UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q/A

(Mark One)

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

For the quarterly period ended March 31, 2007

or

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

For the transition period from                      to

Commission file number 1-33403

Sipex Corporation

Delaware		04-6135748
(State or other jurisdiction of incorporation or organization)		(IRS Employer Identification No.)

233 South Hillview Drive,
Milpitas, California 95035
(Address of principal executive offices, including zip code)

(408) 934-7500
(Registrant’s telephone number, including area code)

     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 þ No o

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

Large accelerated filer o      Accelerated filer o      Non-accelerated filer þ

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

     Number of shares outstanding of the registrant’s common stock, $0.01 par value, as of June 25, 2007 was 18,946,694.

 

 

SIPEX CORPORATION
FORM 10-Q/A
(Amendment No. 1)
THREE MONTHS ENDED MARCH 31, 2007

INDEX

Item
Number		Page
PART I: FINANCIAL INFORMATION
Item 1. Unaudited Financial Statements
Condensed Consolidated Balance Sheets at March 31, 2007 and December 30, 2006			4
Condensed Consolidated Statements of Operations for the three months ended March 31, 2007 and April 1, 2006			5
Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2007 and April 1, 2006			6
Notes to Condensed Consolidated Financial Statements			7
SIGNATURE			25
EXHIBIT 31.3
EXHIBIT 31.4
EXHIBIT 32.3
EXHIBIT 32.4

EXPLANATORY NOTE

     We are filing this Amendment (“Amendment No. 1”) to our Form 10-Q for the quarter ended March 31, 2007, as originally filed with the Securities and Exchange Commission (the “SEC”) on May 15, 2007 (the “Original Filing”) to remove the reference to the appraisal in Item 1. Unaudited Financial Statements as we did not intend to expertise the appraisal firm that assisted us and we are fully responsible for the determination of fair value of our corporate headquarters facility in the impairment analysis. No other changes have been made to the
Form 10-Q for the quarter ended March 31, 2007.

     As a result of this amendment, we are also filing the certifications pursuant to Section 302 and Section 906 of the Sarbanes-Oxley Act of 2002 as exhibits to this Amendment No. 1.

     Except as otherwise expressly stated for the item amended in this Amendment No. 1, this Amendment No. 1 continues to speak as of the date of the Original Filing and we have not updated the disclosure contained herein to reflect events that have occurred since the date of the Original Filing. Accordingly, this Amendment No. 1 should be read in conjunction with our Original Filing and our other filings made with the SEC subsequent to the date of the Original Filing.

PART I: FINANCIAL INFORMATION

Item 1: Financial Statements

SIPEX CORPORATION

		March 31, 2007				December 30, 2006
ASSETS
Current assets:
Cash and cash equivalents		$	8,135			$	13,041
Restricted cash			350				350
Short-term investment securities			399				2,388
Accounts receivable, less allowances of $609 and $551, respectively			4,432				6,222
Accounts receivable, related party, less allowances of $428 and $306, respectively			2,865				949
Inventories			15,790				15,586
Prepaid expenses and other current assets			1,383				1,641
Total current assets			33,354				40,177
Property, plant, and equipment, net			19,686				19,113
Restricted cash — noncurrent			57				57
Other assets			204				202
Total assets		$	53,301			$	59,549
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Current liabilities:
Current portion of long-term bank borrowing		$	667			$	667
Current portion of lease financing obligation			205				191
Accounts payable			8,518				10,331
Accrued expenses			7,509				7,185
Accrued restructuring costs			1,346				1,728
Deferred income, related party			5,689				5,543
Deferred income, other			2,459				2,555
Total current liabilities			26,393				28,200
Long-term bank borrowing			1,167				1,333
Long-term lease financing obligation			12,096				12,152
Long-term accrued restructuring costs			—				139
Convertible senior notes			26,025				25,826
Other long-term liabilities			23				24
Total liabilities			65,704				67,674
Commitment and contingencies (Note 15)
Stockholders’ deficit:
Preferred stock, $0.01 par value, 1,000 shares authorized; no shares issued or outstanding			—				—
Common stock, $0.01 par value, 60,000 shares authorized; 18,687 and 18,390 shares issued and outstanding at March 31, 2007 and December 30, 2006, respectively			187				184
Additional paid-in capital			236,806				234,785
Accumulated deficit			(249,377	)			(243,075	)
Accumulated other comprehensive loss			(19	)			(19	)
Total stockholders’ deficit			(12,403	)			(8,125	)
Total liabilities and stockholders’ deficit		$	53,301			$	59,549

See accompanying notes to condensed consolidated financial statements

SIPEX CORPORATION

		For the Three Months Ended
		March 31, 2007				April 1, 2006
Net sales		$	8,758			$	9,303
Net sales, related party			8,101				8,551
Total net sales			16,859				17,854
Cost of sales			7,073				10,178
Cost of sales, related party			5,347				7,871
Total cost of sales			12,420				18,049
Gross profit (loss)			4,439				(195	)
Operating expenses:
Research and development			3,686				5,496
Marketing and selling			3,293				3,656
General and administrative			2,968				4,021
Restructuring and other			63				307
Total operating expenses			10,010				13,480
Loss from operations			(5,571	)			(13,675	)
Other income (expense):
Interest income			131				49
Interest expense			(834	)			(183	)
Other, net			1				42
Total other expense, net			(702	)			(92	)
Loss before income tax expense			(6,273	)			(13,767	)
Income tax expense			17				32
Net loss		$	(6,290	)		$	(13,799	)
Net loss per common share — basic and diluted		$	(0.34	)		$	(0.78	)
Weighted average common shares outstanding — basic and diluted			18,547				17,775

See accompanying notes to condensed consolidated financial statements

SIPEX CORPORATION

		For the Three Months Ended
		March 31, 2007				April 1, 2006
Operating activities:
Net loss		$	(6,290	)		$	(13,799	)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense			904				933
Depreciation and amortization			518				7,499
Provision for inventories			4				123
Reversal of provision for purchase commitments on excess inventories			(44	)			—
Provision for restructuring charges			3				307
Loss on disposal of fixed assets			—				9
Amortization of discount and issuance costs on convertible notes			199				—
Provision for uncollectible receivables and sales returns and allowances			282				153
Changes in assets and liabilities:
Accounts receivable			(408	)			(1,529	)
Inventories			(156	)			21
Prepaid expenses and other current assets			350				(304	)
Other assets			(2	)			(7	)
Accounts payable			(2,015	)			2,492
Accrued expenses			356				(934	)
Accrued restructuring costs			(522	)			(100	)
Deferred income			50				437
Other long-term liabilities			(1	)			(2	)
Net cash used in operating activities			(6,772	)			(4,701	)
Investing activities:
Proceeds from maturity of short-term investment securities			2,383				—
Purchase of short-term investment securities			(394	)			—
Purchase of property, plant, and equipment			(891	)			(122	)
Net cash provided by (used in) investing activities			1,098				(122	)
Financing activities:
Proceeds from issuance of common stock under employee stock option plans			976				—
Proceeds from borrowing - related party			—				7,000
Repayment of borrowing - related party			—				(7,000	)
Repayment of short-term bank borrowing			—				(3,000	)
Repayment of long-term bank borrowing			(166	)			—
Net proceeds from lease financing obligation			—				12,578
Repayment of lease financing obligation			(42	)			(113	)
Net cash provided by financing activities			768				9,465
Increase (decrease) in cash and cash equivalents			(4,906	)			4,642
Cash and cash equivalents at beginning of period			13,041				1,969
Cash and cash equivalents at end of period		$	8,135			$	6,611
Supplemental cash flow information:
Cash paid during the period for:
Income taxes		$	1			$	2
Interest		$	144			$	173
Supplemental disclosure of non-cash investing and financing activities:
Purchase of property, plant and equipment not paid at end of period		$	371			$	152
Receivable from exercise of stock options		$	92			$	—

See accompanying notes to condensed consolidated financial statements

SIPEX CORPORATION

Note 1. Description of Business and Basis of Presentation

Description of Business

     Based in Milpitas, California, Sipex Corporation (“Sipex” or “Company”) was incorporated in May 1965 under the laws of the State of Massachusetts. The state of incorporation was changed from Massachusetts to Delaware in October 2003. Sipex designs, manufactures and markets high performance, analog integrated circuits or “ICs” that primarily are used by original equipment manufacturers, or OEMs, operating in the computing, consumer electronics, communications and networking infrastructure markets. Some of the end product applications that contain the Company’s ICs are cellular phones, base stations, computers, DVD players, and digital cameras. The Company’s products are sold either directly or through an international network of manufacturers’ representatives and distributors. The Company is a global company with operations in Asia, Europe and North America.

