Use these links to rapidly review the documentTABLE OF CONTENTS METABOLIX, INC.



UNITED STATES
SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

FORM 10-K

ý

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 31, 2007; oro

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934Commission File Number 001-33133


METABOLIX, INC.(Exact name of registrant as specified in its charter)

|Delaware                                                       |  | 04-3158289                          
|-------------------------------------------------------------- |  | ------------------------------------
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)
|21 Erie Street
Cambridge, MA                                   |  | 02139                               
|(Address of principal executive offices)                       |  | (Zip Code)                          

(Registrant's telephone number, including area code):(617) 583-1700

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Securities registered pursuant to Section 12(b) of the Act:

|Common Stock, par value $.01 per share |  | The NASDAQ Stock Market LLC         
|-------------------------------------- |  | ------------------------------------
|Title of each class                    |  | Name of exchange on which registered

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate
by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.
Yes o    No ý

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.
Yes o    No ý

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. Yes ý    No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (Section 229.405 of this chapter) is not
contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this
Form 10-K or any amendment to this Form 10-K. o

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

|Large accelerated filer o |  | Accelerated filer ý |  | Non-accelerated filer o (Do not check if a smaller reporting company) |  | Smaller reporting company o
|------------------------- |  | ------------------- |  | --------------------------------------------------------------------- |  | ---------------------------

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

The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common
equity was last sold on the NASDAQ Global Market on June 29, 2007 was $370.9 million.

The
number of shares outstanding of the registrant's common stock as of February 29, 2008 was 22,262,664.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant's definitive Proxy Statement to be filed with the Securities and Exchange Commission (the "Commission") pursuant to Regulation 14A in
connection with the 2008 Annual Meeting of Stockholders to be held on May 30, 2008 are incorporated herein by reference into Part III of this report.



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METABOLIX, INC.

ANNUAL REPORT ON FORM 10-K

For the Year Ended December 31, 2007

INDEX



|          |  |                                                                                                              |  | Page
|--------- |  | ------------------------------------------------------------------------------------------------------------ |  | ----
|PART I.  
|Item 1    |  | Business                                                                                                     |  | 3   
|Item 1A   |  | Risk Factors                                                                                                 |  | 22  
|Item 1B   |  | Unresolved Staff Comments                                                                                    |  | 37  
|Item 2    |  | Properties                                                                                                   |  | 37  
|Item 3    |  | Legal Proceedings                                                                                            |  | 37  
|Item 4    |  | Submission of Matters to a Vote of Security Holders                                                          |  | 38  
|PART II. 
|Item 5    |  | Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities |  | 38  
|Item 6    |  | Selected Financial Data                                                                                      |  | 40  
|Item 7    |  | Management's Discussion and Analysis of Financial Condition and Results of Operations                        |  | 42  
|Item 7A   |  | Quantitative and Qualitative Disclosures About Market Risk                                                   |  | 54  
|Item 8    |  | Financial Statements and Supplementary Data                                                                  |  | 55  
|Item 9    |  | Changes in and Disagreements with Accountants on Accounting and Financial Disclosure                         |  | 55  
|Item 9A   |  | Controls and Procedures                                                                                      |  | 55  
|Item 9B   |  | Other Information                                                                                            |  | 56  
|PART III.
|Item 10   |  | Directors, Executive Officers and Corporate Governance                                                       |  | 57  
|Item 11   |  | Executive Compensation                                                                                       |  | 57  
|Item 12   |  | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters               |  | 57  
|Item 13   |  | Certain Relationships and Related Transactions, and Director Independence                                    |  | 57  
|Item 14   |  | Principal Accountant Fees and Services                                                                       |  | 57  
|PART IV. 
|Item 15   |  | Exhibits and Financial Statement Schedules                                                                   |  | 57  
|          |  | SIGNATURES                                                                                                   |  | 60  
|EX-10.10  |  | Employment Agreement between the Registrant and Richard P. Eno dated February 20, 2008                       |  |     
|EX-10.27  |  | Exclusive License Agreement between the Registrant and Abbott Laboratories dated November 12, 2007           |  |     
|EX-10.28  |  | Form of Employee Noncompetition, Confidentiality and Inventions Agreement with Richard P. Eno                |  |     
|EX-23.1   |  | CONSENT OF PRICEWATERHOUSECOOPERS LLP                                                                        |  |     
|EX-31.1   |  | SECTION 302 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER                     |  |     
|EX-32.1   |  | SECTION 906 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER                     |  |     

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Forward Looking Statements

This annual report on Form 10-K contains "forward-looking statements" within the meaning of 27A of the Securities Act of 1933, as amended, and
Section 21E of the Securities Exchange Act of 1934, as amended. In particular, statements contained in the Form 10-K, including but not limited to, statements regarding our
future results of operations and financial position, business strategy and plan prospects, projected revenue or costs and objectives of management for future research, development or operations, are
forward-looking statements. These statements relate to our future plans, objectives, expectations and intentions and may be identified by words such as "may," "will," "should," "expects," "plans,"
"anticipate," "intends," "target," "projects," "contemplates," "believe," "estimates," "predicts," "potential," and "continue," or similar words.

Although
we believe that our expectations are based on reasonable assumptions within the bounds of our knowledge of our business and operations, the forward-looking statements contained
in this document are neither promises nor guarantees. Our business is subject to significant risk and uncertainties and there can be no assurance that our actual results will not differ materially
from our expectations. These forward looking statements include, but are not limited to, statements concerning: future financial performance and position, management's strategy, plans and objectives
for future operations, plans and objectives for product development and commercialization, plans and objectives for present and future research and development and results of such research and
development, plans and objectives for manufacturing, the commercialization of environmentally sustainable, economically attractive alternatives to petroleum-based plastics, chemicals and energy, the
commercialization of Mirel biobased plastic through our alliance with Archer Daniels Midland Company, or ADM, sales of Mirel as an alternative to petroleum-based plastics, the
construction of the Commercial Manufacturing Facility, the production of Mirel at the Commercial Manufacturing Facility, the commercial success of Mirel, the feasibility of
extractingbiobased plastic from plant crops, the commercial viability of plant-produced plastics, recognition of revenue, and management's plans and
expectations for revenue from government grants, research and development revenue, research and development expenses and capital and working capital requirements. Such forward-looking statements are
subject to a number of risks and uncertainties that could cause actual results to differ materially from those anticipated including, without limitation, the following risks: (1) we may not be
successful at manufacturing biobased plastics on a commercial scale in a timely and economical manner, (2) we may not be successful in the development of our products, including Mirel,
(3) we depend on ADM for the construction of the Commercial Manufacturing Facility, (4) if ADM does not build the Commercial Manufacturing Facility on time and on budget, our revenues
and the distribution of profits, if any, to us will be delayed, (5) we may not be able to develop manufacturing capacity sufficient to meet demand in an economical manner or at all,
(6) we may not achieve market acceptance of our products, (7) we have limited marketing and sales experience and capabilities, which may make the commercialization of our products
difficult, (8) we rely heavily on ADM and will rely heavily on future collaborative partners, (9) our success will be influenced by the price of petroleum, the primary ingredient in
conventional petroleum-based plastics, relative to corn sugar, the primary ingredient in Mirel, (10) our future profitability is uncertain, and we have a limited operating history on which you
can base your evaluation of our business, (11) we may need to secure additional funding and may be unable to raise additional capital on favorable terms or at all, (12) if we lose key
personnel or are unable to attract and retain necessary talent, we may be unable to develop or commercialize our products under development, (13) confidentiality agreements with employees and
others may not adequately prevent disclosure of our trade secrets and other proprietary information and may not adequately protect our intellectual property, which could limit our ability to compete,
(14) patent protection for our products is important and uncertain, (15) a substantial portion of the technology used in our business is owned by or subject to retained rights of third
parties, (16) third parties may claim we infringe their intellectual property, and we could suffer significant litigation or licensing expense as a result, (17) if we are unable to
manage our growth effectively, our business could be adversely affected, (18) we may

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not
be successful in identifying market needs for new technologies and developing new products to meet those needs, (19) Mirel is made using genetically modified products and may be, or may be
perceived as being, harmful to human health or the environment, (20) we face and will face substantial competition in several different markets that may adversely affect our results of
operations, (21) we are subject to significant foreign and domestic government regulations, including environmental and health and safety regulations, and compliance or failure to comply with
these regulations could harm our business, (22) our government grants may subject us to government audits, which could materially harm our business and results of operations, (23) we
face risks associated with our international business, (24) our pre-commercial manufacturing recovery operations are currently conducted at a single location which makes us
susceptible to disasters, and (25) we may be subject to product liability
claims based on products sold by us, our customers and/or our licensees.

The
forward-looking statements and risks factors presented in this document are made only as of the date hereof and we do not intend to update any of these risk factors or to publicly
announce the results of any revisions to any of our forward-looking statements other than as required under the federal securities laws.

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PART I

ITEM 1.    BUSINESS

Overview

We are a bioscience company that develops and plans to commercialize environmentally sustainable, economically attractive alternatives to petroleum-based
plastics, chemicals and energy. Our strategy is to develop technology platforms that integrate advanced biotechnology with current industrial practice and to commercialize these platforms with
industry leading strategic partners.

Our
first platform, which we are commercializing through Telles, a joint venture with Archer Daniels Midland Company, or ADM, is a proprietary, large-scale microbial fermentation system
for producing a versatile family of polymers known as polyhydroxyalkanoates, which we have branded under the name Mirel. Through Telles, we intend to sell these bioplastics as
environmentally friendly, but functionally equivalent, alternatives to petroleum-based plastics in a wide range of commercial applications, including packaging, consumer goods, consumer electronics,
products used in agriculture and horticulture, and marine and water applications. Mirel will be produced in a 110 million pound annual capacity commercial scale plant, or Commercial
Manufacturing Facility, which is presently under construction by ADM in Clinton, Iowa. The timing of product availability from the Commercial Manufacturing Facility has been projected to be December
2008. However, much of the current construction work at Clinton has been impacted by this year's harsh Midwest winter, and ADM is in the process of re-evaluating construction timing for the Clinton
project. The Commercial Manufacturing Facility will produce biobased, sustainable and biodegradable Mirel plastic out of corn sugar, an abundant agriculturally-produced renewable resource. We are
currently producing
pre-commercial quantities of Mirel jointly with ADM at a small scale pre-commercial manufacturing facility.

Our
second technology platform, which is in an early stage, is a biomass biorefinery system using plant crops to co-produce both bioplastics and bioenergy. For this system,
we intend to extract polymer from the engineered plant crop, so that the remaining plant material can be used as a biomass feedstock for the production of bioenergy products including electricity and
biofuel. We are engineering switchgrass to produce bioplastics in the leaf and stem of the plant. We also have a collaboration with the Australian Cooperative Research Centre to do the same in
sugarcane, and we have recently established a strategic research collaboration with the Donald Danforth Plant Science Center to develop an advanced industrial oilseed crop for
co-production of bioplastics along with vegetable oil, biodiesel fuel, or oleochemicals. Switchgrass is a commercially and ecologically attractive, non-food energy crop that is
indigenous to North America and is generally considered to be a leading candidate for cellulose-derived production of ethanol and other biofuels. Sugarcane is an established energy crop that is well
suited for tropical regions of the world. We believe that using these crops to co-produce bioplastics with bioenergy products can offer superior economic value and productivity as compared
to single product systems that produce them individually. We have been working on our biomass biorefinery platform using switchgrass for several years, and we believe that we are a scientific leader
in this field. Our goals for this program are to have commercially viable plant varieties in pre-commercial field trials in three to four years. We may also seek to establish alliances
with partners to commercially exploit this platform.

As
demonstrated by our first two technology platforms, we take an integrated systems approach to our technology development. We are focused on developing entire production systems from
gene to end product as opposed to developing specific technologies (for example, gene sequencing, shuffling or directed evolution) or singular aspects of a product's production (for example, providing
a key enzyme, catalyst or ingredient). We believe this systems approach optimizes manufacturing productivity and, when commercialized, will enable us to capture more economic value from any platform
that we pursue. We have core capabilities in microbial genetics, fermentation process engineering, chemical

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engineering,
polymer science, plant genetics and botanical science, and we have assembled these capabilities in a way that has allowed us to integrate biotechnology with chemical engineering and
industrial practice. We believe that our approach can be applied to chemicals and other products to help establish and grow environmentally sustainable plastics, chemicals and energy industries.

We
intend to apply our core capabilities in microbial engineering and plant transformation to develop biological routes to other chemicals and chemical intermediates. In September 2007
the U.S. Department of Commerce's National Institute of Standards and Technology approved a $2 million award for us to develop a commercially viable process for producing biobased chemicals
from renewable agricultural products. This award will fund our integrated bio-engineered chemicals program, which is beginning development of sustainable solutions for widely used
four-carbon industrial chemicals.

To
exploit our first technology platform, we are working with ADM to build the Commercial Manufacturing Facility in Clinton, Iowa. The bioplastics that this facility will produce are
highly versatile and range in properties from hard and strong to soft and flexible. These properties allow for a wide variety of commercial applications, offering an environmentally-friendly
alternative to petroleum-derived synthetic materials which are not biodegradable. Through Telles we intend to initially position Mirel as a premium priced specialty material catering to customers who
want to match the functionality of petroleum-based plastic, but add the dimension of environmental responsibility to their products and brands.

With
ADM we have initiated product and business development activities including production of pre-commercial amounts of Mirel, working with potential customers, and
initiation of qualification trials of our material for selected customer applications. We expect that our products will initially be sold to companies that are:



We
have a current pipeline of prospective customers that reflect each of these traits.

Market Opportunity

Emerging Issues Surrounding Petrochemicals

The markets for petroleum-based plastics, chemicals and energy are among the largest in the global economy. While these markets encompass a diverse array of
products, they are all derived from fossil feedstocks, particularly petroleum and natural gas. The prolonged broad use of these petroleum-based products has created several economic, social and
environmental issues, including plastic waste management and pollution, rising fossil fuel prices, energy security and climate change. These issues have resulted in rising levels of interest in
product alternatives that are biobased, sustainable and biodegradable, unlike fossil fuels.

Plastic Waste Management and PollutionAccording to the U.S. Environmental Protection Agency, 28.9 million tons of
plastic solid waste was deposited into the U.S. municipal solid waste stream in 2005. Plastics are a rapidly growing contributor to U.S. municipal solid waste, having increased from less than 1% in
1960 to over 11.8% by weight in 2005. In spite of intensive efforts to promote collection and recycling, only 1.7 million tons of plastic or 5.7% of plastic solid waste was recycled that year.
While the balance is mostly deposited in landfills and waste treatment facilities, many plastic items, particularly single use items such as bottles and caps, cups, lids and straws, and grocery bags

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become
litter in the environment where they can become a significant problem. Plastic waste can create a significant monetary burden on state and local governments. This situation has led California
and local jurisdictions within California to consider legislation banning the use of such plastic items or imposing significant taxes on them. San Francisco currently has a ban on plastic bags in
grocery stores and chain pharmacies, and Los Angeles is considering similar legislation.

Moreover,
current disposal methods may have adverse consequences to people's health, safety and the environment. Most wastes are placed in landfills or burned in incinerators. The
burning process may produce dioxins and other hazardous substances that are released into the environment. In addition, landfills are filling up and requiring more land sources. Though attempts to
slow the growth of landfills have led to recycling legislation, it is still recognized that other solutions will need to be pursued to address the problem.

The
threat that petroleum-based plastics pose to the marine ecosystem has been well documented. Studies have noted that the world's oceans show increasing levels of persistent plastic
particles of a size ingestible by marine creatures at the bottom of the food chain. Larger plastic items are also accumulating in large quantities in certain parts of the ocean, and marine birds and
mammals have been found killed by ingesting or getting tangled in plastic debris. Los Angeles County is now under court order to clean up the plastic waste in the Los Angeles River, at an estimated
cost of $2 to $3 billion.

The Rising Cost of Fossil FuelWorld oil prices have increased from an average of $36 per barrel in 2004 to over $100 per
barrel during 2008. Declining domestic production in the United States, higher demand in the developed world, rising demand in emerging markets, the increasing cost of drilling activities,
underinvestment in infrastructure, and the increasing proportion of hydrocarbon reserves in politically unstable regions are all stimulating an environment of rising and increasingly volatile oil and
natural gas prices. The lack of substantial excess supply leaves the existing petrochemical market subject to the significant risk of supply disruptions or dramatically higher oil prices. Because
fossil fuels are the primary feedstock for the plastics industry, polymer prices have also been experiencing increases in both level and volatility.

Energy SecurityThere is a growing view that developing alternatives to fossil fuel is a matter of national security. While
the United States accounts for just 5% of the world's population and 2% of the world's oil reserves, the United States consumes 25% of world oil production. The majority of the U.S. oil needs are
imported, with significant supplies coming from unstable or politically risky parts of the world (the Middle East, Nigeria, Venezuela, and Russia), presenting risks to the economy and national
security. Furthermore, oil is a finite resource, and there is growing evidence that the natural peak for production may occur within the next 20 years.

Climate ChangeThere is a growing scientific consensus that global climate change is occurring and that the rise in carbon
dioxide emissions over the last 100 years has contributed to this situation. A significant source of CO2 emissions comes from the use of fossil fuel. The broad acceptance of the Kyoto protocol
is evidence of the widespread concern for global climate change in the industrialized world. In the United States, companies have started to account for carbon emissions, to prepare for carbon limits
and credit trading schemes, and to seek solutions for reducing their carbon emission profile.

The Plastics Market

The plastics market is a large and global marketplace consisting of a broad range of polymer resins. The market includes several widely used, high volume
commodity resins and numerous lower volume, higher performance resins targeting specialized end uses. Over the past forty years the plastics

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market
has posted relatively consistent growth driven by a number of important fundamental factors including:



The
growth in plastic use has generally exceeded overall economic growth as plastics have entered numerous new markets and product applications based on their functionality and ability
to meet numerous user requirements.

There
are many different categories of plastics sold into the market today, but they are generally categorized into two broad groups: commodity polymers and specialty polymers. The most
commonly known commodity polymers include polyethylene, polypropylene, polystyrene, PET and polyvinyl chloride. The commodity polymers are high volume resins which tend to be lower value-added
materials produced in volumes of tens of billions of pounds per year. The global market for plastics for use in compostable bags, cosmetics packaging, card stock, consumer electronics,
agricultural/horticultural applications and marine/water applications alone is approximately two billion pounds per year, with a growth rate of 5% annually. Specialty polymer pricing varies widely
based on the type of resin and the performance characteristics offered by the material. However, these resins are typically priced at a premium to commodity plastics and, according to Plastics Technology, were selling at values starting above $0.80 per pound and reaching as high, in some cases, as $3.60 per pound in June 2006. In
contrast, the commodity grade resins were generally priced at less than $1.00 per pound at that time. Pricing has been volatile due to fluctuations in raw materials costs and supply/demand
characteristics.

Fuels and Bioenergy Markets

According to the U.S. Department of Energy's Report on International Energy Outlook dated May 2007, worldwide demand for oil is expected to rise by over 40% from
83 million barrels a day in 2004 to 118 million barrels a day in 2030. The issues surrounding petroleum discussed above have given rise to increasing demand for fuels produced from
renewable sources. Many states are considering legislation to capitalize on the environmental and energy security benefits of renewable fuels by requiring their use.

In
December of 2007, President Bush signed into law H.R. 6, the "Energy Independence and Security Act," which includes a historic Renewable Fuels Standard (RFS) calling for at least
36 billion gallons of ethanol to be used nationwide by 2022. The new RFS schedule calls for a minimum of 9 billion gallons of ethanol to be used nationwide in 2008, 20.5 billion
gallons by 2015, and a total of 36 billion gallons by 2022. This long-term growth plan for ethanol is intended to spur its commercialization from cellulosic feedstocks such as
native grasses, crop residues, forestry waste, and many other materials from all regions of the country. The National Commission on Energy Policy estimates that the new RFS and the increased fuel
efficiency standards in the bill will reduce domestic oil use by 5 million barrels per day by 2030, save consumers $161 billion annually in fuel costs by 2030, and reduce the nation's
carbon dioxide emissions by 320 million metric tons in 2020.

While
ethanol is typically produced from starch contained in grains such as corn and grain sorghum, it can also be produced from cellulose. Cellulose is the main component of plant cell
walls and is the most common organic compound on earth. The production of ethanol from corn is a mature

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technology
that is not likely to see significant reductions in production cost. The ability to produce ethanol from low-cost biomass will be an important factor in making it competitive as
a gasoline additive.

Oilseed
crops are of importance for feed, food and industrial applications. The chemical conversion of vegetable oils to a variety of oleochemicals is already well established. A very
important and growing area of application is the production of biodiesel by transesterification of vegetable oils with either methanol or ethanol to produce the corresponding methyl or ethyl esters.
Biodiesel is a very good fuel that reduces ground level ozone, reduces our reliance on petrochemical resources, and reduces greenhouse gas emissions. The energy content is only slightly less than
conventional diesel. With the help of federal tax incentives, the U.S. demand is continuing to grow at double digit rates from a low base of 110 million gallons and is expected to increase to
over 300 million gallons over the next few years according to the National Biodiesel Board.

The Metabolix Solution

We are developing and are beginning to commercialize economically attractive, environmentally sustainable alternatives to petroleum-based plastics that are
biobased, biodegradable and functionally equivalent to traditional petroleum-based plastics. The use of a renewable agricultural feedstock as a manufacturing input and the biodegradability of our
plastics can potentially address many of the issues associated with petroleum-based products. Our first product, which we will be commercializing through Telles, our joint venture with ADM, is Mirel
bioplastic, produced from corn sugar using our proprietary, large-scale microbial fermentation system. We are also developing a proprietary platform technology for co-producing plastics,
chemicals and energy in crops such as switchgrass, sugarcane, and oilseeds.

A Solution to Plastic Waste and Pollution from Persistent PlasticsMirel is biodegradable under a wide
variety of conditions and therefore offers new options for addressing the burdens of traditional plastic solid waste on the municipal waste stream and the dangers posed within the marine ecosystem.
For example, Mirel will decompose in landfills where air, moisture and bacteria are present. In aerobic conditions, Mirel degrades into water and carbon dioxide. Mirel will also rapidly decompose in a
waste treatment facility and will degrade when flushed into household septic systems. It can be cleanly incinerated, and can also be degraded in industrial or backyard composting environments. Mirel
will also biodegrade in aquatic environments, and so offers a solution to the hazard of persistent plastics in wetland, river, coastal, and ocean ecosystems. It is critical to note, however, that
Mirel is functionally durable under typical cold, hot or wet conditions and only degrades in the environment subject to microbial action.

Decreasing Carbon Dioxide EmissionsWe believe that the widespread use of our biobased plastics not
only can decrease the use of fossil fuel but also can reduce the emission of carbon dioxide into the atmosphere. While the production of Mirel produces carbon dioxide, both the agricultural production
of corn feedstock for microbial fermentation and the direct production of biobased plastics in plant crops such as switchgrass have the added benefit of removing carbon dioxide from the environment
through photosynthesis. An independent life cycle assessment (LCA) for Mirel, conducted by Dr. Bruce Dale, professor of Chemical Engineering at Michigan State University, determined that
production of Mirel reduces the use of nonrenewable energy by more than 95% and provides a 200% reduction in greenhouse gases compared to production of conventional petroleum-based plastics.

Leveraging Agricultural Commodity Pricing Relative to Petrochemical CostsOur use of corn sugar as a
feedstock to produce Mirel and our use of other plant crops to co-produce plastics will reduce the reliance on fossil fuel as the primary input source, thus significantly addressing the
effects of the increasing cost of fossil fuel. We believe that polymers based on agricultural feedstocks, such as Mirel, may experience a more predictable cost structure and may become competitive to
traditional

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petroleum-based
polymers over time. While Mirel will be produced using corn sugar, which has experienced rising prices due to increased ethanol demand, other sugars including cane or cellulosic sugar
as well as vegetable oils can be used as feedstocks, which can enhance cost stability. The relative cost contribution of corn to Mirel is significantly less than that of the feedstocks for traditional
petroleum-based polymers. Furthermore, even if pricing dynamics for corn and corn sugar change from past experience, we believe the volatility of oil prices will provide an incentive to diversify
feedstocks.

Reducing Dependency on Foreign EnergyWe believe the widespread use of our Mirel can help lower the
United States' exposure to oil imported from politically unstable countries. In addition, we believe that the plastic-producing crops, which we intend to develop, offer the United States an additional
opportunity in biofuels production, which currently is focused primarily on corn-based ethanol. We estimate that an annual crop of 160 million tons of plastic-producing switchgrass
could produce fuel equivalent to one million barrels of oil per day, approximately 5% of current U.S. oil consumption, as well as 15 million tons of polymer per year.

History of Biobased Plastics and Formation of Metabolix

Polymers are found in nature in a wide range of organisms including microbes, plants and in animals. Polyhydroxyalkanoates, or PHAs, also naturally occur within
certain organisms, including microbes. These microbes use PHA to store energy and consume it for food when needed. It is this characteristic that gives Mirel its biodegradability.

Though
PHA polymers are found in nature, their production in wild-type bacterial strains is inefficient and costly for commercial purposes. In 1981, Imperial Chemical
Industries, or ICI, developed a controlled fermentation process using a wild-type bacterial strain to produce a PHA copolymer that they introduced under the trade name Biopol. While a
handful of applications were developed for Biopol, the cost to produce the polymer using the naturally occurring bacterial strains that were available at the time was prohibitively high and its
performance properties were limited. Commercialization was not possible, but the Biopol assets remained largely intact and were eventually sold to Monsanto, Inc.

By
the late 1980s, tools for genetic engineering had advanced significantly, and microbes were already being genetically designed to produce various products, such as protein drugs. At
the Massachusetts Institute of Technology, Dr. Oliver Peoples, our Chief Scientific Officer, working in the lab of Dr. Anthony Sinskey, a member of our Board of Directors, identified the
key genes required for the biosynthesis of Mirel and invented and patented the first transgenic systems for their production. The use of genetically engineered production organisms, instead of
wild-type strains, broadly expanded the number of compositions that could be made and enabled the tight level of control and high efficiency and productivity that are required for
cost-effective industrial manufacturing.

Our
company was formed in 1992 to exploit these discoveries. In order to fully capture the opportunity, we also acquired Monsanto's patent estate which relates to biobased plastics,
which included the Biopol assets, in 2001. We have since fully developed an integrated manufacturing process using transgenic strains for fermentation and a proprietary recovery process. This
integrated manufacturing process is being incorporated into the Mirel Commercial Manufacturing Facility. We have also developed proprietary plastic formulation technology, and we are also developing
our platform technology for co-producing plastics, chemicals and energy in crops such as switchgrass, oilseeds and sugarcane.

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Business Strategy

Our goal is to be the leader in discovering, developing and commercializing economically attractive, environmentally sustainable alternatives to petroleum-based
plastics, chemicals and energy. To achieve this goal, we are building a portfolio of programs that we believe will not only provide an attractive slate of commercial opportunities but will also
generate leading and competitive intellectual property positions in the field. Key elements of our strategy include:

Establishing Production of MirelWe have put into operation a pre-commercial manufacturing
facility to produce Mirel to seed the market, and we have contracted with others to perform certain processing and compounding steps. During 2007 we expanded our pre-commercial production
facility to a design capacity of 50,000 pounds per month in order to supply greater amounts of Mirel material for market development activities. As part of our strategic alliance, ADM is constructing
a 110 million pound annual capacity Commercial Manufacturing Facility to produce Mirel. The ADM site in Clinton, Iowa is being built to accommodate significant expansion beyond its initial
capacity.

Market Positioning and SalesWe have put in place a marketing and sales team to educate and develop
our prospective customer base for Mirel. This team is focused on positioning Mirel as a premium priced, specialty material that is an environmentally attractive alternative to petroleum-based
plastics. We are marketing our biobased plastic under the brand name Mirel consistent with this positioning and will seek to co-brand Mirel with our customers. The focus of this effort is
to build a pipeline of customer projects across a range of applications. Our goal is to obtain substantial customer commitments prior to completion of the Commercial Manufacturing Facility.

Continuing Microbial Research and Process DevelopmentWe have identified opportunities to improve our
production strains and our fermentation and recovery processes. We believe that significant reductions in the cost to manufacture Mirel can occur as we successfully exploit these opportunities. We
also believe that as we acquire more experience with manufacturing our products at commercial scale, we will identify further improvements we can make.

Developing Applications for MirelWe have developed formulations of our polymer suitable for injection
molding, blown and cast film, sheet, extrusion coating, and thermoforming. These
grades will be refined further to tailor them for specific customer performance requirements, and additional grades will be developed for other applications. In addition, we plan to develop new
formulations and processing protocols to extend the applications into which we can sell our products. Specific areas of work may include extrusion coating, foam and fiber.

