---

---

FORM 6-K
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 of
the Securities Exchange Act of 1934
For the month of July 2005

001-14832
(Commission File Number)

CELESTICA INC. (Translation of registrant's name into English)

1150 Eglinton Avenue East
Toronto, Ontario
Canada, M3C 1H7
(416) 448-5800
(Address of principal executive offices)

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

Indicate by check mark whether the registrant is submitting the Form 6-K in paper as permitted by
Regulation S-T Rule 101(b)(1):                             

Indicate by check mark whether the registrant is submitting the Form 6-K in paper as permitted by
Regulation S-T Rule 101(b)(7):                             

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

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

---

---

---

Celestica Inc.
Form 6-K
Month of July 2005

The following information filed with this Form 6-K is incorporated by reference in Celestica's registration statements, the prospectuses included therein, and any registration statement subsequently filed by Celestica with the Securities and Exchange Commission:

•

Press Release, dated July 21, 2005, the text of which is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Exhibits

99.1 — Press Release, dated July 21, 2005

---

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.

		CELESTICA INC.
Date: July 21, 2005		By:	/s/  PAUL NICOLETTI       Paul Nicoletti Senior Vice President and Corporate Treasurer

---

EXHIBIT INDEX

99.1 — Press Release, dated July 21, 2005

---

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 99.1

FOR IMMEDIATE RELEASE		Thursday, July 21, 2005
(All amounts in U.S. dollars. Per share information based on diluted shares outstanding unless noted otherwise.)

CELESTICA ANNOUNCES SECOND QUARTER
FINANCIAL RESULTS

Second Quarter Summary

•

Revenue up 5% sequentially to $2,251 million



•

GAAP earnings of $0.06 per share compared to GAAP loss ($0.04) per share last year



•

Adjusted net earnings of $0.17 per share compared to $0.10 per share a year ago



•

Operating margin of 2.6% compared to 1.5% a year ago



•

Cash cycle and inventory turns improve; free cash flow of $104 million



•

Q3 revenue guidance of $1.9 — $2.2 billion, adjusted net earnings of $0.09 — $0.19

        TORONTO, Canada — Celestica Inc. (NYSE: CLS, TSX: CLS/SV), a world leader in electronics manufacturing services (EMS), today announced financial results for the second quarter ended June 30, 2005.

        Revenue was $2,251 million, compared to $2,314 million in the second quarter of 2004. Net earnings on a GAAP basis for the second quarter were $12.6 million or $0.06 per share, compared to a GAAP net loss for the second quarter of 2004 of ($7.9) million or ($0.04) per share. Included in GAAP earnings for the quarter is a recovery of $13.8 million or $0.06 per share for amounts relating to a customer that were previously provided for in the fourth quarter of 2004.

        Adjusted net earnings for the quarter were $39.8 million or $0.17 per share compared to $22.8 million or $0.10 per share for the same period last year. Adjusted net earnings is defined as net earnings before amortization of intangible assets, gains or losses on the repurchase of shares and debt, integration costs related to acquisitions, option expense, other charges net of tax (detailed GAAP financial statements and supplementary information related to adjusted net earnings appear at the end of this press release). These results compare with the company's guidance for the second quarter, announced on April 21, 2005, of revenue of $2.1 — $2.35 billion and adjusted net earnings per share of $0.13 to $0.21.

        For the six months ended June 30, 2005, revenue increased to $4,401 million compared to $4,331 million for the same period in 2004. Net earnings on a GAAP basis were $1.0 million or $0.00 per share compared to a net loss of ($20.0) million or ($0.09) per share last year. Adjusted net earnings for the first six months were $73.2 million or $0.32 per share compared to adjusted net earnings of $27.3 million or $0.12 per share in 2004.

---

        "Our second quarter results continue to show the benefits from reducing excess capacity and implementing efficiency initiatives across the organization," said Steve Delaney, CEO, Celestica. "While the second quarter environment was stable, third quarter demand is rolling up weaker than the seasonality we would typically experience. Despite the challenges of softening demand in some of our largest segments, we will continue to aggressively focus on expanding margins and returns on capital for the balance of the year."