     In an effort to achieve significant cost savings, in the third quarter of 2005, the Company decided to close down the Milpitas wafer fabrication facility and transfer its IC manufacturing processes from there to a wafer fabrication facility operated by Hangzhou Silan Integrated Circuit Co., Ltd. (“Silan”), in Hangzhou, China and a wafer fabrication facility operated by Episil Technologies, Inc. (“Episil”), in Taiwan. Definitive agreements regarding this transfer were entered into in February 2006, and the closure of the Milpitas fabrication facility was completed in early October 2006. In December 2006, the Company announced a workforce reduction plan that was implemented in response to its transitioning to a fabless semiconductor company, de-emphasizing optical products, reducing dependency on commodity products and with the goal of improving its cost structure.

     On May 7, 2007, Sipex entered into a definitive merger agreement with Exar Corporation to combine the two companies. Under the terms of the agreement, which was approved by the Boards of Directors of both companies, Sipex stockholders will receive 0.6679 of a share of Exar for each share of Sipex. Exar stockholders will own approximately 67.6% and Sipex stockholders will own approximately 32.4% of Exar after completion of the transaction, which assumes conversion to common stock of Sipex’s outstanding convertible senior notes and related warrants.

     Fiscal Year

     The Company’s fiscal year is the 52 or 53 weeks ending on the last Saturday in December. Fiscal 2007 and fiscal 2006 are 52-week fiscal years. The first quarter of fiscal year 2007 and 2006 included 91 days from December 31, 2006 to March 31, 2007 and January 1, 2006 to April 1, 2006, respectively.

     The Basis of Presentation and Significant Accounting Policies

     The accompanying interim unaudited condensed consolidated financial statements have been prepared by Sipex without audit and reflect all adjustments, consisting only of normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of the Company’s financial position, results of operations and cash flows for the interim periods presented. The statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“generally accepted accounting principles”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10-01 of Regulation S-X. Accordingly, they do not include all information and footnotes required by generally accepted accounting principles for annual consolidated financial statements.

     The condensed financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant inter-company accounts and transactions have been eliminated in consolidation.

     These unaudited interim financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 30, 2006. The results of operations for the three months ended March 31, 2007 are not necessarily indicative of the operating results to be expected for the full fiscal year or future operating periods.

     Reverse Stock Split

     On January 30, 2007, Sipex’s stockholders at a special meeting of stockholders approved a 1-for-2 reverse stock split. The reverse split became effective at 1:31 p.m. Pacific Standard Time on February 23, 2007. The par value of the common stock was not affected by the reverse stock split and remains at $0.01 per share. Consequently, the aggregate par value of the issued common stock was reduced by reclassifying the par value amount of the eliminated shares of common stock to additional paid-in capital in the Company’s condensed balance sheets. The Company has paid cash in lieu of any fractional shares to which a holder of common stock would otherwise be entitled as a result of the reverse stock split. The number of authorized shares of common stock remains unchanged. All shares and per share amounts, including all common stock equivalents (stock options, warrants and convertible notes) have been adjusted in the condensed consolidated financial statements and in the notes to condensed consolidated financial statements for all periods presented to reflect the reverse stock split.

     Revenue Recognition

     The Company recognizes revenue in accordance with SEC Staff Accounting Bulletin (“SAB”) 104, “Revenue Recognition.” SAB 104 requires that four basic criteria must be met before revenue can be recognized: (1) persuasive evidence of an arrangement exists; (2) delivery has occurred or services rendered; (3) the fee is fixed or determinable; and (4) collectibility is reasonably assured.

     Prior to January 1, 2004, the Company entered into arrangements that were not within the original contractual distributor agreements in that the Company allowed return rights and other concessions beyond the levels provided in the distributor agreements. As a result, Company management concluded it is unable to reasonably estimate sales returns for arrangements with its distributor; accordingly, sales and related cost of sales on shipments to distributors are deferred until the resale to the end customer.

     Sales to Future Electronics Inc. (“Future”), a distributor and related party (See Note 5), are made under an agreement that provides protection against price reductions of Sipex’s products in Future’s inventory. In addition, Future has stock rotation rights. Pursuant to these stock rotation rights, Future is permitted on a quarterly basis to return for credit up to 5% of its total purchases during the most recent three-month period.

     Additionally, the Company is providing Future a quarterly scrap allowance credit against accounts receivable for up to 2% of the most recent three-month purchases when they provide the evidence of destruction of inventory of Sipex’s products up to this quarterly amount. As the price of products sold to Future is not fixed or determinable until resold by Future to the end customer, Sipex is using sell-through revenue recognition and deferring recognition of such sales and related cost of goods sold until the product is sold by Future to its customers.

     Under sell-through revenue accounting, accounts receivable are recognized and inventory is relieved upon shipment to the distributor as title to the inventory is transferred upon shipment, at which point the Company has a legally enforceable right to collection under normal terms. The associated sales and cost of sales are deferred by recording “deferred income” (gross profit margin on these sales) as shown on the face of the consolidated balance sheet. When the related product is sold by the Company’s distributors to their end customers, Sipex recognizes previously deferred income as sales and cost of sales.

     For non-distributor customers, the Company recognizes revenue when title to the product is transferred to the customers, which occurs upon shipment or delivery, depending upon the terms of the customer order, provided that persuasive evidence of a sales arrangement exists, the price is fixed and determinable, title has transferred, collection of the resulting receivables is reasonably assured, there are no customer acceptance requirements, and there are no remaining significant obligations. Provisions for returns and allowances for non-distributor customers are provided for at the time product sales are recognized. An allowance for sales returns and allowances for customers is recorded based on historical experience or specific identification of an event necessitating an allowance.

     From time to time, Sipex develops custom products for various customers under engineering service contracts culminating in delivery of known functional development samples. The Company recognizes revenue under these agreements upon delivery of known functional development samples as delivery of such samples represents the culmination of utility of the contract to the customer and agreed-to milestones. Sipex recognizes the costs associated with these contracts as research and development expenses due to the uncertain nature of the development efforts until delivery of the known functional development samples. Certain of these engineering service contracts include payments in advance of delivery of known functional development samples. These payments are recorded in deferred income, other, until the time of delivery of the functional samples.

     Property, Plant and Equipment

     Property, plant and equipment are stated at cost. Depreciation is provided by using the straight-line method over their expected useful lives.

     In September 2005, the Company tested its Milpitas corporate headquarters facility for impairment given that Sipex believed that there was a significant decline in the market price of the facility and determined that the carrying amount might not be recoverable. The headquarters facility housed the wafer fabrication operations as well as the sales and marketing department, the research and development department and the corporate administration functions. The Milpitas corporate headquarters facility does not have identifiable cash flows that are largely independent of the cash flows of other assets and liabilities of the Company. Accordingly, the Milpitas corporate headquarters facility, which includes all assets located at the Milpitas facility except for the wafer fabrication asset grouping, is included in the asset grouping which includes all assets and liabilities of the Company. No impairment loss was recognized given the carrying value of all assets and liabilities of the Company was less than the fair value, determined based on the quoted market value of the Company.

     In November 2005, the Board of Directors approved the sale of the Company’s Milpitas corporate headquarters facility. As a result of this decision, the Company reduced the remaining estimated depreciable life for its headquarters building and related improvements from 25 years to approximately four months (See Note 12 regarding the sale and leaseback arrangement for Sipex’s headquarters facility), or through March 2006, the date the Company expected the sale leaseback of the Milpitas corporate headquarters facility would qualify as a sale. This change resulted in an increase in depreciation expense of $6.7 million (including $4.5 million included in cost of sales) recorded in the first quarter of 2006. For the first quarter of 2007, no such additional depreciation was recorded.

     In March 2006, the Company revised the remaining depreciable life of the Milpitas corporate headquarters facility when it was determined that the sale leaseback did not qualify as a sale transaction and was required to be accounted for as a financing transaction.

