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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


FORM 6-K

REPORT OF FOREIGN ISSUER

Pursuant to Rule 13a-16 or 15d-16 of
the Securities Exchange Act of 1934

For the month of August 2006

ÆTERNA ZENTARIS INC.

1405, boul. du Parc-Technologique
Québec, Québec
Canada, G1P 4P5
(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F   o   Form 40-F   ý

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934

Yes   o   No   ý

If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-                             .





DOCUMENTS INDEX

Documents Description

1.   Æterna Zentaris' Interim Report — Second Quarter 2006 (Q2)

GRAPHIC

August 11, 2006

To Our Stockholders,

        During the second quarter, we made great strides in advancing our products through the pipeline at all stages as exemplified by Cetrotide®'s marketing approval in Japan, our successful meeting with the FDA leading to the upcoming filing of an IND to move forward into Phase 3 clinical development of cetrorelix in benign prostatic hyperplasia (BPH), as well as the disclosure of positive clinical results in cancer with perifosine and AN-152. Most recently, we disclosed positive Phase 2 results for ozarelix in prostate cancer which will enable us to pursue further clinical trials in this indication. Additionally, we signed a license and collaboration agreement in Japan with Nippon Kayaku for ozarelix in oncology, which is an important validation of the potential for this compound.

Key Developments for the Quarter Ended June 30, 2006


Financial Results for the Quarter Ended June 30, 2006

        As we continue to successfully implement our strategy, we are pleased to maintain a sound financial position, including the ability to leverage our assets as we continue to execute our plan. We are financially poised to continue our investment in R&D, as well as support our growing business.

Developments Subsequent to Quarter End

2


        We are very pleased with all of these financial and drug development achievements which are an integral part of the Company's strategy designed to build a strong and innovative pipeline focused on oncology and endocrinology. We now look forward to continued success as we aggressively advance our lead compounds.

        In closing, on behalf of my colleagues and our Board of Directors, I thank you for your continued interest and support.

Sincerely,

GRAPHIC

Gilles Gagnon, MSc., MBA
President and Chief Executive Officer

3


GRAPHIC

Second Quarter 2006


Management's Discussion and Analysis
of Financial Condition and Results of Operations

        The following analysis provides a review of the Company's results of operations, financial condition and cash flows for the three-month and six-month periods ended June 30, 2006. In this MD&A, the "Company", "we", "us", and "our" mean Æterna Zentaris Inc. and its subsidiaries. This discussion should be read in conjunction with the information contained in Æterna Zentaris Inc.'s interim consolidated financial statements and related notes for the six-month periods ended on June 30, 2006 and 2005. Our consolidated financial statements are reported in United States dollars and have been prepared in accordance with generally accepted accounting principles in Canada, or Canadian GAAP.

Company Overview

        Æterna Zentaris Inc. (TSX: AEZ, NASDAQ: AEZS) is a growing global Biopharmaceutical company focused on oncology and endocrine therapy with proven expertise in drug discovery, development and commercialization.

        As of August 10, 2006, Æterna Zentaris owns 48.26% of Atrium Biotechnologies Inc. (Atrium) (TSX: ATB), a developer, manufacturer and marketer of science-based products for the cosmetics, pharmaceutical, chemical and nutritional industries. Our voting rights in Atrium are 64.69%.

        On a consolidated basis, the Company operates in three segments of operations including: (i) Biopharmaceutical; (ii) Active Ingredients & Specialty Chemicals; and (iii) Health & Nutrition.

        Æterna Zentaris, along with its wholly-owned subsidiaries, Zentaris GmbH and Echelon Biosciences Inc., constitute the Biopharmaceutical segment. Our subsidiary, Atrium, encompasses both the Active Ingredients & Specialty Chemicals and Health & Nutrition segments.

        Atrium's Active Ingredients & Specialty Chemicals segment offers value-added products that include high-value proprietary active ingredients developed, acquired or in-licensed. Furthermore, Atrium's Health & Nutrition segment, develops, manufactures and markets proprietary Health & Nutrition finished products.

4


        Æterna Zentaris' strategy for value creation is based on advancing and expanding its product and development pipeline with a clear focus on oncology and endocrinology. We are committing our resources, our management expertise and depth, leveraging our assets, as well as our strategic alliances with a view to aggressively advancing our product development pipeline with the near-term goal of becoming a late-stage development company. Ultimately, our objective is to become a fully-integrated specialty pharmaceutical company with a strategic focus on oncology, primarily targeting the North American and European markets.

Highlights

Consolidated results-at-a-glance
(expressed in thousands of US dollars)

 
  Quarters ended June 30,
  Six months ended June 30,
Unaudited

  2006
  2005
  2006
  2005
 
  $

  $

  $

  $

Revenues   83,390   60,144   167,867   122,009
R&D, net of tax credits and grants   7,380   6,099   14,281   12,545
Earnings from operations   5,396   3,456   9,828   9,959
Net earnings (loss)   (1,562 ) 13,276   (4,142 ) 13,394

Net earnings (loss) per share

 

 

 

 

 

 

 

 
  Basic   (0.03 ) 0.29   (0.08 ) 0.29
  Diluted   (0.03 ) 0.28   (0.08 ) 0.28

Key Developments in the Second Quarter

        In the second quarter, we achieved several milestones as we remained focused on aggressively advancing our pipeline with successful clinical and promising preclinical activities.

        During the quarter we announced the market approval for Cetrotide® (cetrorelix) in Japan for in vitro fertilization. Cetrotide® (cetrorelix) will be manufactured and marketed in Japan by our partners Nippon Kayaku Co., Ltd. and Shionogi & Co., Ltd. with an expected launch before year-end.

        Additionally, the U.S. FDA reviewed the safety and efficacy data from an extensive Phase 2 program with our lead LHRH antagonist, cetrorelix for the treatment of benign prostatic hyperplasia (BPH) and gave the Company the green light to move into a Phase 3 program. We plan to submit an Investigational New Drug (IND) application to the FDA by year-end for the initiation of a Phase 3 program in BPH.

5


        At the ASCO meeting in June, we, along with our partner, Keryx Biopharmaceuticals announced positive interim Phase 2 data for our lead signal transduction inhibitor, perifosine in advanced renal cell carcinoma. The interim results of a multi-center Phase 2 trial showed a 43% partial response rate.

        Furthermore, we announced positive data from an ongoing Phase 1 trial with AN-152, a cytotoxic conjugate, in patients with gynaecological and breast cancers. The data showed that this compound has a good safety profile with no dose-limiting toxicities reached so far in the selected dose levels.