Advancing Switchgrass Research and Other Plant StrainsWe believe that we are pioneering the technical
process of introducing multigene traits into plant crops for the production of plastics directly in the plant. Our switchgrass platform is currently in the research phase. In order to achieve a
commercially attractive system, we intend to further improve our plant strains to achieve high levels of PHA content by weight. We also intend to research introducing traits to increase crop yields in
terms of tons per acre, and enhance biomass processability for the production of energy. We are also exploring additional crop varieties that offer attractive commercial opportunities. These include
oilseed, which is suitable for northern climates and can co-produce PHAs along with biodiesel feedstock, and sugar cane, which is suitable for tropical climates and can
co-produce PHAs along with ethanol feedstock.

Partnering our Plastics in Plant Crops ProgramsAs appropriate, we may seek to leverage our technology
and establish strategic partnerships with one or more industry leading companies that can provide access to resources and infrastructure valuable for commercializing these platforms. These
partnerships may take the form of large-scale strategic collaborations, or more limited collaborations with partners having complementary strengths, for example in biorefinery operations or marketing.

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Building Governmental Awareness of Our ApproachPolicy makers are seeking opportunities to reduce
dependence on imported fossil fuel, decrease carbon dioxide emission, and address landfill and pollution issues. We intend to continue to build our governmental affairs initiatives, primarily in
California, which is well known as a leader in environmental legislation. We believe that higher awareness of our solution may result in legislation that can facilitate and accelerate the adoption of
our products.

Extending Our Technology to Sustainable Production of Large Volume Chemicals and IntermediatesWe
believe that our technical capabilities can be applied to produce important commercial chemicals and chemical intermediates through biological conversion of sustainable feedstocks such as sugars.
Through our integrated bio-engineered chemicals program, we plan to conduct research into the development of sustainable solutions for widely used four-carbon industrial
chemicals.

Furthering our Leading and Competitive Intellectual Property PositionWe have built a patent estate
around our platform technologies and a variety of inventions relevant to the
commercialization of Mirel. We plan to extend this patent estate within our core business as well as to other commercial opportunities in the area of biobased plastics, chemicals and energy. Where
appropriate, we may also license our intellectual property to others in fields outside our areas of interest. Some of the areas in which we may seek to establish leading and competitive intellectual
property include:



Mirel

Our first platform, which we will be commercializing through Telles, our joint venture with Archer Daniels Midland Company, or ADM, is a proprietary, large-scale
microbial fermentation system for producing bioplastics. Our microbial fermentation system combines our proprietary engineered microbes with corn sugar and other materials in a fermenter. The microbes
digest the corn sugar and produce the bioplastics (polyhydroxyalkanoates, or "PHAs") inside the microbes. We separate the bioplastics from the remainder of the microbes and formulate Mirel into its
final form for commercial sale.

Alliance with Archer Daniels Midland Company

On July 12, 2006, we entered into a commercial alliance with ADM Polymer Corporation, a wholly-owned subsidiary of ADM, one of the largest agricultural
processors in the world. The commercial alliance has two phases, which are described below and include: (i) a Commercial Alliance Phase and (ii) a Joint Venture Phase.

Commercial Alliance PhaseThe purpose of this phase is to build the Commercial Manufacturing Facility,
to market and sell Mirel through a joint venture company owned equally by
each of Metabolix and ADM Polymer, which we have named Telles, to make arrangements for the financing of the operation and to allocate distributions of cash flow.

On
July 12, 2006, ADM exercised its option to enter into the Commercial Alliance. The Commercial Alliance Phase will last until the expiration of all patents relating to PHAs
produced through fermentation (including patents licensed by us to Telles and patents claiming inventions made during the strategic alliance with ADM Polymer), unless we and ADM enter the Joint
Venture Phase (as described below) or unless either party terminates the strategic alliance. During the Commercial Alliance Phase, ADM is responsible for and finances construction of the Commercial
Manufacturing Facility, which it will own and contract on a dedicated basis to Telles. In addition, ADM will finance

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the
working capital requirements of Telles. We are responsible for compounding operations and investing in compounding equipment, and we will take responsibility for continuing research and
development. In addition, we will lead the sales and marketing efforts on behalf of Telles until completion of the construction of the Commercial Manufacturing Facility. At that time, Telles will
assume control of such activities. Telles will make up to twelve quarterly payments of approximately $1.6 million to us to support these activities during the construction of the Commercial
Manufacturing Facility. After the twelfth payment is received and until commercial sales of product from the Commercial Manufacturing Facility begin, we will bear all the costs of such sales and
marketing activities. In the event construction is completed and sale of commercial product commences prior to Telles making all twelve such payments, the quarterly payments will cease, and the joint
venture will pay us a lump sum equal to the number of remaining unpaid payments multiplied by $250,000.

Upon
the commencement of commercial sales, Telles will pay royalties to us for all Mirel sold by Telles. Telles will also pay manufacturing fees to ADM for production of Mirel and will
pay compounding fees to us for certain compounding services. Telles will compensate ADM and us for services that we each may provide under separate service agreements. For example, we anticipate that
we may provide research, development, marketing and sales services to Telles under such a service agreement.

ADM
is constructing and financing, and will own and operate the Commercial Manufacturing Facility through a manufacturing agreement with Telles. Even though Telles is a separate legal
entity owned equally by each of Metabolix and ADM Polymer, ADM Polymer will disproportionately fund the activities of Telles subject to certain limitations. In order to rebalance the respective
investments made by the parties, a preferential distribution of cash flow will be used, whereby all profits, after payment of all royalties, reimbursements and fees, from Telles will be distributed to
ADM until ADM's disproportionate investment in Telles, including the costs of constructing the Commercial Manufacturing Facility, have been returned to ADM. Once ADM has recouped such amounts, the
profits of Telles will be distributed in equal amounts to the parties.

Our
agreements with ADM limit ADM's and our right to work with other parties or alone, in developing or commercializing PHAs made through fermentation. These agreements do not, however,
limit our right to develop, manufacture or sell biobased plastics, including PHAs, produced through
plants such as switchgrass, sugarcane or oilseeds (rather than through fermentation) independent of the alliance.

These
agreements also include detailed provisions setting out the rights and obligations of the parties in the event of a termination of the Commercial Alliance. These provisions include
the right of the parties to terminate the Commercial Alliance upon a material default of a material obligation by the other party after a notice and cure period has expired. The parties are also
permitted, under limited circumstances, to terminate the Commercial Alliance if a change in circumstances that is not reasonably within the control of a party makes the anticipated financial return
from the project inadequate or too uncertain. ADM and we have agreed that the following are examples of a change in circumstances beyond the reasonable control of ADM:



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The
agreement does not provide examples of a change in circumstances beyond our reasonable control. Finally, the parties have specific obligations to fulfill in the event of termination
or if they file for bankruptcy protection. The obligations on termination are generally structured to permit the non-breaching party (in the event the strategic alliance is terminated due
to a breach of the agreements) to continue to develop the business established by the alliance. For example, on such a termination due to a breach by us, ADM would be permitted to continue to produce
and sell Mirel (generally in limited quantities and subject to a royalty to us) and we would be required to perform compounding services for ADM for a period of time following the termination.
Similarly, on a termination due to a breach by ADM or termination by ADM due to a change in circumstances, we
would be permitted to continue to produce, and sell, Mirel, and ADM would be required to perform fermentation services for us for a period of time following the termination (subject to certain payment
obligations to ADM).

Joint Venture PhaseWhen market demand exceeds the capacity of the Commercial Manufacturing Facility
and the initial license granted by us, ADM has the option to form a new entity with us in order to build additional capacity and expand the commercial operation beyond the limits of the initial
production capacity. The new joint venture entity would be owned equally by Metabolix and ADM Polymer. Under certain circumstances, if ADM does not exercise its option, then Metabolix would have an
opportunity to manufacture and sell Mirel independent of the Commercial Alliance.

Target Markets for Mirel

We believe Mirel possesses comparable functional properties to petroleum-based polymers serving applications that cover as much as half of the global polymer
market. Our strategy is to enter this market with premium priced products that address specialized segments that can be served competitively by Mirel's distinctive properties. Telles will sell Mirel
in pellet form (for further processing and re-sale as finished goods or components by customers) and may also sell Mirel in densified form, as a blend with other biodegradable materials,
or in other forms as may be determined by Telles and its customers.

We
are initially targeting three market segments: branded products, regulated markets and products requiring biodegradability as a key functional property.

Branded ProductsThe market for branded products and services with attributes of environmental
responsibility and sustainability is an emerging business opportunity. We are branding our biobased plastic under the name Mirel, and we expect that by co-branding products that use Mirel,
we and our customers will be able to jointly promote environmental sustainability.

We
believe that producers are positioning products as environmentally responsible or superior to gain a competitive advantage as they believe consumer preferences are shifting. We
believe the use of Mirel in branded products either directly or for packaging will facilitate and enhance our customers' efforts to exploit this trend.

Regulated MarketsRegulatory action, such as bans, taxes, subsidies, mandates and initiatives, to
encourage substitution of renewable and sustainable materials for petroleum-based incumbents is increasing. Examples of this can be found in the following jurisdictions:



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In
the geographic segments where regulatory drivers exist, Mirel can meet requirements for biobased content or biodegradability that favor Mirel over conventional petroleum-based
plastics. In addition, producers are now anticipating regulatory change and are initiating programs to introduce sustainable materials into their products prior to or in an attempt to forestall
implementation of such regulation. We believe that as awareness of our practical and affordable alternative grows, the pace of regulatory change may accelerate.

Products Requiring BiodegradabilityThere are a number of applications for which biodegradability will
be a key functional property. These markets consist largely of agricultural, erosion control, and construction applications, where the employment of implements and materials that decay naturally after
use can increase efficiency, simplify cleanup and reduce disposal cost. While there are biodegradable offerings on the market today, we do not believe that existing products provide both the robust
performance in use combined with the degradation in a variety of conditions that Mirel offers. For example, some materials break down quite rapidly when exposed to water and would not be durable
enough if used in agricultural applications. Other materials will only degrade in hot compost environments. Mirel, however, can be engineered to provide months of use in the environment and then be
plowed under the soil or left on-site to decompose over time in normal soil conditions where microbes are present. Potential applications in this segment include:



Applications for Mirel

To approach these market segments, we are conducting product and business development activities, including working with potential customers to determine their
specific needs, and we have begun the process of qualifying our material for a variety of customer applications. We are actively developing customer prospects to qualify our products in the following
application areas:

|Segment                  |  | Examples of Application
|------------------------ |  | -----------------------
|
|Packaging                |  |                       
|                         |  |                       
|                        
|Consumer Products        |  |                       
|                         |  |                       
|                        
|Electronics              |  |                       
|                         |  |                       
|                        
|Agriculture/Horticulture |  |                       
|                         |  |                       
|                         |  |                       
|                        
|Marine/Water             |  |                       
|                        

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To
serve these market opportunities, we have developed formulations of Mirel that can be processed in conventional plastics processing equipment for injection molding, blown and cast
film, sheet, extrusion coating, and thermoforming. We also have plans to develop additional formulations to address the market segments above. We are presently working on a $1.0 million
contract awarded by the Strategic Environmental Research and Development Program of the U.S. Department of Defense to develop formulations suitable for packaging foam and stretch pallet wrap. We also
have plans to explore formulations for producing blow molded bottles and fiber. To support these efforts, we have expanded our product development team. In some cases we may also enter into joint
development arrangements with customers who have expertise in specific product applications.

Marketing and Sales

We are leading the marketing and sales effort on behalf of Telles. Sales of Mirel are highly technical in nature. Our expertise in polymer science combined with
our familiarity with the properties of the Mirel family of bioplastics is essential to developing resin grades that meet specific customer requirements. In some cases, we may coordinate joint
marketing and sales efforts with ADM, taking advantage of
ADM's strong customer base. ADM is a world leader in agricultural processing and fermentation technology and is one of the world's largest processors of corn, soybeans, wheat and cocoa. ADM is also a
leader in the production of ethanol and corn sweeteners.

It
is our goal to establish customer relationships, that will lead to substantial purchase commitments for a portion of the Commercial Manufacturing Facility's initial output when
production starts. To that end, we have built a pipeline of customer projects in different applications to maximize our opportunities to fill the plant to capacity.

We
are currently focusing our efforts on applications in the areas of injection molding, cast and blown film, sheet, and thermoforming. We have provided material to customer prospects
for initial testing. Some of our customer prospects have progressed to evaluation of additional volumes of Mirel in larger scale product qualification trials and test marketing, which in turn may lead
to product adoption and sales. During 2007, Target test marketed gift cards made using Mirel in 129 of its stores and then introduced gift cards made using Mirel in all of its 1,600 stores in time for
the 2007 holiday shopping season.

We
are branding our biobased plastics under the name Mirel, and, where possible, we intend to co-brand the products that incorporate Mirel. Prospective buyers of Mirel are
seeking not only the functional properties Mirel provides, but also the ability to promote their use of sustainable and renewable products. Co-branding enables our customers to convey
environmental responsibility to their end consumers by referencing our brand with their product.

Mirel
is being positioned as a specialty material that can serve both a functional need (which petroleum-based polymers may satisfy) and consumer preference for environmental
responsibility (which petrochemical-based polymers cannot address). Consequently, we expect Telles to price Mirel as a specialty product at a premium to the prices of large volume commodity polymers
but comparable to a number of specialty polymers. The business model for positioning products with an environmental benefit at higher price points is increasingly prevalent with examples in several
different industries ranging from retail food stores to gasoline-electric hybrid automobiles.

On
behalf of Telles, we intend to sell Mirel into markets around the globe, with an initial focus on North America, Europe and Japan. We intend to establish marketing and sales efforts
either directly or through regional alliances with local firms in the Far East and Europe. We will also consider selected market development arrangements in certain discrete segments (fiber, for
example) where there may be advantages to working closely with a market leader in that segment.

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Competition

The plastics market is large, with many established players. The market has grown around the chemical processing of oil and natural gas, and is concentrated in
the conventional, non-biodegradable petroleum-based segment.

Established
players in this segment include Dow Chemical, DuPont, BASF, Bayer, SABIC and Mitsubishi Chemical, among many others. The price of conventional petroleum-based plastic is
volatile, as it is dependent on petroleum as a key manufacturing input. In addition, the non-biodegradability of conventional petroleum-based plastics makes them persistent in and harmful
to the environment and creates significant waste.

A
few companies, such as DuPont, have taken steps toward plastics based on renewable resources, and are commercializing plastics that use building blocks derived from renewable resources
as components. These products remain primarily fossil carbon based and are not biodegradable. Other producers of petroleum-based plastics, including BASF, Mitsubishi Chemical, and DuPont, now produce
certain petrochemical grades that are biodegraded in industrial compost environments, but are otherwise persistent in the environment and are still subject to the volatility of oil and natural gas
prices.

Our
most comparable competitors are in the biodegradable, renewable resource based plastic segment, within which there are three distinct technologies: PHA, polylactic acid (PLA) and
starch-based biodegradables. Just as a wide variety of different petroleum-based plastics now serve the needs of the market; we believe that these three product classes are more complementary than
competitive. We believe that of these three product classes, Mirel offers the broadest range of properties and processing options, and will address the largest proportion of opportunities as an
environmentally attractive yet functionally equivalent alternative to conventional petroleum-based plastics. Unlike PLA and most starch-based biodegradables, Mirel can:



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Other
companies active in the PHA plastics segment include Kaneka, Tainan, and minor producers in Brazil. The key players in PLA and starch based biodegradable plastics are NatureWorks,
Mitsui Chemical, Toyota, Novamont and Stanelco.

|Biodegradability  |  | Fossil Carbon Based Plastics         |  | Biomass Renewable Resource Based Plastics                                                                 
|----------------- |  | ------------------------------------ |  | ----------------------------------------------------------------------------------------------------------
|Biodegradable     |  | Synthetic Biodegradable              |  | PHA:                                                                                                      
|                  |  | Polyesters:                          |  | -Metabolix (Mirel)                                                                                       
|                  |  | -DuPont (Biomax)                    |  | -Kaneka (PHBH)                                                                                            
|                  |  | -BASF (Ecoflex)                     |  | -Tianan (PHBV)                                                                                            
|                  |  | -Mitsubishi Chemical                 |  |                                                                                                           
|                  |  | -Showa Denko (Bionolle)             |  | PLA:
-Cargill/Teijin (NatureWorks)
-Mitsui Chemical (Lacea)
-Toyota                                     
|                  |  |                                      |  | Starch-based Biodegradables:
-Novamont (MaterBi)
-Stanelco (Starpol)                                    
|                  |  |                                      |  |                                                                                                           
|Non-Biodegradable |  | Traditional petroleum-based products |  | -DuPont (Sorona (~30% biobased))
-Dow Chemical (Soybean Polyurethanes)
-Arkema (Nylon 11)
-Braskem (HDPE)

We
believe that the principal advantages of our products will be the use of renewable feedstocks and biodegradability combined with their performance when compared to our alternative
products. We believe our Mirel products compare well against other biodegradable plastics when judged on the following factors:



Research Programs

We believe Mirel is the first of several attractive opportunities we will pursue to meet the world's plastic, chemical and energy needs through the biological
conversion of renewable and sustainable agricultural feedstocks.

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Biomass Biorefinery Programs

We are developing a breakthrough technology to produce plastics directly in plants. This effort builds on our success in creating high productivity microbial
bio-factories and offers the potential to produce biobased plastics at comparable or lower costs than the current cost of producing commodity petroleum-based plastics such as polyethylene,
polypropylene, and polystyrene. We believe we can engineer a system that co-produces plastics along with biomass for conversion to energy (such as steam, electricity, ethanol or
biodiesel). This concept, called a "biomass biorefinery," is based on the co-production of energy and higher value biobased plastic. It is analogous to today's energy/petrochemical
industry where synthetic plastics are derivative value-adding products to the production of energy from petroleum and natural gas. We believe the co-production of biobased plastics with
energy in one system will offer superior economic value and productivity to a single product system. We received significant funding from the United States Government and BP for these efforts, and we
have collaborations with the Donald Danforth Plant Science Center and the Australian Cooperative Research Centre to further our research in this area. Our goal is to reach field trial demonstrations
within the next three to four years.

We
believe we are a leader in the science and technology related to the transformation of several potentially important industrial biorefinery crops, including switchgrass. Precise
insertion of novel pathways in plants is challenging due to the tendency of plants to eliminate foreign genes and due to the lengthy time required for cross-breeding of plant generations having new
genes. We have developed several proprietary approaches to more efficiently introduce complex, multi-gene, multi-step pathways into switchgrass and we expect that these
approaches will have value in other areas in addition to production of plastics.

We
believe that our biomass biorefinery program offers the potential to improve the economics of producing not only biobased plastics, but also bioenergy. Polymer production economics
can be improved because the manufacture of the material will take place within the plant. With our current fermentation process, starch, a precursor to our feedstock (i.e. corn sugar), is
produced within the plant.
Considerable costs are incurred extracting starch, converting it to corn sugar feedstock, and then converting that feedstock to Mirel. Through direct production in switchgrass, oilseeds or other
crops, we can eliminate those conversion costs and potentially achieve production economics comparable to those of general agricultural products, which are inexpensive. It is also commonplace within
both the agricultural and the energy industries to produce a variety of co-products from raw materials to maximize value. As with a barrel of oil that is converted to both gasoline and
plastic, or a bushel of corn that is converted to sweetener and other products, we believe that a plant variety that co-produces both plastics and energy can have more value than one that
does not.

While
the cost of producing plastics in plant crops may be considerably lower than the cost of producing these materials by fermentation, we believe the introduction of plant based
materials can significantly expand the market for fermentation based materials. The scale and complexity of agriculturally producing plastics will limit the grades of material produced to just a few.
Conversely, fermentation based manufacturing allows many grades to be produced with a variety of property sets. Together, low cost plant based material can be blended with fermentation material to
achieve an optimal balance between cost and performance.



Our first program focuses on switchgrass, a commercially and ecologically attractive, non-food energy crop that is indigenous to North America.
Switchgrass is an attractive biomass to energy crop that is generally considered to be a leading candidate for cellulose-derived production of ethanol and other biofuels. It is a high density
perennial crop that can grow on marginal land and does not require substantial inputs in terms of water or fertilization. It has the capability of sequestering significant amounts of carbon dioxide
from the atmosphere in its root systems.

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We have already achieved several significant milestones in this program and can produce small amounts of plastics in switchgrass. Our research is currently focused on increasing plastic
production levels to amounts we believe would be commercially viable.



We are also developing sugarcane for co-production of biobased and biodegradable plastic within the leaves and stems of that plant. In 2007 we entered
into a research collaboration with Australia's Cooperative Research Centre for Sugar Industry Innovation through Biotechnology (CRC SIIB) to develop sugarcane strains for the production of plastics.
Sugarcane is currently the premier biomass crop for biofuels, and we believe it can be developed to produce an advanced biorefinery feedstock for the production of bioplastics, chemicals and energy,
significantly expanding Metabolix's global reach. While switchgrass is well suited for the North American climate, sugarcane will be ideal for more tropical climate zones.



Industrial oilseeds represent the third crop system to which Metabolix is applying its patented technology. We have initiated a program to develop an advanced
industrial oilseed crop for co-production of bioplastics along with vegetable oil, which could be used for non-food applications such as biodiesel fuel or oleochemicals.
Oilseeds are the primary feedstock for the more than 250 million gallons of biodiesel produced annually in the United States, and the co-production of bioplastics promises to
improve the economics of this crop industry. Recently, we established a research collaboration with noted oilseed experts at the Donald Danforth Plant Science Center, a leading
not-for-profit research institute in St. Louis, Missouri. The successful achievement of the technical goals of this program would result in stable expression of biobased
plastics directly in oilseed crops. Metabolix plans to assemble a team of scientists in St. Louis to work closely with Danforth's principal investigators. The Danforth Center has extensive
experience in oilseed technology. Combining their experience with our patented technologies could expedite the commercialization of multiple products in oilseed crops. This collaboration is supported
financially by a two year, $1.14 million grant from the Missouri Life Sciences Trust Fund to the Danforth Center.



During 2007, we received an Advanced Technology Program (ATP) award from the U.S. Department of Commerce's National Institute of Standards and Technology (NIST).
The $2 million award will be used to develop a commercially viable process for producing biobased chemicals from renewable agricultural products. The ATP program provides
cost-shared funding to industry-led teams, including non-profits and universities, to help advance research and development projects that have the potential to
spark important, broad-based economic or social benefits for the United States. Our award will fund our integrated bio-engineered chemicals (IBEC) program, which is beginning development
of sustainable solutions for widely-used four-carbon industrial chemicals. The program is designed to create a class of biobased routes for producing important industrial
chemical intermediates, reducing our dependence on fossil feedstocks and providing the nation with competitive advantages in polymers, chemicals and agriculture, all while reducing adverse
environmental impacts.

Our
IBEC project will seek to bio-engineer microbes to produce polymers similar to Mirel through the fermentation of plant-derived sugars. The produced polyesters will then
be converted into a variety of four-carbon (C4) industrial chemicals. Today, C4 chemicals are produced almost entirely from fossil-based hydrocarbons such as natural gas, oil or coal and
are used in products such as auto parts, spandex, polyurethanes, engineering resins and solvents. Global demand for C4 industrial chemicals is estimated at 2.5 billion pounds annually, and
growing at a rate of 4 to 5 percent a year.

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Our Technology and Product Development Process

We believe we have one of the most advanced capabilities to perform metabolic pathway engineering in the world and that we are skilled in our ability to integrate
the biotechnology we develop into large scale industrial production processes. We believe that our advanced capabilities will allow us to:



Biology and Genetic EngineeringWhile most biotechnology products today involve identifying a single
gene to produce one protein, we have identified and chromosomally inserted a series of genes to produce several proteins and have done so in such a way that they are expressed to execute the right
reactions at the right times. We are not aware of other efforts in this field that have executed metabolic pathway engineering to this level of sophistication and with the level of success that we
have achieved. The illustration below shows a schematic of our multi-gene system to produce Mirel.

GRAPHIC

We
have also developed core competencies in plant transformation and the development of advanced multigene expression technologies for introducing multiple traits into biomass plant
crops.

Industrial Fermentation Process EngineeringWe have tightly integrated our fermentation
scale-up research capabilities with our genetic engineering capabilities to create a feedback loop where data from fermentation experiments can readily influence microbial design and where
microbial engineering approaches can guide the fermentation group to structure the optimal protocols (recipes) for running fermentations.

Chemical Process EngineeringThe third element of our technology and product development process
involves process chemistry and chemical engineering to separate the polymer from the biological cell material once fermentation is complete. We have a dedicated team that has developed a proprietary
process for Mirel recovery at the industrial scale. We have invented a process that achieves a high level of purity without damaging the polymer and that we believe can be implemented cost effectively
at commercial scale. We have successfully demonstrated our ability to efficiently isolate polymer from the cell debris, clean and dry the polymer and prepare it for processing into pellets.

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Polymer Science and Product DevelopmentThe final elements of our product development involve
tailoring the polymer to provide the product properties and meet the processing requirements for specific customer applications and then compounding that material for delivery to customers. Our
product development team has considerable expertise in polymer science and to date has developed prototype formulations for injection molding, blown and cast film, sheet, extrusion coating, and
thermoforming. We will continue to work with our customers to finalize our formulations to commercial specifications. In the future, we have plans to create formulations for blow molding, foam and
fiber.

In
sum, we have successfully integrated capabilities in biology, genetics, fermentation process engineering, chemical engineering and polymer science. We believe this integrated set of
capabilities will be a source of competitive advantage. These same capabilities are being applied to our plant crop programs where we intend to develop an industrial system to co-produce bioplastics
with cost advantaged biomass for bioenergy. We believe our capabilities can also be applied successfully to other biobased plastics, chemicals and energy projects.

Research & Development

We have a long standing and ongoing research and development program that is designed to exploit our systems approach to industrial biotechnology. We believe that
the technical challenges of successfully deploying biotechnology in industrial settings are high and that systems developed in an integrated and comprehensive environment will generate the optimum
possible results and provide us with a competitive advantage. Furthermore, we believe fully developed, commercially viable processes will command higher values from potential partners than individual
components or technologies.

The
primary goals of our research and development program are to:



Our
research and development efforts are presently focused in three critical areas:

Microbial FermentationWe have ongoing strain development efforts to develop microbes that can produce
higher yields of Mirel at lower cost than our current strains. We have identified specific projects that we believe will allow us to approach the maximum theoretical yield and productivity of these
systems. In addition, we are engaged in strain development work to facilitate production of other specific Mirel compositions that will allow us to extend the range of market applications we can
address. This work will be combined with our ongoing product development effort, which is broadening the range of formulations we can make with our lead polymer composition.

Polymer Producing PlantsWe are developing a technology to produce plastics directly in plants,
including switchgrass, sugarcane and oilseed. This effort builds on our success in creating high productivity microbial biofactories and may enable the production of biobased plastics with economics
that are as favorable as, or more favorable than, general purpose commodity plastics such as polyethylene, polypropylene, and polystyrene. We have successfully achieved the milestone of polymer

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production
in switchgrass in small amounts and are now working to increase production levels to amounts that would be commercially viable.

New Systems and ProductsWe plan to further apply our platform technologies to other commercial
opportunities in the area of biobased plastics, chemicals and energy.

As
of December 31, 2007, we employed 49 personnel conducting research and development for our programs. Among our research staff, 21 hold Ph.D.s and 24 hold masters or bachelors
degrees in their respective disciplines. Our staff has expertise in the following areas: microbial genetics, bioinformatics, metabolic engineering, systems biology, plant genetic engineering,
fermentation process engineering, chemical engineering, and polymer science and engineering.

Intellectual Property

Our continued success depends in large part on our proprietary technology. We rely on a combination of patent, copyright, trademark and trade secret laws, as well
as confidentiality agreements, to establish and protect our proprietary rights.

We
own approximately 390 issued patents and 120 patent applications world wide, and we have licensed from third parties approximately 70 issued patents and 10 patent applications world
wide. These patents cover, among other things, the fundamental biotechnology needed to produce Mirel as well as compositions, processes and derived products. The licensed patents and patent
applications include patents covering our core technology that are owned by Massachusetts Institute of Technology and exclusively licensed to us. Under the MIT licensing agreement, we currently pay
annual license fees. In addition, under this licensing agreement, we are obligated to pay royalties on sublicensing revenue and sales of products, if any, covered by the licensed patents.

Our
patents are directed to compositions of polymers, genes, vectors, expression systems in plants and microbes, devices, coatings, films, as well as methods of manufacture and use. The
terms of such patents are set to expire at various times between 2009 and 2022.

We
will continue to file and prosecute patent applications when and where appropriate to attempt to protect our rights in our proprietary technologies. It is possible that our current
patents, or patents which we may later acquire, may be successfully challenged or invalidated in whole or in part. It is also possible that we may not obtain issued patents for our pending patent
applications or other inventions we seek to protect. In that regard, we sometimes permit certain intellectual property to lapse or go abandoned under appropriate circumstances, and due to
uncertainties inherent in prosecuting patent applications, sometimes patent applications are rejected and we subsequently abandon them. It is also possible that we may develop proprietary products or
technologies in the future that are not patentable or that the patents of others will limit or altogether preclude our ability to do business. In addition, any patent issued to us may not provide us
with any competitive advantages, in which event we may abandon such patent.