Note 2. Recent Accounting Pronouncements

     In February 2006, the FASB issued SFAS No. 155, “Accounting for Certain Hybrid Financial Instruments,” an amendment of FASB Statements No. 133 and 140. SFAS No. 155 will be effective for the Company beginning in the first quarter of 2007. The statement permits interests in hybrid financial instruments that contain an embedded derivative that would otherwise require bifurcation, to be accounted for as a single financial instrument at fair value, with changes in fair value recognized in earnings. This election is permitted on an instrument-by-instrument basis for all hybrid financial instruments held, obtained, or issued as of the adoption date. The adoption of SFAS No. 155 did not have a material impact on the Company’s financial statements.

     In July 2006, the FASB issued Interpretation No. 48, “Accounting for Uncertainty in Income Taxes” (“FIN 48”) as an interpretation of FASB Statement No. 109, “Accounting for Income Taxes” (“SFAS 109”). This Interpretation clarifies the accounting for uncertainty in income taxes recognized by prescribing a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. This Interpretation also provides guidance on de-recognition of tax benefits previously recognized and additional disclosures for unrecognized tax benefits, interest and penalties. The evaluation of a tax position in accordance with this Interpretation begins with a determination as to whether it is more likely than not that a tax position will be sustained upon examination based on the technical merits of the position. A tax position that meets the more-likely-than-not recognition threshold is then measured at the largest amount of benefit that is greater than 50 percent likely of being realized upon ultimate settlement for recognition in the financial statements. Sipex adopted FIN 48 in the first quarter of 2007, which resulted in no material impact on the Company’s financial statements (See Note 7).

     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. This Statement applies under other accounting pronouncements that

require or permit fair value measurements, the FASB having previously concluded in those accounting pronouncements that fair value is the relevant measurement attribute. Accordingly, this Statement does not require any new fair value measurements. SFAS No. 157 is effective for financial statements issued for fiscal years beginning after November 15, 2007, and interim periods within those fiscal years. This Statement is required to be adopted by the Company in the first quarter of its fiscal year 2008. The Company is currently assessing the impact of the adoption of this Statement.

     In December 2006, the FASB staff issued FSP EITF Issue No. 00-19-2, “Accounting for Registration Payment Arrangements” which specifies that the contingent obligation to make future payments or otherwise transfer consideration under a registration payment arrangement, whether issued as a separate agreement or included as a provision of a financial instrument or other agreement, should be separately recognized and measured in accordance with FASB Statement No. 5, Accounting for Contingencies. This FSP shall be effective immediately for registration payment arrangements and the financial instruments subject to those arrangements that are entered into or modified subsequent to the date of issuance of this FSP. For registration payment arrangements and financial instruments subject to those arrangements that were entered into prior to the issuance of this FSP, this guidance shall be effective for financial statements issued for fiscal years beginning after December 15, 2006, and interim periods within those fiscal years. The Company adopted this FSP in its first quarter of 2007. The adoption did not have a material impact on the Company’s financial statements (See Note 4).

     In February 2007, the FASB issued SFAS No. 159, “The Fair Value Option for Financial Assets and Financial Liabilities — Including an amendment of FASB Statement No. 115.” SFAS No. 159 permits companies to measure many financial instruments and certain other items at fair value at specified election dates. Unrealized gains and losses on these items will be reported in earnings at each subsequent reporting date. The fair value option may be applied instrument by instrument (with a few exceptions), is irrevocable and is applied only to entire instruments and not to portions of instruments. SFAS No. 159 is effective for fiscal years beginning after November 15, 2007. This Statement is required to be adopted by the Company in the first quarter of its fiscal year 2008. The Company is currently assessing the impact of the adoption of this Statement.

Note 3. Stock-Based Compensation

     Stock Based Compensation Plans

     The Company currently maintains five option plans. They are the 1997 Stock Option Plan, 1999 Stock Option Plan, 2000 Non-Qualified Stock Option Plan, 2002 Non-statutory Stock Option Plan and 2006 Equity Incentive Plan under which 0.6 million, 0.6 million, 0.3 million, 1.0 million and 0.8 million shares were reserved for issuance, respectively. The plans generally allow for options which vest ratably over five years from the date of grant for options granted before May 2002 and four years for options granted after April 2002. These options expire ten years from the date of grant. In October 2002, the Board of Directors voted to reduce the number of shares available for issuance under the 2000 Non-qualified Stock Option Plan to 335,995. Approximately 3,742,000 stock options were outstanding as of March 31, 2007 for all plans. As of March 31, 2007, approximately 645,000 stock options were available for grant under all plans.

     The Company also has an Employee Stock Purchase Plan (“ESPP”) under which eligible employees may purchase shares of the Company’s common stock through periodic payroll deductions of up to 10% of total compensation at the lesser of (i) 85% of the average market price of the common stock on the first business day of the six-month payment period and (ii) 85% of the average market price of the common stock on the last business day of the six-month payment period. The Company’s ESPP is considered compensatory under the provisions of SFAS 123R.

     Under SFAS No. 123R, stock-based compensation expenses for stock option grants are based on the fair value calculated from a stock option pricing model on the date of grant. The Company has utilized the Black-Scholes single option pricing model to determine the fair value for stock option grants. The fair value of stock option grants issued is recognized as compensation expense on a straight-line basis over the requisite service period, which is the vesting period of the grants. Compensation expense recognized is shown in the operating activities section of the consolidated statements of cash flows. In addition, SFAS No. 123R requires the cash flows resulting from the tax benefits from tax deductions in exercise of the compensation cost recognized (excess tax benefits) to be classified as financing cash flows.

     As part of the requirements of SFAS No. 123R, the Company is required to estimate potential forfeitures of stock grants and adjust compensation cost recorded accordingly. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures will be recognized in the period of change and will also impact the amount of stock compensation expenses to be recognized in future periods.

     Valuation Assumptions

     Valuation Method – The Company estimates the fair value of stock options granted by using the Black Scholes valuation model.

     Expected Term — The Company has elected to use the “Simplified Method” outlined in SAB 107 to determine the expected term of its stock option grants.

     Volatility — Volatility is based upon the Company’s historical stock price volatility. The Company considered historical volatility of a period generally commensurate with the expected or contractual term, as applicable, of the share option.

     Risk Free Interest Rate — The Company continues to use the risk-free rate based on the U.S. Treasury yield curve in effect at the time of grant for the expected term of the option to be valued.

     Dividend Yield — The Company does not currently intend to pay cash dividends. Therefore, the Company has assumed a dividend yield of zero.

     The fair value of the Company’s stock-based awards to employees was estimated using the following weighted-average assumptions for the grants made in the three months ended March 31, 2007 and April 1, 2006:

		Stock Option Plans								ESPP
		March 31, 2007				April 1, 2006				March 31, 2007				April 1, 2006
Expected life of options		6 years				6 years				6 months					N/A
Volatility			85	%			92	%			46	%			N/A
Risk-free interest rate			4.7	%			4.5	%			5.1	%			N/A
Dividend yield			—				—				—				N/A
Weighted average fair value options granted		$	6.88			$	3.40			$	2.76				N/A

     Stock-Based Compensation Expense

     The following table shows total employee and non-employee stock-based compensation expense recognized in the condensed consolidated statement of operations for the three months ended March 31, 2007 and April 1, 2006, pursuant to SFAS No. 123R (in thousands):

		March 31, 2007				April 1, 2006
Cost of sales		$	111			$	127
Research and development			231				338
Marketing and selling			258				190
General and administrative			304				278
Stock-based compensation expense before income tax effect			904				933
Less income tax effect			—				—
Stock-based compensation expense after income tax effect		$	904			$	933

     At March 31, 2007, there was approximately $219,000 of total compensation cost capitalized in inventory.

     At March 31, 2007, there was a total of $6.5 million unrecognized compensation cost, net of estimated forfeitures, related to non-vested stock option awards which is expected to be recognized over a weighted-average period of approximately 33 months.

     As a result of adopting SFAS No. 123R on January 1, 2006, the Company’s loss before income taxes and net loss for the three months ended March 31, 2007 and April 1, 2006 included approximately $904,000 and $891,000, respectively, of employee stock-based compensation expense.