Outlook

        For the third quarter ending September 30, 2005, the company anticipates revenue to be in the range of $1.9 billion to $2.2 billion, and adjusted earnings per share ranging from $0.09 to $0.19.

        Management will be hosting its regular quarterly results conference call at 4:30 p.m. today which can also be accessed at www.celestica.com.

Supplementary Information

        In addition to disclosing detailed results in accordance with Canadian generally accepted accounting principles (GAAP), Celestica also provides supplementary non-GAAP measures as a method to evaluate the company's operating performance.

        Management uses adjusted net earnings as a measure of enterprise-wide performance. As a result of acquisitions made by the company, restructuring activities, securities repurchases and the adoption of fair value accounting for stock options, management believes adjusted net earnings is a useful measure that facilitates period-to-period operating comparisons and allows the company to compare its operating results with its competitors in the U.S. and Asia. Adjusted net earnings excludes the effects of acquisition-related charges (most significantly, amortization of intangible assets and integration costs related to acquisitions), other charges (most significantly, restructuring costs and the write-down of goodwill and long-lived assets), gains or losses on the repurchase of shares or debt, option expenses, and the related income tax effect of these adjustments and any significant deferred tax write-offs. Adjusted net earnings does not have any standardized meaning prescribed by GAAP and is not necessarily comparable to similar measures presented by other companies. Adjusted net earnings is not a measure of performance under Canadian or U.S. GAAP and should not be considered in isolation or as a substitute for net earnings (loss) prepared in accordance with Canadian or U.S. GAAP. The company has provided a reconciliation of adjusted net earnings to Canadian GAAP net earnings (loss) below.

2

---

About Celestica

        Celestica is a world leader in the delivery of innovative electronics manufacturing services (EMS). Celestica operates a highly sophisticated global manufacturing network with operations in Asia, Europe and the Americas, providing a broad range of integrated services and solutions to leading OEMs (original equipment manufacturers). Celestica's expertise in quality, technology and supply chain management, and leadership in the global deployment of Lean principles, enables the company to provide competitive advantage to its customers by improving time-to-market, scalability and manufacturing efficiency.

        For further information on Celestica, visit its website at http://www.celestica.com.

        The company's security filings can also be accessed at http://www.sedar.com and http://www.sec.gov.

Safe Harbour and Fair Disclosure Statement

        This news release contains forward-looking statements related to our future growth, trends in our industry and our financial and operational results and performance that are based on current expectations, forecasts and assumptions involving risks and uncertainties that could cause actual outcomes and results to differ materially. These risks and uncertainties include, but are not limited to: variability of operating results among periods; inability to retain or grow our business due to execution problems resulting from significant headcount reductions, plant closures and product transfer associated with major restructuring activities; the effects of price competition and other business and competitive factors generally affecting the EMS industry; the challenges of effectively managing our operations during uncertain economic conditions; our dependence on a limited number of customers; our dependence on industries affected by rapid technological change; the challenge of responding to lower-than-expected customer demand; our ability to successfully manage our international operations; component constraints; our ability to manage our restructuring and the shift of production to lower cost geographies. These and other risks and uncertainties and factors are discussed in the Company's various public filings at www.sedar.com and www.sec.gov, including our Form 20-F and subsequent reports on Form 6-K filed with the Securities and Exchange Commission.

        As of its date, this press release contains any material information associated with the company's financial results for the second quarter ended June 30, 2005 and revenue and adjusted net earnings guidance for the third quarter ending September 30, 2005. Earnings guidance is reviewed by the company's board of directors. It is Celestica's policy that earnings guidance is effective on the date given, and will only be updated through a public announcement.