        With respect to our oral LHRH antagonist peptidomimetic, ZEN-019, we announced positive in vivo data presented at ENDO 2006 in Boston. ZEN-019 demonstrated in vivo activity by suppressing plasma testosterone levels. The data showed that using ZEN-019 with a single, oral administration (20 mg/kg) in rats, led to efficient and revocable suppression of plasma testosterone levels for up to 12 hours. Furthermore, a repeat of the dosing of ZEN-019 increased the suppression time without accumulation in the plasma.

        Finally, we initiated a preclinical research project with University of Montreal with our ghrelin antagonists on the role of ghrelin in the development of obesity.

Critical Accounting Policies and Estimates

        There have been no significant changes in Æterna Zentaris' accounting policies and estimates since December 31, 2005. Please refer to the corresponding section in our 2005 Annual Report for a complete description of our critical accounting policies and estimates. Access to a summary of differences between Canadian and US GAAP is referenced in Note 24 of our annual 2005 financial statements.

New accounting standards

        In January 2005, the CICA issued four new accounting standards in relation with financial instruments: Section 3855 "Financial Instruments — Recognition and Measurement", Section 3865 "Hedges", section 1530 "Comprehensive Income" and Section 3251 "Equity".

        Sections 3855, 3865 and 1530 apply to fiscal years beginning on or after October 1, 2006 and we will adopt them on January 1, 2007. Impacts consistent with the adjustments described in Note 24 of our annual consolidated financial statements are expected.

6


GRAPHIC

Consolidated Results of Operations

        The following table sets forth certain Canadian GAAP consolidated financial data in thousands of United States dollars, except per share data.

CONSOLIDATED RESULTS

 
  Quarters ended
June 30,

  Six months ended
June 30,

 
Unaudited
  2006
  2005
  2006
  2005
 
 
  $
  $
  $
  $
 
Revenues   83,390   60,144   167,867   122,009  
   
 
 
 
 

Operating expenses

 

 

 

 

 

 

 

 

 
Cost of sales   52,619   38,564   109,815   75,727  
Selling, general and administrative   15,517   10,014   29,084   19,949  
R&D costs, net of tax credits and grants   7,380   6,099   14,281   12,545  
Depreciation and amortization   2,478   2,011   4,859   3,829  
   
 
 
 
 
    77,994   56,688   158,039   112,050  
   
 
 
 
 
Earnings from operations   5,396   3,456   9,828   9,959  
Interest income   455   426   875   732  
Interest expense   (2,004 ) (2,668 ) (5,227 ) (4,826 )
Foreign exchange gain (loss)   (295 ) (155 ) (83 ) 53  
   
 
 
 
 
Earnings before the following items   3,552   1,059   5,393   5,918  
Current income taxes   (2,395 ) (2,131 ) (4,391 ) (4,252 )
Future income taxes   630   (65 ) 1,819   (1,162 )
Gain (loss) on dilution of investments   (81 ) 16,393   (135 ) 16,393  
Non-controlling interest   (3,268 ) (1,980 ) (6,828 ) (3,503 )
   
 
 
 
 
Net earnings (loss) for the period   (1,562 ) 13,276   (4,142 ) 13,394  
   
 
 
 
 
Net earnings (loss) per share                  
  Basic   (0.03 ) 0.29   (0.08 ) 0.29  
   
 
 
 
 
  Diluted   (0.03 ) 0.28   (0.08 ) 0.28  
   
 
 
 
 
 

CONSOLIDATED BALANCE SHEET DATA

 
  As at June 30,
2006

  As at December 31,
2005

 
  $
  $
Total assets   435,623   427,511
   
 
Long-term liabilities   228,291   253,806
   
 

7


Consolidated Revenues

        Consolidated revenues for the quarter ended June 30, 2006 totalled $83.4 million compared to $60.1 million for the same period in 2005. Consolidated revenues for the six-month period ended June 30, 2006 totalled $167.9 million compared to $122 million for the same period in 2005. The increase for the quarter ended June 30, 2006 and the six-month period ended June 30, 2006 is attributable to additional revenues related to Atrium's acquisition of Douglas Laboratories in December 2005, combined with Atrium's organic growth. We expect continued period-over-period growth in revenues for the remainder of 2006, due to Atrium's recent acquisitions of Douglas Laboratories and Amisol in May 2006, as well as Atrium's continued internal growth.

Consolidated Operating Expenses

        Consolidated cost of sales increased to $52.6 million for the quarter ended June 30, 2006 compared to $38.6 million for the same period in 2005. For the six-month period ended June 30, 2006, consolidated cost of sales was $109.8 million compared to $75.7 million for the same period in 2005. The increase in the cost of sales for the quarter ended June 30, 2006 and the six-month period ended June 30, 2006 is directly related to sale increases generated by Atrium's acquisition of Douglas Laboratories. We expect that with this recent acquisition, our cost of sales will increase period-over-period for the remainder of 2006.

        Consolidated selling, general and administrative (SG&A) expenses increased to $15.5 million for the quarter ended June 30, 2006 compared to $10 million for the same period in 2005. For the six-month period ended June 30, 2006, consolidated SG&A expenses were $29 million as compared to $19.9 million for the same period in 2005. The increase in SG&A expenses for the quarter ended June 30, 2006 and the six-month period ended June 30, 2006 is primarily due to sequential acquisitions. We expect SG&A expenses to continue to increase period-over-period for the remainder of 2006 due to Atrium's recent acquisition of Douglas Laboratories and Amisol.

        Consolidated R&D expenses, net of tax credits and grants (R&D) increased to $7.4 million for the quarter ended June 30, 2006 compared to $6.1 million for the same period in 2005. For the six-month period ended June 30, 2006, R&D expenses also increased by $1.8 million, reaching $14.3 million from $12.5 million for the same period in 2005. The increase for the quarter ended June 30, 2006 and for the six-month period ended June 30, 2006 is attributable to additional investments in cetrorelix, ozarelix and perifosine, as well as further advancement of preclinical development programs. Since most of the R&D expenses are payable in euros, we were positively affected by a 4% decrease of the euro in comparison with the US dollar during the first six months of 2006.

8


        We expect R&D expenses to increase period-over-period for the remainder of 2006 primarily due to the initiation of our expected late-stage clinical development program for cetrorelix in benign prostatic hyperplasia (BPH), the continued clinical advancement of ozarelix in prostate cancer and BPH, as well as of perifosine in oncology and other earlier-stage development product candidates.