Stock Options Activities

     The following is a summary of option activity for the Company’s stock option plans for the three months ended March 31, 2007 (in thousands, except per share amounts):

										Weighted
		Number				Weighted				Average				Aggregate
		of				Average				Remaining				Intrinsic
		Options				Exercise				Contractual				Value
		(in thousands)				Price				Term (in years)				(in thousands)
Outstanding at December 30, 2006			3,761			$	5.88				7.81			$	17,518
Granted			381			$	9.24
Exercised			(297	)		$	3.60
Forfeited or expired			(103	)		$	6.35
Outstanding at March 31, 2007			3,742			$	6.39				7.86			$	12,748
Vested and expected to vest at March 31, 2007			3,508			$	6.41				7.80			$	12,061
Exercisable at March 31, 2007			1,752			$	6.77				6.81			$	6,918

     The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the quoted price of the Company’s common stock that were in-the-money at March 31, 2007 and April 1, 2006. During the three months ended March 31, 2007, the aggregate intrinsic value of options exercised under the Company’s stock option plans was $1.7 million. For the three months ended April 1, 2006, there was no aggregate intrinsic value as no stock options were exercised during that period.

     There were no purchases of common stock made under the Company’s Employee Stock Purchase Plan in the first quarter of 2007 and 2006. As of March 31, 2007, approximately 122,000 shares were available for issuance under the Plan.

Note 4. Stockholder’s Deficit

     Net Loss per Share

     Basic net loss per share is based upon the weighted average number of common shares outstanding. Diluted net loss per share is based upon the weighted average number of common and common equivalent shares outstanding assuming dilution. Common equivalent shares, consisting of outstanding stock options, convertible debt and warrants, are included in the per share calculations where the effect of their inclusion would be dilutive. As the Company had a net loss for the three months ended March 31, 2007 and April 1, 2006, the weighted average number of common shares outstanding equals the weighted average number of common and common equivalent shares assuming dilution.

     A reconciliation of basic weighted average common shares with diluted weighted average shares is as follows (in thousands):

		March 31, 2007				April 1, 2006
Weighted average common shares outstanding – basic			18,547				17,775
Net effect of dilutive potential common shares outstanding based on the treasury stock method using the average market price			—				—
Weighted average common shares outstanding – diluted			18,547				17,775

     Antidilutive potential common shares excluded from the weighted average common shares outstanding for net loss per share calculation are as follows (in thousands, except per-share information):

		March 31, 2007				April 1, 2006
Option shares outstanding			3,742				3,490
Weighted average exercise price of option shares outstanding		$	6.39			$	5.60
Convertible notes of $30.0 million issued on May 18, 2006 (conversion price at $5.36)			5,597				—
Warrants issued on May 18, 2006 with the above convertible notes (exercise price at $6.432)			420				—

     Comprehensive Loss

     Comprehensive income (loss) is the total of net income (loss) and all other revenue, expenses, gains and losses recorded directly in equity. The Company’s “other comprehensive loss” consists of foreign currency translation adjustments. The comprehensive loss equals the net loss for the three months ended March 31, 2007 and April 1, 2006 as there were no foreign currency translation adjustments and no tax effect on the components of other comprehensive loss for such periods.

     Stockholders’ Deficit

     In the first quarter of 2007, the Company adopted FSP EITF Issue No. 00-19-2, “Accounting for Registration Payment Arrangements,” which specifies that the contingent obligation to make future payments or otherwise transfer consideration under a registration payment arrangement, whether issued as a separate agreement or included as a provision of a financial instrument or other agreement, should be separately recognized and measured in accordance with FASB Statement No. 5, “Accounting for Contingencies.” As a result of the adoption, the Company’s beginning balance for accumulated deficit and the derivative liability were increased by $12,000. A reconciliation of the activity in the stockholders’ deficit accounts for the quarter ended March 31, 2007 is as follows:

																		Accumulated
		Common Stock																Other				Total
		Number of								Additional Paid-				Accumulated				Comprehensive				Stockholders’
		Shares				$0.01 Par Value				in Capital				Deficit				Loss				Equity (Deficit)
Balances at December 30, 2006			18,390			$	184			$	234,785			$	(243,075	)		$	(19	)		$	(8,125	)
Cumulative effect of adoption of FSP EITF Issue No. 00-19-2															(12	)							(12	)
Net loss and comprehensive loss			—				—				—				(6,290	)			—				(6,290	)
Issuance of common stock under employee stock option plans			297				3				1,065				—				—				1,068
Stock-based compensation			—				—				956				—				—				956
Balances at March 31, 2007			18,687			$	187			$	236,806			$	(249,377	)		$	(19	)		$	(12,403	)

Note 5. Related Party Transactions

     Future is a related party and its affiliates own approximately 8.6 million shares or 46% of Sipex’s outstanding common stock as of March 31, 2007. Sipex has a distribution agreement that provides for Future to act as the Company’s sole distributor for certain products within North America and Europe. Sales to Future are made under an agreement that provides protection against price reduction for its inventory of Sipex’s products. The Company recognizes revenue on sales to Future under the distribution agreement when Future sells the products to end customers. Future has historically accounted for a significant portion of the Company’s revenues. It is the Company’s largest distributor worldwide and accounted for 48% of its total net sales for the three months ended March 31, 2007 and April 1, 2006.

     From time to time, Future provides services and/or incurs expenses on behalf of the Company. The fair value of the unreimbursed expenses and uncompensated services rendered by Future has been recorded in the Company’s condensed consolidated financial statements as capital contributions. For the three months ended March 31, 2007 and April 1, 2006, there were no such un-reimbursed expenses or uncompensated services rendered by Future.

     In addition, Sipex incurred expense to Future totaling approximately $2,000 for marketing promotional materials, temporary accounting services and used furniture sold to the Company for the three months ended March 31, 2007. No such expenses were recorded for the three months ended April 1, 2006.

     On January 19, 2006, Sipex completed a $7.0 million private loan financing in which the Company issued a 9% secured note with convertible interest due January 19, 2008 to the affiliates of Future, which could provide these affiliates with the opportunity to obtain additional shares of Sipex’s common stock. The loan was repaid in March 2006. For the three months ended April 1, 2006, Sipex incurred interest expense totaling $86,000 related to the $7.0 million note with Future.

     As discussed in Note 13, on May 16, 2006, Sipex placed $30.0 million of its 5.5% Redeemable Convertible Senior Notes (“2006 Notes”) due 2026 and related warrants in a private placement transaction to accredited investors in reliance on Regulation D under the Securities Act of 1933, as amended (the “Securities Act”). Rodfre Holdings LLC (“Rodfre”), an affiliate of Alonim Investments Inc., Sipex’s largest stockholder, and an affiliate of Future, purchased 50% of the 2006 Notes or $15.0 million aggregate principal amount being placed in this offering. The 2006 Notes will mature on May 18, 2026 and bear interest at an annual rate of 5.5% payable semi-annually on May 15 and November 15 of each year, beginning on November 15, 2006. On December 21, 2006, Rodfre paid $2.7 million to exercise its warrant for 419,776 shares of Sipex common stock at $6.432 per share. As of March 31, 2007, the affiliates of Future held 8.6 million shares, or 46% of the Company’s outstanding common stock.

     Interest expense incurred by Sipex relating to the $15.0 million portion of 2006 Notes sold to Rodfre totaled $380,000 for the three months ended March 31, 2007.

     On September 8, 2006, Sipex appointed two executive vice presidents of Future to its Board of Directors. The Board has determined that both new directors are not independent within the meaning of Rule 4200(a) (15) of the NASDAQ Manual by virtue of their relationships with Future. Accordingly, the Board does not expect to appoint them to any standing committees of the Board. In connection with their appointment as directors, both new directors have agreed to recuse themselves from any Board discussions that relate to transactions between Sipex and Future.

     On March 29, 2007, the Company entered into a Securities Purchase Agreement with Rodfre to provide an unsecured promissory note facility of up to $10.0 million. This facility expires, and the borrowings and accrued interest under any notes issued under this facility are due and payable, on June 30, 2008, or upon certain other events such as a change of control. Borrowings under this promissory note facility bear interest of 9% per annum subject to an increased interest rate of up to 20% in case of default or after maturity. This promissory note facility is subordinate to the Company’s Loan and Security Agreement with Silicon Valley Bank and to its 5.5% Redeemable Convertible Senior Notes due 2026. No borrowing was made under the promissory note facility in the first quarter of 2007.