Contacts:
Laurie Flanagan		Paul Carpino
Celestica Global Communications		Celestica Investor Relations
(416) 448-2200		(416) 448-2211
media@celestica.com		clsir@celestica.com

3

---

Financial Summary

GAAP Financial Summary

Three months ended June 30			2004					2005					Change
	Revenue		$	2,314		M		$	2,251		M		$	(63	)	M
	Net earnings (loss) *		$	(8	)	M		$	13		M			21		M
	Net earnings (loss) per share *		$	(0.04	)			$	0.06				$	0.10
	Cash provided by (used in) Operations		$	(188	)	M		$	124		M		$	312		M
	Cash Position at June 30		$	803		M		$	1,299		M		$	496		M

Six months ended June 30			2004					2005					Change
	Revenue		$	4,331		M		$	4,401		M		$	70		M
	Net earnings (loss) *		$	(20	)	M		$	1		M			21		M
	Net earnings (loss) per share *		$	(0.09	)			$	0.00				$	0.09
	Cash provided by (used in) Operations		$	(264	)	M		$	135		M		$	399		M

Adjusted Net Earnings Summary

Three months ended June 30			2004					2005					Change
	Adjusted net earnings *		$	23		M		$	40		M		$	17		M
	Adjusted net EPS(1)		$	0.10				$	0.17				$	0.07

Six months ended June 30			2004					2005					Change
	Adjusted net earnings *		$	27		M		$	73		M		$	46		M
	Adjusted net EPS(1)		$	0.12				$	0.32				$	0.20

Adjusted Net Earnings Calculation

			Three Months										Six Months
			2004					2005					2004					2005
	GAAP net earnings (loss) *		$	(8	)	M		$	13		M		$	(20	)	M		$	1		M
	Add: option expense			2		M			3		M			4		M			5		M
	Add: amortization of intangibles			8		M			7		M			15		M			14		M
	Add: acquisition integration costs(2)			—		M			—		M			—		M			—		M
	Add: other charges *			19		M			15		M			30		M			47		M
	Tax impact of above *			2		M			2		M			(2	)	M			6		M
	Adjusted net earnings *		$	23		M		$	40		M		$	27		M		$	73		M

---

(1)

For purposes of the diluted per share calculation for the three and six months ended June 30, 2004, the weighted average number of shares outstanding was 227.3 million and 221.7 million, respectively. For purposes of the diluted per share calculation for the three and six months ended June 30, 2005, the weighted average number of shares outstanding was 227.5 million and 228.2 million, respectively.

(2)

Integration for the six months ended June 30, 2005 was $0.3 million.

Guidance Summary

	2Q versus actuals		2Q 05 Guidance		2Q 05 Actual
	Revenue		$2.1B - $2.35B		$2.25B
	Adjusted net EPS		$0.13 - $0.21		$0.17
	Forward Guidance(1)		3Q 05 Guidance
	Revenue		$1.9B - $2.2B
	Adjusted net EPS		$0.09 - $0.19

---

(1)

Guidance for the third quarter is provided only on an adjusted net earnings basis. This is due to the difficulty in forecasting the various items impacting GAAP net earnings, such as the amount and timing of our restructuring activities. Additionally, we have repurchased convertible debt in the past. Since the timing and pricing of these repurchases are uncertain, it is difficult to predict any gains or losses on repurchases.

* reflects retroactive restatement for LYONs accounting change

4

---

CELESTICA INC.

CONSOLIDATED BALANCE SHEETS
(in millions of U.S. dollars)
(unaudited)

