  | ------ |  | ------
|Kits Shipped |  | 2009   |  | 2008  
|Q1           |  | 5,000  |  | 9,600 
|Q2           |  | 4,800  |  | 9,000 
|Q3           |  | 5,500  |  | 7,900 
|Q4           |  |       |  | 9,500 
|             |  |        |  |       
|Total        |  | 15,300 |  | 36,000
|             |  |        |  |       

Sales adjustments: Sales adjustments are recorded by Roche based on their
experience with selling FUZEON. Based on discussions with Roche, we expect sales adjustments for 2009 to fall within a range of 16% to 18% of gross sales for 2009.

Cost of goods sold:We have exercised our rights under the Development and License Agreement and entered into negotiations with Roche related to excess capacity charges and cost of goods sold
variances for 2008 and overall cost of goods sold for 2009. Accordingly, we cannot accurately determine if cost of goods sold as a percentage of net sales will increase, decrease or remain the same in the future. Although active discussions are
on-going, we cannot be certain when a final resolution will be reached. Depending upon the resolution of our negotiations with Roche, cost of goods sold may increase or decrease in future periods.

During 2008, we recorded a reserve for 2008 excess capacity charges in the amount of $4.1 million to be shared equally between Roche and
Trimeris. In the first quarter of 2009, Roche informed us that actual excess capacity charges for 2008 were $1.9 million. The difference of $2.2 million has been recorded as a credit to cost of goods sold for the first quarter of 2009.
Trimeris share of this credit was $1.1 million. We are disputing with Roche the remainder of the excess capacity charges for 2008. The resolution of this dispute may result in an additional credit to cost of goods sold for the collaboration in
future periods.

Selling and marketing expenses: We have exercised our right under our Development and License
Agreement with Roche that prevents Roche from adopting a budget for the marketing of FUZEON above a certain limit without our consent. As a result, the Companys and Roches share of the collaboration income was not equal in the first half
of 2009 or 2008. Depending on the level of marketing expenses for 2009, our share of the collaboration profit may continue to be greater than that of Roche.

Roche development expenses: On January 1, 2009, we adopted ASC 808. As a result all development expenses, generated at Roche, related to FUZEON are included in the Companys collaboration
income. Prior to January 1, 2009, such amounts were presented in research and development expenses. Prior period amounts have been reclassified to conform to the current periods presentation.

Under the Development and License Agreement, development costs for FUZEON are shared equally with Roche. Development typically includes
certain clinical and pre-clinical studies performed on a clinical candidate compound, as well as post-marketing commitments related to approved drugs. Currently only Roche incurs development costs for FUZEON. Roche holds the Investigational New Drug
(IND) and the New Drug Application (NDA) for FUZEON and is responsible for all regulatory issues, maintenance activities and communications with the FDA. We expect Roches development costs to continue to decline as a
majority of activities have been completed.

Other costs: Other costs for the nine months ended September 30, 2009
and September 30, 2008 include general and administrative costs and distribution charges. The Company is responsible for 50% of these costs under the Development and License Agreement.

Costs exclusive to the Company:Costs exclusive to the Company include license fees, based on net sales of FUZEON, for certain
technology paid to a third party.

Research and Development Expenses

The table below presents our research and development expenses for the nine months ended September 30, 2009 compared to the nine months
ended September 30, 2008.



|                                        |  |                   |   |            |   |       |  |   |        |  
|--------------------------------------- |  | ----------------- | - | ---------- | - | ----- |  | - | ------ | -
|                                        |  | Nine Months Ended |   | Increase   |  
|(in thousands)                          |  | September 30,     |   | (Decrease) |  
|                                        |  | 2009              |   | 2008       |   |       | 
|Total research and development expenses |  | $                 |  |            | $ | 2,923 |  | $ | (2,923 | )
|                                        |  |                   |   |            |   |       |  |   |        |  



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##### Table of Contents

On January 1, 2009, we adopted ASC 808. As a result, we reclassified $716,000 from
research and development expenses in the nine months ended September 30, 2008 to collaboration income (see discussion above Collaboration Income).