        Consolidated earnings from operations increased to $5.4 million for the quarter ended June 30, 2006 compared to $3.5 million for the same period in 2005, mostly due to additional sales generated by recently acquired Douglas Laboratories. For the six-month period ended June 30, 2006, consolidated earnings from operations decreased by $0.2 million, from $10 million for the same period in 2005 to $9.8 million in 2006. This decrease is principally due to additional investments in R&D and reduced license revenues within our Biopharmaceutical segment, partly offset by additional earnings generated by Atrium's accretive acquisition of Douglas Laboratories, as well as Atrium's organic growth.

        Consolidated interest expense for the quarter ended June 30, 2006 was $2 million compared to $2.7 million for the same period in 2005. This decrease is primarily due to the conversion, during the first quarter of 2006, of the convertible term loans into common shares. For the six-month period ended June 2006, consolidated interest expense was $5.2 million compared to $4.8 million for the same period in 2005. This increase is mainly related to Atrium's increased long-term debt related to business acquisitions.

        Due to the conversion of the convertible term loans in the first quarter of 2006 combined with the repayment of Atrium's existing long-term debt, we expect interest expense to be lower period-over-period for the remainder of 2006.

        Consolidated income tax expense for the quarter ended June 30, 2006 was $1.8 million compared to $2.2 million for the same period in 2005. For the six-month period ended June 30, 2006, consolidated income tax expense was $2.6 million compared to $5.4 million for the same period in 2005. The decrease for the six-month period ended June 30, 2006 is related to the decrease in taxable income of one of our subsidiaries in the Biopharmaceutical segment.

        For our Canadian operations, within the Biopharmaceutical segment, we established a valuation allowance to reduce future income tax assets as it is, at this time, unlikely that some or all of the future income tax assets will be realized.

        Consolidated non-controlling interest for the quarter ended June 30, 2006 was $3.3 million compared to $2 million for the same period in 2005. For the six-month period ended June 30, 2006, consolidated non-controlling interest was $6.8 million compared to $3.5 million for the same period in 2005. Non-controlling interest consists of minority interest in Atrium. The period-over-period increase is directly attributable to the corresponding increase in Atrium's net earnings. We expect non-controlling interest to increase in 2006 due to the decrease in our interest in Atrium following the issuance of shares by Atrium mainly related to the closing of its initial public offering in 2005 and the acquisition of Douglas Laboratories.

9


        Consolidated net loss for the quarter ended June 30, 2006 was $1.6 million or $0.03 per basic and diluted share. In the corresponding period in 2005, consolidated net earnings were $13.3 million or $0.28 per diluted share. Without taking into account a non-cash and non-recurring gain on dilution of investments of $16.4 million recorded in 2005 following Atrium's IPO, we would have recorded a consolidated net loss of $3.1 million or $0.07 per basic and diluted share for the quarter ended June 30, 2005. This $1.5 million decrease in the quarter ended June 30, 2006 compared to the same period in 2005 is mainly attributable to Atrium's increased net earnings for an amount of $1.1 million combined with the reduction of the operating loss of the Biopharmaceutical segment. For the six-month period ended June 30, 2006, the consolidated net loss was $4.1 million or $0.08 per basic and diluted share compared to consolidated net earnings amounting to $13.4 million or $0.29 and $0.28 per basic and diluted share respectively for the same period in 2005, which is inclusive of the gain on dilution of investments of $16.4 million as mentioned above.

        The weighted average number of shares outstanding used to calculate the basic and diluted net loss per share for the three-month period ended June 30, 2006 was 52.7 million shares as compared to 46.1 million shares for the same period in 2005. This increase reflects the issuance of common shares following the conversion of the convertible term loans and the exercise of stock options.

Total Consolidated Assets

        Total consolidated assets amounted to $435.6 million as at June 30, 2006, compared to $427.5 million as at December 31, 2005.

10


Biopharmaceutical Segment Results
(expressed in thousands of US dollars)

 
  Quarters ended
June 30,

  Six months ended
June 30,

 
Unaudited

 
  2006
  2005
  2006
  2005
 
 
  $
  $
  $
  $
 
Revenues                  
  Sales and royalties   5,228   5,381   11,803   12,279  
  License fees   4,155   4,779   6,328   11,628  
   
 
 
 
 
    9,383   10,160   18,131   23,907  
   
 
 
 
 
R&D expense, net of tax credits and grants   7,262   6,081   14,066   12,431  
   
 
 
 
 
Loss from operations   (5,451 ) (3,371 ) (11,556 ) (3,236 )
   
 
 
 
 

        Revenues of the Biopharmaceutical segment are derived from sales and royalties and from license fees. Sales are derived from Impavido® (miltefosine), manufacturing of Cetrotide® (cetrorelix), reagents and active pharmaceutical ingredients. Royalties are derived from Cetrotide® (cetrorelix) actually sold by Serono in reproductive health assistance for in vitro fertilization. Furthermore, license fees are derived from non-periodic milestone payments, R&D contract fees and amortization of upfront payments received to date from our licensing partners.

        Revenues for the quarter ended June 30, 2006 totalled $9.4 million compared to $10.2 million for the same period in 2005. For the six-month period ended June 30, 2006, revenues totalled $18.1 million compared to $23.9 million for the same period in 2005. The revenue decrease for the quarter ended June 30, 2006 and the six-month period ended June 30, 2006 is mainly attributable to a decrease in license revenues from our collaboration with Solvay Pharmaceuticals, partly offset by a milestone payment received from our Japanese partners related to the approval of Cetrotide® for in vitro fertilization in Japan. Furthermore, since most of the revenues in the Biopharmaceutical segment were generated in euros, we were adversely affected during the first six months of 2006 by a 4% decrease of the euro in comparison with the US dollar.

        R&D expenses, net of tax credits and grants for the quarter ended June 30, 2006 were $7.3 million compared to $6.1 million for the same period in 2005. For the six-month period ended June 30, 2006, R&D expenses were $14.1 million, compared to $12.4 million for the same period in 2005. The increase between the second quarter of 2005 and 2006 is attributable to additional investments on cetrorelix, ozarelix and perifosine, as well as positive advancement of preclinical products, including tubulin inhibitors. While most of the R&D expenses were payable in euros, we were positively affected during the first six months of 2006 by a 4% decrease of the euro in comparison with the US dollar.

11


        We expect R&D expenses to increase period-over-period for the remainder of 2006 primarily due to the initiation of our expected late-stage clinical program for cetrorelix in benign prostatic hyperplasia (BPH), the continued clinical advancement of ozarelix in prostate cancer and BPH, as well as the advancement of perifosine in oncology and other earlier-stage development candidates.