			December 31 2004			June 30 2005
Assets
Current assets:
	Cash and short-term investments		$	968.8		$	1,298.5
	Accounts receivable			1,023.3			910.3
	Inventories			1,062.9			1,093.7
	Prepaid and other assets			127.4			169.6
	Income taxes recoverable			89.1			85.6
	Deferred income taxes			1.8			1.5
				3,273.3			3,559.2
Capital assets				569.3			534.8
Goodwill from business combinations				872.9			872.9
Intangible assets				104.5			90.3
Other assets				119.8			131.2
			$	4,939.8		$	5,188.4
Liabilities and Shareholders' Equity
Current liabilities:
	Accounts payable		$	1,107.9		$	1,147.2
	Accrued liabilities			486.6			436.3
	Income taxes payable			93.2			89.2
	Deferred income taxes			0.6			11.5
	Current portion of long-term debt (note 4)			2.6			0.2
	Convertible debt (notes 2(i) and 5)			124.1			130.6
				1,815.0			1,815.0
Long-term debt (note 4)				500.8			750.2
Accrued pension and post-employment benefits				81.0			78.3
Deferred income taxes				23.4			25.0
Other long-term liabilities				30.8			31.7
				2,451.0			2,700.2
Shareholders' equity:
	Capital stock			3,559.1			3,562.5
	Warrants (note 6)			8.9			8.9
	Contributed surplus			142.9			154.5
	Option component of convertible debt (notes 2(i) and 5)			210.2			210.2
	Deficit			(1,473.6	)		(1,472.6	)
	Foreign currency translation adjustment			41.3			24.7
				2,488.8			2,488.2
			$	4,939.8		$	5,188.4

Accounting policy change (note 2(i))
Guarantees and contingencies (note 14)

See accompanying notes to consolidated financial statements.
These unaudited interim consolidated financial statements should be read in conjunction with the
2004 annual consolidated financial statements.

5

---

CELESTICA INC.

CONSOLIDATED STATEMENTS OF OPERATIONS AND DEFICIT
(in millions of U.S. dollars, except per share amounts)
(unaudited)

			Three months ended June 30						Six months ended June 30
			2004			2005			2004			2005
Revenue			$	2,314.2		$	2,250.7		$	4,331.1		$	4,401.3
Cost of sales				2,191.7			2,117.8			4,120.7			4,143.8
Gross profit				122.5			132.9			210.4			257.5
Selling, general and administrative expenses				90.8			77.4			169.7			154.6
Amortization of intangible assets				7.7			7.0			14.9			14.2
Integration costs related to acquisitions				0.4			—			0.4			0.3
Other charges (note 7)				18.6			15.1			29.5			47.0
Accretion of convertible debt (notes 2(i) and 5)				5.6			3.3			11.1			6.5
Interest on long-term debt				2.1			9.5			3.1			18.3
Interest expense (income), net				0.7			(1.1	)		0.7			(2.0	)
Earnings (loss) before income taxes				(3.4	)		21.7			(19.0	)		18.6
Income taxes expense (recovery):
	Current			12.8			8.8			14.6			17.0
	Deferred			(8.3	)		0.3			(13.6	)		0.6
				4.5			9.1			1.0			17.6
Net earnings (loss) for the period			$	(7.9	)	$	12.6		$	(20.0	)	$	1.0
Deficit, beginning of period			$	(595.0	)	$	(1,485.2	)	$	(581.0	)	$	(1,473.6	)
Change in accounting policy (note 2(i))				—			—			(1.9	)		—
Deficit as restated, beginning of period				(595.0	)		(1,485.2	)		(582.9	)		(1,473.6	)
Loss on repurchase of convertible debt				(36.6	)		—			(36.6	)		—
Net earnings (loss) for the period				(7.9	)		12.6			(20.0	)		1.0
Deficit, end of period			$	(639.5	)	$	(1,472.6	)	$	(639.5	)	$	(1,472.6	)
Basic earnings (loss) per share (note 11)			$	(0.04	)	$	0.06		$	(0.09	)	$	0.00
Diluted earnings (loss) per share (note 11)			$	(0.04	)	$	0.06		$	(0.09	)	$	0.00
Weighted average number of shares outstanding (in millions) (note 11):
	Basic			224.6			226.0			218.9			226.4
	Diluted			224.6			227.5			218.9			228.2

See accompanying notes to consolidated financial statements.
These unaudited interim consolidated financial statements should be read in conjunction with the
2004 annual consolidated financial statements.