Our
registered U.S. trademarks includeMetabolix,Biopol, and Where Nature Performs. U.S. registration
applications for our marksMirel, A Miracle of Nature, Telles,
Bio-industrial Evolution, the Metabolix logo and the Mirel logo are pending. Our marksMetabolix, Mirel, Telles, Where Nature
Performsand certain other trademarks have been registered in selected foreign countries.

Our
means of protecting our proprietary rights may not be adequate, and our competitors may independently develop technology that is similar to ours. Legal protections afford only
limited protection for our technology. The laws of many countries do not protect our proprietary rights to as great an extent as do the laws of the United States. Despite our efforts to protect our
proprietary rights, unauthorized parties have in the past attempted, and may in the future attempt, to copy aspects of our products or to obtain and use information that we regard as proprietary.
Third parties may also design around our proprietary rights, which may render our protected products less valuable, if the

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design-around
is favorably received in the marketplace. In addition, if any of our products or the technology underlying our products is covered by third-party patents or other intellectual property
rights, we could be subject to various legal actions. We cannot assure you that our products do not infringe patents held by others or that they will not in the future.

Litigation
may be necessary to enforce our intellectual property rights, to protect our trade secrets, to determine the validity and scope of the proprietary rights of others, or to
defend against claims of infringement or invalidity, misappropriation, or other claims. Any such litigation could result in substantial costs and diversion of our resources. Moreover, any settlement
of or adverse judgment resulting from such litigation could require us to obtain a license to continue to use the technology that is the subject of the claim, or otherwise restrict or prohibit our use
of the technology. Any required licenses may not be available to us on acceptable terms, if at all.

Employees

As of December 31, 2007, we had 77 full-time employees. Of those employees, 49 are in research and development, 9 are in marketing, and 19 are
in general and administration. Most of our employees are located in Massachusetts. None of our employees are subject to a collective bargaining agreement. We consider our relationships with our
employees to be good.

Corporate and Investor Information

Our company was incorporated in Massachusetts in June 1992 under the name Metabolix Inc. In September 1998, we reincorporated in Delaware. Financial and
other information about our company is available on our website (http://www.metabolix.com). The information on our website is not incorporated by reference into this annual report on
Form 10-K and should not be considered to be part of this annual report on Form 10-K. We make available on our website, free of charge, copies of our annual
report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those
reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 as soon as reasonably practicable after filing such material electronically or otherwise
furnishing it to the Securities and Exchange Commission.

ITEM 1A.    RISK FACTORS

Our operations and financial results are subject to various risks and uncertainties that could have a materially adverse affect on our business, financial
condition, results of operations and the trading price of our common stock.

Risks Relating to Our Business

We may not be able to successfully manufacture Mirel at commercial scale in a timely or economical manner.

We are currently producing Mirel using our fermentation platform in relatively small quantities, at pre-commercial scale, for use in marketing
activities, including conversion into end-products for test marketing by our customers. The current and anticipated methods for manufacturing biobased plastics, both by fermentation and in
crops, and the anticipated methods for producing chemicals and energy, are highly complex processes in which a variety of difficulties may arise. We may not be able to resolve any such difficulties in
a timely or cost effective fashion, if at all. We cannot be sure of the cost of producing Mirel at commercial scale by fermentation. We cannot assure you that we will be able to successfully
manufacture Mirel at a commercial scale in a timely or economical manner.

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Since construction of the commercial manufacturing facility for the production of Mirel (referred to as the Commercial Manufacturing Facility) is not yet complete, manufacturing costs at
such facility are unknown and may ultimately be higher than we expect. While we believe that manufacturing costs will be reduced over time as we gain manufacturing know-how, we cannot be
sure that we can manufacture Mirel in an economical manner. If we, in connection with our alliance with ADM, fail to commence production in a timely manner or to develop manufacturing capacity and
experience, fail to continue to contract for manufacturing on acceptable terms, or fail to manufacture Mirel economically on a commercial scale or in commercial volumes, our commercialization of Mirel
and our business, financial condition and results of operations will be materially adversely affected.

We may not be successful in the development of commercial formulations of Mirel.

Mirel can be produced in a large number of different formulations. Each formulation results in a material that has different performance attributes, such as
flexibility, hardness or clarity. As such, different formulations will have utility in different commercial applications. Formulation development is a time-consuming and expensive
activity. The development of new formulations requires significant and lengthy product development efforts, including planning, designing, developing and testing at the technological, product and
manufacturing-process levels. These activities require us to make significant investments. Although there are many potential applications for Mirel, our resource constraints require us to focus on
specific formulations and to forgo other opportunities. We expect that one or more of the potential formulations we choose to develop will not be technologically feasible or will not achieve
commercial acceptance, and we cannot predict which, if any, of our formulations we will successfully develop or commercialize.

We may not be successful in the development of plant crops for production of plastics.

In addition to our development and scale-up work to produce Mirel through fermentation, we are also at an early stage developing the technology and
processes to produce biobased plastics in plant crops, including switchgrass, sugar cane and oilseed. We are currently focused on the genetic and process engineering required in connection with such
programs. Because we will be funding much, or perhaps all, of the development of such programs, there is a risk that we may not be able to continue to fund such programs to completion or to provide
the support necessary to distribute, market and sell resulting products, if any, on a worldwide basis. These development programs will consume substantial resources.

To
date our efforts to produce biobased plastics in crops has focused primarily on the genetic engineering required to cause the crops to aggregate plastic in the plant mass during the
life cycle of the plant. We have not yet achieved a high enough concentration of plastic in commercial crops to make the current technology and process economically feasible at a commercial scale. If
we are able to complete the genetic engineering work that leads to such aggregation at acceptable levels, we will also need to perform additional process engineering so that plastic can be recovered
from the harvested crops, processed and formulated as required to constitute a marketable product. Such engineering work may not be successful and we may not have the financial resources to fund such
work.

In
connection with these efforts, we are acquiring know-how and developing technology internally that will be useful in efforts to engineer the crops so that upon completion
of the harvest and recovery of biobased plastic, the residual material, or biomass, can be readily converted into energy through, for example, burning the biomass with coal or other conventional fuels
or by converting the biomass into a liquid fuel such as ethanol. These development efforts are at a very early stage. The technological challenges associated with these programs are extraordinary and
we may not be able to overcome these challenges. We will be required to invest a significant amount over a long period of time to complete such development work, if it can be completed at all.

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We
cannot predict the costs of producing biobased plastics in plant crops, given the stage of development of this program. The anticipated methods for manufacturing biobased plastics in
crops, and for producing chemicals and energy, are highly complex processes in which a variety of difficulties may arise. Given this uncertainty, we may not be able to successfully produce biobased
plastics in plant crops in an economical manner.

If ADM does not successfully build the Commercial Manufacturing Facility on time and on budget, our revenues and the distribution of profits, if any, to us will be delayed.

The cost of planning, designing, constructing and operating the Commercial Manufacturing Facility being developed to serve the alliance with ADM, and the cost of
ancillary facilities and services related to the production of Mirel by Telles, will be very significant. ADM will be advancing a disproportionate share of the financial capital needed for such
activities and, therefore, under our agreement all profits, after payment of all royalties, reimbursements and fees, from Telles will first be distributed to ADM until ADM's disproportionate
investment in Telles has been returned. The timing of product availability from the Commercial Manufacturing Facility has been projected to be December 2008. However, much of the current construction
work at Clinton has been impacted by this year's harsh Midwest winter, and ADM is in the process of re-evaluating construction timing for the Clinton project. If there are difficulties, delays or
other unforeseen issues with the construction and start-up of the
Commercial Manufacturing Facility, the cost of such activities will almost certainly increase, we may incur unreimbursed sales and marketing costs until commercial sales from the Commercial
Manufacturing Facility begin, and the revenue from sales, if any, of Mirel and the distribution of profits, if any, to us will be delayed.

We may not be able to develop manufacturing capacity sufficient to meet demand in an economical manner or at all.

We cannot assure you that we will have the necessary funds to finance the development of the Commercial Manufacturing Facility or that ADM will pay its share of
the costs incurred by Telles, or that we will be able to develop this manufacturing infrastructure in a timely or economical manner, or at all. ADM could experience financial or other setbacks
unrelated to our collaboration that could, nevertheless, adversely affect us. Also, the expansion of a commercial-scale manufacturing facility is complex and expensive. If demand for Mirel increases
beyond the scope of the Commercial Manufacturing Facility being built to serve Telles, we may incur significant expenses in the expansion and/or construction of manufacturing facilities and increases
in personnel in order to increase manufacturing capacity.

We may not achieve market acceptance of our products.

We do not currently have customers for commercial quantities of Mirel. Market acceptance of our products will depend on numerous factors, many of which are
outside of our control, including among others:



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Our
customer prospects are currently evaluating and performing tests on Mirel prior to making any large-scale purchase decisions. We may not be able to successfully demonstrate that our
plastics have properties comparable or superior to those of environmentally sustainable competitors or similar to conventional petroleum-based plastics. There can be no assurance that products based
on our technologies will be perceived as being comparable or superior to existing products or new products being developed by competing companies or that such products will otherwise be accepted by
consumers. The market for our biobased plastics may not be willing to support premium prices to purchase environmentally sustainable plastics. If there is not broad market acceptance of our products,
we may not generate significant revenues.

We have limited marketing and sales experience and capabilities, which may make the commercialization of our products difficult.

We currently have limited marketing and sales experience and capabilities and virtually no distribution experience or capabilities. We will, in some instances,
rely significantly on sales, marketing and distribution arrangements with our collaborative partners and other third parties. For example, we will rely on ADM Polymer to participate in and execute
important aspects of the distribution of Mirel manufactured by ADM and we may use the ADM client base for marketing purposes. Our future revenues will be materially dependent upon the success of the
efforts of these third parties and our ability to augment our own resources by identifying and hiring new employees. If we are unable to develop or obtain access to sales and marketing expertise,
sales of our products, if any, may be adversely affected.

We rely heavily on ADM and may rely heavily on future collaborative partners.

We entered into a strategic alliance with ADM to commercialize our first technology platform, and we may enter into strategic partnerships with other
corporations:



The
arrangement with ADM is, and arrangements with future collaborative partners may be, critical to our success in manufacturing our products and selling such products profitably. ADM
and, we anticipate, our other future collaborative partners, will be permitted by contract to terminate their agreements with us for no reason and on limited notice. We and ADM have the ability to
terminate the Commercial Alliance Agreement with 30 days notice if, based upon a change in circumstances beyond the reasonable control of the other party, the projected financial return from
the commercial alliance is deemed by the other party to be either too uncertain or inadequate. We and ADM also have the ability to terminate the Commercial Alliance Agreement with 90 days
notice in the case of a breach by the other party. We cannot guarantee that any of these relationships will be entered into, or if entered into, will continue. Failure to make or maintain these
arrangements or a delay or failure in a collaborative partner's performance under any such arrangements would have a materially adverse affect on our business and financial condition.

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We
cannot control our collaborative partners' performance or the resources they devote to our programs. We may not always agree with our partners nor will we have control of our
partners' activities on behalf of any alliance. As a result of these disagreements, the performance of our programs may be adversely affected, programs may be delayed or terminated, or we may have to
use funds, personnel, equipment, facilities and other resources that we have not budgeted to undertake certain activities on our own. Performance issues, program delay or termination or unbudgeted use
of our resources may have a material adverse effect on our business and financial condition.

Disputes
may arise between us and a collaborative partner, including possible disputes regarding the ownership of technology and other intellectual property developed during a
collaboration or other issues arising out of the collaborative agreements. Such a dispute could delay the program on which we are working or could prevent us from obtaining the right to commercially
exploit such developments. It could also result in expensive arbitration or litigation, which may not be resolved in our favor. Our collaborative partners could merge with or be acquired by another
company or experience financial or other setbacks unrelated to our collaboration that could, nevertheless, adversely affect us.

Our success will be influenced by the price of petroleum, the primary ingredient in conventional petroleum-based plastics, relative to corn sugar, the primary ingredient in
Mirel.

Our success will be influenced by the cost of Mirel relative to petroleum-based plastics. The cost of petroleum-based plastic is in part based on the price of
petroleum. Mirel is primarily manufactured using corn sugar, an agricultural feedstock. ADM currently supplies all required agricultural feedstock as part of our strategic alliance. In past years, the
prices of petroleum and corn have diverged dramatically. Recently, the price of corn has increased. If the price of corn or corn sugar were to dramatically increase or if the price of petroleum
decreases, Mirel may be less competitive relative to
petroleum-based plastics. While we expect to be able to command a premium price for our environmentally sustainable products, a material decrease in the cost of conventional petroluem-based plastics
may require a reduction in the prices of our products for them to remain attractive in the marketplace. In such instance, if corn prices remain stable or increase, we may be required to price our
products at a level that causes us to operate at a loss.

Our future profitability is uncertain, and we have a limited operating history on which you can base your evaluation of our business.

We have had net operating losses since being founded in 1992. At December 31, 2007, our accumulated deficit was approximately $94 million. Since
1992, we have been engaged solely in research and development and other pre-commercial and early-stage commercial activities. As a part of our strategic alliance, ADM Polymer is
constructing the commercial scale Commercial Manufacturing Facility for Mirel. ADM is in the process of re-evaluating construction timing for this project, and we expect that it will require an
additional period of time to ramp up production. Until such time, we will not have significant revenues from sales of Mirel. Because we have a limited history of commercial operations and we operate
in a rapidly evolving industry, we cannot be certain that we will generate sufficient revenue to operate our business and become profitable.

Our
product revenue will be dependent on the successful completion of the scale-up and commercialization of Mirel through our strategic alliance with ADM, and other future
products through other partnerships or joint ventures, if any, with third parties and separately for our own account. In addition, if we are unable to develop, commercialize and further advance
technologies relating to the production of biobased plastics in crops and other products, or if sales of Mirel or such other products are not significant, we could have significant losses in the
future due to ongoing expenses to perform research and product development and our inability to obtain additional research and development funding in connection with such products.

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In addition, the amount we spend will impact our ability to become profitable and this will depend, in part, on:



We
may not achieve any or all of these goals and, thus, we cannot provide assurances that we will ever be profitable or achieve significant revenues. If we fail to achieve profitability
or significant revenues, the market price of our common stock will likely decrease.

We may need to secure additional funding and may be unable to raise additional capital on favorable terms or at all.

We have consumed substantial amounts of capital since our inception in 1992 for our research and development activities. Although we believe our unrestricted
cash, cash equivalents and short-term investments of approximately $109 million as of December 31, 2007, plus anticipated payments from the strategic alliance with ADM of
approximately $1.6 million per calendar quarter through 2008, will be sufficient to fund our anticipated cash requirements for at least the next 24 months, we may require significant
additional financing in the future to fund our operations. We cannot assure you that additional financing will be available on terms acceptable to us, or at all. Until we can generate significant
continuing revenues, we expect to satisfy our future cash needs through the use of existing cash resources and through strategic collaborations, governmental research grants, and/or by licensing all
or a portion of our programs or technology. We may also seek additional funds through private or public sales of our securities, or debt financings. If funds are not available, we may be required to
delay, reduce the scope of, or eliminate one or more of our research or development programs or our commercialization efforts. Further, additional funding may significantly dilute existing
stockholders.

If we lose key personnel or are unable to attract and retain necessary talent, we may be unable to develop or commercialize our products under development

We are highly dependent on Oliver Peoples, our Chief Scientific Officer and Johan van Walsem, our Vice President of Manufacturing, Development and Operations.
Dr. Peoples and Mr. van Walsem possess unique information related to our research and manufacturing operations. Dr. Peoples is one of our founders and has led and directed all of
our scientific research and development programs. Dr. Peoples has such particular knowledge in the research, development and intellectual property aspects in connection with our technology
platforms, that in the case of the loss of his services we would be unable to readily find a suitable replacement with comparable knowledge and experience necessary to further our research and
development programs. Mr. van Walsem directs our pre-commercial manufacturing operation and has been instrumental in developing manufacturing know-how sufficient to
operate our pre-commercial scale manufacturing plant. Mr. van Walsem has also been directing the transfer of our technology to ADM for use in the Commercial Manufacturing Facility.
The loss of Mr. van Walsem's services to us would be difficult to readily replace and may adversely impact the achievement of our objectives. Our success depends largely upon the continued

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service
of our management and scientific staff and our ability to attract, retain and motivate highly skilled technical, scientific, management, regulatory compliance and marketing and sales
personnel. Because of the unique talents and experience of many of our scientific, engineering and technical staff, competition for our personnel is intense. The loss of key personnel or our inability
to hire and retain personnel who have required expertise and skills could materially adversely affect our research and development efforts and our business.

We may not be able to adequately protect our trade secrets and other proprietary information, which could limit our ability to compete.

Because we operate in highly technical fields of biotechnology discovery and development, plant science and polymer science, we rely in part on trade secret
protection in order to protect our proprietary technology and processes. However, trade secrets are difficult to protect. We enter into confidentiality and intellectual property assignment agreements
with our employees, consultants, outside scientific collaborators, and other advisors. These agreements generally require that the other party keep confidential and not disclose to third parties all
confidential information developed by the party or made known to the party by us during the course of the party's relationship with us. These agreements also generally provide that inventions
conceived by the party in the course of rendering services to us will be our exclusive property. However, these agreements may not be honored and may not effectively assign intellectual property
rights to us. Enforcing a claim that a party illegally obtained and is using our trade secrets is difficult, expensive and time consuming and the outcome is unpredictable. In addition, courts outside
the United States may be less willing to protect trade secrets. The failure to obtain or maintain trade secret protection could adversely affect our competitive position.

Intellectual property protection for our products is important and uncertain.

Our commercial success will depend in part on our obtaining and maintaining patent, trade secret and trademark protection of our technologies in the United States
and other jurisdictions, as well as successfully enforcing this intellectual property and defending this intellectual property against third-party challenges. We will only be able to protect our
technologies from unauthorized use by third parties by keeping them as trade secrets or to the extent that valid and enforceable intellectual property protections, such as patents, cover them. In
particular, we place considerable emphasis on obtaining patent protection for significant new technologies, products and processes in the United States and in foreign jurisdictions where we plan to
use such technologies. Legal means may afford only limited protection and may not adequately protect our rights or permit us to gain or keep our competitive advantage. Foreign jurisdictions may not
afford the same protections as U.S. law, and we cannot ensure that foreign patent applications will have the same scope of the U.S. patents.

Our
patent position involves complex legal and factual questions. Accordingly, we cannot predict the breadth of claims that may be allowed or enforced in our patents or in third-party
patents. For example:



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Patents
may not be issued for any pending or future pending patent applications owned by or licensed to us, and claims allowed under any issued patent or future issued patent owned or
licensed by us may not be valid or sufficiently broad to protect our technologies. Moreover, we may be unable to protect certain of our intellectual property in the United States or in foreign
countries. Any issued patents owned by or licensed to us now or in the future may be challenged, invalidated, or circumvented, and the rights under such patents may not provide us with competitive
advantages. In addition, competitors may design around our technology or develop competing technologies. We could incur substantial costs to bring suits in which we may assert our patent rights
against others or defend ourselves in suits brought against us. An unfavorable outcome of any such litigation could have a material adverse effect on our business and results of operations.

We
also rely on trade secrets to protect our technology, especially where we believe patent protection is not appropriate or obtainable. However, trade secrets are difficult to protect.
We vigorously pursue confidentiality agreements and contractual provisions with our collaborators, potential customers, employees, and consultants to protect our trade secrets and proprietary
know-how. These agreements may be breached and we may not have adequate remedies for such breach. While we use reasonable efforts to protect our trade secrets, our employees, consultants,
contractors or scientific and other advisors, our potential customers, or our strategic partners may unintentionally or willfully disclose our proprietary information to competitors. If we were to
enforce a claim that a third party had illegally obtained and was using our trade secrets, our enforcement efforts would be expensive and time consuming, and the outcome would be unpredictable. In
addition, courts outside the United States are sometimes unwilling to protect trade secrets. Moreover, if our competitors
independently develop equivalent knowledge, methods and know-how, it will be more difficult for us to enforce our rights and our business could be harmed.

If
we are not able to defend the patent or trade secret protection position of our technologies, then we will not be able to exclude competitors from developing or marketing competing
technologies, and we may not generate enough revenues from product sales to justify the cost of development of our technologies and to achieve or maintain profitability.

We
also rely on trademarks to establish a market identity for our products. We currently have four registered trademarks in the United States and seven pending trademark applications
filed with the U.S. Patent and Trademark Office, in addition to registrations and pending application in foreign jurisdictions. We expect to file additional applications as new trademarks are selected
for our products, but because of the costs of filing and prosecuting such applications, there will be many countries in which we will choose not to file applications. To maintain the value of our
trademarks, we might have to file lawsuits against third parties to prevent them from using trademarks confusingly similar to or dilutive of our registered or unregistered trademarks. Also, we might
not obtain registrations for our pending or future trademark applications, and might have to defend our registered trademark and pending trademark applications from challenge by third parties.
Enforcing or defending our registered and unregistered trademarks might result in significant litigation costs and damages, including the inability to continue using certain trademarks. In the event
that we are unable to continue using certain trademarks, we may be forced to rebrand our products, which could result in the loss of brand recognition, and could require us to devote resources to
advertise and market brands.

A substantial portion of the technology used in our business is owned by or subject to retained rights of third parties.

We have, and expect to have in the future, research and development agreements with academic institutions that retain rights to the developed intellectual
property. The academic institutions generally retain ownership rights over the technology for use in non-commercial academic and research fields, including in some cases the right to
license the technology to third parties for use in those fields. It is difficult to monitor and enforce such noncommercial academic and research uses, and we cannot

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predict
whether the third party licensees would comply with the use restrictions of these licenses. We could incur substantial expenses to enforce our rights against such licensees. In addition, even
though the rights that academic institutions obtain are generally limited to the noncommercial academic and research fields, they may obtain rights to commercially exploit developed intellectual
property in limited instances. Furthermore, under research and development agreements with academic institutions, our rights to intellectual property developed thereunder are not always certain, but
instead may be in the form of an option to obtain license rights to such intellectual property. If we fail to timely exercise our option rights and/or we are unable to negotiate a license agreement,
the academic institution may offer a license to the developed intellectual property to third parties for commercial purposes. Any such commercial exploitation could adversely affect our competitive
position and have a material adverse effect on our business.

The
academic institutions also generally have the right to terminate our license in the event that we fail to make required payments or otherwise breach the applicable agreements.

Although
no material licenses are due to expire in the near future, the expiration of patents licensed from third parties or the termination of those licenses could have a material
adverse effect on our business.

Some
of our patents may cover inventions that were conceived or first reduced to practice under, or in connection with, U.S. government contracts or other federal funding agreements.
With respect to inventions conceived or first reduced to practice under such federal funding agreements, the U.S. government may retain a nonexclusive, non-transferable, irrevocable,
paid-up license to practice or have practiced for or on behalf of the United States the invention throughout the world. In addition, if we fail to comply with our reporting obligations or
to adequately exploit the developed intellectual property under these federal funding agreements, the U.S. government may obtain additional rights to the developed intellectual property, including the
right to take title to any patents filed by us or to permit others to commercially exploit the intellectual property itself. Furthermore, our ability to exclusively license or assign the intellectual
property developed under these federal funding agreements to third parties may be limited or subject to the U.S. government's approval or oversight. These limitations could have a significant impact
on the commercial value of the developed intellectual property.

Third parties may claim that we infringe their intellectual property, and we could suffer significant litigation or licensing expense as a result.

Various U.S. and foreign issued patents and pending patent applications, which are owned by third parties, exist in areas relevant to biobased plastics, chemicals
and energy, their compositions, formulations and uses, and processes for their production. Such third parties may claim that we infringe their patents. For example, we are aware of competitors with
patents relating to biobased plastics. Such competitors may allege that we infringe these patents. There could also be existing patents of which we are not aware that our technologies may
inadvertently infringe. In addition, because patent applications are maintained in secrecy for a period of time after they are filed, there may be currently pending applications, unknown to us, which
may later result in issued patents that our technologies may infringe. If third parties assert claims against us alleging that we infringe their patents or other intellectual property rights, we could
incur substantial costs and diversion of management resources in defending these claims, and the defense of these claims could have a material adverse effect on our business. In addition, if third
parties assert claims against us and we are unsuccessful in defending against these claims, these third parties may be awarded substantial damages, as well as injunctive or other equitable relief
against us, which could effectively block our ability to make, use, sell, distribute, or market our products and services in the United States or abroad. We cannot currently predict whether a third
party will assert a claim against us, or pursue infringement litigation against us; nor can we predict the ultimate outcome of any such potential claims or litigation.

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In
the event that a claim relating to intellectual property is asserted against us, or third parties not affiliated with us hold pending or issued patents that relate to our products or
technology, we may seek licenses to such intellectual property or challenge those patents. However, we may be unable to obtain these licenses on acceptable terms, if at all, and our challenge of the
patents may be unsuccessful. Our failure to obtain the necessary licenses or other rights could prevent the sale, manufacture, or distribution of some of our products and, therefore, could have a
material adverse effect on our business.

If we are unable to manage our growth effectively, our business could be adversely affected.

While historically we have focused the majority of our efforts on research and development of processes to produce Mirel, we plan to grow by allocating additional
resources to developing marketing and sales expertise, entering into additional collaborations with strategic partners, adding personnel with specific technological experience, and developing and
commercializing additional products, such as biobased plastics in plant crops and biological production of other chemicals and chemical
intermediates from renewable resources. Our ability to grow in this manner will require that we manage a diverse range of relationships and projects, expand our personnel resources and facilities, and
broaden our geographic presence. Our inability to do any of these could prevent us from successfully implementing our growth strategy, and our business could be adversely affected.

We
believe that sustained growth at a higher rate will place a strain on our management, as well as on our other human resources. To manage this growth, we must continue to attract and
retain qualified management, professional, scientific, technical and operating personnel. If we are unable to grow at the required rate, we may be unable to staff and manage projects adequately. This
may slow the development process, and result in the commercialization of fewer products or compromise the quality of our work.

We may not be successful in identifying market needs for new technologies and developing new products to meet those needs.

The success of our business model depends on our ability to correctly identify market opportunities for biologically produced plastics, chemicals and energy. We
intend to identify new market needs, but we may not always have success in doing so, in part because customers may perceive risks in adopting new materials, like Mirel, for use with existing products
and because the markets for new materials and other products are not well-developed.

The
materials and manufacturing technologies we research and develop are new and are steadily changing and advancing. The products that are derived from these technologies may not be
applicable or compatible with the demands in existing markets. Our existing products and technologies may become uncompetitive or obsolete if our competitors adapt more quickly than we do to new
technologies and changes in customers' requirements. Furthermore, we may not be able to identify new opportunities as they arise for our products since future applications of any given product may not
be readily determinable, and we cannot reasonably estimate the size of any markets that may develop. If we are not able to successfully develop new products, we may be unable to increase our product
revenues.

Our products are made using genetically-engineered systems and may be, or may be perceived as being, harmful to human health or the environment.

Mirel is a new material produced from genetically-engineered microbes and genetically engineered corn used as a feedstock. In the future our products may be
produced in genetically-engineered crops. Some countries have adopted regulations prohibiting or limiting the production of genetically-

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engineered
crops and the sale of products made using genetically engineered organisms. Such regulations could harm our business and impair our ability to produce biobased plastics in that manner.

The
subject of genetic engineering of crops and other species has received negative publicity and has aroused public debate. Government authorities could, for social or other purposes,
prohibit or regulate the development and use of genetically-engineered organisms or products made from such organisms. Social concerns could adversely affect acceptance of our products.

The
manufacture, use, sale and marketing of Mirel is subject to government regulations in the U.S and other countries, including requirements for government approval of food contact
applications. The failure to comply with governmental regulations or to obtain government approval for our products could have a material adverse effect on our results of operations and financial
condition. Governmental regulation or negative publicity could delay, reduce or eliminate market demand for our products which could have a material adverse effect on our results of operations and
financial condition.

We face and will face substantial competition in several different markets that may adversely affect our results of operations.

The plastics, chemicals and energy that we have developed or plan to develop will compete with other technologically innovative products as well as conventional
petroleum-based plastics, chemicals and energy. We face and will face substantial competition from a variety of companies in the biodegradable, renewable resource-based plastic segment, within which
there are three distinct technologies: PHA, PLA and starch-based biodegradables. While some of our competitors' existing products that are produced from renewable feedstocks do not have the range of
properties that Mirel offers, such products are, nonetheless, suitable for use in a range of products at a price which may be lower than our premium priced product offerings. Our competitors include,
but are not limited to, Kaneka in the PHA plastic segment, NatureWorks, Mitsui Chemical, Toyota, Novamont, and Stanelco in PLA and starch-based biodegradables, as well as all of the producers of
petroleum-based plastics.