        Loss from operations for the quarter ended June 30, 2006 was $5.5 million compared to $3.4 million for the same period in 2005. For the six-month period ended June 30, 2006, the loss from operations was $11.6 million compared to $3.2 million for the same period in 2005. The increase in loss from operations for the quarter and the six-month period ended June 30, 2006 is principally due to additional R&D investments and reduced license revenues from our collaboration with Solvay Pharmaceuticals.

Active Ingredients & Specialty Chemicals Segment Results
(expressed in thousands of US dollars)

 
  Quarters ended
June 30,

  Six months ended
June 30,

Unaudited

  2006
  2005
  2006
  2005
 
  $
  $
  $
  $
Revenues   44,599   42,870   92,729   83,614
Earnings from operations   3,789   3,680   7,656   7,414

        Revenues from the Active Ingredients & Specialty Chemicals Segment for the quarter ended June 30, 2006 were $44.6 million, representing an increase of 4% in revenues of $42.9 million for the same period in 2005. For the six-month period ended June 30, 2006, revenues for this segment were $92.7 million compared to $83.6 million for the same period in 2005, an increase of 10,9%. This increase is attributable essentially to the acquisition of MultiChem on January 24, 2005 and to the acquisition of Amisol during the quarter ended June 30, 2006.

        Earnings from operations for the quarter ended June 30, 2006 were $3.8 million, compared to $3.7 million for the same period in 2005. For the six-month period ended June 30, 2006, earnings from operations were $7.7 million compared to $7.4 million for the same period in 2005, an increase of $0.3 million or 4.1%. This increase is attributable essentially to an increased contribution from proprietary products and to the acquisition of Amisol.

12


Health & Nutrition Segment Results
(expressed in thousands of US dollars)

 
  Quarters ended
June 30,

  Six months ended
June 30,

Unaudited

  2006
  2005
  2006
  2005
 
  $
  $
  $
  $
Revenues   29,684   7,475   57,563   14,882
Earnings from operations   7,058   3,147   13,728   5,781

        Revenues from the Health & Nutrition Segment for the quarter ended June 30, 2006 were $29.7 million compared to $7.5 million in the same quarter in 2005, an increase of $22.2 million or 297.1%. For the six-month period ended June 30, 2006, revenues were $57.6 million compared to $14.9 million in 2005, an increase of $42.7 million or 286.8%. This increase came primarily from the acquisition of Douglas Laboratories in December 2005 and from organic growth.

        Earnings from operations for the quarter ended ended June 30, 2006 were $7.1 million, representing an increase of $4.0 million or 129% over the same period last year where the earnings from operations were $3.1 million. For the six-month period ended June 30, 2006, earnings from operations were $13.7 million, representing an increase of $7.9 million or 136.2% over the same period last year where the earnings from operations were $5.8 million. Most of this increase came from the acquisition of Douglas Laboratories, synergies realized from this acquisition, and organic growth.

Liquidity, Cash Flows and Capital Resources

        Our operations and capital expenditures are mainly financed through cash flows from operating activities, the use of our liquidity, as well as the issuance of debt and common shares.

        Our consolidated cash and short-term position reached $47 million as of June 30, 2006, compared to $52.7 million as of December 31, 2005. More than $27 million was dedicated to our Biopharmaceutical segment as of June 30, 2006. We believe that these liquidities combined with the Atrium credit facility and the cash flows from operations will be adequate to meet operating cash requirements for the foreseeable future. However, possible additional operating losses and/or possible investments in the acquisition of complementary businesses or products may require additional financing.

        The variation of our liquidity by activities is explained below on a consolidated basis.

13


Operating Activities

        Cash flows generated by our operating activities were $11.8 million for the quarter ended June 30, 2006. During the same period in 2005, $3.5 million were generated by our operating activities. This cash flow increase is primarily due to the decrease in accounts receivable, offset by an increase in accounts payable related to specific transactions timing. Cash flows from operating activities before changes in non-cash operating working capital items were $3.0 million for the quarter ended June 30, 2006 compared to $2.2 million in the same period in 2005. This increase is mostly attributable to additional revenues from accretive acquisitions made by Atrium during 2005, partly offset by increased R&D investments and lower license revenues in the Biopharmaceutical segment. For the six-month period ended June 30, 2006, cash flows generated by our operating activities were $8.5 million as compared to $8.7 million for the same period in 2005.

Financing Activities

        For the quarter ended June 30, 2006, cash flows used in financing activities were $5.8 million and were mostly for debt reimbursement. The debt increase during this quarter was related to the acquisition of Amisol. During the same quarter of 2005, the decrease in cash flows from financing activities mainly came from the balance of purchase price paid for the acquisition of MultiChem and from the net amount of cash flows generated from Atrium's IPO, net of the reimbursement of a part of its long-term debt. For the six-month period ended June 30, 2006, cash flows used for financing activities were used for a debt reimbursement of $9 million offset by a debt increase for the acquisition of Amisol and cash received from the exercise of Atrium's options.

Investing Activities

        Cash flows used in investing activities (excluding the change in short-term investments) amounted to $7.8 million for the three-month period ended June 30, 2006, mainly attributed to the Amisol acquisition and to the purchase of property, plant and equipment. During the six-month period ended June 30, 2006, cash flows used in investing activities (excluding the change in short-term investments) amounted to $9.5 million for the same reason mentioned above. For the three and six-month periods ended June 30, 2005, cash flows used in investing activities (excluding the change in short-term investments) amounted to $1.6 million and $20.3 million respectively, mainly attributed to the acquisition of MultiChem and a long-term investment.

Contractual obligations

        There has been no significant change in contractual obligations and commercial commitments facing Æterna Zentaris, as described in the Company's 2005 annual MD&A.

14


Outstanding Share Data

        As of August 10, 2006, there were 53,160,970 common shares issued and outstanding and there were 3,554,092 stock options outstanding.