6

---

CELESTICA INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS
(in millions of U.S. dollars)
(unaudited)

			Three months ended June 30						Six months ended June 30
			2004			2005			2004			2005
Cash provided by (used in):
Operations:
Net earnings (loss) for the period			$	(7.9	)	$	12.6		$	(20.0	)	$	1.0
Items not affecting cash:
	Depreciation and amortization			54.0			40.2			103.0			82.5
	Deferred income taxes			(8.3	)		0.3			(13.6	)		0.6
	Accretion of convertible debt			5.6			3.3			11.1			6.5
	Non-cash charge for option issuances			2.1			2.5			3.7			5.0
	Restructuring charges (note 7)			1.9			6.1			3.1			7.0
	Other charges (note 7)			0.6			(15.8	)		(2.0	)		(16.9	)
	Gain on settlement of principal component of convertible debt (note 5)			(32.9	)		—			(32.9	)		—
Other				(0.6	)		(0.4	)		17.9			(2.2	)
Changes in non-cash working capital items:
	Accounts receivable			(93.6	)		35.7			(151.9	)		112.9
	Inventories			78.5			3.8			(24.2	)		(35.7	)
	Prepaid and other assets			(6.8	)		4.1			(20.5	)		(16.4	)
	Income taxes recoverable			0.3			3.0			(0.7	)		3.5
	Accounts payable and accrued liabilities			(179.0	)		28.5			(135.1	)		(8.9	)
	Income taxes payable			(1.9	)		0.4			(2.2	)		(4.0	)
	Non-cash working capital changes			(202.5	)		75.5			(334.6	)		51.4
Cash provided by (used in) operations				(188.0	)		124.3			(264.3	)		134.9
Investing:
	Acquisitions, net of cash acquired			(8.5	)		—			(42.3	)		—
	Purchase of capital assets			(40.6	)		(30.9	)		(97.0	)		(69.3	)
	Proceeds from sale of assets			18.5			10.4			21.6			21.5
	Other			(0.5	)		0.2			1.0			0.5
Cash used in investing activities				(31.1	)		(20.3	)		(116.7	)		(47.3	)
Financing:
	Increase in long-term debt (note 4)			500.0			250.0			500.0			250.0
	Long-term debt issue costs			(12.0	)		(4.2	)		(12.0	)		(4.2	)
	Deferred financing costs			(3.8	)		—			(3.8	)		—
	Repurchase of convertible debt (note 4)			(299.7	)		—			(299.7	)		—
	Repayment of long-term debt			(1.0	)		(0.1	)		(39.1	)		(3.0	)
	Issuance of share capital			5.2			1.1			8.0			3.4
	Other			2.2			(3.7	)		1.6			(4.1	)
Cash provided by financing activities				190.9			243.1			155.0			242.1
Increase (decrease) in cash				(28.2	)		347.1			(226.0	)		329.7
Cash, beginning of period				831.0			951.4			1,028.8			968.8
Cash, end of period			$	802.8		$	1,298.5		$	802.8		$	1,298.5

Cash is comprised of cash and short-term investments.
Supplemental cash flow information (note 12)

See accompanying notes to consolidated financial statements.
These unaudited interim consolidated financial statements should be read in conjunction with the
2004 annual consolidated financial statements.

7

---

CELESTICA INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(in millions of U.S. dollars, except per share amounts)
(unaudited)

1.     NATURE OF BUSINESS:

Our primary operations consist of providing a broad range of services including manufacturing, design, new product introduction, engineering services, supply chain management, printed circuit assembly, system assembly, fulfillment, logistics and after-market services and support to our customers primarily in the computing and telecommunications industries and increasingly in the aerospace and defense, automotive, consumer electronics and industrial end markets. We have operations in the Americas, Asia and Europe.

We prepare our financial statements in accordance with generally accepted accounting principles (GAAP) in Canada with a reconciliation to accounting principles generally accepted in the United States, disclosed in note 20 to the 2004 annual consolidated financial statements.

We experience seasonal variations in revenue with revenue typically lowest in the first quarter.