General and Administrative Expenses

The table below presents our
general and administrative expenses for the nine months ended September 30, 2009 compared to the nine months ended September 30, 2008.



|                                          |  |                   |       |            |   |       |  |   |      |  
|----------------------------------------- |  | ----------------- | ----- | ---------- | - | ----- |  | - | ---- | -
|                                          |  | Nine Months Ended |       | Increase   |  
|(in thousands)                            |  | September 30,     |       | (Decrease) |  
|                                          |  | 2009              |       | 2008       |   |       | 
|                                          |  |                   |      
|Total general and administrative expenses |  | $                 | 4,805 |            | $ | 5,778 |  | $ | (973 | )
|                                          |  |                   |       |            |   |       |  |   |      |  

Total general and administrative expenses: Total general and administrative expenses
decreased for the nine months ended September 30, 2009 compared to the nine months ended September 30, 2008, primarily as a result of decreased rent expenses, employee costs and other expense as a result of reduced headcount and general
business activities offset, in part by increased expenses related to the negotiation of the Merger Agreement with Arigene and the Purchaser.

Gain/(Loss)on disposal of equipment:The table below presents the gain/(loss) on the disposal of equipment for the nine months ended September 30, 2009 and September 30, 2008.



|                                     |  |                                |    |      |          |      |            |  |   |    
|------------------------------------ |  | ------------------------------ | -- | ---- | -------- | ---- | ---------- |  | - | ---
|(in thousands)                       |  | Nine Months EndedSeptember 30, |    |      | Increase
|                                     |  | 2009                           |    | 2008 |          |      | (Decrease)
|                                     |  |                                |   
|Gain/(Loss) on disposal of equipment |  | $                              | 23 |      | $        | (496 | )          |  | $ | 519
|                                     |  |                                |    |      |          |      |            |  |   |    

The gain on disposal of equipment for 2009 is due to the Company selling equipment
that was written off during 2008. The loss on disposal of equipment for 2008 was due to the Company writing off its property, furniture or equipment in relation to relocating its corporate office and shutting down the previous laboratory and office
space.

Other Income (Expense):The table below presents our other income (expense) for the nine months ended
September 30, 2009 and September 30, 2008.



|                           |  |                                |      |   |          |   |       |            |  |   |        |  
|-------------------------- |  | ------------------------------ | ---- | - | -------- | - | ----- | ---------- |  | - | ------ | -
|(in thousands)             |  | Nine Months EndedSeptember 30, |      |   | Increase |  
|                           |  | 2009                           |      |   | 2008     |   |       | (Decrease) | 
|                           |  |                                |     
|Interest income            |  | $                              | 338  |   |          | $ | 1,756 |            |  | $ | (1,418 | )
|Gain/(Loss) on investments |  |                                | 298  |   |          |   | (703  | )          |  |   | 1,001  |  
|Interest expense           |  |                                | (192 | ) |          |   | (285  | )          |  |   | 93     |  
|                           |  |                                |      |   |          |   |       |            |  |   |        |  
|                           |  |                                |     
|Total other income, net    |  | $                              | 444  |   |          | $ | 768   |            |  | $ | (324   | )
|                           |  |                                |      |   |          |   |       |            |  |   |        |  

Interest income decreased for the nine months ended September 30, 2009 primarily
due to decreased interest rates. However, there was a realized gain on investments for the nine months ended September 30, 2009 as a result of our redemptions of our investment in Bank of America Corporations Columbia Strategic Cash
Portfolio (the Fund), which is discussed in more detail above. For the nine months ended September 30, 2009, we recorded a realized gain of $298,000 related to this investment.

Interest expense relates to the accretion of the excess marketing expenses recorded on the balance sheets as Accrued marketing
costs which is discussed in more detail above.