Note 6. Restructuring and Other

     Below is a summary of the activities related to restructuring (in thousands):

										Total
						Employee				Restructuring
		Facility Costs				Costs				Costs
Accrual balance, December 30, 2006		$	993			$	874			$	1,867
Incurred in 2007			—				8				8
Charges utilized			(209	)			(384	)			(593	)
Sub-lease income received			69				—				69
Adjustments to accrual			18				(23	)			(5	)
Accrual balance, March 31, 2007		$	871			$	475			$	1,346

     In the addition to the restructuring costs incurred above, in the first quarter of 2007, the Company incurred $60,000 of facility costs related to the unused fabrication portion of the Company’s headquarters facility in Milpitas, California, due to the transfer of wafer fabrication to Silan.

     During the three months ended March 31, 2007, for the unused portion of the Billerica facility initiated in October 2003, the Company utilized the restructuring accrual totaling $188,000 which primarily consisted of lease costs. Adjustments to the accrual for the Billerica facility primarily related to sub-lease income of $69,000 recorded on a cash basis due to the uncertainty of collectibility.

     During the three months ended March 31, 2007, for a workforce reduction plan initiated in the fourth quarter of 2006, the Company utilized $384,000. For facility costs related to the Milpitas wafer fabrication closure, restructuring charges utilized for the three months ended March 31, 2007, totaling $21,000, was for facility decontamination.

     As of March 31, 2007, the balance of the restructuring accrual primarily consisted of employee severance costs, contract termination costs and facility lease costs. These costs are expected to be paid over the next 12 months. The balance of the accrual as of March 31, 2007 totaled $1.3 million, all of which was the short-term portion.

Note 7. Income Tax

     The Company adopted the provisions of Financial Standards Accounting Board Interpretation No. 48, “Accounting for Uncertainty in Income Taxes,” (“FIN 48”) an interpretation of FASB Statement No. 109 (“SFAS 109”) on December 31, 2006. As a result of the implementation of FIN 48, the Company recognized no material adjustment in the liability for unrecognized income tax benefits. At the adoption date of December 31, 2006, the Company had approximately $2.4 million of unrecognized tax benefits, all of which would affect its effective tax rate if recognized before consideration of changes in valuation allowance. At March 31, 2007, the Company had $2.5 million of unrecognized tax benefits. In addition, the Company recognizes interest and penalties related to uncertain tax positions in income tax expense. At the adoption date of December 31, 2006, the Company had approximately $53,000 of accrued interest and penalties for uncertain tax positions primarily from its foreign operations. For the three months ended March 31, 2007, the Company accrued $4,000 of interest and penalties related to its uncertain tax positions.

     At December 30, 2006, the Company had approximately $207.4 million, $73.6 million, and $131.7 million of federal, California, and Massachusetts net operating loss carryforwards, respectively. The Company believes it has had multiple ownership changes, as defined by Section 382 of the Internal Revenue Code (IRC), due to significant stock transactions in previous years that will limit the future realization of its net operating loss carryforwards. Based on estimates prepared to date, the Company believes Section 382 could result in the forfeiture of approximately $75.4 million of net operating loss carryforwards for federal income tax purposes and $31.5 million of net operating loss carryforwards for Massachusetts income tax purposes. Management believes there could also be an impact on the Company’s ability to utilize California net operating loss carryforwards as a result of Section 382. As the Company’s analysis is incomplete, these estimates are uncertain. The net operating loss carryforwards begin to expire in 2007 for federal and Massachusetts purposes and 2012 for California purposes.

     As of December 30, 2006, the Company had research and development tax credit carryforwards of approximately $3.1 million, $3.5 million, and $0.1 million which can be used to reduce future federal, California, and Massachusetts income taxes, respectively. Federal research and development tax credit carryforwards will expire beginning in fiscal 2010 through 2026. California and Massachusetts research and development tax credits will carry forward indefinitely. In addition, based on estimates prepared to date, the Company believes that $2.0 million of the federal research tax credit carryforwards could be subject to forfeiture due to Section 382 ownership changes under IRC Section 383.

     As of December 30, 2006, the Company had unused California manufacturers’ investment credits of approximately $2.1 million, which will expire beginning in fiscal 2007 through 2013. Management believes there could also be an impact on the Company’s ability to utilize the California manufacturers’ investment credits as a result of Section 382.

     The Company has recorded a 100% valuation allowance against its net deferred tax assets, due to the uncertainty regarding the magnitude of the Section 382 and 383 limitations as well as uncertainty concerning future taxable income.

     Sipex’s income tax expense primarily relates to its foreign operations as the Company continues to incur losses from domestic operations. The Company recorded income tax expense of $17,000 and $32,000 for the three months ended March 31, 2007 and April 1, 2006, respectively.

Note 8. Inventories

     Inventories are as follows (in thousands):

		March 31, 2007				December 30, 2006
Raw materials		$	466			$	768
Work-in-process			11,348				10,518
Finished goods			3,976				4,300
Total		$	15,790			$	15,586

Note 9. Accrued Expenses

     Accrued expenses are as follows (in thousands):

		March 31, 2007				December 30, 2006
Accrued compensation and benefits		$	3,427			$	2,815
Accrued provision for purchase commitment on excess inventories			1,007				1,417
Accrued interest and related derivative liability			889				679
Accrued audit fees			563				574
Accrued commissions			350				444
Accrued income taxes			343				340
Accrued warranty			342				259
Accrued legal fees			160				251
Accrued royalties			45				19
Other			383				387
		$	7,509			$	7,185

Note 10. Borrowing Arrangements

     On July 21, 2005, Sipex entered into a Loan and Security Agreement (the “Agreement”), as amended, with Silicon Valley Bank, which has an expiration date of September 29, 2007. The Agreement provides for a secured revolving line of credit with aggregate borrowings up to $5,000,000 limited to the available borrowing base (eligible accounts receivable as defined in the Agreement) plus $2,000,000. Available borrowings are further reduced by letters of credit which may be issued under the Agreement on behalf of the Company. Borrowings under the revolving line of credit bear an interest rate, chosen by the Company, either at the bank’s prime rate or LIBOR rate (depending upon the interest period of one, two or three months selected by Sipex) plus 2.75%. Under the Agreement, Sipex has granted the bank a security interest in all presently existing and later acquired collateral, including but not limited to goods, equipment, inventory, contract rights, and financial assets with the exception of Sipex’s headquarters property in Milpitas, California, which was sold in March 2006 (See Note 12). On March 9, 2006, Sipex entered into a sale and leaseback transaction with Mission West Properties, L.P. for its headquarters facility, located at 233 South Hillview Drive in Milpitas, California. Sipex has provided a security deposit of $1,265,000 in the form of an irrevocable standby letter of credit issued to Mission West Properties, L.P. under its

$5,000,000 line of credit with Silicon Valley Bank. In respect to financial covenants, the Agreement requires the Company to maintain a minimum liquidity ratio for each quarter ended not less than 2.50:1.00 which is calculated as the sum of (i) unrestricted cash and cash equivalents, short-term marketable securities and 50% of consolidated accounts divided by (ii) the outstanding borrowings from the bank. In addition, Sipex is required to maintain a minimum amount of tangible net worth (as defined in the Agreement) as of the last day of each quarter.

     The Agreement contains additional affirmative covenants, including, among others, covenants regarding the payment of taxes and other obligations, maintenance of insurance, reporting requirements and compliance with applicable laws and regulations. In addition, the Agreement contains negative covenants limiting the Company’s ability to dispose of assets, change its business plans, be acquired or beneficially owned, merge or consolidate, incur indebtedness, grant liens, make investments, pay dividends, repurchase stock, and pay subordinated debt. The agreement contains events of default that include, among others, non-payment of principal, interest or fees, inaccuracy of representations and warranties, violations of covenants, bankruptcy and insolvency events, any material adverse change, material judgments, cross defaults to certain other indebtedness and seizure of assets. The occurrence of an event of default will increase the applicable rate of interest by 5.0% and would, unless waived by Silicon Valley Bank, result in the immediate payment of all of its obligations under the agreement. As of March 31, 2007, the unused portion of the line of credit was $3,735,000.

     As part of the Agreement, in addition to the $5,000,000 secured revolving line of credit, Sipex can borrow under the term loans from September 28, 2006 to December 31, 2006 in an aggregate amount not to exceed $2,000,000. Interest accrues from the date of each term loan at a fixed rate of 9.25%. Each term loan shall be payable in thirty-six (36) equal monthly installments of principal plus accrued interest. When repaid or prepaid, the term loan may not be re-borrowed. As of March 31, 2007, $1,834,000 was outstanding under the term loan, of which $667,000 was the short-term portion and $1,167,000 was the long-term portion. If Sipex is unable to satisfy the financial covenant requirements and is unable to obtain a waiver from the bank, the Company may be required to repay the outstanding borrowing amounts and/or classify such amounts as short-term bank borrowing. For the three months ended March 31, 2007, the interest expense incurred for the loan was approximately $44,000.