Quarterly Summary Financial Information
(expressed in thousands of US dollars, except per share data)

 
  Quarters ended
 
Unaudited

  June 30,
2006

  March 31,
2006

  December 31,
2005

  September 30,
2005

 
 
  $

  $

  $

  $

 
Revenues   83,390   84,477   72,501   52,876  
Earnings from operations   5,396   4,432   3,467   986  
Net earnings (loss)   (1,562 ) (2,580 ) 936   (3,759 )
Net earnings (loss) per share                  
  Basic   (0.03 ) (0.05 ) 0.02   (0.08 )
  Diluted   (0.03 ) (0.05 ) 0.02   (0.08 )
 
 
  Quarters ended
 
 
  June 30,
2005

  March 31,
2005

  December 31,
2004

  September 30,
2004

 
 
  $

  $

  $

  $

 
Revenues   60,144   61,865   43,891   42,457  
Earnings from operations   3,456   6,503   914   4,239  
Net earnings (loss)   13,276   118   (2,003 ) (1,510 )
Net earnings (loss) per share                  
  Basic   0.29     (0.04 ) (0.03 )
  Diluted   0.28     (0.04 ) (0.03 )

15


Development subsequent to the end of second quarter

        On August 2, 2006, we announced positive Phase 2 results for our fourth generation luteinizing hormone-releasing hormone (LHRH) antagonist, ozarelix (D-63153), in hormone-dependent inoperable prostate cancer. The study achieved its primary end-point of defining a tolerable dosage regimen that would ensure continuous suppression of testosterone at castration level for a three-month test period. An important secondary efficacy end-point of the study aimed at assessing tumour response as determined by a 50% or greater reduction of serum PSA levels, compared to baseline, was also achieved. These results confirm the mechanism of action of our LHRH antagonist approach and the potential effectiveness of ozarelix to achieve sustained suppression of sexual hormones at castration levels and, consequently, could allow for the treatment of hormone-dependent cancers. Now that we have a suitable dosage regimen of ozarelix for the potential treatment of prostate cancer, we are pleased to further advance the clinical development of ozarelix in this indication with a European Phase 2b program.

        We also announced on August 3, 2006 that we entered into a licensing and collaboration agreement with Nippon Kayaku for ozarelix. Under the terms of the agreement, we granted Nippon Kayaku, an exclusive license to develop and market ozarelix for all potential oncological indications in Japan. In return, we received an upfront payment at signature, and are eligible to receive payments upon achievement of certain development and regulatory milestones, in addition to low double-digit royalties on potential net sales. We retained exclusive rights in oncology for the rest of world, except for North America, Mexico and India where the rights are held by Spectrum Pharmaceuticals Inc.

Outlook for the remainder of 2006

Biopharmaceutical Segment

        We expect Cetrotide® (cetrorelix) to continue to generate significant royalties.

        As part of our growth strategy, we intend to continue to pursue accretive strategic alliances for selected products from our extensive pipeline.

        We expect to benefit from the support of our existing partners and remain focused on and committed to advancing our pipeline.

        We expect R&D expenses to continue to increase in the next quarters of 2006 primarily due to the initiation of our expected late-stage clinical development program for cetrorelix in benign prostatic hyperplasia (BPH), the continued clinical advancement of ozarelix and perifosine, as well as emphasis on clinical development on certain other product candidates at an earlier development stage.

16


        We believe that with revenues generated by our marketed products, our cash level and our product portfolio, as well as our assets, we remain in a solid financial position to continue to advance our product development pipeline, while focusing on our lead product candidates in oncology and endocrinology.

Active Ingredients & Specialty Chemicals, as well as Health & Nutrition Segments

        Successful integration of recently acquired companies and improved internal growth will be the main focus of these segments for the remainder of 2006. Additionally, Atrium also intends to pursue its acquisition strategy.

Financial and Other Instruments

Foreign Currency Risk

        Since the Company operates on an international scale, it is exposed to currency risks as a result of potential exchange rate fluctuations. For the six-month period ended June 30, 2006, there were no significant operations using forward-exchange contracts and no significant forward-exchange contract is outstanding as of today.

Credit Risk

        Financial instruments, which potentially subject the Company to concentrations of credit risk, consist primarily of cash and cash equivalents, short-term investments and accounts receivable. Cash and cash equivalents are maintained with high-credit quality financial institutions. Short-term investments consist primarily of bonds issued by high-credit quality corporations and institutions. Consequently, management considers the risk of non-performance related to cash and cash equivalents and investments to be minimal.

        Generally, the Company does not require collateral or other security from customers for trade accounts receivable; however, credit is extended following an evaluation of creditworthiness. In addition, the Company performs ongoing credit reviews of all its customers and establishes an allowance for doubtful accounts when accounts are determined to be uncollectible.

Interest Rate Risk

        We are exposed to market risk relating to changes in interest rates with regard to our short-term investments and Atrium's revolving credit facility which bears interest at floating rate. To mitigate this risk, $50 million of these borrowings were swapped to a three-year fixed rate. As at June 30, 2006, our long-term debts amount to $38 million which, in effect, bear interest at floating rates.

17


Related Party Transactions and Off-Balance Sheet Arrangements

        There were no related party transactions included in the financial statements, except for the acquisition of a patent from a senior officer, as disclosed in note 5 of the interim financial statements, and no off-balance sheet arrangements. As of June 30, 2006, we did not have interests in any variable interest entities.

Risk Factors and Uncertainties

        There has been no significant change in the risk factors and uncertainties facing Æterna Zentaris, as described in the Company's 2005 annual MD&A.

Continuous disclosure

        The Company is a reporting issuer under the securities legislation of all of the provinces of Canada and is registered in the United States and it is, therefore, required to file continuous disclosure documents such as interim and annual financial statements, a proxy circular, an annual information form, material change reports and press releases with such securities regulatory authorities. Copies of these documents may be obtained free of charge on request from the office of the Secretary of the Company or through the Internet at the following addresses: www.aeternazentaris.com, www.sedar.com and www.sec.gov/edgar.shtml.

Forward-Looking Statements

        This document contains forward-looking statements, which reflect the Company's current expectations regarding future events. Forward-looking statements may include words such as anticipate, believe, could, expect, goal, guidance, intend, may, objective, outlook, plan, seek, should, strive, target and will.

        The forward-looking statements involve risks and uncertainties. Results or performances may differ significantly from expectations. For example, the results of current clinical trials cannot be foreseen, nor can changes in policy or actions taken by such regulatory authorities as the US Food and Drug Administration and the Therapeutic Products Directorate of Health Canada, or any other organization responsible for enforcing regulations in the pharmaceutical industry.

18


        Given these uncertainties and risk factors, readers are cautioned not to place undue reliance on such forward-looking statements. We disclaim any obligation to update any such factors or to publicly announce the result of any revisions to any of the forward-looking statements contained herein to reflect future results, events or developments.