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##### Table of Contents

LIQUIDITY AND CAPITAL RESOURCES

The table below presents our cash flows for the nine months ended September 30, 2009 as compared to the nine months ended
September 30, 2008.



|                                                     |  |                   |        |      |   |         |  
|---------------------------------------------------- |  | ----------------- | ------ | ---- | - | ------- | -
|                                                     |  | Nine Months Ended |       
|(in thousands)                                       |  | September 30,     |       
|                                                     |  | 2009              |        | 2008 |  
|Net cash provided by operating activities            |  | $                 | 4,489  |      | $ | 15,178  |  
|Net cash provided by investing activities            |  |                   | 13,132 |      |   | 10,274  |  
|Net cash used by financing activities                |  |                   |       |      |   | (33,333 | )
|                                                     |  |                   |        |      |   |         |  
|                                                     |  |                  
|Net increase (decrease) in cash and cash equivalents |  |                   | 17,621 |      |   | (7,881  | )
|Cash and cash equivalents, beginning of period       |  |                   | 14,389 |      |   | 32,702  |  
|                                                     |  |                   |        |      |   |         |  
|Cash and cash equivalents, end of period             |  | $                 | 32,010 |      | $ | 24,821  |  
|                                                     |  |                   |        |      |   |         |  

Operating Activities. Since inception, we have financed our operations
primarily through private placements and public offerings of common stock, equipment lease financing and payments under our Development and License Agreement with Roche.

For the nine months ended September 30, 2009, cash provided by operating activities decreased primarily as a result of the following:



| |  |  | decreased payments from Roche as a result of decreased FUZEON sales offset, in part, by lower selling and marketing expenses;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------



| |  |  | decreased operating expenses offset, in part, by increased income tax expense and a $1.8 million payment for the release of future lease obligations
for our prior office and research facility.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

During the remainder of 2009, cash provided by operating
activities will depend on several factors, primarily the sales, cost of sales and commercialization expenses and post-marketing commitments related to the sale of FUZEON (profitability of the collaboration with Roche), and expenses related to the
patent infringement suit brought by Novartis Vaccines and Diagnostics, Inc.

Investing Activities. The amount provided
by investing activities for the nine months ended September 30, 2009 and September 30, 2008 primarily relates to the net maturities/purchases of investment securities available-for-sale. The purchase and maturity of investment securities
available-for-sale was due to the normal maturities of investments.

During the remainder of 2009, cash provided by investing
activities will depend primarily on the net purchases/maturities of investments. We do not expect to purchase any property and equipment in 2009. We expect patent costs in 2009 to be less than 2008.

Financing Activities. The amount used by financing activities for the nine months ended September 30, 2008 was related to the
special dividend paid on June 6, 2008.

On May 8, 2008, the Companys Board of Directors declared a special
cash dividend of $1.50 per share of common stock to stockholders of record on May 22, 2008. The aggregate dividend payment totaled approximately $33.3 million and was paid on June 6, 2008. Subsequent to this event, on December 9,
2008, the Companys Board of Directors approved another special dividend of $1.00 per share of common stock. The aggregate dividend payment totaled approximately $22 million and was paid on December 29, 2008.

Total Cash, Cash Equivalents and Investment Securities Available-for-Sale. As of September 30, 2009, we had $35.6 million in
cash and cash equivalents and investment securities available-for-sale, compared to $31.6 million as of December 31, 2008.

Future Capital Requirements. We have expended, and expect to continue to expend in the future, substantial funds in the following areas:



| |  |  | expenditures for marketing activities related to FUZEON; and
| | - |  | ------------------------------------------------------------



| |  |  | legal costs to defend the patent infringement suit brought by Novartis Vaccines and Diagnostics, Inc.
| | - |  | -----------------------------------------------------------------------------------------------------



23



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##### Table of Contents

Based on expected sales levels of FUZEON, expenses related to the sale of FUZEON, the costs
involved in preparing, filing, processing, maintaining, protecting and enforcing patent claims and other intellectual property rights, and litigation expenses, we expect that our existing capital resources, together with the interest earned thereon,
will be adequate to fund our operating expenses for the foreseeable future.