Many
of our competitors have longer operating histories, greater name recognition, larger customer bases and significantly greater financial, sales and marketing, manufacturing,
distribution, technical and other resources than we do. These competitors may be able to adapt more quickly to new or emerging technologies and changes in customer requirements. In addition, current
and potential competitors have established or may establish financial or strategic relationships among themselves or with existing or potential customers or other third parties. Accordingly, new
competitors or alliances among competitors could emerge and rapidly acquire significant market share. We cannot assure you that we will be able to compete successfully against current or new
competitors.

We are subject to significant foreign and domestic government regulations, including environmental and health and safety regulations, and compliance or failure to comply with
these regulations could harm our business.

Our current and planned activities involve the use of a broad range of materials that are, or may be, considered hazardous under applicable laws and regulations.
Accordingly, we and ADM are subject to a number of foreign, federal, state, and local laws and regulations relating to protection of the environment, the storage, use, disposal of, and exposure to,
hazardous materials and wastes, and health and safety, including Food and Drug Administration regulations related to food contact materials. Compliance with these laws and regulations could be costly
and could delay or even preclude commercialization of our products for certain applications. There can be no assurance that we will be able to obtain the regulatory approvals necessary to
commercialize Mirel for any or all food contact applications in a timely manner or at an acceptable cost.

If
we were to violate or become liable under environmental, health and safety laws, we could incur costs, fines and civil and criminal penalties, personal injury and third party property
damage claims, or

32

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could
be required to incur substantial investigation or remediation costs. Moreover, a failure to comply with environmental laws could result in fines and the revocation of environmental permits,
which could prevent us, or our strategic partners, from conducting business. Liability under environmental laws can be joint and several and without regard to fault. There can be no assurance that
violations of environmental health and safety laws will not occur in the future as a result of the inability to obtain permits, human error, equipment failure or other causes. Environmental laws could
become more stringent over time, imposing greater compliance costs and increasing risks and penalties associated with violations, which could harm our business. Accordingly, violations of present and
future environmental laws could restrict our ability to expand facilities, pursue certain technologies, and could require us to acquire costly equipment, or to incur potentially significant costs to
comply with environmental regulations.

Compliance
with foreign, federal, state and local environmental laws and regulations represents a small part of our present budget. If we fail to comply with any such laws or
regulations, however, a government entity may levy a fine on us or require us to take costly measures to ensure compliance.
Any such fine or expenditure may adversely affect our business activities, financial condition, or results of operations. We cannot predict the extent to which future legislation and regulation could
cause us to incur additional operating expenses, capital expenditures, or restrictions and delays in the development of our products and properties.

Our manufacturing operations are currently conducted at a single location, which makes us susceptible to disasters.

Our pre-commercial manufacturing recovery operations are currently conducted at a single location in Fort Mill, South Carolina. As part of our joint
venture with ADM, ADM is constructing the Commercial Manufacturing Facility at a single location in Clinton, Iowa, where we will initially conduct all of our commercial manufacturing operations. Our
headquarters and research and development operations are located at a single facility in Cambridge, Massachusetts, and our product development activities are located at a single facility in Lowell,
Massachusetts. We take precautions to safeguard our facilities, including insurance, health and safety protocols, and off-site storage of critical research results and of computer data.
However, a natural disaster, such as a fire, flood or earthquake, could cause substantial delays in our operations, damage or destroy our manufacturing equipment, inventory or development projects,
and cause us to incur additional expenses. The insurance we maintain against fires, floods, earthquakes and other natural disasters may not be adequate to cover our losses in any particular case.

We may not have adequate insurance and may have substantial exposure to payment of product liability claims.

The testing, manufacture, marketing, and sale of our products and products sold by our licensees may involve product liability risks. Although we currently have
product liability insurance covering claims up to $4 million per occurrence and in the aggregate, we may not be able to maintain this product liability insurance at an acceptable cost, if at
all. In addition, this insurance may not provide adequate coverage against potential losses. If claims or losses exceed our liability insurance coverage, we may go out of business.

Our government grants may subject us to government audits, which could materially harm our business and results of operations.

We may be subject to audits by the U.S. federal government as part of routine audits of our activities funded by our government grants. As part of an audit, these
agencies may review our performance, cost structures and compliance with applicable laws, regulations and standards. If any of our costs are found to be allocated improperly, the costs may not be
reimbursed and any costs already

33

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reimbursed
for such contract may have to be refunded. Accordingly, an audit could result in a material adjustment to our revenue and results of operations. Moreover, if an audit uncovers improper or
illegal activities, we may be subject to civil and criminal penalties and administrative sanctions.

We face risks associated with our international business.

We expect to establish, and to expand over time, international commercial operations and activities. Such international business operations are subject to a
variety of risks associated with conducting business internationally, including:



We
do not know the impact that these regulatory, geopolitical, and other factors may have on our international business in the future.

If we are unable to maintain appropriate internal controls we will not be able to comply with applicable regulatory requirements imposed on reporting companies.

We have recently completed a formal evaluation, documentation and analysis of our internal controls. During the course of our evaluation, documentation and
testing of our internal controls, we did not identify any material weaknesses in internal control. However, in the future, we and our independent registered public accountants will continue to
evaluate our internal controls and may identify deficiencies, significant deficiencies or material weaknesses. Remedying any deficiencies, significant deficiencies or material weaknesses that we or
our independent registered public accounting firm may identify may require us to incur significant costs and expend significant time and management resources. While we believe that we have
successfully implemented internal controls, we cannot assure you that any of the measures we implement to remedy any such deficiencies will effectively mitigate or remedy such deficiencies or
weaknesses. Investors could lose confidence in our financial reports, and our stock price may be adversely affected, if our internal control over financial reporting is found not to be effective by
management or by an independent registered public accounting firm or if we make disclosure of existing or potential significant deficiencies or material weaknesses in those controls.

34

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Our business operations are relatively small and, as a result, we have operated with very limited staffing of key accounting and administrative functions. Such limited staffing made it
difficult for us to segregate certain accounting functions. As our business matures from solely research and development into commercial operations, we have added some, and we will need additional,
accounting and finance staffing to support our expanding business operations and to comply with the additional reporting and regulatory requirements of being a public company. We plan on hiring
additional personnel in our accounting and finance function in order to have sufficient staffing levels. Our development, implementation and maintenance of appropriate internal controls will depend
materially on our successful hiring and retention of key senior accounting personnel with appropriate technical accounting expertise.

Risks Relating to Owning Our Common Stock

An active trading market for our common stock may not be available on a consistent basis to provide stockholders with adequate liquidity. Our stock price may be extremely
volatile, and our stockholders could lose a significant part of their investment.

Prior
to November 10, 2006, there was no public market for our common stock. An active trading market for shares of our common stock may not be sustained on a consistent basis.
The public trading price for our common stock will be affected by a number of factors, including:



As
a result of these factors, our stockholders may not be able to resell their shares at, or above, their purchase price. In addition, the stock prices of many technology companies have
experienced wide fluctuations that have often been unrelated to the operating performance of those companies. The valuations of many biotechnology companies without consistent product revenues and
earnings are extraordinarily high based on conventional valuation standards, such as price to earnings and price to sales ratios. These trading prices and valuations may not be sustained. Any negative
change in the

35

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public's
perception of the prospects of biotechnology companies could depress our stock price regardless of our results of operations. These factors may materially and adversely affect the market
price of our common stock.

Our financial results may vary significantly from period to period which may reduce our stock price.

Our financial results may fluctuate as a result of a number of factors, many of which are outside of our control, which may cause the market price of our common
stock to fall. For these reasons, comparing our operating results on a period-to-period basis may not be meaningful, and you should not rely on our past results as an
indication of our future performance. Our financial results may be negatively affected by any of the risk factors listed in this "Risk Factors" section and, in particular, the following risks:



Provisions in our certificate of incorporation and by-laws and Delaware law might discourage, delay or prevent a change of control of our company or changes in our
management and, therefore, depress the trading price of our common stock.

Provisions of our certificate of incorporation and by-laws and Delaware law may discourage, delay or prevent a merger, acquisition or other change in
control that stockholders may consider favorable, including transactions in which our stockholders might otherwise receive a premium for their shares of our common stock. These provisions may also
prevent or frustrate attempts by our stockholders to replace or remove our management. These provisions include:



The
affirmative vote of the holders of at least 75% of our shares of capital stock entitled to vote is necessary to amend or repeal the above provisions of our certificate of
incorporation. In addition, absent approval of our board of directors, our by-laws may only be amended or repealed by the affirmative vote of the holders of at least 75% of our shares of
capital stock entitled to vote.

36

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In
addition, Section 203 of the Delaware General Corporation Law prohibits a publicly-held Delaware corporation from engaging in a business combination with an
interested stockholder, generally a person which together with its affiliates owns, or within the last three years has owned, 15% of our voting stock, for a period of three years after the date of the
transaction in which the person became an interested stockholder, unless the business combination is approved in a prescribed manner.

The
existence of the foregoing provisions and anti-takeover measures could limit the price that investors might be willing to pay in the future for shares of our common
stock. They could
also deter potential acquirers of our company, thereby reducing the likelihood that our stockholders could receive a premium for their common stock in an acquisition.

We do not currently intend to pay dividends on our common stock and, consequently, our stockholders' ability to achieve a return on their investment will depend on appreciation
in the price of our common stock.

We have never declared or paid any cash dividends on our common stock and do not currently intend to do so for the foreseeable future. We currently intend to
invest our future earnings, if any, to fund our growth. Therefore, our stockholders are not likely to receive any dividends on their common stock for the foreseeable future.

ITEM 1B.    UNRESOLVED STAFF COMMENTS

Not
applicable

ITEM 2.    PROPERTIES

We do not own any real property. We currently lease approximately 28,000 square feet of office and research and development space at 21 Erie Street, Cambridge,
Massachusetts. Our lease for this facility expires in 2014, with an option to renew for two additional five year periods. We also lease approximately 13,700 square feet of office and laboratory space
in Lowell, Massachusetts, which serves as the headquarters of Telles, our joint venture with ADM. Our lease for this facility expires in 2012. We are presently considering alternatives to expand our
office and product development facilities, which may include leasing additional space in the greater Boston area.

We
have entered into an agreement with Nation Ford Chemical, or NFC, to act as a contract manufacturer and to operate a recovery facility for pre-commercial manufacturing in
Fort Mill, South Carolina. We deliver raw materials to NFC for manufacturing and processing of Mirel, which is stored and then shipped at our instruction. The agreement extends until
December 31, 2008, and thereafter until terminated by either party upon not less than three (3) months prior written notice. This plant is a model for the larger extraction assets to be
employed at the Commercial Manufacturing Facility and the current processes, technology and systems will be replicated at a larger scale at the Commercial Manufacturing Facility.

ITEM 3.    LEGAL PROCEEDINGS

From time to time, we may be subject to legal proceedings and claims in the ordinary course of business. We are not currently aware of any such proceedings or
claims that we believe will have, individually or in the aggregate, a material adverse effect on the business, financial condition or the results of operations.

Procter &
Gamble Company ("P&G") filed a nullity action on March 8, 2005 in Germany seeking to revoke the German equivalent of one of the Company's European patents. The
patent in question is licensed by the Massachusetts Institute of Technology ("MIT") exclusively to the Company. On July 14, 2007, the German Federal Patents Court dismissed the suit in its
entirety. The court decided in favor of

37

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the
Company in its defense of the patent, with the plaintiff bearing all costs of the proceeding. The patent upheld in the suit is the German counterpart of the European patent EP
0 482 077, which covers a method of producing some types of biopolymers. The enforcement of the action, including the reimbursement of costs, was stayed pending the outcome
of a potential appeal by of P&G. No appeal has been made, and the time for appeals has expired.

ITEM 4.    SUBMISSION FOR MATTERS TO A VOTE OF SECURITY HOLDERS

None

PART II

ITEM 5.    MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information

Our common stock has been traded on the NASDAQ Global Market under the symbol "MBLX" since November 10, 2006. Prior to that time, there was no established
public trading market for our common stock. The following table sets forth, for the period indicated, the high and low sales prices for the common stock, as reported by the NASDAQ Global Market, for
the periods indicated below:

|               |  | Common Stock Price
|-------------- |  | ------------------
|
|
|First Quarter  |  | $                 
|Second Quarter |  |                   
|Third Quarter  |  |                   
|Fourth Quarter |  |                   

---

The
close price of our common stock, as reported by the NASDAQ Global Market, was $16.10 on February 29, 2008.

Stockholders

As of February 29, 2008, there were 22,626,664 shares of our common stock outstanding held by 150 stockholders of record.

Dividends

We have never declared or paid any cash dividends on our capital stock and do not expect to pay any cash dividends for the foreseeable future. We intend to use
future earnings, if any, in the operation and expansion of our business. Any future determination relating to our dividend policy will be made at the discretion of our board of directors, based on our
financial condition, results of operations, contractual restrictions, capital requirements, business properties, restrictions imposed by applicable law and other factors our board of directors may
deem relevant.

Equity Compensation Plan Information

Please see Part III, Item 12, for information regarding securities authorized for issuance under our equity compensation plans.

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Unregistered Sales of Securities

None.

Use of Proceeds from Registered Securities

On November 15, 2006, we issued and sold all of the 6,800,000 shares of our common stock that we registered under a Registration Statement on
Form S-1 (File No. 333-135760), which was declared effective by the SEC on November 9, 2006, in an initial public offering at an offering price of $14.00
per share. On November 16, 2006, the underwriters exercised the option to purchase an additional 1,020,000 shares of common stock from us at the offering price of $14.00 per share less
underwriting discounts and commissions. Concurrent with this offering, Archer Daniels Midland Company ("ADM") purchased 535,714 shares at an initial offering price of $14.00 per share. The offering of
the common stock, including the exercise by the underwriters of their over-allotment option and the sale of the ADM shares, resulted in gross proceeds of $117 million and net
proceeds of approximately $107 million to us after deducting underwriting discounts and commissions of approximately $7.6 million and related offering costs of an estimated
$2.5 million. The book running manager for the offering was Piper Jaffray & Co., and Jeffries & Company, Thomas Weisel Partners LLC and Ardour Capital
Investments, LLC acted as representatives of the underwriters. No payments were made to directors, officers or persons owning ten percent of more of our common stock or to their associates, or
to our affiliates, other than payments in the ordinary course of business to officers for salaries and to non-employee directors as compensation for board or board committee service.

We
have used a portion of, and intend to continue to use, the proceeds of our initial public offering for general corporate purposes, which includes research and development, capital
expenditures and other sales and marketing expenses. The unused net proceeds from our initial public offering are invested in
investment grade, short term, interest bearing securities. This use of proceeds is not materially different from the use of proceeds described in the final prospectuses for our initial public
offering.

The
amount and timing of our actual expenditures may vary significantly depending on numerous factors, such as the progress of our product development and commercialization efforts and
the amount of cash used to fund our operations.

Issuer Purchases of Equity Securities

During the quarter ended December 31, 2007, there were no repurchases made by us or on our behalf, or by any "affiliated purchasers", of shares of our
common stock.

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ITEM 6.    SELECTED CONSOLIDATED FINANCIAL DATA

The selected condensed consolidated statement of operations data for the years ended December 31, 2007, 2006, and 2005 and balance sheet data as of
December 31, 2007 and 2006 have been derived from our consolidated financial statements and related notes, which are included elsewhere in this report, and have been audited by
PricewaterhouseCoopers LLP, an independent registered public accounting firm, as indicated in their report. The selected condensed consolidated statement of operations data for the years ended
December 31, 2004 and 2003 and the balance sheet data as of December 31, 2005, 2004 and 2003 have been derived from our audited financial statements that are not included in this report.
The selected financial data set forth below should be read in conjunction with our financial statements, the related notes and "Management's Discussion and Analysis of Financial Condition and Results
of Operations" included elsewhere in this report. The historical results are not necessarily indicative of the results to be expected for any future period.

|                                                                  |  | Year ended December 31, |           
|----------------------------------------------------------------- |  | ----------------------- | ----------
|
|
|Statement of operations data:                                     |  |                         |           
|Total Revenue                                                     |  | $                       | 1,683     
|Operating expenses                                                |  |                         |           
|Research and development expenses, including costs of revenue     |  |                         | 19,901    
|General and administrative expenses                               |  |                         | 15,598    
|                                                                  |  |                         |           
|Total Operating expenses                                          |  |                         | 35,499    
|                                                                  |  |                         |           
|Loss from operations                                              |  |                         | (33,816   
|Interest income and (expense) net                                 |  |                         | 5,941     
|Loss on investment in related parties                             |  |                         |          
|                                                                  |  |                         |           
|Net loss(2)                                                       |  | $                       | (27,875   
|                                                                  |  |                         |           
|Net loss per share Basic and Diluted                              |  | $                       | (1.27     
|Number of shares used in per share calculations Basic and Diluted |  |                         | 21,997,397

---

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|                                             |  | As of December 31, |        
|-------------------------------------------- |  | ------------------ | -------
|
|
|Balance Sheet Information:                   |  |                    |        
|Cash and short-term investments              |  | $                  | 109,326
|Total Assets                                 |  |                    | 119,004
|Long-term obligations                        |  |                    | 963    
|Long-term deferred revenue                   |  |                    | 24,180 
|Total Liabilities                            |  |                    | 29,802 
|Redeemable stock convertible preferred stock |  |                    |       
|Accumulated deficit                          |  |                    | (94,112
|Total stockholders' equity (deficit)         |  |                    | 89,202 

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ITEM 7.    MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis should be read in conjunction with the Consolidated Financial Statements and Notes thereto included
in this Annual Report on Form 10-K.

All dollar amounts are stated in thousands.

Overview

We are a bioscience company that develops and plans to commercialize environmentally sustainable, economically attractive alternatives to petroleum-based
plastics, chemicals and energy. Our strategy is to develop technology platforms that integrate advanced biotechnology with current industrial practice and to commercialize these platforms with
industry leading strategic partners.

Our
first platform, which we are commercializing through Telles, a joint venture with Archer Daniels Midland Company, or ADM, is a proprietary, large-scale microbial fermentation system
for producing a versatile family of polymers known as polyhydroxyalkanoates, which we have branded under the name Mirel. Through Telles, we intend to sell these bioplastics as
environmentally friendly, but functionally equivalent, alternatives to petroleum-based plastics in a wide range of commercial applications, including packaging, consumer goods, consumer electronics,
products used in agriculture and horticulture, and marine and water applications. Mirel will be produced in a 110 million pound annual capacity commercial scale plant, or Commercial
Manufacturing Facility, which is presently under construction by ADM in Clinton, Iowa. The timing of product availability from the Commercial Manufacturing Facility has been projected to be December
2008. However, much of the current construction work at Clinton has been impacted by this year's harsh Midwest winter, and ADM is in the process of re-evaluating construction timing for the Clinton
project. The Commercial Manufacturing Facility will produce biobased, sustainable and biodegradable Mirel plastic out of corn sugar, an abundant agriculturally-produced renewable resource. We are
currently producing
pre-commercial quantities of Mirel jointly with ADM at a small scale pre-commercial manufacturing facility.

Our
second technology platform, which is in an early stage, is a biomass biorefinery system using plant crops to co-produce both bioplastics and bioenergy. For this system,
we intend to extract polymer from the engineered plant crop, so that the remaining plant material can be used as a biomass feedstock for the production of bioenergy products including electricity and
biofuel. We are engineering switchgrass to produce bioplastics in the leaf and stem of the plant. We also have a collaboration with the Australian Cooperative Research Centre to do the same in
sugarcane, and we have recently established a strategic research collaboration with the Donald Danforth Plant Science Center to develop an advanced industrial oilseed crop for
co-production of bioplastics along with vegetable oil, biodiesel fuel, or oleochemicals. Switchgrass is a commercially and ecologically attractive, non-food energy crop that is
indigenous to North America and is generally considered to be a leading candidate for cellulose-derived production of ethanol and other biofuels. Sugarcane is an established energy crop that is well
suited for tropical regions of the world. We believe that using these crops to co-produce bioplastics with bioenergy products can offer superior economic value and productivity as compared
to single product systems that produce them individually. We have been working on our biomass biorefinery platform using switchgrass for several years, and we believe that we are a scientific leader
in this field. Our goals for this program are to have commercially viable plant varieties in pre-commercial field trials in three to four years. We may also seek to establish alliances
with partners to commercially exploit this platform.

As
demonstrated by our first two technology platforms, we take an integrated systems approach to our technology development. We are focused on developing entire production systems from
gene to end product as opposed to developing specific technologies (for example, gene sequencing, shuffling or directed evolution) or singular aspects of a product's production (for example, providing
a key enzyme,

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catalyst
or ingredient). We believe this systems approach optimizes manufacturing productivity and, when commercialized, will enable us to capture more economic value from any platform that we pursue.
We have core capabilities in microbial genetics, fermentation process engineering, chemical engineering, polymer science, plant genetics and botanical science. We have assembled these capabilities in
a way that has allowed us to integrate biotechnology with chemical engineering and industrial practice. We believe that our approach can be applied to chemicals and other products to help establish
and grow environmentally sustainable plastics, chemicals and energy industries.

We
intend to apply our core capabilities in microbial engineering and plant transformation to develop biological routes to other chemicals and chemical intermediates. In September 2007
the U.S. Department of Commerce's National Institute of Standards and Technology approved a $2 million award for us to develop a commercially viable process for producing biobased chemicals
from renewable agricultural products. This award will fund our integrated bio-engineered chemicals program, which is beginning development of sustainable solutions for widely used
four-carbon industrial chemicals.

To
exploit our first technology platform, we are working with ADM to build the Commercial Manufacturing Facility in Clinton, Iowa. The bioplastics that this facility will produce are
highly versatile and range in properties from hard and strong to soft and flexible. These properties allow for a wide variety of commercial applications, offering an environmentally-friendly
alternative to petroleum-derived synthetic materials which are not biodegradable. Through Telles we intend to initially position Mirel as a premium priced specialty material catering to customers who
want to match the functionality of petroleum-based plastic, but add the dimension of environmental responsibility to their products and brands.

With
ADM we have initiated product and business development activities including production of pre-commercial amounts of Mirel, working with potential customers, and
initiation of qualification trials of our material for selected customer applications. We expect that our products will initially be sold to companies that are:



We
have a current pipeline of prospective customers that reflect each of these traits.

Since
our inception in 1992, we have focused on the research of our platform technologies, the acquisition of patents to enhance these platforms, product development, and
pre-commercial manufacturing of Mirel. Commercialization of Mirel will require significant additional expenditures in several areas, including research and development,
pre-commercial manufacturing, product development, and sales and marketing organization development. We expect these expenditures to increase in future years.

We
have generated revenues primarily from government grants, research and development payments, license fees, and royalty payments. We have funded our operations primarily through the
sale of equity securities, government grants, and payments from our collaborative partners.

We
have incurred significant losses since our inception. As of December 31, 2007, our accumulated deficit from inception to date was $94,112 and total stockholders' equity was
$89,202. We recognized net losses of $27,875, $16,062, and $7,625 in 2007, 2006, and 2005, respectively. We expect our net losses to increase in the next two years as we continue our
pre-commercial manufacturing development and expand our research and development and sales and marketing activities.

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Collaborative Arrangements

Our strategy for collaborative arrangements is to retain substantial participation in the future economic value of our technology while receiving current cash
payments to offset research and development costs and working capital needs. By their nature, these agreements are complex and have multiple elements that cover a variety of present and future
activities. In addition, certain elements of these agreements are intrinsically difficult to separate and treat as separate units for accounting purposes. Consequently, we expect to defer recognizing
most, if not all, of the payments we receive from partners as revenue until future years.

In
2004, we entered into the Technology Alliance and Option Agreement with ADM Polymer Corporation, or ADM Polymer, a subsidiary of ADM. The goal of the Technology Alliance and Option
Agreement was to demonstrate the capabilities of our fermentation and recovery technologies at commercial scale and to prepare a master plan and budget for the construction of a commercial facility
with a 110 million pound annual capacity. Upon achievement of such goals, ADM Polymer had the option to enter into a commercial alliance, by execution of the Commercial Alliance Agreement, for
further research, development, manufacture, use, and sale of Mirel. In July 2006, ADM Polymer exercised its option under our Technology Alliance and Option Agreement and entered into a Commercial
Alliance Agreement with us. Upon entering into the Commercial Alliance Agreement, the Technology Alliance and Option Agreement terminated pursuant to its terms. The Commercial Alliance Agreement calls
for up to 12 quarterly payments of $1,575, to us from ADM during the construction period of the Commercial Manufacturing Facility, along with reimbursements for pre-commercial
manufacturing facility expansion and material production expenses. As of December 31, 2007, all payments received from ADM have been recorded as deferred revenue on our balance sheet. We expect
to begin recognizing revenue at the time of the First Commercial Sale of Mirel (as defined in the Commercial Alliance Agreement) and all amounts will be recognized proportionally over the period in
which our commercial obligations are fulfilled in accordance with the terms of the Commercial Alliance Agreement.

We
formed a joint development agreement with BP in 2005. Deferred revenue of $2,500 associated with the BP arrangement was recognized in full during the first quarter of 2006 when the
alliance was terminated.

We
received the following payments from these arrangements to offset operating cash needs:



During
the Commercial Alliance Phase, ADM will construct, finance, own and operate the Commercial Manufacturing Facility through a manufacturing agreement with Telles and we will provide
or procure compounding services to convert the output from the Commercial Manufacturing Facility into forms that are suitable for various commercial applications.

Telles
is a limited liability company, formed and equally owned by us and ADM, and is intended to: (i) serve as the commercial entity to establish and develop the commercial
market for Mirel, and conduct the marketing and sales in accordance with the goals of the commercial alliance, (ii) assist in the coordination and integration of the manufacturing, compounding
and marketing activities, and (iii) administer and account for financial matters on behalf of the parties. The Company and ADM each have 50% equity and voting interest in Telles.

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Even
though Telles is a separate legal entity owned equally by us and ADM Polymer, ADM Polymer will disproportionately fund the activities of the joint venture. Specifically, the cost of
the Commercial Manufacturing Facility, the working capital requirements of the joint venture and the support payments to us will exceed the investments made by us to establish compounding operations
for the joint venture. In order to rebalance the respective investments made by the parties, a preferential distribution of cash flow will be used, whereby all profits, after payment of all royalties,
reimbursements and fees, from the joint venture, will be distributed to ADM until ADM's disproportionate investment in the joint venture, and the costs of constructing the Commercial Manufacturing
Facility, have been returned to ADM. Once ADM has recouped such amounts, the profits of the joint venture will be distributed in equal amounts to the parties. In order to track the disproportionate
investments ADM has made, a Ledger Account has been established to record the respective investments made by the parties. As of December 31, 2007 the balance of the ADM Ledger Account was
$97,269 and this balance is expected to increase as the construction of the Commercial Manufacturing Facility progresses and Telles becomes operational.

United States Government Contracts and Grants

As of December 31, 2007, expected gross proceeds of $2,692 remain to be received under our various government contracts and grants, which include amounts
for reimbursement to our subcontractors, as well as reimbursement for our employees' time and benefits and other expenses related to performance under the various contracts.

The
status of our United States government contracts and grants is as follows:

|Program Title                                |       | Funding
Agency            |  | Total
government
funds |       | Total received
through
December 31, 2007 |   | Remaining amount
available under
various government
contracts as of
December 31, 2007 |     | Contract/Grant
Expiration
|-------------------------------------------- | ----- | ------------------------- |  | ---------------------- | ----- | ---------------------------------------- | - | ------------------------------------------------------------------------------------- | --- | -------------------------
|PHA Bioplastic Packaging Materials           |       | SERDP(1)(2)               |  | $                      | 1,005 |                                          | $ | 381                                                                                   |     | $                        
|Blow Molded Bioproducts from Natural Plastic |       | Department of Agriculture |  | $                      | 80    |                                          | $ | 12                                                                                    |     | $                        
|Integrated Bio-Engineered Chemicals          |       | Department of Commerce    |  | $                      | 2,000 |                                          | $ |                                                                                      |     | $                        
|                                             |       |                           |  |                        |       |                                          |   |                                                                                       |     |                          
|                                             | Total |                           |  |                        | $     | 3,085                                    |   | $                                                                                     | 393 |                          
|                                             |       |                           |  |                        |       |                                          |   |                                                                                       |     |                          

---

Critical Accounting Estimates and Judgments

Our consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America. The preparation of
these consolidated financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, costs and expenses, and related disclosures. We
evaluate our estimates and assumptions on an ongoing basis. Our actual results may differ from these estimates.

45

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We believe that of our significant accounting policies, which are described in Note 3 to our consolidated financial statements, the following accounting policies involve a greater
degree of judgment and complexity. Accordingly, we believe that the following accounting policies are the most critical to aid in fully understanding and evaluating our consolidated financial
condition and results of operations.