On behalf of management,

GRAPHIC

Dennis Turpin, CA
Vice President and Chief Financial Officer
August 11, 2006

19


ÆTERNA ZENTARIS INC.
INTERIM CONSOLIDATED BALANCE SHEETS
(expressed in thousands of US dollars)

Unaudited
  As at
June 30,
2006

  As at
December 31,
2005

 
 
  $

  $

 
ASSETS          
Current assets          
Cash and cash equivalents   27,895   27,267  
Short-term investments   19,146   25,438  
Accounts receivable          
  Trade   60,211   61,385  
  Other   3,080   3,846  
Income taxes recoverable   4,492   1,973  
Inventory   36,426   37,258  
Prepaid expenses   4,168   3,791  
Future income tax assets   2,801   2,718  
   
 
 
    158,219   163,676  

Property, plant and equipment

 

20,578

 

19,916

 
Deferred charges and other long-term assets   4,348   4,355  
Intangible assets   114,337   109,380  
Goodwill   125,143   119,169  
Future income tax assets   12,998   11,015  
   
 
 
    435,623   427,511  
   
 
 

LIABILITIES

 

 

 

 

 
Current liabilities          
Accounts payable and accrued liabilities   45,911   53,162  
Income taxes   9,052   5,426  
Balance of purchase price   1,292    
Deferred revenues   5,348   4,796  
Current portion of long-term debt   775   790  
   
 
 
    62,378   64,174  

Deferred revenues

 

9,388

 

11,087

 
Convertible term loans (note 4)     28,440  
Long-term debt   100,706   107,303  
Employee future benefits (note 5)   8,484   7,661  
Future income tax liabilities   36,551   34,784  
Non-controlling interest   74,760   64,531  
   
 
 
    292,267   317,980  
   
 
 

SHAREHOLDERS' EQUITY

 

 

 

 

 
Share capital (notes 4 and 6)   168,424   130,344  
Other Capital   5,227   10,474  
Deficit   (47,646 ) (43,224 )
Cumulative translation adjustment   17,351   11,937  
   
 
 
    143,356   109,531  
   
 
 
    435,623   427,511  
   
 
 

The accompanying notes are an integral part of these interim consolidated financial statements.

Approved by the Board of Directors

GRAPHIC GRAPHIC

Éric Dupont, PhD
Director

Gérard Limoges, FCA
Director

20


ÆTERNA ZENTARIS INC.
INTERIM CONSOLIDATED STATEMENTS OF OPERATIONS
For the periods ended June 30, 2006 and 2005

(expressed in thousands of US dollars, except share and per share data)

 
  Quarters ended June 30,
  Six months ended June 30,
 
Unaudited
  2006
  2005
  2006
  2005
 
 
  $

  $

  $

  $

 
Revenues   83,390   60,144   167,867   122,009  
   
 
 
 
 

Operating expenses

 

 

 

 

 

 

 

 

 
Cost of sales   52,619   38,564   109,815   75,727  
Selling, general and administrative   15,517   10,014   29,084   19,949  
Research and development costs   7,501   6,269   14,428   12,850  
R&D tax credits and grants   (121 ) (170 ) (147 ) (305 )
Depreciation and amortization                  
  Property, plant and equipment   865   605   1,683   1,169  
  Intangible assets   1,613   1,406   3,176   2,660  
   
 
 
 
 
    77,994   56,688   158,039   112,050  
   
 
 
 
 
Earnings from operations   5,396   3,456   9,828   9,959  

Other revenues (expenses)

 

 

 

 

 

 

 

 

 
Interest income   455   426   875   732  
Interest expense   (2,004 ) (2,668 ) (5,227 ) (4,826 )
Foreign exchange gain (loss)   (295 ) (155 ) (83 ) 53  
   
 
 
 
 
Earnings before income taxes   3,552   1,059   5,393   5,918  
   
 
 
 
 

Income tax expense

 

 

 

 

 

 

 

 

 
Current   (2,395 ) (2,131 ) (4,391 ) (4,252 )
Future   630   (65 ) 1,819   (1,162 )
   
 
 
 
 
    (1,765 ) (2,196 ) (2,572 ) (5,414 )
   
 
 
 
 
    1,787   (1,137 ) 2,821   504  
Gain (loss) on dilution of investments   (81 ) 16,393   (135 ) 16,393  
Non-controlling interest   (3,268 ) (1,980 ) (6,828 ) (3,503 )
   
 
 
 
 
Net earnings (loss) for the period   (1,562 ) 13,276   (4,142 ) 13,394  
   
 
 
 
 

Net earnings (loss) per share

 

 

 

 

 

 

 

 

 
Basic   (0.03 ) 0.29   (0.08 ) 0.29  
   
 
 
 
 
Diluted   (0.03 ) 0.28   (0.08 ) 0.28  
   
 
 
 
 

Weighted average number of shares outstanding (note 7)

 

 

 

 

 

 

 

 

 
Basic   52,682,969   46,139,814   52,098,582   46,139,814  
   
 
 
 
 
Diluted   53,261,928   46,448,125   52,651,808   46,506,728  
   
 
 
 
 

INTERIM CONSOLIDATED STATEMENTS OF DEFICIT
For the periods ended June 30, 2006 and 2005

(expressed in thousands of US dollars)

 
  Six months ended June 30,
 
Unaudited
  2006
  2005
 
 
  $

  $

 
Balance — Beginning of period   43,224   53,795  
Net loss (earnings) for the period   4,142   (13,394 )
Loss on settlement of convertible term loans (note 4)   280    
   
 
 
Balance — End of period   47,646   40,401  
   
 
 

The accompanying notes are an integral part of these interim consolidated financial statements.

21


ÆTERNA ZENTARIS INC.
INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS
For the periods ended June 30, 2006 and 2005

(expressed in thousands of US dollars)

 
  Quarters ended June 30,
  Six months ended June 30,
 
Unaudited
  2006
  2005
  2006
  2005
 
 
  $

  $

  $

  $

 
Cash flows from operating activities                  
Net earnings (loss) for the period   (1,562 ) 13,276   (4,142 ) 13,394  
Items not affecting cash and cash equivalents                  
  Depreciation and amortization   2,478   2,011   4,859   3,829  
  Future income taxes   (630 ) 65   (1,819 ) 1,162  
  Deferred charges   15   129   239   463  
  Deferred revenues   (1,391 ) (1,995 ) (2,250 ) (2,955 )
  Accretion on convertible term loans (note 4)     2,101   1,227   2,524  
  Employee future benefits   103   110   238   227  
  Loss (gain) on dilution of investments   81   (16,393 ) 135   (16,393 )
  Non-controlling interest   3,268   1,980   6,828   3,503  
  Stock-based compensation costs   642   719   1,259   1,433  
  Foreign exchange loss (gain) on long-term items denominated in foreign currency   21   245   (341 ) 350  
Change in non-cash operating working capital items (note 5)   8,775   1,217   2,265   1,125  
   