Contractual Obligations.The following
table summarizes our material contractual commitments at September 30, 2009 for the remainder of 2009 and subsequent years (in thousands):



|                                                             |  |      |   |      |   |      |  |      |   |      |   |            |  |       |   |  |   |        |  |   |       
|------------------------------------------------------------ |  | ---- | - | ---- | - | ---- |  | ---- | - | ---- | - | ---------- |  | ----- | - |  | - | ------ |  | - | ------
|Contractual Obligation*                                      |  | 2009 |   | 2010 |   | 2011 |  | 2012 |   | 2013 |   | Thereafter |  | Total
|Other long-term liabilities reflected on the Balance Sheet * |  | $    |  |      | $ |     |  | $    |  |      | $ |           |  | $     |  |  | $ | 22,204 |  | $ | 22,204
|                                                             |  |      |   |      |   |      |  |      |   |      |   |            |  |       |   |  |   |        |  |   |       
|Total                                                        |  | $    |  |      | $ |     |  | $    |  |      | $ |           |  | $     |  |  | $ | 22,204 |  | $ | 22,204
|                                                             |  |      |   |      |   |      |  |      |   |      |   |            |  |       |   |  |   |        |  |   |       



|* | Our cash contribution to the selling and marketing expenses for FUZEON in 2004 was limited to approximately $11.2 million, even though Roche spent significantly more on
these expenses. If certain cumulative levels of sales for FUZEON in the United States and Canada are achieved, our share of these additional expenses incurred by Roche during 2004 will be payable to Roche beginning at a future date over several
years from that future date. During the fourth quarter of 2008, the Company revised the estimated date that payments will begin from 2017 to 2022. During the year ended December 31, 2004, we reached the $11.2 million limitation for the year. We
recorded a liability of approximately $15.6 million as part of collaboration loss during the year ended December 31, 2004. This represented the net present value of our estimated share of the additional expenses, discounted at a risk-free
interest rate from the expected payment date based on achievement of the sales milestones in the agreement. We are increasing the liability over time to the expected payment amount. During the nine months ended September 30, 2009, we increased
this liability by $192,000. The total liability of $18.5 million at September 30, 2009, is reflected on our condensed balance sheet under the caption Accrued marketing costs. The amount reflected in the above table represents the
undiscounted value of the obligation.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The Company also has contractual obligations to the New York Blood Center
pursuant to a license agreement that requires the Company to make payments based on a contracted term.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements other than an operating lease.

Accounting and Other Matters

In November 2007, the FASB issued ASC Topic 808, Accounting for Collaborative Arrangements. The objective of this Issue is to define collaborative arrangements and to establish reporting requirements for transactions between
participants in a collaborative arrangement and between participants in the arrangement and third parties. This issue is effective for fiscal years beginning after December 15, 2008. We adopted this Issue as of January 1, 2009 and as a
result, reclassified $205,000 and $716,000 from research and development expense into collaboration income for the three and nine months ended September 30, 2008. During the three and nine months ended September 30, 2009, $124,000 and $1.2
million was recorded in collaboration income.

In June 2009, the FASB approved the FASB Accounting Standards
Codification (the Codification) as the single source of authoritative nongovernmental U.S. GAAP to be launched on July 1, 2009. The Codification does not change current U.S. GAAP, but is intended to simplify user access to
all authoritative U.S. GAAP by providing all the authoritative literature related to a particular topic in one place. All existing accounting standard documents will be superseded and all other accounting literature not included in the Codification
will be considered nonauthoritative. The Codification is effective for interim and annual periods ending after September 15, 2009. The Codification is effective for the Company during our interim period ending September 30, 2009 and will
not have an impact on our financial condition or results of operations. We have incorporated the Codification into our references in this Quarterly Report on Form 10-Q.