Revenue Recognition

We recognize revenue under government research grants when the related expense is incurred and we have obtained governmental approval to use the grant funds for
agreed upon budgeted expenses.

For
revenue received under our arrangements with ADM and BP, we recognize revenue in accordance with the Staff Accounting Bulletin ("SAB") 104,Revenue
Recognition, and Emerging Issues Task Force ("EITF") Issue No. 00-21,Revenue Arrangements with Multiple
Deliverables.

Our
arrangement with ADM contains multiple elements including obligations for us to provide future compounding services, sales and marketing services, and certain research and
development activities, amongst others. We have determined that these elements cannot be separated and accounted for individually as separate units of accounting. Therefore payments received from ADM
have been classified as deferred revenue at the respective balance sheet dates and will begin to be recognized at the time of the first commercial sale of Mirel. All amounts will be recognized
proportionally over the period in which our commercial obligations are fulfilled in accordance with the term of the Commercial Alliance Agreement.

Under
our joint development arrangement with BP, we received $2,000 in 2005 and $500 in 2006. Due to these amounts being applicable to future elements of the arrangement, the amounts
received during 2005 were recorded as deferred revenue at December 31, 2005. We recognized the revenue for these amounts during the first quarter of 2006 upon the termination notice from BP in
January 2006, as we were released from any future obligations under this agreement.

Fees
to license the use of the Company's proprietary and licensed technologies are recognized only after both the license period has commenced and the technology has been delivered to
the customer.
Royalty revenue is recognized when it becomes determinable and collectibility is reasonably assured, otherwise the Company recognizes revenue upon receipt of payment.

Stock-Based Compensation

Effective January 1, 2006, we adoptedStatement of Financial Accounting Standards ("SFAS") No. 123-revised,
Share-Based Payment("SFAS 123(R)"), which revises SFAS No. 123,Accounting for Stock-Based Compensation("SFAS 123") and supersedes Accounting Principles Board ("APB") Opinion No. 25,Accounting for Stock Issued to Employees("APB 25"). SFAS 123(R) requires that all employee-related stock-based compensation be recognized as an expense in the consolidated financial statements and that such expense be measured
at the fair value of the award.

We
adopted SFAS 123(R) using the prospective method of application due to our prior use of the minimum value method to value options. The prospective method requires us to
recognize compensation expense on a prospective basis; therefore, prior period consolidated financial statements have not been restated. Compensation expense recognized includes the expense of stock
options granted on and subsequent to January 1, 2006. Stock options granted by us prior to that time are specifically excluded from SFAS 123(R) and will continue to be accounted for in
accordance with APB 25.

Determining
the appropriate fair value model and calculating the fair value of stock-based payment awards requires the use of highly subjective assumptions, including the expected life
of the stock-based payment awards and stock price volatility. In 2006, we began using the Black-Scholes

46

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option-pricing
model to value our option grants and determine the related compensation expense. The assumptions used in calculating the fair value of stock-based awards represent management's best
estimates, but the estimates involve inherent uncertainties and the application of management judgment. As a result, if factors change, and we use different assumptions, our stock-based compensation
expense could be materially different in the future. Prior to the adoption of SFAS 123(R), we had adopted SFAS 123, but in accordance with SFAS 123, we had elected not to apply
fair value-based accounting for awards under our stock incentive plan through December 31, 2005. Instead, we measured compensation expense for our stock plans using the intrinsic value method
prescribed by APB 25, and related interpretations and provided pro forma disclosures as permitted under SFAS No. 148,Accounting for Stock-Based
CompensationTransition and Disclosure an amendment of SFAS 123. See Note 13 to the consolidated financial statements for further discussion on the
key assumptions used to determine the fair values of option grants pursuant to the Black-Scholes option pricing model.

We
account for stock compensation arrangements with non-employees in accordance with EITF No. 96-18,Accounting for Equity
Instruments That Are Issued to Other Than
Employees for Acquiring, or in Conjunction with Selling, Goods or Services,using a fair value approach. For stock options granted to non-employees, the fair value
of the stock options is estimated using the Black-Scholes valuation model. Stock-based compensation expense is recognized over the period of expected service by the non-employee. As the
service is performed, we are required to update these assumptions and periodically revalue unvested options and make adjustments to the stock-based compensation expense using the new valuation. These
adjustments may result in additional or lesser stock-based compensation expense than originally estimated or recorded, with a corresponding increase or decrease in compensation expense in the
statement of operations. Ultimately, the final compensation charge for each option grant to non-employees is unknown until those options have vested or services have been completed or the
performance of services is completed.

Results of Operations

Comparison of the Years Ended December 31, 2007 and 2006

Revenue

|                                                     |               | Year ended
December 31, |     |       |  
|---------------------------------------------------- | ------------- | ----------------------- | --- | ----- | -
|
|Research and development revenue                     |               | $                       | 147 |       | $
|License fee revenue                                  |               |                         | 500 |       |  
|License fee and royalty revenue from related parties |               |                         | 157 |       |  
|Grant revenue                                        |               |                         | 879 |       |  
|                                                     |               |                         |     |       |  
|                                                     | Total revenue |                         | $   | 1,683 |  
|                                                     |               |                         |     |       |  

Total
revenues were $1,683 for the year ended December 31, 2007 as compared to $4,590 for the year ended December 31, 2006. The primary reason for the decrease in research
and development revenue in 2007 was the recognition of $2,500 of deferred revenue, in fiscal year 2006, associated with the termination of the Company's joint development arrangement with BP. During
2007 the Company received $500 in license fee revenue from entering a new licensing agreement in the fourth quarter of 2007. The decrease in license fee and royalty revenue from related parties was
due to the receipt of the final license payment due from one of our license agreements with a related party during the first half of 2006. The decrease in grant revenue was attributable to the
completion of a US Department of Agriculture program in the first quarter of 2006 and the completion of the Department of Energy program in the second quarter of 2007.

47

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We
expect revenues from government grants to fluctuate due to the availability of funding from the government, and the revenue from collaborative arrangements will be recognized as
future obligations under the agreements are completed.

Expense

|                                                             |  | Year ended
December 31, |        | 
|------------------------------------------------------------ |  | ----------------------- | ------ | 
|
|Research and development expenses, including cost of revenue |  | $                       | 19,901 | 
|Selling, general, and administrative expenses                |  |                         | 15,598 | 
|                                                             |  |                         |        | 
|Total operating expenses                                     |  | $                       | 35,499 | 
|                                                             |  |                         |        | 

Research and Development Expenses

Research and development expenses were $19,901 and $11,235 for the years ended December 31, 2007 and 2006, respectively. The increase of $8,666 was
primarily due to the expansion of product development activities associated with developing new product grades and formulations for prospective customers, increased pre-commercial
manufacturing of Mirel to support market development activities, and increases in research and development personnel for polymer science and engineering to support our collaborative agreement with
ADM. Employee payroll and benefits related expenses for the year ended December 31, 2007 were $6,451 as compared to $3,831 during the same period in 2006. Stock-based compensation expense
increased to $749 for the year ended December 31, 2007 as compared to $166 during the same period in 2006. The expenses related to pre-commercial manufacturing increased to $6,599
during the year ended December 31, 2007 as compared to $3,522 during the same period in 2006.

We
expect to incur increasing research and development expenses in future periods for pre-commercial manufacturing and product development activities as we continue to
develop, test and refine products to meet the product specification requirements of our customers. We expect that our personnel related costs will also increase to support our microbial and plant
research programs.

Selling General and Administrative Expenses

Selling, general, and administrative expenses were $15,598 and $10,879 for the years ended December 31, 2007 and 2006, respectively. The increase of $4,719
was primarily due to increased costs associated with being a public company and an increase in sales and marketing costs as we build our sales and marketing infrastructure for the commercialization of
Mirel. Employee payroll and benefits related expenses increased to $4,869 during the year ended December 31, 2007 as compared to $3,306 for the same period in 2006. Stock-based compensation
expense increased to $3,810 during the year ended December 31, 2007 as compared to $3,339 for the same period in 2006. Professional fees and consulting related fees increased to $3,835 during
the year ended December 31, 2007 as compared to $2,703 for the same period in 2006. These increases were primarily attributable to accounting services relating to compliance with additional
regulatory requirements of being a public company. Expenses related to facilities increased to $1,038 during the year ended December 31, 2007 as compared to $259 for the same period in 2006.
This increase is primarily the result of the expansion of our facilities to support our sales and marketing functions. We expect that selling, general and administrative expenses will continue to
increase in the future due to increased payroll, expanded infrastructure and increased consulting, legal, accounting and investor relations expenses.

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Other Income (Net)

|                         |  | Year ended
December 31, |       | 
|------------------------ |  | ----------------------- | ----- | 
|
|Total other income (net) |  | $                       | 5,941 | 
|                         |  |                         |       | 

Other
income (net) consists of investment income and was $5,941 and $1,462 for the years ended December 31, 2007 and 2006, respectively. The increase of $4,479 was due to an
increase in the cash and short-term investments held during the full year 2007 as compared with 2006. The increase in cash and short-term investments was primarily a result of
the completion of our initial public offering in November 2006.

We
anticipate that our interest income will be lower in the future as we continue to use our cash and short-term investments for our operating cash needs and capital
purchases.

Results of Operations

Comparison of the Years Ended December 31, 2006 and 2005

Revenue

|                                                     |               | Year ended
December 31, |       |       |  
|---------------------------------------------------- | ------------- | ----------------------- | ----- | ----- | -
|
|Research and development revenue                     |               | $                       | 2,505 |       | $
|License fee and royalty revenue from related parties |               |                         | 257   |       |  
|Grant revenue                                        |               |                         | 1,828 |       |  
|                                                     |               |                         |       |       |  
|                                                     | Total revenue |                         | $     | 4,590 |  
|                                                     |               |                         |       |       |  

Total
revenues were $4,590 for the year ended December 31, 2006 as compared to $2,781 for the year ended December 31, 2005. We recognized revenue from research and
development services of $2,505 and $106 during the years ended December 31, 2006 and 2005, respectively. The primary reason for the increase in revenue during 2006 was the recognition of $2,500
of deferred revenue associated with the termination of the Company's joint development arrangement with BP. We also recognized government grant revenue of $1,828 and $2,433 during the years ended
December 31, 2006 and 2005, respectively. Government grant revenue declined due to the completion of an Advanced Technology Program in 2005 and a United States Department of Agriculture program
in the first quarter of 2006. These decreases were offset in part by new grant programs in 2006 and increased Department of Energy grant activity. Total license and royalty revenue was $257 for the
year ended December 31, 2006 as compared to $242 for the year ended December 31, 2005.

Expense

|                                                             |  | Year ended
December 31, |        | 
|------------------------------------------------------------ |  | ----------------------- | ------ | 
|
|Research and development expenses, including cost of revenue |  | $                       | 11,235 | 
|Selling, general, and administrative expenses                |  |                         | 10,879 | 
|                                                             |  |                         |        | 
|Total operating expenses                                     |  | $                       | 22,114 | 
|                                                             |  |                         |        | 

49

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Research and Development Expenses

Research and development expenses increased to $11,235 in 2006 from $5,980 in 2005. The increase was primarily due to the growth of pre-commercial
manufacturing of Mirel and related product development activities. The expense attributable to pre-commercial manufacturing was $3,522 and $703 in 2006 and 2005 respectively. We also had
higher employee payroll and related expenses, $3,831 in 2006 and $2,593 in 2005, due to an increase in research and development personnel for our microbial fermentation platform, to support our
collaborative arrangement with ADM, and for our switchgrass research program.

Selling, General and Administrative Expenses

Selling, general and administrative expenses for 2006 increased to $10,879 from $3,825 in 2005. The increase was primarily due to the recognition of stock-based
compensation expense, which amounted to $3,339 during 2006. The stock-based compensation expense increase was primarily due to the adoption
of SFAS 123(R) on January 1, 2006. In addition, performance-based options, previously granted to an officer of the company and options to consultants, which were marked to market during
2006, contributed to additional stock-based compensation expense. We had additional employee payroll and related expenses, $3,306 in 2006 and $883 in 2005, and increased professional fees and
consulting related fees, $2,703 in 2006 and $2,299 in 2005, to prepare for the commercialization of Mirel, to support our growing operations, and to provide for the administrative requirements of
being a public company. Expenses were higher due to the following activities: we hired two key officers during 2006 to build and manage our sales and marketing function, we increased our finance and
legal personnel to support the requirements of being a public company, and we appointed additional independent directors to our board. There were also additional expenses incurred in the fourth
quarter of 2006 for directors and officers insurance, directors' fees, professional fees and other expenses related to being a public company.

Other Income (Net)

|                         |  | Year ended
December 31, |       | 
|------------------------ |  | ----------------------- | ----- | 
|
|Total other income (net) |  | $                       | 1,462 | 
|                         |  |                         |       | 

Other
income (net) increased to $1,462 in 2006 from $(601) in 2005 primarily due to higher cash and short-term investment balances during 2006. Cash and
short-term investments were $122,080 and $3,174 at December 31, 2006 and 2005 respectively. The increase in cash and short-term investments was primarily a result of the
completion of the initial public offering in November 2006 and issuance of the Series 05 preferred stock in January 2006. In addition, during 2005 we recorded an asset impairment charge of $700
with respect to our investment in Tepha, Inc., a related party. We did not incur any additional such charges during 2006 as this asset had no remaining net book value. See Note 10 to our
consolidated financial statements included in this report for further discussion.

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Liquidity and Capital Resources

Currently, we require cash to fund our working capital needs, to purchase capital assets and to pay our operating lease obligations.

We
fund our cash requirements primarily through the following methods:



Currently
our products are in the pre-commercial stage of development and large-scale commercial sales have not begun. In addition, we have incurred significant expenses
relating to our research and development efforts. As a result, we have incurred net losses since our inception. As of December 31, 2007, we had an accumulated deficit of $94,112. Our total
unrestricted cash, cash equivalents and short-term investments as of December 31, 2007 were $109,326 as compared to $122,080 at December 31, 2006. As of December 31,
2007, we had no outstanding debt.

Our
cash and cash equivalents at December 31, 2007 were held for working capital purposes. We do not enter into investments for trading or speculative purposes. The primary
objective of our investment activities is to preserve our capital. Restricted cash of $498 was held at December 31, 2007 in connection with the lease agreement for our facility in Cambridge,
Massachusetts. Short-term investments are made in accordance with our corporate investment policy, as approved by our Board of Directors. Investments are limited to high quality corporate
debt, U.S. Treasury bills and notes, bank debt obligations, municipal debt obligations and asset-backed securities. The policy establishes maturity limits, concentration limits, and liquidity
requirements. At December 31, 2007, we were in compliance with this policy.

We
believe that our cash, cash equivalents and short-term securities, the interest we earn on these balances, as well as cash expected from our ADM alliance will be
sufficient to meet our anticipated cash requirements, including cash requirements with respect to the commercial launch of Mirel for at least the next 24 months. If our available cash, cash
equivalents, and short-term marketable securities are insufficient to satisfy our liquidity requirements, or if we develop additional products, we may need to sell additional equity or
debt securities or obtain a credit facility. The sale of additional equity and debt securities may result in additional dilution to our stockholders. If we raise additional funds through the issuance
of debt securities or preferred stock, these securities could have rights senior to those of our common stock and could contain covenants that would restrict our operations. We may require additional
capital beyond our currently forecasted amounts. Any such required additional capital may not be available on reasonable terms, if at all. If we are unable to obtain additional financing, we may be
required to reduce the scope of, delay or eliminate some or all of our planned research, development and commercialization activities, which could harm our business.

Net
cash used in operating activities was $10,900 during the year ended December 31, 2007, compared to net cash used in operating activities of $3,603 and $4,394 in 2006 and 2005,
respectively. The net cash used in 2007 primarily reflects the net loss for 2007 offset by an increase in deferred revenue of $9,869, and includes non-cash stock-based compensation expense
of $4,559, 401(k) company common stock matching expense of $276 and depreciation expense of $1,451. The increase in deferred revenue was due to an increase in pre-commercial plant
construction and operations that are subject to our cost sharing collaborative arrangement with ADM and continued support payments from ADM.

Net
cash of $5,804 was provided by investing activities during the year ended December 31, 2007, compared to net cash used in investing activities of $97,076 and $1,905 in 2006
and 2005, respectively.

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Cash
provided by investing activities in 2007 represents net cash provided from the purchase and maturity of investments and a cash outflow to purchase property and equipment. Purchases of property
and equipment totaled $4,662 during the year ended December 31, 2007, as compared to $1,544 and $1,870 in the years ended December 31, 2006 and 2005, respectively. Property and equipment
additions in 2007 consisted primarily of capital expenditures relating to the construction of our pre-commercial manufacturing facility. Net cash used in investing activities may fluctuate
from period to period due to the timing of our capital expenditures and other investments.

Net
cash of $2,600 was provided by financing activities during the year ended December 31, 2007, compared to $124,026 and $4,982 provided by financing activities during the years
ended December 31, 2006 and 2005, respectively. Proceeds from financing activities in 2007 consisted of proceeds from the exercise of options and warrants. During the year end
December 31, 2006, $106,863 was provided from our initial public offering.

Off-Balance Sheet Arrangement

As of December 31, 2007, we had no off-balance sheet arrangements as defined in Item 303(a) (4) of the Securities and Exchange
Commission's Regulation S-K.

Contractual Obligations

The following table summarizes our contractual obligations at December 31, 2007:

|                            |       | Payments Due by Period
|--------------------------- | ----- | ----------------------
|
|Operating lease obligations |       | $                     
|Purchase obligations        |       |                       
|                            |       |                       
|                            | Total |                       
|                            |       |                       

Our
lease obligations relate to current office and laboratory space. These leases expire through May 2014. Upon expiration of our operating leases we expect to renew the existing leases,
or contract for new leased facilities, at prevailing rates.

During
2007, we entered into a joint research arrangement, known as the Cooperative Research Centre for Sugar Industry Innovation through Biotechnology, with the Commonwealth of
Australia and various other parties for the purpose of developing and gaining access to certain intellectual property. The Commonwealth of Australia established the program to enhance the transfer of
research outputs into commercial or other outcomes of economic, environmental or social benefit to Australia. The terms of the contract stipulate that the contract commenced on January 1, 2007
and our funding commitment continues until July 1, 2010. In connection with this agreement we are obligated to provide funding in the form of cash and in kind exchange. As of
December 31, 2007 the cash portion of our obligation was $504 and the total amount of in kind contribution we are committed to was $1,453. The in kind contribution consists of salaries and
overhead attributable to research associated with the joint research agreement.

Related Party Transactions

We have recorded license and royalty revenue from a related party and have an option grant to another related party. We also have various transactions with our
alliance partner ADM, a related party. Additionally, we recorded an impairment charge on a related party investment. For a full description, see Note 10 to the consolidated financial statements
and Item 13 of this Annual Report on Form 10-K.

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Effects of Inflation

Our assets are primarily monetary, consisting of cash, cash equivalents and short-term investments. Because of their liquidity, these assets are not
directly affected by inflation. Since we intend to retain and continue to use our equipment, furniture and fixtures and leasehold improvements, we believe that the incremental inflation related to
replacement costs of such items will not materially affect our operations. However, the rate of inflation affects our expenses, such as those for employee compensation, which could increase our level
of expenses and the rate at which we use our resources.

Recent Accounting Pronouncements

In December 2007, the staff of the Securities and Exchange Commission (SEC) published Staff Accounting Bulletin (SAB) 110,Year-End Help
for Expensing Employee Stock Options, which amends SAB 107 to allow for the continued use, under certain circumstances, of the "simplified" method in developing an
estimate of the expected term of "plain vanilla" stock options accounted for under FASB Statement No. 123 (revised 2004),Share-Based Payment.
The SEC will accept, under certain circumstances, the use of the simplified method beyond December 31, 2007 for "plain vanilla" options as described in SAB 110. We have evaluated
SAB 110 and determined that we meet the criteria for continued use of the simplified method since our stock option exercise experience does not provide a reasonable basis upon which to estimate
the expected term. We will continue to use the simplified method to develop an estimate of our expected term for "plan vanilla" stock options.

In
December 2007, the EITF reached a consensus on EITF Issue 07-1,Accounting for Collaborative Arrangements.
EITF 07-1 requires collaborators to present the results of activities for which they act as the principal on a gross basis and report any payments received from (made to) other
collaborators based on other applicable GAAP or, in the absence of other applicable GAAP, based on analogy to authoritative accounting literature or a reasonable, rational, and consistently applied
accounting policy election. Further, EITF 07-1 clarified that the determination of whether transactions within a collaborative arrangement are part of a vendor-customer (or
analogous) relationship subject to EITF 01-9,"Accounting for Consideration Given by a Vendor to a Customer (Including a Reseller of the Vendor's Products)."
EITF 07-1 will be effective for us beginning on January 1, 2009. We are currently evaluating the effect of EITF 07-1 on our consolidated financial
statements.

In
December 2007, the FASB issued SFAS No. 160,Noncontrolling Interests in Consolidated Financial Statementsan amendment of Accounting
Research Bulletin No. 51. SFAS 160 addresses the accounting and reporting standards for ownership interests in subsidiaries held by parties other than the parent,
the amount of consolidated net income attributable to the parent and to the noncontrolling interest, changes in a parent's ownership interest, and the valuation of retained noncontrolling equity
investments when a subsidiary is deconsolidated. SFAS 160 also establishes disclosure requirements that clearly identify and distinguish between the interests of the parent and the interests of
the noncontrolling owners. SFAS 160 is effective for fiscal years beginning after December 15, 2008, and will
be adopted by the Company in 2009. We are currently evaluating the effect of SFAS 160 on our consolidated financial statements.

In
December 2007, the FASB issued SFAS No. 141(R),Business Combinations. SFAS No. 141(R) replaces SFAS No. 141, Business Combinations. SFAS
No. 141(R) requires the acquiring entity in a business combination to recognize the full fair value of assets
acquired and liabilities assumed in the transaction; requires certain contingent assets and liabilities acquired to be recognized at their fair values on the acquisition date; requires contingent
consideration to be recognized at its fair value on the acquisition date and changes in the fair value to be recognized in earnings until settled; requires the expensing of most transaction and
restructuring costs; and generally requires the reversals of valuation allowances related to acquired deferred tax assets and changes to acquired income tax uncertainties to also be recognized in
earnings. This accounting standard is effective for financial

53

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statements
issued for fiscal years beginning after December 15, 2008. We are currently evaluating the provisions of SFAS No. 141(R) to determine the potential impact, if any, the
adoption will have on our financial position and results of operations.

In
September 2006, the FASB issued SFAS No.157,Fair Value Measurements.SFAS No. 157 defines fair value, establishes a framework
for measuring fair value in generally accepted accounting principles, and expands disclosures about fair value measurements. The standard is effective for financial statements issued for fiscal years
beginning after November 15, 2007 and interim periods within those fiscal years. Relative to SFAS No. 157, the FASB proposed FASB Staff Positions ("FSP") 157-a, 157-b and 157-c.
FSP 157-a amends SFAS No. 157 to exclude SFAS No. 13, "Accounting for Leases", and its related interpretive accounting
pronouncements that address leasing transactions, while FSP 157-b delays the effective date of SFAS No. 157 for all non-financial assets and non-financial liabilities, except those that
are recognized or disclosed at fair value in the financial statements on a recurring basis. FSP 157-c clarifies the principles in SFAS No. 157 on the fair value measurement of
liabilities. We do not believe the adoption of SFAS No. 157 in the first quarter of 2008 will have a material impact on our financial statements.

In
February 2007, the FASB issued SFAS no. 159,The Fair Value Option for Financial Assets and Financial LiabilitiesIncluding an Amendment of
FAS 115.SFAS No. 159 permits entities to choose to measure many financial instruments and certain other items at fair value. The fair value option established by
this statement permits all entities to choose to measure eligible items at fair value at specified election dates. A business entity shall report unrealized gains and losses on items for which the
fair value option has been elected in earnings (or another performance indicator if the business entity does not report earnings) at each subsequent reporting date. The objective is to improve
financial reporting by providing entities with the opportunity to mitigate volatility in reported earnings caused by measuring related assets and liabilities differently without having to apply
complex hedge accounting provisions. This Statement is expected to expand the use of fair value measurement, which is consistent with FASB's long-term measurement objectives for accounting
for financial instruments. The standard is effective for financial statements issued for fiscal years beginning after November 15, 2007. We do not believe the adoption of SFAS No. 159 in
the first quarter of 2008 will have a material impact on our financial statements.

In
June 2007, the EITF reached a consensus on EITF Issue No. 07-03,Accounting for Nonrefundable Advance Payments for Goods or Services to Be
Used in Future Research and Development Activities. EITF 07-03 concludes that non-refundable advance payments for future research and development
activities should be deferred and capitalized until the goods have been delivered or the related services have been performed. If an entity does not expect the goods to be delivered or services to be
rendered, the capitalized advance payment should be charged to expense. This consensus is effective for fiscal years beginning after December 15, 2007. The initial adjustment to reflect the
effect of applying the consensus as a change in accounting principle would be accounted for as a cumulative-effect adjustment to retained earnings as of the beginning of the year of adoption. We do
not believe that our adoption in the first quarter of 2008 will have a material impact on our financial statements.

ITEM 7A.    QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

Our exposure to market risk is confined to our cash, cash equivalents and marketable securities. The unrestricted cash and cash equivalents and marketable
securities are held for working capital purposes. Our primary investment objective is capital preservation, with a secondary objective of generating income on such capital. We do not enter into
investments for trading or speculative purposes.

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Interest Rate Risk.

We invest in high-quality financial instruments, primarily money market funds, federal agency notes, U.S. treasury notes, investment-grade commercial
paper, and corporate debt securities. All of our interest-bearing securities are subject to interest rate risk, and could decline in value if interest rates fluctuate. Because of the
short-term maturities of our cash equivalents and marketable securities, we do not believe that an increase in market rates would have any significant impact on the realized value of our
marketable securities. However, in a declining interest rate environment, as short term investments mature, reinvestment occurs at less favorable interest rates. Given the short term nature of our
investments, anticipated declining interest rates will negatively impact our investment income.

ITEM 8.    FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The consolidated financial statements and related financial statement schedules required to be filed are indexed on page F-1 and are
incorporated herein.

ITEM 9.    CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE.

None

ITEM 9A.    CONTROLS AND PROCEDURES

Effectiveness of Disclosure Controls and Procedures

As of the end of the period covered by this Annual Report on Form 10-K, under the supervision of our Chief Executive Officer and our Principal
Accounting Officer, we evaluated the effectiveness of our disclosure controls and procedures, as such term is defined in Rule 13a-15(e) and Rule 15d-15(e) under
the Securities Exchange Act of 1934, as amended. Based on this evaluation, our Chief Executive Officer and our Principal Accounting Officer concluded that as of December 31, 2007 our disclosure
controls and procedures are effective as of December 31, 2007 to provide reasonable assurance that information we are required to disclose in reports that we file or submit under the Securities
Exchange Act of 1934 (1) is recorded, processed, summarized and reported within the time periods specified in Securities and Exchange Commission rules and forms, and (2) is accumulated
and communicated to our management, including our Chief Executive Officer and our Principal Accounting Officer, as appropriate to allow timely decisions regarding required disclosure. Our disclosure
controls and procedures include components of our internal control over financial reporting. Management's assessment of the effectiveness of our internal control over financial reporting is expressed
at the level of reasonable assurance because a control
system, no matter how well designed and operated, can provide only reasonable, but not absolute, assurance that the control system's objectives will be met.

Management's Annual Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as defined in
Rules 13a-15(f) and 15d-15(f) of the Securities Exchange Act of 1934, as amended. Our internal control over financial reporting is a process designed to provide
reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Our
internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the
transactions and dispositions of our assets; (ii) provide reasonable assurance that transactions are recorded to permit preparation of financial statements in accordance with generally accepted
accounting principles, and that receipts and expenditures of the company are made only in accordance with authorizations of our management and directors; and (iii) provide reasonable assurance
regarding prevention or timely detection of

55

---



unauthorized
acquisition, use or disposition of our assets that could have a material effect on our financial statements.

Because
of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods
are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management
assessed the effectiveness of our internal control over financial reporting as of December 31, 2007. In making this assessment, management used the criteria set forth
inInternal Control-Integrated Frameworkissued by the Committee of Sponsoring Organizations of the Treadway Commission ("COSO").

Based
on its assessment of internal control over financial reporting, management has concluded that, as of December 31, 2007, our internal control over financial reporting was
effective to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted
accounting principles.

The
effectiveness of our internal control over financial reporting as of December 31, 2007 has been audited by PricewaterhouseCoopers LLP, an independent registered public
accounting firm, as stated in their report which is included herein.

Changes in Internal Control over Financial Reporting

There have been no changes in our internal control over financial reporting identified in connection with the evaluation required by
Rule 13a-15(d) of the Exchange Act that occurred during our last fiscal quarter in the period covered by this Annual Report on Form 10-K that have materially affected, or are
reasonably likely to materially affect, our internal control over financial reporting.