     On March 29, 2007, the Company entered into a Securities Purchase Agreement with Rodfre, an affiliate of Future. This agreement creates a promissory note facility that provides that from time to time the Company may issue to Rodfre up to $10.0 million of 9% Unsecured Junior Notes in exchange for cash equal to the principal amounts of each note. The notes have customary events of default, including defaults upon failure to pay interest or principal amounts when due, breach of covenants (with a 15-day grace period), breach of representations and warranties, default on other indebtedness in excess of $1.0 million, or upon insolvency events. The holders of the notes will also have the option of demanding repayment of any outstanding amounts owed pursuant to the notes within 30 days of a change of control of Sipex. As of March 31, 2007, there was no borrowing against the promissory note facility.

Note 11. Accrued Warranty

     The Company’s products are sold with warranties ranging from one to two years depending upon the customers. Reserve requirements are recorded in the period of sale and are based on an assessment of the products sold with warranty and historical warranty costs incurred. The Company also assesses its pre-existing warranty obligations and may adjust the amounts based on actual experience or changes in future expectations.

     Changes in Sipex’s warranty liability for the three months ended March 31, 2007 and April 1, 2006 are as follows (in thousands):

		For the Three Months Ended
		March 31, 2007				April 1, 2006
Beginning accrued warranty		$	259			$	87
Warranty claims			(16	)			(2	)
Accruals for the period			99				(35	)
Ending accrued warranty		$	342			$	50

Note 12. Lease Financing Obligation

     On March 9, 2006, the Company entered into an Agreement for Purchase and Sale of Real Property with Mission West Properties, L.P. The agreement provides for the sale of the Company’s headquarters facility, located at 233 South Hillview Drive in Milpitas, California (the “Hillview facility”), to Mission West Properties, L.P. for a price of $13.4 million in cash. The Company incurred commission and selling costs of $0.8 million. The Hillview facility primarily consists of two connected buildings with approximately 95,700 total square feet (which includes 20,000 square feet of Class 10 clean room), 293 on-site surface parking spaces, and the underlying land with improvements and all fixtures attached thereto. Simultaneously, the Company entered into a Standard Form Lease agreement to lease back the Hillview facility from Mission West Properties, L.P. The lease term is 60 months with average lease payments of approximately $1.4 million per year. Further, the Company will have an option to extend the lease for an additional five years when the current term expires.

     The Company provided a security deposit of $1.3 million in the form of an irrevocable standby letter of credit issued to Mission West Properties, L.P. under the Company’s $5.0 million revolving line of credit with Silicon Valley Bank. The security deposit is held as security for the faithful performance by Sipex for all of the terms, covenants, and conditions prescribed under the lease agreement. Accordingly, the Company has accounted for this sale and leaseback transaction as a financing transaction shown on the condensed consolidated balance sheet as “lease financing obligation.” With the initial obligation recorded at $12.6 million, which represents net proceeds from the sale of the Hillview facility, no gain or loss was recorded upon the sale. The effective interest rate for the lease financing obligation is 9.3% which approximates the Company’s estimated borrowing rate at that time. Depreciation for the Hillview facility is recorded over the straight-line method for the remaining useful life.

     Future minimum lease payments for the lease financing obligation as of March 31, 2007 are as follows (in thousands):

Fiscal year ending December
2007 (remaining 9 months)		$	1,002
2008			1,368
2009			1,408
2010			1,449
2011			11,453
Total minimum lease payments			16,680
Less: amount representing interest			4,379
Present value of minimum lease payments			12,301
Less: current portion of lease financing obligation			205
Long-term lease financing obligation		$	12,096

     For the three months ended March 31, 2007, interest expense totaled $286,000 for the lease financing obligation.

Note 13. Convertible Senior Notes

     Terms and Conditions

     On May 18, 2006, Sipex issued $30.0 million of 5.5% Redeemable Convertible Senior Notes due 2026 (“2006 Notes”) in a private placement. Rodfre, an affiliate of Future, purchased 50% of the 2006 Notes or $15.0 million aggregate principal amount being sold in this offering. The remainder of the 2006 Notes was purchased by other accredited investors. The Company intends to use the net proceeds of approximately $29.0 million for general corporate purposes.

     The 2006 Notes will mature on May 18, 2026 and bear interest at an annual rate of 5.5% payable semi-annually on May 15 and November 15 of each year, beginning on November 15, 2006. Sipex may pay interest in cash or, solely at its option, in shares of its common stock. However, Sipex may only make interest payments in shares of its common stock if certain conditions in the indenture are met, including, among other things, that a registration statement related to shares issuable under the terms of the 2006 Notes and related warrants as noted below has been

declared effective and is available for the resale of any such interest shares, or other exemption from federal securities laws is available for the resale of such interest shares, and that Sipex’s common stock is listed on the Nasdaq Capital Market Exchange, the New York Stock Exchange or another national exchange. In addition, common stock used to pay any such interest will be valued at ninety percent (90%) of the market price of the common stock as of two days prior to the date of payment of such interest.

     The 2006 Notes are convertible into Sipex’s common stock at any time prior to maturity, initially at a conversion price of $5.36 per share, subject to adjustment upon certain events, including, among other things, dividends, stock splits and recapitalizations. If fully converted, the principal amount of the 2006 Notes would convert into 5,597,015 shares of the Company’s common stock.

     At any time prior to maturity, the Company may elect to automatically convert some or all of the 2006 Notes into shares of Sipex’s common stock if the daily closing price of its common stock exceeds one hundred fifty percent (150%) of the then applicable conversion price (initially $8.04 per share) for 20 trading days during any 30 trading-day period ending within 5 days of the notice of automatic conversion and either (a) a registration statement covering the resale of the common stock issued upon conversion is effective and available for use from the date Sipex notifies the holder of the 2006 Notes of the automatic conversion and Sipex reasonably expects such registration statement to remain effective through and including the earlier of the date of the automatic conversion or the last date on which the registration statement registering the resale of such common stock is required to be kept effective under the terms of the registration rights agreement, or (b) the common stock to be issued upon conversion may be sold pursuant to Rule 144(k) under the Securities Act.

     At any time on or after May 21, 2009, Sipex may redeem some or all of the 2006 Notes at 100% of the principal amount plus accrued and unpaid interest to, but excluding, the redemption date. If Sipex elects to redeem the 2006 Notes, it will provide notice of redemption to the holders of the 2006 Notes not less than 20 days and not more than 90 days before the redemption date.

     The holders of the 2006 Notes may require Sipex to repurchase the 2006 Notes for cash on May 15, 2011, May 15, 2016 or May 15, 2021, at a price equal to 100% of the principal amount plus accrued and unpaid interest, if any, to, but excluding, the applicable repurchase date.

     Upon a change of control or a termination of trading that occurs after such time as Sipex’s common stock has been listed for trading on the Nasdaq Capital Market Exchange, the New York Stock Exchange or other national automated quotation system or securities exchange, the holders of the 2006 Notes may require Sipex to repurchase the 2006 Notes in cash at a price equal to 100% of the principal amount of the 2006 Notes plus accrued and unpaid interest, if any, to, but excluding the applicable repurchase date.

     The 2006 Notes contain certain covenants applicable to Sipex, including a covenant restricting the amount of indebtedness that Sipex can incur that is senior or pari passu with the 2006 Notes to an aggregate principal amount of $7.5 million, unless such restriction is waived by holders of over 66 2/3% of the principal amount of the 2006 Notes then outstanding. In addition, an event of default would occur under the 2006 Notes for a number of reasons, including the Company’s failure to pay when due any principal, interest or late charges on the 2006 Notes, the default and acceleration of indebtedness with the Company’s bank and other lenders in amounts greater than $2.5 million, certain events of bankruptcy and its breach or failure to perform certain representations and obligations under the 2006 Notes. Upon the occurrence of an event of default, the Company’s obligations under the 2006 Notes may become due and payable in accordance with the terms thereof. Further, the holders of the 2006 Notes have imposed dividend restriction on Sipex.