Net Operating Loss Carryforwards

As of December 31, 2008, we had a
net operating loss carryforward for federal tax purposes of approximately $302.4 million. During the fourth quarter of 2008, we determined that an ownership change under Section 382 of the Internal Revenue Code of 1986, as amended, occurred
during 2008. The effect of this ownership change was the imposition of a $457,000 annual limitation on the use of net operating loss carry forwards, credit carryovers, and built-in loss items attributable to periods before the change. We have
recognized a valuation allowance equal to the deferred tax assets in excess of an amount representing multiple years of Section 382 limitation.



24



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##### Table of Contents

Critical Accounting Policies

Reference is made to Critical Accounting Policies included in our Annual Report on Form 10-K for the year ended December 31,
2008, filed with the SEC on March 13, 2009. As of the date of the filing of this Quarterly Report, the Company has not identified any significant changes to the critical accounting policies discussed in our Annual Report on Form 10-K for the
year ended December 31, 2008.

Cautionary Statements Regarding Forward Looking Statements

This Quarterly Report on Form 10-Q and any attachments may contain forward-looking information about the Companys financial results and
business prospects that involve substantial risks and uncertainties. These statements can be identified by the fact that they use words such as expect, project, intend, plan, believe and
other words and terms of similar meaning. Among the factors that could cause actual results to differ materially are the following: there is uncertainty regarding the success of research and development activities, regulatory authorizations and
product commercializations; we are dependent on third parties for the sale, marketing and distribution of FUZEON; the market for HIV therapeutics is very competitive with regular new product entries that could affect the sale of our products; the
results of our previous clinical trials are not necessarily indicative of any future clinical trials the Company may undertake; and our drug candidates are based upon novel technology, are difficult and expensive to manufacture and may cause
unexpected side effects. For a detailed description of these factors, see the Companys Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 13, 2009 and its subsequent periodic reports filed with the SEC.

Undue reliance should not be placed on these forward-looking statements, which are current only as of the date of this
report. We disclaim any current intention or obligation to update any forward-looking statements or any of the factors that may affect actual results. See Risk Factors, in Part II -Item 1A in this Quarterly Report on Form 10-Q and
in our Annual Report on Form 10-K for the fiscal year ended December 31, 2008 for further discussion regarding some of the reasons that actual results may be materially different from those that we anticipate.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Our exposure to market risk is primarily in our investment portfolio. We do not use derivative financial instruments for speculative or
trading purposes. Substantially all of our contracts are denominated in U.S. dollars; therefore, we have no material foreign currency risk. We have an investment policy that sets minimum credit quality standards for our investments. The policy also
limits the amount of money we can invest in any one issue, issuer or type of instrument.

Fair value is based on actively
quoted market prices and other observable inputs. Our investments are generally most vulnerable to changes in short-term interest rates in the United States. We believe that the risk of material loss of principal due to changes in interest rates is
minimal.

Investment securities, which consist of corporate bonds, are classified as available-for-sale, and are reported at
fair value based on quoted market prices and other observable inputs. The cost of securities sold is determined using the specific identification method when computing realized gains and losses. Unrealized gains and losses are included as a
component of stockholders equity until realized.

In accordance with its investment policy, the Company limits the
amount of credit exposure with any one issuer and the investments are generally not collateralized.

Item 4.
Controls and Procedures

Our Chief Executive Officer and our Chief Financial Officer have reviewed and evaluated the
effectiveness of our disclosure controls and procedures, with the participation of the Companys management, as of September 30, 2009. The term disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e)
under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports filed or submitted under the Exchange Act is recorded, processed, summarized
and reported, within the time periods specified in the SECs rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in
the reports that it files or submits under the Exchange Act is accumulated and communicated to the companys management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding
required disclosure. Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating
the cost-benefit relationship of possible controls and procedures. Based on the evaluation of our disclosure controls and procedures as of September 30, 2009, our Chief Executive Officer and Chief Financial Officer have each concluded that, as
of such date, our disclosure controls and procedures were effective at the reasonable assurance level.