ITEM 9B.    OTHER INFORMATION

Our policy governing transactions in our securities by our directors, officers, and employees permits our officers, directors, employees, and entities affiliated
with our directors to enter into trading plans complying with Rule 10b5-l under the Securities Exchange Act of 1934, as amended. We have been advised that during the quarter ended
December 31, 2007, Brian F. Igoe, our Vice President and Chief Brand Officer, Oliver P. Peoples, our Chief Scientific Officer and Vice President, Research, Anthony J. Sinskey, a Director of the
Company, and Vertical Fund I, L.P. and Vertical Fund II, L.P. entered into trading plans in accordance with Rule 10b5-l and our policy governing transactions in our
securities. We undertake no obligation to update or revise the information provided herein, including for revision or termination of an established trading plan. Generally, under these trading plans,
the individual relinquishes control over the transactions once the trading plan is put into place. Accordingly, sales under these plans may occur at any time, including possibly before, simultaneously
with, or immediately after significant events involving the Company.

We
anticipate that, as permitted by Rule 10b5-1 and our policy governing transactions in our securities, some or all of our officers, directors and employees may establish trading
plans in the future. We intend to disclose the names of executive officers and directors who establish a trading plan in compliance with Rule 10b5-1 and the requirements of our policy governing
transactions in our securities in our future quarterly and annual reports on Form 10-Q and 10-K filed with the Securities and Exchange Commission. However, we undertake no obligation to update
or revise the information provided herein, including for revision or termination of an established trading plan, other than in such quarterly and annual reports.

56

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PART III

Pursuant to General Instructions G to Form 10-K, the information required for Part III, Items 10, 11, 12, 13 and 14, is
incorporated herein by reference from the Company's proxy statement for the Annual Meeting of Stockholders to be held on May 30, 2008 which is expected to be filed not later then
120 days after the fiscal year end.

PART IV

ITEM 15.    EXHIBITS, FINANCIAL STATEMENT SCHEDULES





|Exhibit
Number |  | Description                                                                                                                       
|-------------- |  | ----------------------------------------------------------------------------------------------------------------------------------
|3.1(1)         |  | Amended and Restated Certificate of Incorporation of the Registrant                                                               
|3.3(1)         |  | Amended and Restated By-laws of the Registrant                                                                                    
|4.1(1)         |  | Specimen Stock Certificate for shares of the Registrant's Common Stock                                                            
|4.2(1)         |  | Form of Common Stock Purchase Warrant issued in each of the Series I Financing, the Series J Financing and the Series 04 financing
|10.1(1)       |  | 1995 Stock Plan                                                                                                                   
|10.1.1(1)     |  | 1995 Stock Plan, Form of Incentive Stock Option Agreement                                                                         
|10.1.2(1)     |  | 1995 Stock Plan, Form of Non-Qualified Stock Option Agreement                                                                     
|10.2(1)       |  | 2005 Stock Plan                                                                                                                   
|10.2.1(1)     |  | 2005 Stock Plan, Form of Incentive Stock Option Agreement                                                                         
|10.2.2(1)     |  | 2005 Stock Plan, Form of Non-Qualified Stock Option Agreement                                                                     
|10.3(1)       |  | 2006 Stock Option and Incentive Plan                                                                                              
|10.3.1(1)     |  | 2006 Stock Option and Incentive Plan, Form of Incentive Stock Option Agreement                                                    
|10.3.2(1)     |  | 2006 Stock Option and Incentive Plan, Form of Non-Qualified Stock Option Agreement                                                
|10.3.3(1)     |  | 2006 Stock Option and Incentive Plan, Form of Director Non-Qualified Stock Option Agreement                                       

57

---



|10.4#(1)  |  | License Agreement between the Registrant and Massachusetts Institute of Technology dated July 15, 1993, as amended                                                      
|--------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|10.5#(1)  |  | Commercial Alliance Agreement by and among the Registrant, ADM/Metabolix Sales Company, LLC and ADM Polymer Corporation dated July 14, 2006                             
|10.6#(1)  |  | Operating Agreement of ADM/Metabolix Sales Company, LLC by and between the Registrant and ADM Polymer Corporation dated July 14, 2006                                   
|10.7(1)   |  | Letter Agreement by and between the Registrant and Archer Daniels Midland Company dated November 3, 2004                                                                
|10.8#(1)  |  | Technology Alliance and Option Agreement by and between the Registrant and ADM Polymer Corporation dated as of November 4, 2004                                         
|10.9#(1)  |  | First Amendment to Technology Alliance and Option Agreement by and between the Registrant and ADM Polymer Corporation dated as of September 8, 2005                     
|10.10*   |  | Employment Agreement between the Registrant and Richard P. Eno dated February 20, 2008                                                                                  
|10.11(1) |  | Employment Agreement between the Registrant and Oliver P. Peoples dated July 20, 2006                                                                                   
|10.12(1) |  | Amended and Restated Employment Agreement between the Registrant and Johan van Walsem dated September 22, 2006                                                          
|10.13(1) |  | Amended and Restated Employment Agreement between the Registrant and Robert C. Findlen dated September 22, 2006                                                         
|10.14(1) |  | Employment Agreement between the Registrant and Brian F. Igoe dated August 29, 2006                                                                                     
|10.15(1) |  | Form of Employee Noncompetition, Nondisclosure and Inventions Agreement with Oliver P. Peoples and Johan van Walsem                                                     
|10.16(1) |  | Form of Noncompetition, Nondisclosure and Inventions Agreement with Robert C. Findlen and Brian F. Igoe                                                                 
|10.17(4) |  | Employment Agreement between the Registrant and Jay Kouba dated June 7, 2007                                                                                            
|10.18(5) |  | Separation Agreement between the Registrant and James J. Barber dated May 3, 2007                                                                                       
|10.19(1) |  | Form of Indemnification Agreement between the Registrant and its Directors and Officers                                                                                 
|10.20(1)  |  | Lease Agreement between the Registrant and 21 Erie Realty Trust dated as of December 29, 2003 for the premises located at 21 Erie Street, Cambridge, Massachusetts 02139
|10.21(3)  |  | Lease between Fortune Wakefield, LLC ("Landlord") and Metabolix, Inc. dated March 30, 2007                                                                              
|10.22(1)  |  | Fifth Amended and Restated Stockholders Agreement by and among the Registrant and certain of its stockholders dated January 19, 2006                                    
|10.23(1)  |  | Amendment No. 1 to Fifth Amended and Restated Stockholders Agreement by and among the Registrant and certain of its stockholders dated July 12, 2006                    
|10.24(1)  |  | Stock Purchase Agreement between the Registrant and Archer Daniels Midland Company dated July 12, 2006                                                                  

58

---



|10.25#(1) |  | License Agreement between the Registrant and Tepha, Inc. dated as of October 1, 1999                                  
|--------- |  | ----------------------------------------------------------------------------------------------------------------------
|10.26#(1) |  | License Agreement between the Registrant and Tepha, Inc. dated as of September 9, 2003                                
|10.27(6)* |  | Exclusive License Agreement between the Registrant and Abbott Laboratories dated November 12, 2007                    
|10.28*   |  | Form of Employee Noncompetition, Confidentiality and Inventions Agreement with Richard P. Eno                         
|21.1(2)   |  | Subsidiaries of the Registrant                                                                                        
|23.1*     |  | Consent of PricewaterhouseCoopers LLP, an independent registered public accounting firm                               
|24.1      |  | Power of Attorney (incorporated by reference to the signature page of this Annual Report on Form 10-K)                
|31.1*     |  | Certification Pursuant to Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934                     
|32.1*     |  | Certification Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

---

59

---





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.

|               |  | METABOLIX, INC.
|-------------- |  | ---------------
|March 13, 2008 |  | By:            

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Jay Kouba, Sarah P. Cecil, and Aninda Katragadda, jointly
and severally, his or her attorney-in-fact, with the power of substitution, for him or her in any and all capacities, to sign any amendments to this Annual Report on
Form 10-K and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all
that each of said attorneys-in-fact, or his or her substitute or substitutes, may do or cause to be done by virtue hereof.

Pursuant
to the requirements of the Securities Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates
indicated.

|Name                                            |  | Title                                                                                                            |  | Date          
|----------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------- |  | --------------
|                                                |  |                                                                                                                  |  |               
|/s/JAY KOUBAJay Kouba                           |  | President and Chief Executive Officer and Director (Principal Executive Officer and Principal Financial Officer) |  | March 13, 2008
|/s/ANINDA KATRAGADDAAninda Katragadda           |  | Director of Finance and Corporate Controller (Principal Accounting Officer)                                      |  | March 13, 2008
|/s/EDWARD M. GILESEdward M. Giles               |  | Director                                                                                                         |  | March 13, 2008
|/s/PETER N. KELLOGGPeter N. Kellogg             |  | Director                                                                                                         |  | March 13, 2008
|/s/JACK W. LASERSOHNJack W. Lasersohn           |  | Director                                                                                                         |  | March 13, 2008
|/s/EDWARD M. MULLEREdward M. Muller             |  | Director                                                                                                         |  | March 13, 2008
|/s/OLIVER P. PEOPLESOliver P. Peoples           |  | Director                                                                                                         |  | March 13, 2008
|/s/ANTHONY J. SINSKEYAnthony J. Sinskey, Sc.D.  |  | Director                                                                                                         |  | March 13, 2008
|/s/MATTHEW STROBECKMatthew Strobeck             |  | Director                                                                                                         |  | March 13, 2008
|/s/ROBERT L. VAN NOSTRANDRobert L. Van Nostrand |  | Director                                                                                                         |  | March 13, 2008

60

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METABOLIX, INC.

Index to Consolidated Financial Statements



|                                                                                                                                                  |  | Page
|------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----
|Report of Independent Registered Public Accounting Firm                                                                                           |  | F-2 
|Consolidated Balance Sheets as of December 31, 2007 and 2006                                                                                      |  | F-3 
|Consolidated Statements of Operations for the Years Ended December 31, 2007, 2006, and 2005                                                       |  | F-4 
|Consolidated Statements of Cash Flows for the Years Ended December 31, 2007, 2006, and 2005                                                       |  | F-5 
|Consolidated Statements of Changes in Stockholders' Equity (Deficit) and Comprehensive Loss for the Years Ended December 31, 2007, 2006, and 2005 |  | F-6 
|Notes to Consolidated Financial Statements                                                                                                        |  | F-7 

F-1

---





REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To
the Board of Directors and Stockholders of Metabolix, Inc.

In
our opinion, the accompanying consolidated balance sheets and the related consolidated statements of operations, of stockholders' equity (deficit) and comprehensive loss, and of cash
flows present fairly, in all material respects, the financial position of Metabolix, Inc. and its subsidiary at December 31, 2007 and 2006, and the results of their operations and their cash
flows for each of the three years in the period ended December 31, 2007 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the
Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2007, based on criteria established inInternal
ControlIntegrated Frameworkissued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company's management is responsible for
these financial statements, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in
Management's Annual Report on Internal Control over Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on these financial statements and on the Company's
internal control over financial reporting based on our audits (which was an integrated audit in 2007). We conducted our audits in accordance with the standards of the Public Company Accounting
Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and
whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the
amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation.
Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing
and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the
circumstances. We believe that our audits provide a reasonable basis for our opinions.

As
discussed in Note 3 to the consolidated financial statements, the Company changed the manner in which it accounts for share-based compensation effective January 1, 2006 and
uncertain tax positions effective January 1, 2007.

A
company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of
financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures
that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide
reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and
expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or
timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

Because
of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future
periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/
PricewaterhouseCoopers LLP

Boston,
Massachusetts
March 13, 2008

F-2

---





METABOLIX, INC.        CONSOLIDATED BALANCE SHEETS        (In thousands, except share and per share amounts)

|                                       |                                                                                                                                                                                                            | December 31,
2007                          |       | December 31,
2006 |        
|-------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------ | ----- | ----------------- | -------
|Assets                                 |                                                                                                                                                                                                            |                                            |       |                   |        
|Current assets:                        |                                                                                                                                                                                                            |                                            |       |                   |        
|                                       | Cash and cash equivalents                                                                                                                                                                                  |                                            | $     | 22,686            |        
|                                       | Short-term investments                                                                                                                                                                                     |                                            |       | 86,640            |        
|                                       | Accounts receivable                                                                                                                                                                                        |                                            |       | 133               |        
|                                       | Due from related parties                                                                                                                                                                                   |                                            |       | 1,216             |        
|                                       | Unbilled receivable                                                                                                                                                                                        |                                            |       | 198               |        
|                                       | Prepaid expenses and other current assets                                                                                                                                                                  |                                            |       | 673               |        
|                                       |                                                                                                                                                                                                            |                                            |       |                   |        
|                                       |                                                                                                                                                                                                            | Total current assets                       |       |                   | 111,546
|Restricted cash                        |                                                                                                                                                                                                            |                                            | 498   |                   |        
|Property and equipment, net            |                                                                                                                                                                                                            |                                            | 6,890 |                   |        
|Other assets                           |                                                                                                                                                                                                            |                                            | 70    |                   |        
|                                       |                                                                                                                                                                                                            |                                            |       |                   |        
|                                       |                                                                                                                                                                                                            | Total assets                               |       | $                 | 119,004
|                                       |                                                                                                                                                                                                            |                                            |       |                   |        
|Liabilities and Stockholders' Equity   |                                                                                                                                                                                                            |                                            |       |                   |        
|Current Liabilities:                   |                                                                                                                                                                                                            |                                            |       |                   |        
|                                       | Accounts payable                                                                                                                                                                                           |                                            | $     | 299               |        
|                                       | Accrued expenses                                                                                                                                                                                           |                                            |       | 4,195             |        
|                                       | Current portion of deferred rent                                                                                                                                                                           |                                            |       | 165               |        
|                                       | Deferred revenue                                                                                                                                                                                           |                                            |       |                  |        
|                                       |                                                                                                                                                                                                            |                                            |       |                   |        
|                                       |                                                                                                                                                                                                            | Total current liabilities                  |       |                   | 4,659  
|                                       | Deferred rent                                                                                                                                                                                              |                                            |       | 883               |        
|                                       | Long-term deferred revenue                                                                                                                                                                                 |                                            |       | 24,180            |        
|                                       | Other long-term liabilities                                                                                                                                                                                |                                            |       | 80                |        
|                                       |                                                                                                                                                                                                            |                                            |       |                   |        
|                                       |                                                                                                                                                                                                            | Total liabilities                          |       |                   | 29,802 
|                                       |                                                                                                                                                                                                            |                                            |       |                   |        
|Commitments and contingencies (Note 9) |                                                                                                                                                                                                            |                                            |       |                   |        
|Stockholders' Equity:                  |                                                                                                                                                                                                            |                                            |       |                   |        
|                                       | Common stock ($0.01 par value per share); 100,000,000 shares authorized at December 31, 2007 and 2006, 22,576,111 and 20,574,412 shares issued and outstanding at December 31, 2007 and 2006,
respectively |                                            |       | 226               |        
|                                       | Additional paid-in capital                                                                                                                                                                                 |                                            |       | 182,852           |        
|                                       | Deferred compensation                                                                                                                                                                                      |                                            |       |                  |        
|                                       | Accumulated other comprehensive income                                                                                                                                                                     |                                            |       | 236               |        
|                                       | Accumulated deficit                                                                                                                                                                                        |                                            |       | (94,112           | )      
|                                       |                                                                                                                                                                                                            |                                            |       |                   |        
|                                       |                                                                                                                                                                                                            | Total stockholders' equity                 |       |                   | 89,202 
|                                       |                                                                                                                                                                                                            |                                            |       |                   |        
|                                       |                                                                                                                                                                                                            | Total liabilities and stockholders' equity |       | $                 | 119,004
|                                       |                                                                                                                                                                                                            |                                            |       |                   |        

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

F-3

---





METABOLIX, INC.        CONSOLIDATED STATEMENTS OF OPERATIONS        (In thousands, except share and per share amounts)

|                                                             |                                     | Years Ended December 31, |       
|------------------------------------------------------------ | ----------------------------------- | ------------------------ | ------
|
|Revenue:                                                     |                                     |                          |       
|Research and development revenue                             |                                     | $                        | 147   
|License fee revenue                                          |                                     |                          | 500   
|License fee and royalty revenue from related parties         |                                     |                          | 157   
|Grant revenue                                                |                                     |                          | 879   
|                                                             |                                     |                          |       
|                                                             | Total revenue                       |                          |       
|                                                             |                                     |                          |       
|Operating expenses:                                          |                                     |                          |       
|Research and development expenses, including cost of revenue |                                     |                          | 19,901
|Selling, general, and administrative expenses                |                                     |                          | 15,598
|                                                             |                                     |                          |       
|                                                             | Total operating expenses            |                          |       
|                                                             |                                     |                          |       
|                                                             | Loss from operations                |                          |       
|                                                             |                                     |                          |       
|Other income (expense):                                      |                                     |                          |       
|                                                             | Interest income                     |                          |       
|                                                             | Interest expense                    |                          |       
|                                                             | Loss on investment in related party |                          |       
|                                                             |                                     |                          |       
|                                                             |                                     | Net loss                 |       
|                                                             |                                     |                          |       
|Net loss per share:                                          |                                     |                          |       
|                                                             | Basic and Diluted                   |                          | $     
|Number of shares used in per share calculations:             |                                     |                          |       
|                                                             | Basic and Diluted                   |                          |       

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

F-4

---





METABOLIX, INC.        CONSOLIDATED STATEMENTS OF CASH FLOWS        (In thousands)

|                                                                                                                       |                                   | 2007                                                |          | 2006   |         | 2005     |      
|---------------------------------------------------------------------------------------------------------------------- | --------------------------------- | --------------------------------------------------- | -------- | ------ | ------- | -------- | -----
|Cash flows from operating activities                                                                                   |                                   |                                                     |          |        |         |          |      
|Net loss                                                                                                               |                                   | $                                                   | (27,875  | )      | $       | (16,062  | )    
|Adjustments to reconcile net loss to cash used in operating activities:                                                |                                   |                                                     |          |        |         |          |      
|Depreciation and amortization                                                                                          |                                   |                                                     | 1,451    |        |         | 964      |      
|Charge for 401(k) company common stock match                                                                           |                                   |                                                     | 276      |        |         |         |      
|Stock-based compensation                                                                                               |                                   |                                                     | 4,559    |        |         | 3,505    |      
|Loss on investment in related party                                                                                    |                                   |                                                     |         |        |         |         |      
|Changes in operating assets and liabilities:                                                                           |                                   |                                                     |          |        |         |          |      
|                                                                                                                       | Accounts receivable               |                                                     |          | (75    | )       |          | 30   
|                                                                                                                       | Unbilled receivable               |                                                     |          | (108   | )       |          | 282  
|                                                                                                                       | Due from related party            |                                                     |          | (111   | )       |          | (7   
|                                                                                                                       | Prepaid expenses and other assets |                                                     |          | (67    | )       |          | (529 
|                                                                                                                       | Accounts payable                  |                                                     |          | (1,305 | )       |          | 304  
|                                                                                                                       | Accrued expenses                  |                                                     |          | 2,652  |         |          | 479  
|                                                                                                                       | Deferred lease obligation         |                                                     |          | (166   | )       |          | (165 
|                                                                                                                       | Deferred revenue                  |                                                     |          | 9,869  |         |          | 7,596
|                                                                                                                       |                                   |                                                     |          |        |         |          |      
|                                                                                                                       |                                   | Net cash used in operating activities               |          |        | (10,900 | )        |      
|                                                                                                                       |                                   |                                                     |          |        |         |          |      
|Cash flows from investing activities                                                                                   |                                   |                                                     |          |        |         |          |      
|Purchase of property and equipment                                                                                     |                                   |                                                     | (4,662   | )      |         | (1,544   | )    
|Change in restricted cash                                                                                              |                                   |                                                     |         |        |         | (2       | )    
|Purchase of short term investments                                                                                     |                                   |                                                     | (190,862 | )      |         | (118,486 | )    
|Proceeds from sale and maturity of short-term investments                                                              |                                   |                                                     | 201,328  |        |         | 22,956   |      
|                                                                                                                       |                                   |                                                     |          |        |         |          |      
|                                                                                                                       |                                   | Net cash provided by (used) in investing activities |          |        | 5,804   |          |      
|                                                                                                                       |                                   |                                                     |          |        |         |          |      
|Cash flows from financing activities                                                                                   |                                   |                                                     |          |        |         |          |      
|Principal payments for capitalized lease obligations                                                                   |                                   |                                                     |         |        |         | (63      | )    
|Proceeds from issuance of redeemable convertible preferred stock and warrants, net of issuance costs                   |                                   |                                                     |         |        |         | 16,819   |      
|Payments on convertible promissory note                                                                                |                                   |                                                     |         |        |         |         |      
|Advances from investors                                                                                                |                                   |                                                     |         |        |         |         |      
|Proceeds from options exercised                                                                                        |                                   |                                                     | 2,459    |        |         | 91       |      
|Proceeds from warrants exercised                                                                                       |                                   |                                                     | 141      |        |         | 316      |      
|Proceeds from initial public offering net of issuance costs and refund of fractional shares due to reverse stock split |                                   |                                                     |         |        |         | 106,863  |      
|                                                                                                                       |                                   |                                                     |          |        |         |          |      
|                                                                                                                       |                                   | Net cash provided by financing activities           |          |        | 2,600   |          |      
|                                                                                                                       |                                   |                                                     |          |        |         |          |      
|Net increase (decrease) in cash and cash equivalents                                                                   |                                   |                                                     | (2,496   | )      |         | 23,347   |      
|Cash and cash equivalents at beginning of period                                                                       |                                   |                                                     | 25,182   |        |         | 1,835    |      
|                                                                                                                       |                                   |                                                     |          |        |         |          |      
|Cash and cash equivalents at end of period                                                                             |                                   | $                                                   | 22,686   |        | $       | 25,182   |      
|                                                                                                                       |                                   |                                                     |          |        |         |          |      
|Supplemental disclosure of cash flow information                                                                       |                                   |                                                     |          |        |         |          |      
|Cash paid during the year for interest                                                                                 |                                   | $                                                   |         |        | $       | 5        |      
|Supplemental disclosure of noncash activities                                                                          |                                   |                                                     |          |        |         |          |      
|Conversion of advances from investors to preferred stock                                                               |                                   |                                                     |         |        |         | (613     | )    
|Conversion of preferred stock to common stock                                                                          |                                   |                                                     |         |        |         | 61,443   |      

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

F-5

---





METABOLIX, INC.
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) AND COMPREHENSIVE LOSS
(In thousands, except share amounts)

|                                                                                                    |  | Common Stock |   | Treasury Stock |     |  |         |   |   | Accumulated
other
comprehensive
income |   |   |         |   |   |      |  
|--------------------------------------------------------------------------------------------------- |  | ------------ | - | -------------- | --- |  | ------- | - | - | -------------------------------------- | - | - | ------- | - | - | ---- | -
|
|
|Balance, December 31, 2004                                                                          |  | 1,808,641    |   | $              | 18  |  | 10,624  |   | $ | (35                                    | ) | $ | 3,595   |   | $ |     |  
|Exercise of common stock options                                                                    |  | 4,187        |   |                |     |  |         |   |   |                                        |   |   | 12      |   |   |      |  
|Stock-based compensation related to stock options                                                   |  |              |   |                |     |  |         |   |   |                                        |   |   | 27      |   |   |      |  
|Net loss                                                                                            |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|                                                                                                    |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|Balance, December 31, 2005                                                                          |  | 1,812,828    |   | $              | 18  |  | 10,624  |   | $ | (35                                    | ) | $ | 3,634   |   | $ |     |  
|                                                                                                    |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|2005 Comprehensive loss                                                                             |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|                                                                                                    |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|Exercise of common stock warrants                                                                   |  | 383,586      |   |                | 4   |  |         |   |   |                                        |   |   | 312     |   |   |      |  
|Exercise of common stock options                                                                    |  | 40,867       |   |                | 1   |  |         |   |   |                                        |   |   | 90      |   |   |      |  
|Stock-based compensation related to stock options                                                   |  |              |   |                |     |  |         |   |   |                                        |   |   | 3,717   |   |   | (212 | )
|Treasury stock restored to authorized but unissued                                                  |  | (10,624      | ) |                |    |  | (10,624 | ) |   | 35                                     |   |   | (35     | ) |   |      |  
|Conversion of redeemable convertible preferred stock into common stock upon initial public offering |  | 9,992,041    |   |                | 100 |  |         |   |   |                                        |   |   | 61,343  |   |   |      |  
|Issuance of common stock upon initial public offering, net of offering costs of $10,153             |  | 8,355,714    |   |                | 83  |  |         |   |   |                                        |   |   | 106,742 |   |   |      |  
|Change in unrealized gain on investments                                                            |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|Net loss                                                                                            |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|                                                                                                    |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|Balance, December 31, 2006                                                                          |  | 20,574,412   |   | $              | 206 |  |        |   | $ |                                       |   | $ | 175,803 |   | $ | (212 | )
|                                                                                                    |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|2006 Comprehensive loss                                                                             |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|                                                                                                    |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|Exercise of common stock warrants                                                                   |  | 975,479      |   |                | 10  |  |         |   |   |                                        |   |   | 131     |   |   |      |  
|Exercise of common stock options                                                                    |  | 1,021,354    |   |                | 10  |  |         |   |   |                                        |   |   | 2,449   |   |   |      |  
|Stock-based compensation related to stock options                                                   |  |              |   |                |     |  |         |   |   |                                        |   |   | 4,347   |   |   | 212  |  
|Issuances of common stock for 401K match                                                            |  | 4,866        |   |                |    |  |         |   |   |                                        |   |   | 122     |   |   |      |  
|Change in unrealized gain on investments                                                            |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|Net loss                                                                                            |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|                                                                                                    |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|Balance, December 31, 2007                                                                          |  | 22,576,111   |   | $              | 226 |  |        |   | $ |                                       |   | $ | 182,852 |   | $ |     |  
|                                                                                                    |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|2007 Comprehensive loss                                                                             |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  
|                                                                                                    |  |              |   |                |     |  |         |   |   |                                        |   |   |         |   |   |      |  

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

F-6

---





METABOLIX, INC.        NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS        (In thousands, except for share and per share amounts)

1. Nature of Business

Metabolix, Inc. (the "Company") uses advanced biotechnology to develop environmentally sustainable, economically attractive alternatives to
petrochemical-based plastics, energy and chemicals. The Company is a leader in applying the advanced tools of metabolic engineering and molecular biology to efficiently produce biobased plastic in
microbial systems and directly in non-food plant crops. The Company is subject to risks common to companies in the biotechnology industry including, but not limited to, development by the Company's
competitors of new technological innovations, dependence on key personnel, protection of proprietary technology, the need to obtain additional funding, and compliance with government regulations.

2. Initial Public Offering

In November 2006, the Company completed its initial public offering of 7,820,000 shares of common stock at an initial public offering price of $14.00 per share.
Net proceeds were $99,327 after deducting underwriting discounts and commissions and other offering expenses. Offering expenses, excluding underwriting discounts and commissions, were $2,489, and
included legal, accounting and printing costs and various other fees associated with registration and listing of the Company's common stock. Concurrent with this offering, Archer Daniels Midland
Company ("ADM") purchased 535,714 shares at an initial offering price of $14.00 per share, and the Company realized additional net proceeds of $7,500. The Company's redeemable convertible
preferred stock was converted on a one-to-one basis into 9,992,041 shares of common stock upon the closing of the initial public offering.

3. Summary of Significant Accounting Policies

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Metabolix Securities Corporation and Metabolix
Canada. Metabolix Canada was closed during 2005. All significant intercompany transactions were eliminated.

Use of Estimates

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

Cash and Cash Equivalents

The Company considers all highly liquid investments purchased with an original maturity date of ninety days or less at the date of purchase to be cash
equivalents.

Short-Term Investments

The Company considers all highly liquid investments with a maturity date of one year or less at the balance sheet date to be short-term investments.
Short-term investments consist of corporate debt and asset backed securities at December 31, 2007 and 2006. All short-term investments were classified as

F-7

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

3. Summary of Significant Accounting Policies (Continued)

available
for sale as of December 31, 2007 and 2006. See Note 5 for further discussion on short-term investments.

Restricted Cash

The Company has restricted cash, consisting of a certificate of deposit supporting a letter of credit, of $498 at December 31, 2007 and 2006, respectively,
in connection with one of its leased facilities.

Comprehensive Income (Loss)

Statement of Financial Accounting Standards No. 130,Reporting Comprehensive Income("SFAS No. 130"), requires that changes in comprehensive income be shown in the financial statements with the same prominence as other financial statements. Comprehensive income (loss)
is comprised of net income (loss) and certain changes in stockholder's equity that are excluded from net income (loss). The Company includes unrealized gains and losses on marketable securities in
other comprehensive income (loss).