 
 
 
 
    11,800   3,465   8,498   8,662  
   
 
 
 
 

Cash flows from financing activities

 

 

 

 

 

 

 

 

 
Payment on balance of purchase price     (2,186 )   (3,122 )
Increase in long-term debt   1,755   124   1,771   51,389  
Repayment of long-term debt   (7,646 ) (38,964 ) (8,981 ) (67,365 )
Issuance of shares   12     44   130  
Share issue expenses   (10 ) (12 ) (112 ) (104 )
Issuance of shares by a subsidiary, net of related expenses   87   38,416   232   37,850  
   
 
 
 
 
    (5,802 ) (2,622 ) (7,046 ) 18,778  
   
 
 
 
 

Cash flows from investing activities

 

 

 

 

 

 

 

 

 
Purchase of short-term investments   (1,990 ) (7,574 ) (6,233 ) (24,703 )
Proceeds from the sale of short-term investments   5,615   8,352   13,620   18,609  
Purchase of long-term investment     (400 )   (400 )
Business acquisition, net of cash and cash equivalents acquired (note 3)   (6,884 ) (81 ) (8,009 ) (18,360 )
Purchase of property, plant and equipment   (940 ) (657 ) (1,511 ) (914 )
Acquisition of amortizable intangible assets   (2 ) (415 ) (20 ) (625 )
   
 
 
 
 
    (4,201 ) (775 ) (2,153 ) (26,393 )
   
 
 
 
 
Net change in cash and cash equivalents   1,797   68   (701 ) 1,047  
Effect of exchange rate changes on cash and cash equivalents   1,012   (1,452 ) 1,329   (2,541 )
Cash and cash equivalents — Beginning of period   25,086   23,628   27,267   23,738  
   
 
 
 
 
Cash and cash equivalents — End of period   27,895   22,244   27,895   22,244  
   
 
 
 
 

Additional information

 

 

 

 

 

 

 

 

 
Interest paid   4,100   417   5,809   1,250  
Income taxes paid   1,464   1,672   3,424   3,631  

The accompanying notes are an integral part of these interim consolidated financial statements.

22


ÆTERNA ZENTARIS INC.
NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS
For the periods ended June 30, 2006 and 2005

(expressed in thousands of US dollars, except share and per share data)
Unaudited

1    Basis of presentation

        These interim financial statements as at June 30, 2006 and for the periods ended June 30, 2006 and 2005 are unaudited. They have been prepared by the Company in accordance with Canadian generally accepted accounting principles (GAAP) for interim financial information. In the opinion of management, all adjustments necessary to present fairly the financial position, results of operations and cash flows for these periods have been included.

        The accounting policies and methods of computation adopted in these financial statements are the same as those used in the preparation of the Company's most recent annual consolidated financial statements. All disclosures required for annual financial statements have not been included in these financial statements. These consolidated financial statements should be read in conjunction with the Company's most recent annual consolidated financial statements. These interim results of operations are not necessarily indicative of the results for the full year.

2    New accounting standards

Financial instruments, Hedges, Comprehensive Income and Equity

        In January 2005, the CICA issued four new accounting standards in relation with financial instruments: section 3855 "Financial Instruments — Recognition and measurement", section 3865 "Hedges", section 1530 "Comprehensive Income" and section 3251 "Equity".

        Section 3855 expands on section 3860 "Financial Instruments — Disclosure and Presentation", by prescribing when a financial instrument is to be recognized on the balance sheet and at what amount. It also specifies how financial instrument gains and losses are to be presented.

        Section 3865 provides alternative treatments to section 3855 for entities which choose to designate qualifying transactions as hedges for accounting purposes. It replaces and expands on Accounting Guideline AcG-13 "Hedging Relationships", and the hedging guidance in Section 1650 "Foreign Currency Translation" by specifying how hedge accounting is applied and what disclosure is necessary when it is applied.

        Section 1530 "Comprehensive Income" introduces a new requirement to temporarily present certain gains and losses outside net income.

        Consequently, Section 3250 "Surplus" has been revised as Section 3251 "Equity". Sections 3855, 3865 and 1530 apply to fiscal years beginning on or after October 1, 2006 and we will adopt them on January 1, 2007. Impacts consistent with the adjustments described in note 24 of our 2005 annual consolidated financial statements are expected.

3    Business acquisition

Amisol Company Ltd.

        On May 1, 2006, Atrium acquired, through its subsidiary MultiChem Import Export (2005) Inc. ("MultiChem"), the assets of Amisol Company Ltd. ("Amisol") for a total consideration of $7,169,000 (CAN$7,935,000), including all acquisition-related costs, of which an amount of $5,562,000 (CAN$6,156,000) was paid cash, $304,000 (CAN$336,000) was accrued as acquisition-related costs and $1,303,000 (CAN$1,442,000) as a balance of purchase price. Amisol has been marketing personal care products in Canada since 1974.

        This acquisition has been accounted for using the purchase method and the results of operations have been included in the statement of operations from the date of acquisition. The total consideration was allocated based on management's preliminary assesment as to the estimated fair value at the acquisition date. This preliminary assessment is subject to change upon receipt of an independant valuation report and the final determination of the fair value of the assets acquired and liabilities assumed.

23


        The allocated values of the net assets acquired are as follows:

 
  $
 
Assets      
Current assets   2,947  
Property, plant and equipment   71  
Intangible assets   1,000  
   
 
    4,018  
   
 

Liabilities

 

 

 
Current liabilities   1,093  
   
 
Net identifiable assets acquired   2,925  
Goodwill   4,244  
   
 
Purchase price   7,169  

Consideration

 

 

 
  Balance of purchase price   (1,303 )
  Unpaid acquisition costs   (304 )
   
 
Net cash paid for the acquisition   5,562  
   
 

        Goodwill and intangible assets are included in the Active Ingredients & Specialty Chemicals segment and are deductible for income tax purposes.

4    Convertible term loans

        On February 14 and 17, 2006, the Solidarity Fund QFL (the "Fund") and SGF Santé Inc. ("SGF") have respectively exercised their right to early convert the entirety of their convertible term loans in the principal amount of CAN$12.5 million each that they had extended to the Company in April 2003 and that were to mature on March 31, 2006. In accordance with the terms of the convertible term loans, and additional arrangements between the Company, the Fund and SGF, Æterna Zentaris has issued to each of the loan holders 3,477,544 of its common shares upon conversion of their loans, representing the principal and interest due to the stated maturity date under the loans, based on the conversion price that had been agreed upon in the loan agreement.