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No change in the Companys internal control over financial reporting (as defined in
Rules 13a-15(f) and 15d-15(f) under the Exchange Act), occurred during the fiscal quarter ended September 30, 2009 that has materially affected, or is reasonably likely to materially affect, the Companys internal control over financial
reporting.



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##### Table of Contents

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

On November 20, 2007, the Company was informed that Novartis Vaccines and Diagnostics, Inc. (Novartis) had filed suit against Hoffman-La Roche Inc., Roche Laboratories Inc., Roche
Colorado Corp., and F. Hoffman- La Roche LTD. (collectively the Roche Entities) and Trimeris alleging infringement of Novartis U.S. Patent No. 7,285,271 B1, entitled Antigenic Composition Comprising an HIV gag or env
Polypeptide (the 271 Patent) related to the manufacture, sale and offer for sale of FUZEON. The lawsuit was filed in the Eastern District of Texas (Marshal Division).

The 271 Patent that is the subject of the infringement suit was granted to Novartis on October 23, 2007. On March 7, 2008,
the Company received formal service of the complaint in this case and on May 29, 2008, Roche and Trimeris filed an answer and counterclaim requesting relief on several grounds including non-infringement, patent invalidity, unenforceability and
double-patenting. Also on May 29, 2008, Roche and Trimeris filed a motion to transfer venue to the Eastern District of North Carolina or, in the alternative, dismiss Trimeris pursuant to the Federal Rules of Civil Procedure. On July 30,
2008, Novartis filed an answer to the Roche-Trimeris counterclaims. On August 1, 2008, Roche and Trimeris filed a reply in support of Trimeris motion to transfer. On September 3, 2008, the Court dismissed the Roche-Trimeris motion
for transfer of venue without prejudice. On October 10, 2008, Roche and Trimeris filed a renewed motion to transfer. On February 3, 2009, the Court denied the renewed Roche and Trimeris requests for transfer. On March 3, 2009,
Trimeris and the Roche filed invalidity contentions with the court. On May 18, 2009, Roche and Trimeris filed motions for summary judgment. On June 12, 2009, Roche and Trimeris filed a motion for reconsideration of the order denying
transfer. On August 3, 2009, the Court issued an order denying the Roche and Trimeris motion for reconsideration of the order denying transfer. On August 25, 2009, Trimeris and Roche filed a petition for a writ of mandamus with the Fed.
Circuit to direct the Court to vacate its order, dated February 3, 2009, denying a transfer of venue to the Eastern District of North Carolina and its order, dated August 3, 2009, denying Roche and Trimeris motion for
reconsideration; and to transfer this case to the United States District Court for the Eastern District of North Carolina. On September 14, 2009, Novartis filed an opposition to the petition for writ of mandamus with the Fed. Circuit. No trial
date has been scheduled and the outcome of this matter cannot be determined at this time. In connection with its suit, Novartis is seeking unspecified money damages, attorneys fees and injunctive relief which, if successful, would prevent
Roche and Trimeris from manufacturing and selling FUZEON.

On October 21, 2009, a purported class action complaint,
Robert Haas v. Martin Mattingly, et al. was filed in the United States District Court for the Middle District of North Carolina. This action purports to be on behalf of all public stockholders of the Company and names as defendants the members of
the Companys Board of Directors. The complaint alleges that members of the Companys Board of Directors violated the Exchange Act and SEC rules by failing to disclose in SEC filings material information regarding the Tender Offer. The
relief sought in this complaint is, among other things, an injunction against the Tender Offer and dissemination of a revised Solicitation/Recommendation Statement by the Company. On November 10, 2009, counsel for the plaintiff and the Company
executed the MOU, pursuant to which, inter alia, the Company would make additional public disclosures through the filing of an amended Solicitation/Recommendation Statement, and all claims in the action would be dismissed in accordance with the
terms of the MOU. The settlement of the action is subject to negotiation of definitive settlement documentation and approval by the United States District Court for the Middle District of North Carolina and is conditioned upon consummation of the
Merger.