     In conjunction with the issuance of the 2006 Notes, the Company issued warrants to purchase an aggregate of 839,552 shares of its common stock to the accredited investors. Each warrant is exercisable for one share of Sipex’s common stock at an initial exercise price of $6.432 per share, subject to adjustment upon certain events, including, among other things, dividends, stock splits and recapitalizations. The warrants are exercisable (in whole or in part) at any time on or before May 18, 2011, unless earlier terminated by Sipex. On December 21, 2006, Rodfre paid $2.7 million to exercise its warrant for 419,776 of Sipex common stock at $6.432 per share. As of March 31, 2007, the affiliates of Future held 8.6 million shares, or 46% of the Company’s outstanding capital stock.

     At any time after May 18, 2009, Sipex may terminate the remaining warrants if the closing price of its common stock exceeds 200% of the exercise price for at least 20 trading days during any 30 trading-day period. Such warrants will expire 90 days after the mailing date of the notice of termination. Any unexercised warrants with exercise prices below the then current fair market value as of the date of termination will automatically be deemed exercised in full pursuant to a cashless exercise. Each of the unexercised warrants will expire at 5:00 p.m., New York City time, on May 18, 2011, unless earlier terminated as described above.

     As Sipex was not current in its SEC filings by August 15, 2006, Sipex incurred additional interest on the 2006 Notes at an annual rate of 1.5% for the period beginning August 16, 2006 and ending on September 21, 2006, the date that the Company’s filings became current. In addition, Sipex’s common stock was not listed on the Nasdaq Capital Market Exchange, the New York Stock Exchange or another national exchange or automated quotation system by December 31, 2006. Sipex will pay additional interest on the 2006 Notes at an annual rate of 1.5% for the period beginning January 1, 2007 through the date that its common stock becomes listed for trading on one of the national exchanges. The Company’s common stock was traded on Nasdaq Capital Market Exchange on April 11, 2007.

     As part of the 2006 Note agreements, Sipex also entered into a Registration Rights Agreement (the “Registration Rights Agreement”), pursuant to which Sipex has agreed to file with the SEC a registration statement covering the resale of the 2006 Notes, the warrants and the shares of Sipex’s common stock issuable upon conversion of the 2006 Notes and exercise of the warrants no later than August 15, 2006 and to have the registration statement declared effective no later than December 31, 2006. Since Sipex did not file the registration statement by August 15, 2006, Sipex will be required to pay certain “registration delay payments,” up to an annual rate of 1.2%, as calculated in the Registration Rights Agreement, solely with respect to the 2006 Notes.

     The aforementioned additional interest and registration delay payments are collectively referred as the penalties (the “penalties”). The Company incurred such penalties and recorded additional interest expense of $183,000 for the three months ended March 31, 2007.

     Valuation of the 2006 Notes, Beneficial Conversion Feature, Warrants and Penalties

     The 2006 Notes were initially recorded during the second quarter of 2006 at $25.4 million representing their face values of $30.0 million, less estimated fair values of the freestanding warrants ($1.6 million), beneficial conversion feature of the 2006 Notes ($1.6 million), derivatives liability relating to the additional interest expense and registration delay penalties ($134,000), and debt issuance costs ($1.2 million). The difference between the initial recorded value and the face value of the 2006 Notes is being amortized to interest expense using the effective interest method through May 2011. The effective interest rate is 9.5% which approximates the Company’s estimated borrowing rate.

     The estimated fair value of the warrants of $1.6 million is accounted for as a freestanding warrant. The Company also recorded the $1.6 million estimated value of the beneficial conversion feature of the 2006 Notes. The Company applied the guidance from Emerging Issues Task Force, “EITF” Issue No. 98-5, “Accounting for Convertible Securities with Beneficial Conversion Features or Contingently Adjustable Conversion Ratios” and EITF Issue No. 00-27, “Application of Issue No. 98-5 to Certain Convertible Instruments” in accounting for the 2006 Notes, the accompanying warrants and the value of the beneficial conversion feature. Pursuant to EITF Issue No. 05-04 “The Effect of a Liquidated Damages Clause on a Freestanding Financial Instrument Subject to EITF Issue No. 00-19, ‘Accounting for Derivative Financial Instruments Indexed to, and Potentially Settled in, a Company’s Own Stock,’”, the Company combined the obligation to make registration delay payments and other interest penalty payments related to listing of the Company’s stock with the convertible senior notes for accounting purposes. Furthermore, these penalty obligations have been bifurcated from the combined instruments and accounted for as a derivative. The $134,000 derivative liability for the penalties recorded represents the estimated fair value of such obligation as of the date of issuance of the 2006 Notes relating to the penalties to be incurred in the event certain regulatory filings are not made in a timely manner and in the event of non-timely listing of the stock on an exchange. The fair value of the freestanding warrants and the estimated value of the beneficial conversion feature were recorded to increase the additional paid-in capital while the estimated fair value of the penalties was recorded as a derivative liability.

     The issuance costs totaled $1.3 million of which $1.2 million related to debt issuance costs and $71,000 related to warrant issuance costs. The $1.2 million, which includes placement agent fees of $900,000 on the $15.0 million of the 2006 Notes not sold to Future, is being amortized as part of interest expense over a five-year period. The Company reduced additional paid-in-capital by $71,000 related to warrant issuance costs.

     For the three months ended March 31, 2007, Sipex recorded a net interest expense reduction of approximately $115,000, which included $183,000 penalties, primarily due to early than expected listing of Sipex’s common stock on the Nasdaq Capital Market Exchange resulting in a downward revaluation of the estimated future payments of the derivative liability. The estimated total future payment of the derivative liability as of March 31, 2007 was $182,000, in accordance with the FSP EITF Issue No. 00-19-2, “Accounting for Registration Payment Arrangements.”

     For the three months ended March 31, 2007, the Company recorded interest expense of $612,000 under the effective interest method which included $413,000 for interest at 5.5% and $199,000 for amortization of discounts and debt issuance costs.

Note 14. Segment Information and Major Customers

     The Company’s Chief Executive Officer (“CEO”) is considered to be the Company’s chief operating decision maker. The Company has organized its operations based on a single operating segment: the development and delivery of high performance analog integrated circuits that are used primarily by original equipment manufacturers operating in the computing, communications and networking infrastructure markets. The CEO reviews financial information presented on a consolidated basis accompanied by disaggregated information about revenues by product family and geographic region for purposes of making operating decisions and assessing financial performance. The disaggregated revenue information reviewed on a product family basis by the CEO includes the interface, power management and optical storage families along with other legacy product families.

     The disaggregated sales information reviewed on a product family basis by the CEO is as follows (in thousands):

		For the Three Months Ended
		March 31, 2007				April 1, 2006
Interface		$	9,901			$	10,651
Power Management			5,386				4,586
Optical Storage			1,551				2,611
Other*			21				6
Total net sales		$	16,859			$	17,854

     Although Sipex has operations in Malaysia, China, Taiwan, Japan, South Korea, Germany, Canada and Belgium, substantially all the Company’s operations and long-lived assets reside in the United States.

     The Company markets its products primarily from its operations in the United States. International sales are made primarily to customers in Asia and Europe. Information regarding the Company’s net sales derived from products shipped to different geographic regions is as follows (in thousands):

		For the Three Months Ended
		March 31, 2007				April 1, 2006
United States		$	3,467			$	3,841
Japan			1,871				2,881
China			2,651				2,867
Singapore			2,827				2,609
United Kingdom			2,856				3,264
South Korea			1,438				222
Taiwan			917				1,111
Rest of the world			832				1,059
Total net sales		$	16,859			$	17,854

     Major customers who accounted for 10% or more as a percentage of total gross accounts receivable are as follows:

		March 31, 2007				December 30, 2006
Future Electronics Inc., a related party			40	%			15	%
Jetronic Technology			*				11	%

     Major customers who accounted for 10% or more as a percentage of total net sales are as follows:

		March 31, 2007				April 1, 2006
Future Electronics Inc., a related party			48	%			48	%
Komatsu			*				12	%

Note 15. Commitments and Contingencies

Commitments

     On August 21, 2003, Sipex announced an exclusive sourcing agreement with PolarFab, a US-based semiconductor foundry. The Company is under obligation to make minimum purchase commitments based on quarterly rolling forecasts extending out to one year. The Company has also agreed to purchase no less than 50% of the rolling forecast on an ongoing basis through the term of this agreement. The initial term of the agreement is five years with renewals on a negotiated basis. As of March 31, 2007, the minimum purchase commitment with PolarFab was approximately $2.0 million for the following twelve months.