Concentration of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk primarily consist of cash and cash equivalents and
short-term investments. The Company primarily invests its excess cash and cash equivalents in money market funds, federal agency notes, U.S. treasury notes, investment-grade commercial
paper, and corporate debt securities. Accordingly, the management believes these investments are subject to minimal credit and market risk and are of high credit quality.

Fair Value of Financial Instruments

The carrying amounts of the Company's financial instruments as of December 31, 2007 and 2006, which include cash equivalents, accounts receivable, unbilled
receivable, accounts payable, and accrued expenses, approximate their fair values due to the short-term nature of these instruments.

Segment Information

Statement of Financial Accounting Standards No. 131,Disclosures about Segments of an Enterprise and Related Information
("SFAS 131"), establishes standards for reporting information on operating segments in interim and annual financial statements. The Company operates in one segment,
which is the business of developing and commercializing technologies for the production of polymers and chemicals in plants and in microbes. The chief operating decision-makers review the Company's
operating results on a consolidated basis and manage operations as a single operating segment located, and operated, in the United Stated of America. All revenue is earned, and all assets are held, in
the United States of America.

Property and Equipment

Property and equipment are stated at cost less accumulated depreciation. Repairs and maintenance are charged to operations as incurred. Gains and losses on the
disposition of equipment are recorded in net income or loss and the related cost and accumulated depreciation are removed from the

F-8

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

3. Summary of Significant Accounting Policies (Continued)

respective
accounts. Depreciation is computed using the straight-line method over the estimated useful lives as follows:

Asset Description

Estimated Useful LifeEquipment

2.53 yearsFurniture and Fixtures

5Software

3Leasehold improvements

Shorter of useful life or term of lease


The
Company accounts for operating lease incentive payments received from the lessor in accordance with Statement of Financial Accounting Standards No. 13, Accounting for Leases("SFAS 13"). Under
SFAS 13, leasehold improvements made by a lessee that are funded by landlord incentives or
allowances under an operating lease should be recorded by the lessee as leasehold improvement assets and amortized over the shorter of their economic lives or the lease term. The Company records
landlord incentive received as deferred rent and amortizes those amounts as reductions to lease expense over the lease term.

Impairment of Long-Lived Assets

The Company accounts for the impairment and disposal of long-lived assets utilizing Statement of Financial Accounting Standards No. 144, Accounting for the
Impairment or Disposal of Long-Lived Assets("SFAS 144"). SFAS 144 requires that long-lived
assets, such as property, plant and equipment, and purchased intangible assets subject to amortization, be reviewed for impairment whenever events or changes in circumstances indicate that the
carrying amount of an asset may not be recoverable. SFAS No. 144 further refines the requirements of Statement of Financial Accounting Standards No. 121, Accounting for the Impairment of Long-Lived Assets and
Long-Lived Assets to be Disposed of("SFAS No. 121"), that
companies recognize an impairment loss only if the carrying amount of a long-lived asset is not recoverable based on its undiscounted future cash flows and measure an impairment loss as
the difference between the carrying amount and fair value of the asset.

Redeemable Convertible Preferred Stock

Prior to its conversion to common stock, the Company's preferred stock contained certain redemption features that were considered outside the control of the
Company, including redemption upon a change in control. Therefore the Company presented redeemable convertible preferred stock as temporary equity in the mezzanine level of the consolidated balance
sheet. All of the preferred stock was converted to common stock on a one-to-one basis in the fourth quarter of 2006 in conjunction with the Company's initial public offering.

Research and Development Expenses

All costs associated with internal research and development as well as research and development services conducted for others are expensed as incurred. Research
and development expenses include direct costs for salaries, employee benefits, subcontractors, facility related expenses, depreciation and stock-based compensation related to employees and
non-employees involved in the company's research and development. Costs related to revenue-producing contracts are recorded as research and

F-9

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

3. Summary of Significant Accounting Policies (Continued)

development
expenses. The Company's portion of the costs incurred by ADM relating to the pre-commercial manufacturing of Mirel are netted against amounts due from ADM and recorded as due
from related party on the face of the balance sheet.

Revenue Recognition

The Company recognizes revenue in accordance with the Staff Accounting Bulletin No. 104,Revenue
Recognition("SAB 104"), and Emerging Issues Task Force (EITF) Issue No. 00-21,Revenue Arrangements with Multiple
Deliverables.Principal sources of revenue are government grants, license fees, royalty revenues and research and development payments that are primarily derived from
collaborative agreements with other companies.

The
Company's research and development revenue includes revenue from research services and delivery of specified materials or sample product produced from the research services. Revenue
is recognized upon completion of the related services. Revenue related to product sales from the Company's pre-commercial manufacturing operations have been recorded in research and development
revenue in the consolidated statements of operations.

Fees
to license the Company's proprietary and licensed technologies are recognized only after both the license period has commenced and the technology has been delivered. Royalty revenue
is recognized when it becomes determinable and collectability is reasonably assured, otherwise the Company recognizes revenue upon receipt of payment.

The
Company analyzes its multiple element arrangements to determine whether the elements can be separated and accounted for individually as separate units of accounting in accordance
with EITF No. 00-21. The Company recognizes up-front license payments or technology access fees as revenue if the license or access fee has stand-alone value and
the fair value of the undelivered items can be determined. If the license is considered to have stand-alone value but the fair value of any of the undelivered services or items cannot be determined,
the license payments are initially deferred and recognized as revenue over the period of performance of undelivered services or as undelivered items are delivered.

Revenue
from milestone payments related to arrangements under which the Company has continuing performance obligations are recognized as revenue upon achievement of the milestone only if
all of the following conditions are met: the milestone payments are nonrefundable; achievement of the milestone was not reasonably assured at the inception of the arrangement; substantive effort is
involved in achieving the milestone; and the amount of the milestone is reasonable in relation to the effort expended or the risk associated with the achievement of the milestone. If any of these
conditions are not met, the milestone payments are deferred and recognized as revenue over the term of the arrangement as the Company completes its performance obligations.

Government
grant revenue is earned as research expenses related to the grants are incurred.

Intellectual Property Costs

The Company includes all costs associated with the prosecution and maintenance of patents within general and administrative expenses in the consolidated statement
of operations.

F-10

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

3. Summary of Significant Accounting Policies (Continued)

Stock-Based Compensation

On January 1, 2006, the Company adopted Statement of Financial Accounting Standards No. 123(R),Share-Based
Payments("SFAS No. 123(R)"). Under the provisions of SFAS No. 123(R), compensation cost recognized for the year ended December 31, 2006 and 2007 includes
compensation cost for all share-based payments granted to employees subsequent to January 1, 2006, based on the grant-date fair value estimated in accordance with the provisions of
SFAS No. 123(R) and will be recognized over the vesting period of the applicable award on a straight-line basis. There is no expense recorded for options which were granted prior to
January 1, 2006 under the minimum value method and with an exercise price equal to the fair value of common stock and that had a fixed measurement date at the time of grant.

Prior
to January 1, 2006, as permitted by Statement of Financial Accounting Standards No. 123,Accounting for Stock-Based
Compensation("SFAS No. 123"), the Company accounted for its stock-based awards to employees and directors using the intrinsic value method prescribed in Accounting
Principles Board Opinion No. 25 ("APB No. 25"),Accounting for Stock Issued to Employees,and related interpretations. The Company
recognized compensation expense for stock options granted to nonemployees in accordance with the requirements of SFAS No. 123 and Emerging Issues Task Force ("EITF") Issue
No. 96-18,Accounting for Equity Instruments that Are Issued to Other than Employees for Acquiring, or in Conjunction with Selling, Goods or
Services("EITF 96-18"). EITF 96-18 required that such equity instruments be recorded at their fair value at the measurement date, which
is generally the vesting date of the instruments. Therefore, the measurement of stock-based compensation was subject to periodic adjustments as the underlying equity instruments vest. See
Note 13 for a description of the impact of this standard on the Company's financial statements.

Basic and Diluted Net Loss per Common Share

Basic net loss per share is computed by dividing net loss by the weighted-average number of shares of common stock outstanding and warrants outstanding that were
previously issued for little or no consideration, excluding the dilutive effects of common stock equivalents. Common stock equivalents include stock options, certain warrants and convertible
securities. Diluted net income per share assumes the conversion of all outstanding shares of redeemable convertible preferred stock using the "if converted" method, if dilutive, and includes the
dilutive effect of common stock equivalents under the treasury stock method.

The
number of shares of potentially dilutive common stock related to redeemable convertible preferred stock, options, and warrants that were excluded from the calculation of dilutive
shares since

F-11

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

3. Summary of Significant Accounting Policies (Continued)

the
inclusion of such shares would be anti-dilutive for the three years ended December 31, 2007 are shown below:

Year ended
December 31,2007

2006

2005Redeemable convertible preferred stock



8,471,666

7,605,556Options

2,151,784

2,764,647

2,036,982Warrants

69,343

829,890

939,150Total

2,221,127

12,066,203

10,581,688


Foreign Currency Translation

The financial statements of the Company's former wholly-owned Canadian subsidiary, which was closed during 2005, were remeasured using the U.S. dollar as the
functional currency. Monetary assets and liabilities were translated using the current exchange rate. Nonmonetary assets and liabilities were remeasured using historical exchange rates. Revenue and
expenses were remeasured using average exchange rates for the period, except for items related to nonmonetary assets and liabilities, which were
translated using historical exchange rates. All remeasurement gains and losses were included in determining net loss for the period in which exchange rates changed and were immaterial for all years
presented.

Income Taxes

The Company follows the provisions of Statement of Financial Accounting Standards No. 109,Accounting for Income
Taxes("SFAS No. 109"). SFAS No. 109 requires recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been
included in the financial statements or tax returns. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial statement and tax basis of
assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. A valuation allowance is provided to reduce the deferred tax asset to a level
which, more likely than not, will be realized. In addition, the company adopted Finncial Accounting Standards Interpretation No. 48, Accounting for Uncertainty in Income Taxes ("FIN 48")
on January 1, 2007. See Note 14 for further discussion of income taxes.

Recent Accounting Pronouncements

In December 2007, the staff of the Securities and Exchange Commission (SEC) published Staff Accounting Bulletin (SAB) 110,Year-End Help
for Expensing Employee Stock Options, which amends SAB 107 to allow for the continued use, under certain circumstances, of the "simplified" method in developing an
estimate of the expected term of "plain vanilla" stock options accounted for under FASB Statement No. 123 (revised 2004),Share-Based Payment.
The SEC will accept, under certain circumstances, the use of the simplified method beyond December 31, 2007 for "plain vanilla" options as described in SAB 110. We have evaluated
SAB 110 and determined that we meet the criteria for continued use of the simplified method since our stock option exercise experience does not provide a

F-12

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

3. Summary of Significant Accounting Policies (Continued)

reasonable
basis upon which to estimate the expected term. The Company will continue to use the simplified method to develop an estimate of our expected term for "plain vanilla" stock options.

In
December 2007, the EITF reached a consensus on EITF Issue 07-1,Accounting for Collaborative Arrangements.
EITF 07-1 requires collaborators to present the results of activities for which they act as the principal on a gross basis and report any payments received from (made to) other
collaborators based on other applicable GAAP or, in the absence of other applicable GAAP, based on analogy to authoritative accounting literature or a reasonable, rational, and consistently applied
accounting policy election. Further, EITF 07-1 clarified that the determination of whether transactions within a collaborative arrangement are part of a vendor-
customer (or analogous) relationship subject to EITF 01-9, "Accounting for Consideration Given by a Vendor to a Customer (Including a Reseller of the Vendor's Products)."
EITF 07-1 will be effective for us beginning on January 1, 2009. The Company is currently evaluating the effect of EITF 07-1 on our consolidated financial
statements.

In
December 2007, the FASB issued SFAS No. 160,Noncontrolling Interests in Consolidated Financial Statementsan amendment of Accounting
Research Bulletin No. 51. SFAS 160 addresses the accounting and reporting standards for ownership interests in subsidiaries held by parties other than the parent,
the amount of consolidated net income attributable to the parent and to the noncontrolling interest, changes in a parent's ownership interest, and the valuation of retained noncontrolling equity
investments when a subsidiary is deconsolidated. SFAS 160 also establishes disclosure requirements that clearly identify and distinguish between the interests of the parent and the interests of
the noncontrolling owners. SFAS 160 is effective for fiscal years beginning after December 15, 2008, and will be adopted by the Company in 2009. The Company is currently evaluating the
effect of SFAS 160 on our consolidated financial statements.

In
December 2007, the FASB issued SFAS No. 141(R),Business Combinations. SFAS No. 141(R) replaces SFAS No. 141, Business Combinations. SFAS
No. 141(R) requires the acquiring entity in a business combination to recognize the full fair value of assets
acquired and liabilities assumed in the transaction; requires certain contingent assets and liabilities acquired to be recognized at their fair values on the acquisition date; requires contingent
consideration to be recognized at its fair value on the acquisition date and changes in the fair value to be recognized in earnings until settled; requires the expensing of most transaction and
restructuring costs; and generally requires the reversals of valuation allowances related to acquired deferred tax assets and changes to acquired income tax uncertainties to also be recognized in
earnings. This accounting standard is effective for financial statements issued for fiscal years beginning after December 15, 2008. The Company is currently evaluating the provisions of SFAS
No. 141(R) to determine the potential impact, if any, the adoption will have on our financial position and results of operations.

In
September 2006, the Financial Accounting Standards Board ("FASB") issued SFAS No.157,Fair Value Measurements("SFAS No. 157").
SFAS No. 157 defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles and expands disclosures about fair value measurements. The standard
is effective for financial statements issued for fiscal years beginning after November 15, 2007 and interim periods within those fiscal years. Relative to SFAS No. 157, the FASB proposed
FASB Staff Positions ("FSP") 157-a, 157-b and 157-c. FSP 157-a amends SFAS No. 157 to exclude SFAS No. 13, "Accounting for Leases",
and its related interpretive accounting pronouncements that address leasing transactions, while FSP 157-b delays the effective date of SFAS

F-13

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

3. Summary of Significant Accounting Policies (Continued)

No. 157
for all non-financial assets and non-financial liabilities, except those that are recognized or disclosed at fair value in the financial statements on a recurring basis.
FSP 157-c clarifies the principles in SFAS No. 157 on the fair value measurement of liabilities. The adoption of SFAS No. 157 in the first quarter of 2008 is not expected to have
a material impact on the financial statements of the Company.

In
February 2007, the FASB issued SFAS No. 159,The Fair Value Option for Financial Assets and Financial LiabilitiesIncluding an Amendment of
FAS 115("SFAS No. 159"). SFAS No. 159 permits entities to choose to measure many financial instruments and certain other items at fair value. The fair
value option established by this statement permits all entities to choose to measure eligible items at fair value at specified election dates. A business entity shall report unrealized gains and
losses on items for which the fair value option has been elected in earnings (or another performance indicator if the business entity does not report earnings) at each subsequent reporting date. The
objective is to improve financial reporting by providing entities with the opportunity to mitigate volatility in reported earnings caused by measuring related assets and liabilities differently
without having to apply complex hedge accounting provisions. SFAS No. 159 is expected to expand the use of fair value measurement, which is consistent with the FASB's long-term
measurement objectives for accounting for financial instruments. The standard is effective for financial statements issued for fiscal years beginning after November 15, 2007. The adoption of
SFAS No. 159 in the first quarter of 2008 is not expected to have a material impact on the financial statements of the Company.

In
June 2007, the FASB's Emerging Issues Task Force, reached a consensus on EITF Issue No. 07-03,Accounting for Nonrefundable Advance Payments
for Goods or Services to Be Used in Future Research and Development Activities. EITF 07-03 concludes that non-refundable advance payments for
future research and development activities should be deferred and capitalized until the goods have been delivered or the related services have been performed. If an entity does not expect the goods to
be delivered or services to be rendered, the capitalized advance payment should be charged to expense. This consensus is effective for fiscal years beginning after December 15, 2007. The
initial adjustment to reflect the effect of applying the consensus as a change in accounting principle would be accounted for as a cumulative-effect adjustment to retained earnings as of the beginning
of the year of adoption. The adoption of EITF 07-03 in the first quarter of 2008 is not expected to have a material impact on the financial statements of the Company.

4. Significant Collaborations

ADM Agreement

On November 3, 2004, the Company signed an agreement with ADM Polymer Corporation ("ADM"), a subsidiary of Archer Daniels Midland Company, to establish an
alliance whereby the Company would provide technology and licenses thereto and research and development services, and ADM would provide manufacturing services and capital necessary to produce biobased
plastic, Mirel on a commercial scale. This agreement was amended by the parties on September 8, 2005 to define certain cost sharing activities related to pre-commercial
manufacturing, to change certain milestones and to make other minor modifications. The arrangement is comprised of two primary agreements: (1) the Technology Alliance and Option Agreement and
(2) the Commercial Alliance Agreement.

F-14

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

4. Significant Collaborations (Continued)

Technology Alliance and Option Agreement

The goal of the Technology Alliance and Option Agreement was to demonstrate the capabilities of the Company's fermentation and recovery technologies at commercial
scale and to prepare a master plan and budget for the construction of a 110 million pound commercial manufacturing facility, which would provide the basis for entering into the Commercial Alliance
Agreement.

The
Technology Alliance and Option Agreement provided ADM with an option (the "Option") to enter into a commercial alliance for further research, development, manufacture, use, and sale
ofMirelon the terms and conditions set forth in the Commercial Alliance Agreement (see below). The Option was exercisable by ADM under certain
conditions at any time until 30 days after the expiration of the term of the Technology Alliance and Option Agreement. On July 12, 2006, ADM exercised this Option.

Under
the Technology Alliance and Option Agreement, ADM made a nonrefundable, noncreditable upfront payment of $3,000 to the Company in 2004. In May 2006, the Company received a $2,000
payment from ADM in recognition of achieving certain technical goals under the Technology Alliance and Option Agreement. Due to future obligations of the Company under the agreements for which fair
value cannot be determined, including the requirement to provide research and development activities and recovery services under the Technology Alliance and Option Agreement and certain manufacturing
services, including compounding, and sales and marketing activities, and other services under the Commercial Alliance Agreement, the entire upfront payment and milestone payments received have been
recorded as deferred revenue. The Company's policy is to expense, as period costs, the direct and incremental costs incurred associated with this collaboration.

The
technology alliance and option agreement was amended in 2005. In accordance, with this amendment ADM agreed to reimburse the Company for one-half of certain costs incurred by the
Company related to the Company's establishment of pre-commercial manufacturing capabilities. Amounts reimbursed in 2006 and 2005 totaled $588 and $621, respectively, and were recorded as deferred
revenue. Further reimbursements were made under the Commercial Alliance agreement as noted below.

Commercial Alliance Agreement

The Commercial Alliance Agreement specifies the terms and structure of the relationship between the Company and ADM. The primary function of this agreement is to
establish the activities and obligations of the Company and ADM by which the parties will commercialize Mirel. These activities include: the establishment of a joint sales company, which has been
named Telles, to market and sell Mirel, the construction of a manufacturing facility capable of producing 110 million pounds of material annually (the "Commercial Manufacturing Facility"), the
licensing of technology to Telles and to ADM, and the conducting of various research, development, manufacturing, sales and marketing, compounding and administrative services by the parties.

F-15

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

4. Significant Collaborations (Continued)

Telles is a limited liability company, formed and equally owned by the Company and ADM, and is intended to: (i) serve as the commercial entity to establish
and develop the commercial market for Mirel, and conduct the marketing and sales in accordance with the goals of the commercial alliance, (ii) assist in the coordination and integration of the
manufacturing, compounding and marketing activities, and (iii) administer and account for financial matters on behalf of the parties. The Company and ADM each have 50% equity and voting
interest in Telles.

A
summary of the key activities under this agreement is as follows: (i) ADM will arrange for, finance the construction of, and own, a facility in which it will manufacture Mirel
under contract to Telles; (ii) the Company will either arrange for and finance the acquisition or construction of a facility in which it will compound Mirel or it will arrange for third parties
to compound Mirel; (iii) the Company, acting in the name and on behalf of Telles, will establish the initial market for Mirel. The Company will also continue its research and development
efforts to further advance the technology and expand and enhance the commercial potential of Mirel. Subject to certain limitations, ADM will finance the working capital requirements of Telles.

Telles
will make up to twelve payments of $1,575 per calendar quarter to the Company to support these activities during ADM's construction of the Commercial Manufacturing Facility. In
the event construction is completed and sale of commercial product commences prior to Telles making all twelve such payments, the quarterly payments will cease and Telles will pay the Company a lump
sum equal to the number of remaining unpaid payments multiplied by $250. Through December 31, 2007, support payments totaling $12,600 have been received by the Company and recorded as deferred
revenue.

During
the construction period of the Commercial Manufacturing Facility all pre-commercial material production expenses incurred by ADM and the Company are shared equally.
Accordingly, from the execution of this agreement in July 2006 through December 31, 2007, ADM has reimbursed the Company $4,277. At December 31, 2007 net reimbursements of $1,094 were
due from ADM. All amounts due or received from ADM relating to this agreement are recorded as deferred revenue.

Upon
the commencement of commercial sales, Telles will pay the Company royalties on sales as well as reimburse it for the cost of services provided pursuant to the Commercial Alliance
Agreement.

While
Telles is a fifty-fifty joint venture, ADM will be advancing a disproportionate share of the financial capital needed to construct the manufacturing plant and to fund its
activities. Therefore, a preferential distribution of cash flow will be used, whereby all profits (after payment of all royalties, reimbursements and fees) from Telles will be distributed to ADM until
ADM's disproportionate investment in the alliance has been returned in full. Once ADM has recouped such amounts, the profits of Telles will be distributed in equal amounts to the parties.

The
Commercial Alliance Agreement provides for expansion of the operations of Telles beyond the initial license of 110 million pounds annual production through an equally-owned
joint venture. While certain principles of the joint venture have been agreed to, the detailed terms and conditions will not be determined until a later date.

Revenue
recognition for amounts deferred through December 31, 2007 is expected to commence approximately at the time of the first commercial sale of Mireland amounts will be recognized proportionately over the
period that the final services are provided over the estimated remaining term of the
Commercial Alliance Agreement.

F-16

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

4. Significant Collaborations (Continued)

The
Commercial Alliance Agreement and related agreements include detailed provisions setting out the rights and obligations of the parties in the event of a termination of the Commercial
Alliance Agreement. These provisions include the right for either party to terminate the Commercial Alliance Agreement upon a material default of a material obligation by the other party after a
notice and cure period has expired. The parties are also permitted to terminate the Commercial Alliance Agreement if a change in circumstances that is not reasonably within the control of a party
makes the anticipated financial return from the project inadequate or too uncertain. Finally, the parties have specific obligations to fulfill in the event of termination or if they file for
bankruptcy protection.

BP America Production Company

On February 14, 2005, the Company signed a joint development agreement with BP to advance the Company's technology for producing PHA polymers in plants and
to conduct an evaluation of the potential for using PHA producing plants in a biomass to energy system. In exchange for the Company completing certain research and development activities, the
agreement provided for BP to pay the Company $500 at the start of each calendar quarter during the term of the agreement with the first two such payments due within five days of the effective date of
the agreement. The Company received $2,000 in 2005 related to this agreement. Due to these amounts being applicable for determining BP's
equity participation in a potential future joint venture between the parties, these amounts were recorded as deferred revenue at December 31, 2005.

In
January 2006, the Company received notice of termination from BP with respect to the joint development agreement and as a result, there are no longer any continuing obligations from
either party. During the year ended December 31, 2006, the Company recognized $2,500 in revenue from the BP arrangement, consisting of the $2,000 of deferred revenue and the $500 final payment
due under the arrangement, which was received in June 2006.

5. Investments

Short-term investments consist of the following:

Amortized
Cost

Unrealized
Gain/(Loss)

Market
ValueDecember 31, 2007Corporate debt securities

$
64,781

$
211

$
64,992Asset-backed securities


21,623


25


21,648Total

$
86,404

$
236

$
86,640December 31, 2006Corporate Debt securities

$
80,604

$
26

$
80,630Asset-backed securities


16,266


2


16,268Total

$
96,870

$
28

$
96,898


As
of December 31, 2007 and 2006 the contractual maturity of all investments was one year or less.

F-17

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

6. Property and Equipment

Property and equipment consisted of the following:

Year Ended
December 31,2007

2006Equipment

$
2,597

$
2,688Furniture and Fixtures


175


63Leasehold improvements


8,117


4,229Software


92


64Total property and equipment, at cost

$
10,981

$
7,044Less: Accumulated depreciation


(4,091
)

(3,371
)Property and equipment, net

$
6,890

$
3,673


Depreciation
expense for the years ended December 31, 2007, 2006, and 2005 was $1,451, $964, and $315 respectively. Accumulated depreciation for equipment acquired under capital
leases was $201 as of December 31, 2005. The company had no leased equipment during 2006 or 2007.

During
2004 the Company received a lease incentive payment of $1,521 from its lessor for leasehold improvements. The Company has recorded the leasehold improvement as an asset and is
amortizing it over its useful life, along with a corresponding deferred rent liability that will be amortized as a reduction of lease expense over the remaining term of the lease.

7. Convertible Promissory Note

In conjunction with the purchase of certain technology in 2001, the Company issued a promissory note in the amount of $2,000. The note accrued interest beginning
January 2002 at a rate of 10% per annum, through March 2005. Payments due on the promissory note were due in quarterly installments of $143 through March 2005. At December 31, 2005, the
convertible promissory note had been paid in full.

8. Accrued Expenses

Accrued expenses consist of the following:

Year Ended
December 31,2007

2006Employee compensation and benefits

$
1,985

$
201Other


1,035


456Pre-commercial manufacturing costs


443


384Professional services


407


306Contracted research and development


325


44Total accrued expenses

$
4,195

$
1,391


F-18

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

9. Commitments and Contingencies

Leases

The Company rents its facilities under operating leases, which expire through May 2014. The Company leased equipment under capital leases with various rates of
interest, ranging from 10.07% to 15.71%, with expiration dates through August 2006. All commitments were collateralized by equipment under lease. Rental payments under operating leases for the years
ended December 31, 2007, 2006 and 2005 were $1,152, $1,051, and $590, respectively. The deferred rent liability recorded on the balance sheet includes the unamortized balance of the landlord
incentive payments and the cumulative difference between actual facility lease payments and lease expense recognized ratably over the operating lease period. At December 31, 2007, the Company's
future minimum payments required under operating leases are as follows:

Year Ending December 31,

Minimum lease payment2008

$
1,1662009


1,1662010


1,1742011


1,1882012


1,0742013 and thereafter


1,318Total minimum lease payments

$
7,086


Funded Research Arrangement with the University of Massachusetts at Lowell

The Company has entered into a fee for service agreement with the University of Massachusetts at Lowell to perform certain research and development activities.
Under this agreement the Company agreed to pay an annual retainer of $40 through 2010. As of December 31, 2007, the Company has committed $120 to the University of Massachusetts at Lowell.

License Agreement with Massachusetts Institute of Technology ("MIT")

The Company's exclusive license agreement with MIT requires the Company to pay annual license fees of $25 and additional potential royalty payments to MIT based
on a percentage of net sales of products or services covered by a patent that is subject to the license. There was $2 and $62 accrued at December 31, 2007 and 2006, respectively.

Joint Research Agreement with the Cooperative Research Centre for Sugar Industry Innovation through Biotechnology

The Company entered a joint research arrangement, known as the Cooperative Research Centre for Sugar Industry Innovation through Biotechnology, with the
Commonwealth of Australia and various other parties for the purpose of developing and gaining access to certain intellectual property. The Commonwealth of Australia established the program to enhance
the transfer of research outputs into commercial or other outcomes of economic, environmental or social benefit to Australia. The terms of the contract stipulate that the contract commenced on
January 1, 2007, and the Company's funding obligation continues until July 1, 2010. In connection with this agreement Metabolix is obligated to

F-19

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

9. Commitments and Contingencies (Continued)

provide
funding in the form of cash and in kind contribution. As of December 31, 2007 the cash portion of our obligation is $504 and the total amount of in kind contribution the company is
committed to is $1,453. The in kind contribution consists of salaries and overhead attributable to research associated with the joint research agreement. The cash and in kind contributions are
recorded as research and development expense as incurred, in the consolidated statements of operations.

10. Related Party Transactions

Tepha, Inc.

During 1999, the Company entered into a sublicense agreement with Tepha, Inc. ("Tepha"), to sublicense technology to Tepha. The president, chief executive
officer and a director of Tepha was a director of the Company at that time. In addition, the Company directors Messrs. Muller and Giles and Dr. Sinskey serve on the Board of Directors of
Tepha. The agreement with Tepha contains provisions for sublicense maintenance fees to be paid to the Company upon Tepha achieving certain financing milestones and for product related milestone
payments. Under the agreement, the Company also
receives royalties on net sales of licensed products or sublicensing revenues received by Tepha, subject to a minimum payment each year.