Item 1A. Risk Factors

Other than as discussed below, there have been no material changes in our risk factors since the filing of our most recent 10-K. Our business activities involve various elements of risk. We consider the
following issues to be some of the critical risks that should be considered in evaluating our Company and our business:



| |  | We face intense competition in our efforts to increase sales of FUZEON as a commercially successful drug. If we are unable to compete successfully, our
business will suffer.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | If FUZEON does not maintain or increase its market acceptance, our business will be materially harmed.
|- |  | ------------------------------------------------------------------------------------------------------



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| |  | We do not control the manufacturing and production schedule at Roches Boulder facility where FUZEON is manufactured and we cannot ensure that
significant costs associated with scheduling decisions will not be incurred.
|- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | We have been named as defendants in a lawsuit in which Novartis Vaccines and Diagnostics, Inc. has alleged infringement of a patent in connection with
the manufacture and sale of FUZEON. If we cannot resolve this lawsuit on favorable terms and at a reasonable expense, our business may be materially harmed.
|- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | In order to remain profitable we will need to maintain arrangements with third parties for the sale, marketing and distribution of FUZEON or expend
significant resources to develop these capabilities.
|- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | If sufficient amounts of FUZEON, cannot be manufactured on a cost-effective basis, our financial condition and results of operations will be materially
and adversely affected.
|- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | HIV is likely to develop resistance to FUZEON and our future drug candidate, which could adversely affect demand for FUZEON or our drug candidate
TRI-1144 and harm our competitive position.
|- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Our business is based on a novel technology called fusion inhibition, and unexpected side effects or other characteristics of this technology may delay
or otherwise adversely affect the development, regulatory approval and/or commercialization of our drug candidate TRI-1144.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | In order to move forward with the development and commercialization of TRI-1144 we would need to partner with a company that has the requisite
expertise and capabilities related to the development, sale, marketing and distribution of drugs.
|- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | If we cannot maintain commercial manufacturing arrangements with third parties on acceptable terms, or if these third parties do not perform as agreed,
the commercial development of FUZEON or our drug candidate TRI-1144 could be delayed or otherwise materially and adversely affected.
|- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | If Roche does not maintain good manufacturing practices, it could negatively impact our ability to maintain necessary regulatory approvals and
profitably commercialize FUZEON.
|- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | We depend on patents and proprietary rights, which may offer only limited exclusive protection and do not protect against infringement. If we are
unable to protect our patents and proprietary rights, our assets and business could be materially harmed.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | The intellectual property of our competitors or other third parties may prevent us from developing or commercializing our drug candidate TRI-1144.
|- |  | --------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Uncertainties relating to third-party reimbursement and health care reform measures could limit the amount we will be able to charge for our drugs and
adversely affect our results of operations.
|- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | If the testing or use of FUZEON or our drug candidate TRI-1144 harms people, we could face costly and damaging product liability claims far in excess
of our liability and indemnification coverage.
|- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Our quarterly operating results are subject to fluctuations. If our operating results for a particular period deviate from the levels expected by
securities analysts and investors, it could adversely affect the market price of our common stock.
|- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | If we are unable to meet or maintain the standards for maintaining internal control over financial reporting as required by the Sarbanes-Oxley Act of
2002, our stock price could be materially harmed.
|- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | We rely on our collaborative partner Roche to timely deliver important financial information relating to FUZEON sales and expenses. In the event that
this information is inaccurate, incomplete or not timely we will not be able to meet our financial reporting obligations as required by the SEC.
|- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Our charter requires us to indemnify our officers and directors to the fullest extent permitted by law, which obligates us to make substantial payments
and to incur significant insurance-related expenses.
|- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Any additional financing we obtain may result in dilution to our stockholders, restrictions on our operating flexibility
|- |  | ------------------------------------------------------------------------------------------------------------------------



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| | or the transfer of particular rights to technologies or drug candidates.
| | ------------------------------------------------------------------------

The risk factors described in our Annual Report on Form 10-K for the year ended December 31, 2008 (See Item 1A-Risk Factors in the Form 10-K filed by Trimeris on March 13, 2009) have materially changed as follows:

Changes in the method of calculation of FUZEON cost of goods sold under our collaboration agreement with Roche could reduce
our revenue and adversely affect our results of operations.