     On July 2, 2004, the Company entered into an agreement to use certain licensed tools for circuit design and development as well as maintenance support for a total future payment commitment of $2.5 million over the next three and one-half years. The contract requires the Company to deposit 75% of the total commitment in a certificate of deposit account. As of March 31, 2007, the deposit amount was at $350,000, which is included in the accompanying condensed balance sheet as restricted cash.

     On December 20, 2005, Sipex entered into an agreement to use a fast simulator software tool for improvement of its product development. A commitment of future payments including maintenance support fees totaled $467,000 to be paid over the next three years. The agreement expires on December 19, 2008.

     On February 27, 2006, Sipex entered into a definitive Master Agreement with Silan. This transaction was related to closing the Company’s wafer fabrication operations located in Milpitas, California and that Sipex and Silan would work together to enable Silan to manufacture semiconductor wafers using the Company’s process technology. The Master Agreement includes a Process Technology Transfer and License Agreement which contemplates the transfer of eight (8) of the Company’s processes and related product manufacturing to Silan. Once Sipex confirms to Silan that the process qualification wafers and product qualification wafers (under a Wafer Transfer Agreement) conform to the Company’s specifications, Silan shall commence commercial manufacturing for the Company. Subject to the Company’s option to suspend in whole or in part, there is a purchase commitment under the Wafer Supply Agreement obligating Sipex to purchase from Silan an average of at least one thousand (1,000) equivalent wafers per week, calculated on a quarterly basis, for two years. As of March 31, 2007, Silan had not conformed to the Company’s specifications relating to the process qualification wafers and product qualification wafers.

     In May 2006, Sipex entered into a private label agreement with BCD Semiconductor Manufacturing Limited (“BCD”). The Company is obligated to purchase parts no less than one-third of the amount of the rolling six-month forecast. As of March 31, 2007, the minimum purchase commitment with BCD was $3,000 for the next six months.

     In June of 2006, Sipex entered into an agreement for verification software tools used for IC design. A commitment of future payments including maintenance support fees totaled $489,000 to be paid over the next three years. The agreement expires in June 2009.

     As of March 31, 2007, Sipex had future wafer purchase commitments totaling approximately $1.3 million with Episil for non-cancelable purchase orders issued. Currently, the Company does not have a minimum purchase agreement with Episil.

Legal Proceedings

     The Company is subject to legal proceedings, claims, and litigation arising in the ordinary course of business including those described below. The Company defends itself vigorously against any such claims. The outcome of certain of these matters below is currently not determinable, and an unfavorable outcome could have a material adverse effect on the Company’s consolidated financial position, results of operations, or cash flows.

     DiPietro v. Sipex

     In April 2003, Plaintiff Frank DiPietro (former CFO of Sipex) brought an action against Sipex for his severance benefits. Sipex counterclaimed for approximately $150,000 which was owed under a promissory note signed by Mr. DiPietro. In August 2004, Sipex filed two motions for summary judgment (one for Mr. DiPietro’s claims against it and one for its counterclaim against Mr. DiPietro under the promissory note). In June 2005, the Middlesex Superior Court granted both Sipex’s Motions for Summary Judgment. As a result, Mr. DiPietro was ordered to pay Sipex $149,486 plus costs and interest which has now appreciated to approximately $227,000 as of March 31, 2007. Interest is added to this amount at twelve (12%) percent per year. Mr. DiPietro filed a notice of appeal on July 19, 2005. In addition, the court has required Mr. DiPietro to post a bond in the amount of $150,000. On December 12, 2006, Sipex appeared before the Appeals Court, for oral arguments. Sipex expects to learn of the Court’s decision within the next three to nine months.

     Sipex v. Lestina

     On or about October 26, 2006, Sipex initiated an arbitration proceeding before the American Arbitration Association against one of its distributors, Lestina International. Sipex’s Demand For Arbitration alleges that Lestina breached the Distributor Agreement between Sipex and itself by, inter alia, failing to make timely payments on invoices resulting in a $281,667 unpaid balance, plus interest, owing to Sipex. The Demand also seeks attorneys’ fees and costs of suit.

     On or about January 15, 2007, Lestina filed an Answer denying the allegations of Sipex’s Demand and, at the same time, filed its Cross-Complaint for Damages against Sipex in the same arbitration proceeding. In the Cross-Complaint, Lestina asserts, inter alia, that Sipex breached the Distributor Agreement by failing to fulfill all outstanding orders placed by Lestina prior to that Agreement’s termination, and that Sipex committed other acts constituting interference with Lestina’s contractual relations and negligent misrepresentation. Lestina seeks damages in an amount according to proof at trial, attorneys’ fees and costs.

     The arbitration is in its early stages, no discovery has taken place. The arbitration hearing has been set to commence on July 25, 2007. The Company believes that its claims against Lestina have merit and that Sipex has meritorious defenses to the claims alleged by Lestina in the Cross-Complaint, and the Company intends to defend against those claims vigorously.

Note 16 — Subsequent Events

     The Company’s common stock was approved for listing on the Nasdaq Capital Market Exchange and started to trade on the opening of the market on April 11, 2007 under the symbol “SIPX.”

     On May 7, 2007, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) by and among Exar Corporation, a Delaware corporation (“Exar”), Side Acquisition Corp., a Delaware corporation and a wholly owned subsidiary of Exar (“Merger Sub”), and Sipex. Pursuant to the Merger Agreement and subject to the terms and conditions set forth therein, Merger Sub will be merged with and into Sipex (the “Merger”), with Sipex becoming the surviving corporation and a wholly owned subsidiary of Exar. At the Effective Time (as defined in the Merger Agreement) of the Merger, each issued and outstanding share of common stock, par value $0.01 per share, of Sipex (“Sipex Common Stock”) will be converted into the right to receive 0.6679 (the “Exchange Ratio”) of a share of common stock, par value $0.0001 per share, of Exar (“Exar Common Stock”).

     Certain affiliates of Sipex have entered into a voting agreement (the “Sipex Voting Agreement”) with Exar pursuant to which, among other things, they have agreed to vote in favor of the Merger all shares of Sipex Common Stock which they are entitled to vote, unless the Merger Agreement is terminated. Certain affiliates of Exar also have entered into a voting agreement (the “Exar Voting Agreement”) with Sipex pursuant to which, among other things, they have agreed to vote in favor of the issuance of Exar Common Stock as merger consideration for the Merger all shares of Exar Common Stock to which they are entitled to vote, unless the Merger Agreement is terminated. In addition, Exar and Sipex will file a proxy statement/prospectus and other documents concerning the proposed merger transaction with the SEC.

     The transaction has been structured as a stock-for-stock reverse triangular merger whereby a wholly owned subsidiary of Exar will merge with and into Sipex, with Sipex surviving the merger as a wholly-owned subsidiary of Exar. The companies expect the transaction to close by the third calendar quarter of 2007. The transaction is subject to the approval of stockholders from both companies as well as customary closing conditions and regulatory approvals.

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.

Date: June 26, 2007

		SIPEX CORPORATION
		/s/ Clyde R. Wallin   Clyde R. Wallin
		Chief Financial Officer and
		Senior Vice President of Finance
		(Duly Authorized Officer &
		Principal Financial Officer)

Exhibit Index

Exhibit Number		Title
31.1		Certification of Chief Executive Officer pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002(previously filed on May 15, 2007 as an exhibit to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2007, and incorporated herein by reference).
31.2		Certification of Chief Financial Officer pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002(previously filed on May 15, 2007 as an exhibit to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2007, and incorporated herein by reference).
31.3		Certification of Chief Executive Officer pursuant to Section 302(a) of the Sarbanes - Oxley Act of 2002.
31.4		Certification of Chief Financial Officer pursuant to Section 302(a) of the Sarbanes - Oxley Act of 2002.
32.1		Certification of Chief Executive Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002(previously filed on May 15, 2007 as an exhibit to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2007, and incorporated herein by reference).
32.2		Certification of Chief Financial Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002(previously filed on May 15, 2007 as an exhibit to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2007, and incorporated herein by reference).
32.3		Certification of Chief Executive Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes - Oxley Act of 2002.
32.4		Certification of Chief Financial Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes - Oxley Act of 2002.