The
Company recognized license and royalty revenues of $157, $257, and $242, from Tepha for the years ended December 31, 2007, 2006, and 2005 and respectively. As of
December 31, 2007 and December 31, 2006, the Company had an outstanding receivable of $122 and $11 from Tepha which were recorded as due from related parties in the consolidated balance
sheet.

The
Company reviewed its preferred stock investment in Tepha for other than temporary impairment in accordance with Statement of Financial Accounting Standard No. 115, Accounting
for Certain Investments in Debt and Equity Securities ("SFAS No. 115") and determined that at December 31, 2005, its investment was fully impaired based on its current fair value and,
therefore, recorded an asset impairment charge of $700 in the fourth quarter of 2005.

ADM

The Company's collaborative partner ADM made a $5,000 investment in the Company as part of the Series 05 redeemable convertible preferred stock issuance in
January 2006. Concurrent with the Company's initial public offering, ADM purchased $7,500 of the Company's shares in a private placement. ADM makes various payments to the Company under the
collaborative agreements signed during November 2004 and July 2006. See Note 4 for further discussion regarding collaborative agreements with ADM. In addition as of December 31, 2007 and
December 31, 2006, the Company had an outstanding balance receivable of $1,093 and $511 from ADM which was recorded as due from related parties in the consolidated balance sheet.

Dr. ChoKyun Rha

The Company retained Dr. ChoKyun Rha, a related party, to serve as an advisor for the purpose of building and managing business relationships in Asia.
Dr. Rha is the spouse of a director of the Company. In consideration for Dr. Rha's services, on September 20, 2005, the Company granted her a nonqualified stock option for the
purchase of 16,346 shares of the Company's common stock, vesting

F-20

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In thousands, except for share and per share amounts)

10. Related Party Transactions (Continued)

over
a period of four years, with an exercise price of $1.65 per share, which was the fair market value per share of the common stock at the date of grant of the option.

11. Redeemable Convertible Preferred Stock

In connection with the Company's initial public offering in November 2006 and in accordance with the preferred stock agreements, all outstanding shares of
preferred stock were converted into 9,992,041 of the Company's common stock, and at December 31, 2006 there were no shares of preferred stock outstanding.

Warrants

In connection with the issuance of the Series H preferred stock during 2001, the Company issued warrants to purchase 108,239 shares of common stock at an
exercise price of $13.21 per share. The warrants expired five years from issuance date. The warrants were recorded at their relative fair value of $170 as a reduction to the carrying value of the
Series H preferred stock and a corresponding increase to additional paid-in capital. The fair value of the warrants was estimated on the date of grant using the Black-Scholes
option-pricing model with the following assumptions: no dividend yield, 90% volatility, risk-free interest rate of 5.13%, and a life of five years. In connection with the issuance of
Series I preferred stock during 2002, the Company issued warrants to purchase 520,990 shares of common stock at an exercise price of $13.21 per share; concurrently, the Company issued warrants
to purchase 432,983 shares of common stock at an exercise price of $13.21 per share in connection with the exchange of Series H preferred stock for Series I preferred stock. The warrants
expire five years from issuance date. The warrants were recorded at their relative fair value of $1,553 as a reduction to the carrying value of the Series I preferred stock and a corresponding
increase to additional paid-in capital. The fair value of the warrants was estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions: no
dividend yield, 100% volatility, risk-free interest of 4.65%, and a life of five years.

In
conjunction with the issuance of the Series I preferred stock during 2003, the Company issued warrants to purchase 221,238 shares of common stock at an exercise price of $13.21
per share. The warrants expire five years from issuance date. The warrants were recorded at their relative fair value of $149 as a reduction to the carrying value of the Series I preferred
stock and a corresponding increase to additional paid-in capital. The fair value of the warrants was estimated on the date of grant using the Black-Scholes option-pricing model with the
following assumptions: no dividend yield, 100% volatility, risk-free interest of 2.27%, and a life of five years.

F-21

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

11. Redeemable Convertible Preferred Stock (Continued)

In connection with the issuance of Series J preferred stock, the Company issued warrants to purchase 264,865 shares of common stock at an exercise price of
$0.12 per share; concurrently, the Company issued warrants to purchase 988,004 shares of common stock at an exercise price of $0.12 per share in connection with the exchange of Series I
preferred stock for Series J preferred stock. The warrants expire five years from issuance date. In addition, the Company cancelled warrants to purchase 348,386 shares of common stock at an
exercise price of $13.21 per share. The warrants issued were recorded at their relative fair value of $1,282 as a reduction to the carrying value of the Series J preferred and a corresponding
increase to additional paid-in capital, net of the reversal of the canceled warrants. The fair value of the warrants was estimated on the date of grant using the Black-Scholes
option-pricing model with the following assumptions: no dividend yield, 100% volatility, risk-free interest rate of 3.29%, and a life of five years.

In
connection with the issuance of the Series J preferred stock during 2004, the Company issued warrants to purchase 46,881 shares of common stock at an exercise price of $0.12
per share; concurrently, the Company issued warrants to purchase 30,173 shares of common stock at an exercise price of $0.12 per share in connection with the exchange of Series I preferred
stock for Series J preferred stock. The warrants expire five years from issuance date. The warrants were recorded at their relative fair value of $108 as a reduction to the carrying value of
the Series J preferred stock and a corresponding increase to additional paid-in capital. The fair value of the warrants was estimated on the date of grant using the Black-Scholes
option-pricing model with the following assumptions: no dividend yield, 100% volatility, risk-free interest rate range of 3.12%3.29%, and a life of five years.

In
connection with signing a lease agreement in 2004, the Company issued the landlord warrants to purchase 4,086 shares of common stock at an exercise price of $3.30 per share. The
warrants expire ten years from the lease term commencement date. The fair value of the warrants was immaterial.

In
conjunction with the issuance of Series 04 preferred stock in 2004 and the exchange of the shares of Series J preferred stock, 155,041 warrants to purchase common stock
were cancelled resulting in a decrease of additional paid-in capital of $219.

At
December 31, 2007, there were 29,476, 65,257, and 4,086 warrants outstanding with exercise prices of $0.12, $13.21, and $3.30 per share, respectively. During the year ended
December 31, 2007, 782,771 and 760,547 of the outstanding $0.12 and $13.21 warrants, respectively, were exercised.

12. Common Stock

Common Stock Issuances

On September 20, 2006, a 0.8173-for-1 reverse stock split was approved by the Board of Directors and became effective on
November 3, 2006. All information in these consolidated financial statements has been retroactively adjusted to reflect such reverse stock split.

During
November 2006, the Company completed its initial public offering of 7,820,000 shares of common stock at an initial public offering price of $14.00 per share. Net proceeds were
$99,327 after deducting underwriting discounts, commissions and other offering expenses. Concurrent with this offering, ADM purchased 535,714 shares at an initial offering price of $14.00 per share,
and the Company realized additional net proceeds of $7,500. The Company's redeemable convertible preferred stock was converted on a one-to-one basis into 9,992,041 shares of
common stock upon the closing of the initial public offering.

F-22

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

13. Stock-Based Compensation

In 1995, the Company adopted a stock plan (the "1995 Plan"). The 1995 Plan provided for the granting of incentive stock options, nonqualified stock options, stock
awards, and opportunities to make direct purchases of stock, to employees, officers, directors and consultants of the Company. In June 2005, the 1995 Plan was terminated, and the Company adopted a new
plan (the "2005 Plan"). No further grants or awards have been, or may be, made under the 1995 Plan. The 2005 Plan provided for the granting of incentive stock options, nonqualified stock options,
stock grants, and stock-based awards to employees, officers, directors, and consultants of the Company. The number of shares of common stock authorized for issuance under the 2005 Plan was 1,838,925
shares plus the amount of shares, if any, that were subject to options under the 1995 Stock Plan at June 2, 2005, but which subsequently become unissued upon the cancellation, surrender, or
termination of such options. In November 2006, the 2005 Plan was terminated, and the Company adopted a new plan (the "2006 Plan" and, together with the 1995 Plan and the 2005 Plan, referred to as the
"Plans"). The 2006 Plan provides for the granting of incentive stock options, non-qualified stock options, stock appreciation rights, deferred stock awards, restricted stock awards,
unrestricted stock awards, cash-based awards, and
dividend equivalent rights. No further grants or awards have been, or may be, made under the 2005 Plan. Options that are outstanding under the 1995 Plan and 2005 Plan continue to be governed by the
1995 Plan and 2005 Plan, respectively. The 2006 Plan states that not more than 10,000,000 shares shall be issued in the form of Incentive Stock Options under the Plan.

Options
granted under the Plans generally vest ratably over four years from the date of hire, or date of commencement of services with the Company for nonemployees, and generally expire
ten years from the date of issuance.

F-23

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

13. Stock-Based Compensation (Continued)

A
summary of the activity related to the shares of common stock covered by outstanding options follows:

|                                                 |  | Number of
Shares |   | Weighted Average
Exercise Price |       | Weighted Average
Remaining
Contractual Term
(in years) |      | Aggregate
Intrinsic value
|------------------------------------------------ |  | ---------------- | - | ------------------------------- | ----- | ------------------------------------------------------ | ---- | -------------------------
|Balance at December 31, 2004                     |  | 762,635          |   | $                               | 3.62  |                                                        |      |                          
|Granted                                          |  | 1,283,641        |   |                                 | 1.70  |                                                        |      |                          
|Exercised                                        |  | (4,183           | ) |                                 | 2.78  |                                                        |      |                          
|Cancelled                                        |  | (5,111           | ) |                                 | 2.05  |                                                        |      |                          
|                                                 |  |                  |   |                                 |       |                                                        |      |                          
|Balance at December 31, 2005                     |  | 2,036,982        |   |                                 | 2.42  |                                                        |      |                          
|                                                 |  |                  |   |                                 |       |                                                        |      |                          
|Granted                                          |  | 824,147          |   |                                 | 10.17 |                                                        |      |                          
|Exercised                                        |  | (40,865          | ) |                                 | 2.23  |                                                        |      |                          
|Cancelled                                        |  | (103,020         | ) |                                 | 7.06  |                                                        |      |                          
|                                                 |  |                  |   |                                 |       |                                                        |      |                          
|Balance at December 31, 2006                     |  | 2,717,244        |   |                                 | 4.60  |                                                        |      |                          
|                                                 |  |                  |   |                                 |       |                                                        |      |                          
|Granted                                          |  | 605,963          |   |                                 | 22.57 |                                                        |      |                          
|Exercised                                        |  | (1,023,953       | ) |                                 | 2.44  |                                                        |      |                          
|Cancelled                                        |  | (147,470         | ) |                                 | 4.37  |                                                        |      |                          
|                                                 |  |                  |   |                                 |       |                                                        |      |                          
|Balance at December 31, 2007                     |  | 2,151,784        |   |                                 | 10.70 |                                                        | 8.13 |                          
|                                                 |  |                  |   |                                 |       |                                                        |      |                          
|Vested and expected to vest at December 31, 2007 |  | 2,067,793        |   |                                 | 10.50 |                                                        | 8.10 |                          
|Exercisable at December 31, 2007                 |  | 1,049,579        |   |                                 | 7.04  |                                                        | 7.47 |                          

The
weighted average grant date fair value per share of options granted during fiscal years 2007, 2006, and 2005 was $14.08, $8.76, and $0.33, respectively. The total intrinsic value of
options exercised was $20,238 and $683 for the years ended December 31, 2007 and 2006 respectively.

A
summary of information about the shares of common stock covered by outstanding and exercisable options under the option plans at December 31, 2007 follows:

|              |  | Stock Options Outstanding |  | Stock Options Exercisable
|------------- |  | ------------------------- |  | -------------------------
|
|$  1.651.84  |  | 644,665                   |  | 7.48                     
|3.303.36     |  | 271,588                   |  | 5.36                     
|5.148.81     |  | 183,940                   |  | 8.46                     
|14.0016.83   |  | 483,654                   |  | 8.88                     
|18.6722.42   |  | 201,687                   |  | 9.60                     
|23.9924.97   |  | 366,250                   |  | 9.38                     
|              |  |                           |  |                          
|$  1.6524.97 |  | 2,151,784                 |  | 8.13                     
|              |  |                           |  |                          

F-24

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

13. Stock-Based Compensation (Continued)

In December 2005, 324,658 options were granted to an officer of the Company, of which 125,863 contained performance based vesting conditions. The 125,863 options
were a variable award and were subject to remeasurement which could have resulted in the recording of compensation expense in the future, depending on the probability of achieving certain performance
conditions. During the twelve months ended December 31, 2006, 41,954 of the 125,863 variable options granted to the officer of the Company during 2005 were cancelled due to the term expiration;
41,955 of these variable options were deemed to have met the performance conditions in the second quarter of 2006; 41,954 of these variable options were deemed to have met the performance conditions
in the fourth quarter of 2006; and as a result $635 of compensation expense was recorded during the year ended December 31, 2006.
Compensation expense of $36 was recorded during the year ended December 31, 2007 as the officer continued to complete the remaining service conditions related to these options. The remaining
$176 was not recorded as the officer's employment terminated.

Expense Information for Employee Stock Option Awards

The effect of SFAS No. 123(R) for the years ended December 31, 2007 and 2006 was stock compensation expense of $4,559 and $3,505 respectively, which
had an impact of $0.18 and $0.34 on basic and diluted net loss per share for the years ended December 31, 2007 and 2006. For the year ended December 31, 2005, the Company applied the
intrinsic value method of accounting for stock options as prescribed by APB 25. Had compensation expense been determined based on the fair value of the options at the grant date consistent with
the provisions of SFAS No. 123, the Company's net loss for the year ended December 31, 2005 would have increased to the pro forma amounts below:

|                                                                  |                                                                                                                  | Year Ended
December 31, 2005 |          
|----------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------- | ---------------------------- | ---------
|Net loss, as reported                                             |                                                                                                                  | $                            | (7,625   
|                                                                  | Add: Stock-based employee compensation expense included in reported net loss, net of related tax effects         |                              |          
|                                                                  | Deduct: Stock-based employee compensation expense determined under fair value method, net of related tax effects |                              |          
|                                                                  |                                                                                                                  |                              |          
|Pro forma net loss                                                |                                                                                                                  | $                            | (7,731   
|                                                                  |                                                                                                                  |                              |          
|Reported basic and diluted net loss per share                     |                                                                                                                  | $                            | (2.56    
|Pro forma basic and diluted net loss per share                    |                                                                                                                  | $                            | (2.60    
|Number of shares used in basic and diluted per share calculations |                                                                                                                  |                              | 2,975,116

Pursuant
to the requirements of SFAS No. 123, for the year ended December 31, 2005 the Company estimated the fair value of its stock options by applying the minimum value
method, which does not consider expected volatility of the underlying stock, using the following assumptions, and for the years ended December 31, 2007 and 2006, the Company determined the fair
value of stock options

F-25

---



METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

13. Stock-Based Compensation (Continued)

using
the Black-Scholes option pricing model with the following assumptions for option grants, respectively:

|                                |  | Year Ended December 31,
|------------------------------- |  | -----------------------
|
|Expected dividend yield         |  |                       
|Risk-free rate                  |  | 3.51%4.82%            
|Expected option term (in years) |  | 6.1                    
|Volatility                      |  | 59%                    

For
the year ended December 31, 2007, expected volatility is based on review of historical volatilities for similar public companies as adjusted to anticipate increased expected
volatility associated with a limited trading history. Management believes that the historical volatility of the Company's stock price does not best represent the expected volatility of the stock
price. Management intends to continue to consistently use the same group of publicly traded peer companies to determine volatility in the future until such time that sufficient information regarding
the volatility of our share price becomes available unless the selected companies become unsuitable for this purpose.

The
risk-free interest rate used for each grant is equal to the U.S. Treasury yield curve in effect at the time of grant for instruments with a term similar to the expected
life of the related option.

For
the year ended December 31, 2007, the expected term of the options granted was determined using the "simplified" method for "plain vanilla" options as permitted by Staff
Accounting Bulletin No. 107. For stock options that are not considered "plain vanilla" and, as such, do not qualify for the simplified method, for example stock options with an exercise price
below the related fair value of common stock on the date of grant, the Company's estimate of expected term was based upon review of the expected terms of publicly traded peer companies with stock
options that have similar characteristics.

The
stock price volatility and expected terms utilized in the calculation involve management's best estimates at that time, both of which impact the fair value of the option calculated
under the Black-Scholes methodology and, ultimately, the expense that will be recognized over the life of the option. SFAS 123(R) also requires that the Company recognize compensation expense
for only the portion of options that are expected to vest. Therefore, the Company has estimated expected forfeitures of stock options for the grants valued. In developing a forfeiture rate estimate,
the Company considered its historical experience, its growing employee base, actual forfeitures for the year, and forfeiture rates used by peer companies. The Company will continue to evaluate its
forfeiture rate as compared to the actual number of forfeitures in future periods to determine if adjustments to compensation expense may be required.

Expense Information for Non-employee Stock Option Awards

During the years ended December 2007, 2006, and 2005, the Company granted stock options to purchase 15,000, 51,080, and 59,558 shares of common stock,
respectively, to nonemployees. The compensation expense related to these options is to be recognized over a period of four years. The 2007, 2006 and 2005 grants vest quarterly and such vesting is
contingent upon future services provided by the consultants to the Company. Relating to these options, the Company recorded stock based

F-26

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METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

13. Stock-Based Compensation (Continued)

compensation
expense of $505, $996, and $27 during the years ended December 2007, 2006 and 2005, respectively. Options remaining unvested for nonemployees are subject to remeasurement each reporting
period prior to vesting in full. Since the fair market value of the options issued to nonemployees is subject to change in the future, the compensation expense recognized in each year may not be
indicative of future compensation charges. The Company's policy is to issue new shares upon the exercise of stock options.

The
fair value of each option granted to non-employees was estimated using the Black-Scholes option pricing model with the following assumptions:

|                        |  | Year       
|----------------------- |  | -----------
|
|Dividend yield          |  |           
|Volatility              |  | 59%        
|Risk-free interest rate |  | 4.04%5.03%
|Option term             |  | 10 years   

14. Income Taxes

There is no provision for income taxes because the Company has incurred operating losses since inception. The reported amount of income tax expense for the years
differs from the amount that would result from applying domestic federal statutory tax rates to pretax losses primarily because of
changes in valuation allowance. Significant components of the Company's net deferred tax asset at December 31, 2007, 2006 and 2005 are as follows:

|                                                    |                        | Year |        
|--------------------------------------------------- | ---------------------- | ---- | -------
|
|Net operating loss carryforward                     |                        | $    | 12,924 
|Capitalization of research and development expenses |                        |      | 8,224  
|Credit carryforwards                                |                        |      | 3,260  
|Other temporary differences                         |                        |      | 14,758 
|Total deferred tax assets                           |                        |      | 39,166 
|Valuation allowance                                 |                        |      | (39,166
|                                                    |                        |      |        
|                                                    | Net deferred tax asset |      | $      
|                                                    |                        |      |        

In
July, 2006 the FASB issued Financial Accounting Standards Interpretation No. 48,Accounting for Uncertainty in Income Taxes("FIN 48"). FIN 48 clarifies the accounting for uncertainty in income taxes recognized in an enterprise's financial statements in accordance with Statement of Accounting Standards
No. 109,Accounting for Income Taxes. FIN 48 prescribes a threshold for the financial statement recognition and measurement of a tax
position taken or expected to be taken in a tax return.
FIN 48 also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosures and transitions. The Company adopted FIN 48 on
January 1, 2007 with no effect on financial position. In addition, the Company has no amounts recorded for any unrecognized tax benefits as of January 1, 2007 or December 31,
2007.

F-27

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METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

14. Income Taxes (Continued)

The
tax years 2004 through 2007 remain open to examination by major taxing jurisdictions to which the Company is subject, which are primarily in the US.

The
Company's policy is to record estimated interest and penalties related to uncertain tax positions in income tax expense. As of January 1, 2007, and December 31, 2007,
the Company had no accrued interest or penalties recorded related to uncertain tax positions.

At
December 31, 2007 the Company had net operating loss carryforwards for federal and state income tax purposes of $33,620 and $23,822, respectively. The Company's federal and
state net operating loss carryforwards will begin to expire in 2008 and 2007, respectively. The Company also had available research and development credits for federal and state income tax purposes of
$2,082 and $1,662 respectively. The federal and state research and development credits will begin to expire in 2012 and 2015, respectively. As of December 31, 2007 the Company also had
available investment tax credits for state income tax purposes of $124 which began to expire in 2007. Management of the Company has evaluated the positive and negative evidence bearing upon the
realizability of its deferred tax assets, which are comprised principally of net operating loss carryforwards and research and development credits. Under the applicable accounting standards,
management has considered the Company's history of losses and concluded that it is more likely than not that the Company will not recognize the benefits of federal and state deferred tax assets.
Accordingly, a full valuation allowance has been established against the deferred tax assets.

Utilization
of Net Operating Loss, or NOL, and Research & Development, or R&D, credit carryforwards may be subject to a substantial annual limitation due to ownership change
limitations that have occurred previously or that could occur in the future as provided by Section 382 and 383 of the Internal Revenue Code of 1986, as well as similar state provisions. These
ownership changes may limit the amount of NOL and R&D credit carryforwards that can be utilized annually to offset future taxable income and tax, respectively. In general, an ownership change, as
defined by Section 382, results from transactions increasing the ownership of certain shareholders or public groups in the stock of a corporation by more than 50 percentage points over a
three year period. Since the Company's formation, the Company has raised capital through the issuance of capital stock which, combined with the purchasing shareholders' subsequent disposition of those
shares, may have resulted in a change of control, as defined by Section 382, or could result in a change of control in the future upon subsequent disposition. The Company has not currently
completed a study to assess whether there have been multiple changes of control since the Company's formation due to the significant complexity and cost associated with such study. If the Company has
experienced a change in control at any time since the
Company's formation, utilization of the Company's NOL or R&D credit carryforwards would be subject to an annual limitation under Section 382 and 383. Any limitation may result in expiration of
a portion of the NOL or R&D credit carryforwards before utilization. Until a study is completed and any limitation known, no amounts are being presented as uncertain tax positions under FIN 48.

15. Employee Benefits

The Company maintains a 401(k) savings plan in which substantially all of its permanent employees are eligible to participate. Participants may contribute 100% of
their annual compensation to the plan, subject to eligibility requirements and IRS limits. In 2007 the Company began matching, in common stock, up to 4.5% of a participant's total compensation. The
Company issued 4,866 shares of common stock in 2007 pursuant to this plan. In addition $155 was accrued for 401(k) matching at

F-28

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METABOLIX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Continued)

15. Employee Benefits (Continued)

December 31,
2007. In 2006 and 2005 the Company did not make any contributions. Company contributions are fully vested upon grant.

16. Summary of Quarterly Financial Data (unaudited)

The following tables summarize the unaudited quarterly financial data for the last two fiscal years.

|                                     |  | 2007 Quarter Ended |       
|------------------------------------ |  | ------------------ | ------
|
|Total revenues                       |  | $                  | 429   
|Loss from operations                 |  |                    | (6,226
|Net Loss                             |  |                    | (4,688
|Basic and diluted net loss per share |  | $                  | (0.22 

|
|

|                                     |  | 2006 Quarter Ended |      
|------------------------------------ |  | ------------------ | -----
|
|Total revenues                       |  | $                  | 3,082
|Loss from operations                 |  |                    | (457 
|Net Loss                             |  |                    | (325 
|Basic and diluted net loss per share |  | $                  | (0.11

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F-29

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Exhibit Index

|Exhibit
Number |  | Description                                                                                                                                        
|-------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------
|3.1(1)         |  | Amended and Restated Certificate of Incorporation of the Registrant                                                                                
|3.3(1)         |  | Amended and Restated By-laws of the Registrant                                                                                                     
|4.1(1)         |  | Specimen Stock Certificate for shares of the Registrant's Common Stock                                                                             
|4.2(1)         |  | Form of Common Stock Purchase Warrant issued in each of the Series I Financing, the Series J Financing and the Series 04 financing                 
|10.1(1)       |  | 1995 Stock Plan                                                                                                                                    
|10.1.1(1)     |  | 1995 Stock Plan, Form of Incentive Stock Option Agreement                                                                                          
|10.1.2(1)     |  | 1995 Stock Plan, Form of Non-Qualified Stock Option Agreement                                                                                      
|10.2(1)       |  | 2005 Stock Plan                                                                                                                                    
|10.2.1(1)     |  | 2005 Stock Plan, Form of Incentive Stock Option Agreement                                                                                          
|10.2.2(1)     |  | 2005 Stock Plan, Form of Non-Qualified Stock Option Agreement                                                                                      
|10.3(1)       |  | 2006 Stock Option and Incentive Plan                                                                                                               
|10.3.1(1)     |  | 2006 Stock Option and Incentive Plan, Form of Incentive Stock Option Agreement                                                                     
|10.3.2(1)     |  | 2006 Stock Option and Incentive Plan, Form of Non-Qualified Stock Option Agreement                                                                 
|10.3.3(1)     |  | 2006 Stock Option and Incentive Plan, Form of Director Non-Qualified Stock Option Agreement                                                        
|10.4#(1)       |  | License Agreement between the Registrant and Massachusetts Institute of Technology dated July 15, 1993, as amended                                 
|10.5#(1)       |  | Commercial Alliance Agreement by and among the Registrant, ADM/Metabolix Sales Company, LLC and ADM Polymer Corporation dated July 14, 2006        
|10.6#(1)       |  | Operating Agreement of ADM/Metabolix Sales Company, LLC by and between the Registrant and ADM Polymer Corporation dated July 14, 2006              
|10.7(1)        |  | Letter Agreement by and between the Registrant and Archer Daniels Midland Company dated November 3, 2004                                           
|10.8#(1)       |  | Technology Alliance and Option Agreement by and between the Registrant and ADM Polymer Corporation dated as of November 4, 2004                    
|10.9#(1)       |  | First Amendment to Technology Alliance and Option Agreement by and between the Registrant and ADM Polymer Corporation dated as of September 8, 2005
|10.10*        |  | Employment Agreement between the Registrant and Richard P. Eno dated February 20, 2008                                                             
|10.11(1)      |  | Employment Agreement between the Registrant and Oliver P. Peoples dated July 20, 2006                                                              
|10.12(1)      |  | Amended and Restated Employment Agreement between the Registrant and Johan van Walsem dated September 22, 2006                                     
|10.13(1)      |  | Amended and Restated Employment Agreement between the Registrant and Robert C. Findlen dated September 22, 2006                                    
|10.14(1)      |  | Employment Agreement between the Registrant and Brian F. Igoe dated August 29, 2006                                                                

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|10.15(1) |  | Form of Employee Noncompetition, Nondisclosure and Inventions Agreement with Oliver P. Peoples and Johan van Walsem                                                     
|--------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|10.16(1) |  | Form of Noncompetition, Nondisclosure and Inventions Agreement with Robert C. Findlen and Brian F. Igoe                                                                 
|10.17(4) |  | Employment Agreement between the Registrant and Jay Kouba dated June 7, 2007                                                                                            
|10.18(5) |  | Separation Agreement between the Registrant and James J. Barber dated May 3, 2007                                                                                       
|10.19(1) |  | Form of Indemnification Agreement between the Registrant and its Directors and Officers                                                                                 
|10.20(1)  |  | Lease Agreement between the Registrant and 21 Erie Realty Trust dated as of December 29, 2003 for the premises located at 21 Erie Street, Cambridge, Massachusetts 02139
|10.21(3)  |  | Lease between Fortune Wakefield, LLC ("Landlord") and Metabolix, Inc. dated March 30, 2007                                                                              
|10.22(1)  |  | Fifth Amended and Restated Stockholders Agreement by and among the Registrant and certain of its stockholders dated January 19, 2006                                    
|10.23(1)  |  | Amendment No. 1 to Fifth Amended and Restated Stockholders Agreement by and among the Registrant and certain of its stockholders dated July 12, 2006                    
|10.24(1)  |  | Stock Purchase Agreement between the Registrant and Archer Daniels Midland Company dated July 12, 2006                                                                  
|10.25#(1) |  | License Agreement between the Registrant and Tepha, Inc. dated as of October 1, 1999                                                                                    
|10.26#(1) |  | License Agreement between the Registrant and Tepha, Inc. dated as of September 9, 2003                                                                                  
|10.27(6)* |  | Exclusive License Agreement between the Registrant and Abbott Laboratories dated November 12, 2007                                                                      
|10.28*   |  | Form of Employee Noncompetition, Confidentiality and Inventions Agreement with Richard P. Eno                                                                           
|21.1(2)   |  | Subsidiaries of the Registrant                                                                                                                                          
|23.1*     |  | Consent of PricewaterhouseCoopers LLP, an independent registered public accounting firm                                                                                 
|24.1      |  | Power of Attorney (incorporated by reference to the signature page of this Annual Report on Form 10-K)                                                                  
|31.1*     |  | Certification Pursuant to Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934                                                                       
|32.1*     |  | Certification Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002                                                  

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