Recently, we have entered into discussions with Roche
regarding Roches proposed method of calculating cost of goods sold, or COGS, for purposes of our collaboration agreement. Roche has proposed a method of calculating COGS that has not been agreed to by the Company at this time. It is uncertain
whether FUZEON COGS will increase, decrease or remain the same following these discussions. A higher cost of goods sold would result in reduced collaboration income and Company revenue.

If the Arigene Tender Offer and Merger are not successfully completed our stock price could be materially harmed and our ongoing
operations could be adversely impacted.

We have entered into the Merger Agreement with Arigene pursuant to which Arigene
commenced on October 19, 2009, the Tender Offer for all of the shares of our outstanding common stock. Upon completion of the Tender Offer, and the follow-on Merger contemplated by the Merger Agreement, the Company will become a wholly-owned
subsidy of Arigene. Following the announcement on October 2, 2009, that the Company had entered into the Merger Agreement with Arigene our stock price increased, closing that day at $3.53 per share, up approximately 37% over the previous
closing price of $2.57 per share.

On November 12, 2009, we announced that we have been informed by counsel for Arigene
that, unless the expiration date of the Tender Offer is extended, Arigene and the Purchaser do not expect to have sufficient funds and available financing to purchase all shares of our common stock validly tendered and not withdrawn as of the
expiration of the offer at 12:00 midnight New York City time on Monday, November 16. We are evaluating Arigenes request to extend the Tender Offer period. If the Tender Offer and the Merger are not consummated, the trading price of our common
stock could be adversely affected, we will have incurred significant transaction and opportunity costs attempting to consummate the transactions, we may have lost customers and business partners after the announcement of the Merger Agreement, our
business may be subject to disruption, the markets perceptions of our prospects could be adversely affected and our directors and officers will have expended considerable time and effort to consummate the transactions.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

(a) Not applicable.

(b) Not applicable.

(c) Not applicable.

Item 3. Defaults Upon Senior Securities

Not applicable.

Item 4. Submission of Matters to a Vote of Security Holders

None.

Item 5. Other Information

None.

Item 6. Exhibits

(a) Exhibits

The exhibits filed as part of this Quarterly Report on Form 10-Q are listed on the Exhibit Index and such list is
incorporated herein by reference.



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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.



|                  |  |                |  |                                                                     
|----------------- |  | -------------- |  | --------------------------------------------------------------------
|                  |  | Trimeris, Inc.
|                  |  | (Registrant)  
|                  |  |               
|November 12, 2009 |  | By:            |  | /S/    MARTIN A.
MATTINGLY                                          
|                  |  |                |  | Martin A. Mattingly Chief Executive Officer                         
|                  |  |               
|November 12, 2009 |  | By:            |  | /S/    ANDREW L.
GRAHAM                                             
|                  |  |                |  | Andrew L. Graham                                                    
|                  |  |                |  | Chief Financial Officer and Secretary (Principal Accounting Officer)



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EXHIBIT INDEX



|       |  |                                                                                
|------ |  | -------------------------------------------------------------------------------
|Number |  | Description                                                                    
|       | 
|31.1   |  | Rule 13a-14(a) Certification by Martin A. Mattingly as Chief Executive Officer.
|       | 
|31.2   |  | Rule 13a-14(a) Certification by Andrew L. Graham as Chief Financial Officer.   
|       | 
|32.1   |  | Section 1350 Certification by Martin A. Mattingly as Chief Executive Officer.  
|       | 
|32.2   |  | Section 1350 Certification by Andrew L. Graham as Chief Financial Officer.     



31