        For accounting purposes, the convertible term loans are bifurcated between debt and equity, the equity portion representing the value of the holders' conversion options. As a consequence of this transaction, the Company recorded a loss of settlement of long-term debt amounting to $599,190. An amount of $280,000 has been recorded in the Statement of Deficit and the remainder is a charge in the Statement of Operations and included in the accretion of convertible term loans in the Statement of Cash Flows.

24


5    Statements of cash flows and additional information

 
  Quarters ended June 30,
  Six months ended June 30,
 
 
  2006
  2005
  2006
  2005
 
 
  $

  $

  $

  $

 
Change in non-cash operating working capital items                  
  Accounts receivable   12,625   2,561   7,191   247  
  Inventory   (662 ) (1,193 ) 2,908   (949 )
  Prepaid expenses   520   295   (133 ) (459 )
  Accounts payable and accrued liabilities   (4,562 ) (839 ) (8,557 ) 1,760  
  Income taxes   854   393   856   526  
   
 
 
 
 
    8,775   1,217   2,265   1,125  
   
 
 
 
 
Employee future benefit expense for defined benefit plans   143   141   267   270  
   
 
 
 
 

6    Share capital

Authorized
Unlimited number of shares of the following classes:

        Common: Voting and participating, one vote per share

Issued
Common Shares

 
  Number
  Amount
  Other Capital
 
 
   
  $

  $

 
Balance — December 31, 2004   45,670,909   127,585   6,059  
Issued pursuant to the stock option plan              
  For cash   25,000   130    
Issued pursuant to the acquisition of Echelon Biosciences Inc.   443,905   2,737    
Conversion option related to convertible term loans       2,129  
Share issue expenses     (108 )  
Stock based compensation costs       2,286  
   
 
 
 
Balance — December 31, 2005   46,139,814   130,344   10,474  
   
 
 
 
Conversion of convertible term loans (see note 3)   6,955,088   37,786    
Issued pursuant to the stock option plan              
  For cash   13,500   44    
  Ascribed value from Other Capital     24   (24 )
Issued pursuant to the acquisition of a patent from a senior officer   28,779   175    
Issued pursuant to the contingent consideration related to the acquisition of Echelon Biosciences Inc.   23,789   163    
Conversion option related to convertible term loans       (6,339 )
Share issue expenses     (112 )  
Stock based compensation costs       1,116  
   
 
 
 
Balance — June 30, 2006   53,160,970   168,424   5,227  
   
 
 
 

25


7    Net loss per share

        The following table sets forth the computation of basic and diluted net earnings (loss) per share:

 
  Quarters ended June 30,
  Six months ended June 30,
 
 
  2006
  2005
  2006
  2005
 
 
  $

  $

  $

  $

 
Net earnings (loss)   (1,562 ) 13,276   (4,142 ) 13,394  
Impact of assumed conversion of dilutive stock options in a subsidiary   (288 ) (101 ) (568 ) (375 )
   
 
 
 
 
Net earnings (loss) adjusted for dilution effect   (1,850 ) 13,175   (4,710 ) 13,019  
   
 
 
 
 
 
 
  Quarters ended June 30,
  Six months ended June 30,
 
  2006
  2005
  2006
  2005
Basic weighted average number of shares outstanding   52,682,969   46,139,814   52,098,582   46,139,814
Effect of dilutive stock options   578,959   308,311   553,227   366,914
   
 
 
 
Diluted weighted average number of shares outstanding   53,261,928   46,448,125   52,651,808   46,506,728
   
 
 
 

Items excluded from the calculation of diluted net earnings (loss)
per share because the exercice price was greater than the average
market price of the common shares or their anti-dilutive effect.

 
  Quarters ended June 30,
  Six months ended June 30,
 
  2006
  2005
  2006
  2005
Stock options   1,863,833   1,812,333   1,887,245   1,793,750
Common shares which would be issued following the conversion of the convertible term loans     6,209,901     6,209,901

        For the quarter and six-month period ended June 30, 2006, the diluted net loss per share was the same as the basic net loss per share since the dilutive effect of stock options and convertible term loans was not included in the calculation; otherwise, the effect would have been anti-dilutive. Accordingly, the diluted net loss per share for these periods was calculated using the basic weighted average number of shares outstanding.

26


8    Segment information

        Æterna Zentaris' organizational structure is based on a number of factors that management uses to evaluate, view and run its business operations which include, but are not limited to, customer base, homogeneity of products and technology. The business segments disclosed in the interim consolidated financial statements are based on this organizational structure and information reviewed by Æterna Zentaris' management to evaluate the business segment results.

        The Company manages its business and evaluates performance based on three operating segments, which are the Biopharmaceutical segment, the Active Ingredients & Specialty Chemicals segment and the Health and Nutrition segment. The accounting principles used for these three segments are consistent with those used in the preparation of these consolidated financial statements.

 
  Quarters ended June 30,
  Six months ended June 30,
 
 
  2006
  2005
  2006
  2005
 
 
  $

  $

  $

  $

 
Revenues                  
Biopharmaceutical   9,383   10,160   18,131   23,907  
Active Ingredients and Specialty Chemicals   44,599   42,870   92,729   83,614  
Health and Nutrition   29,684   7,475   57,563   14,882  
Consolidated adjustments   (276 ) (361 ) (556 ) (394 )
   
 
 
 
 
    83,390   60,144   167,867   122,009  
   
 
 
 
 

Earnings (loss) from operations for the period

 

 

 

 

 

 

 

 

 
Biopharmaceutical   (5,451 ) (3,371 ) (11,556 ) (3,236 )
Active Ingredients and Specialty Chemicals   3,789   3,680   7,656   7,414  
Health and Nutrition   7,058   3,147   13,728   5,781  
   
 
 
 
 
    5,396   3,456   9,828   9,959  
   
 
 
 
 

9    Comparative figures

        Certain comparative figures have been reclassified to conform with the current year presentation.

27



SIGNATURE

        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.

    ÆTERNA ZENTARIS INC.

Date: August 14, 2006

 

 

 

 

 

By:

/s/  
MARIO PARADIS      
Mario Paradis
Vice President, Finance & Administration and
Corporate Secretary



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DOCUMENTS INDEX
Management's Discussion and Analysis of Financial Condition and Results of Operations
SIGNATURE