2.     SIGNIFICANT ACCOUNTING POLICIES:

The disclosures contained in these unaudited interim consolidated financial statements do not include all requirements of Canadian GAAP for annual financial statements. These unaudited interim consolidated financial statements should be read in conjunction with the 2004 annual consolidated financial statements.

These unaudited interim consolidated financial statements reflect all adjustments, consisting only of normal recurring accruals, which are, in the opinion of management, necessary to present fairly our financial position as of June 30, 2005 and the results of operations and cash flows for the three and six months ended June 30, 2004 and 2005.

These unaudited interim consolidated financial statements are based upon accounting principles consistent with those used and described in the 2004 annual consolidated financial statements, except for the following:

(i)

Liabilities and equity:

Effective December 31, 2004, we early adopted the amendment to CICA Handbook Section 3860, "Financial Instruments — Presentation and Disclosure." The revised standard requires obligations of a fixed amount that may be settled, at the issuer's option, by a variable number of the issuer's own equity instruments to be presented as liabilities. The standard is effective on a retroactive basis with restatement of prior periods. As a result of adopting this standard, we reclassified the principal component of our convertible debt (LYONs) as a debt instrument and recorded all accretion charges, amortization of deferred financing costs, gains and losses on repurchases relating to the principal component and related tax effects as charges to the statement of operations. The option component of the LYONs continues to be accounted for as an equity instrument.

Upon adoption of this standard, we:

(a)

reclassified $124.1 of LYONs from equity to debt at December 31, 2004;



(b)

reclassified $1.3 of deferred financing costs from equity to other assets at December 31, 2004;



(c)

reduced deferred tax assets and equity by $1.9 at December 31, 2004;



(d)

recorded a charge of $1.9 to opening deficit at January 1, 2004 representing the cumulative amount of amortization of deferred financing costs, net of tax;



(e)

recorded accretion charges, amortization of deferred financing costs and the related tax effects in the statement of operations in the amounts of $3.8 and $7.5, respectively, for the three and six months ended June 30, 2004; and



(f)

reclassified the gain on the repurchase of LYONs and related tax effect from equity to other charges and tax expense in the amount of $21.4 for the three and six months ended June 30, 2004.

There was no impact to basic or diluted loss per share for any period as a result of adopting this change retroactively.

8

---

3.     ACQUISITIONS AND DIVESTITURES:

2004 activities:

On March 12, 2004, we acquired Manufacturers' Services Limited (MSL), a full-service global electronics manufacturing and supply chain services company, headquartered in the United States. This acquisition provided us with an expanded customer base and service offerings, and supported our strategy of diversifying our end-markets.

The purchase price of $321.2 was financed with the issuance of 14.1 million subordinate voting shares, the issuance of options to purchase 2.1 million subordinate voting shares, the issuance of warrants to purchase 1.1 million subordinate voting shares, and $51.6 in cash.

As part of the purchase price of MSL, we recorded a liability for consolidating some of the acquired MSL facilities, including a workforce reduction. The planned actions include employee termination and lease exit costs in all geographies. The employee terminations will be completed in early 2006. The long-term lease and contractual obligations will be paid out over the remaining lease terms through 2010. Cash outlays are funded from cash on hand.

The following table details the activity through the MSL restructuring liability:

		Employee termination costs			Lease and other contractual obligations			Facility exit costs and other			Total accrued liability
Accrued on acquisition		$	28.0		$	6.9		$	1.2		$	36.1
Cash payments			(14.7	)		(0.6	)		(0.2	)		(15.5	)
December 31, 2004			13.3			6.3			1.0			20.6
Cash payments			—			(0.3	)		—			(0.3	)
March 31, 2005			13.3			6.0			1.0			20.3
Cash payments			—			(3.0	)		(0.3	)		(3.3	)
June 30, 2005		$	13.3		$	3.0		$	0.7		$	17.0

In April 2004, we acquired certain assets located in the Philippines from NEC Corporation.

In September 2004, we sold certain assets relating to our power operations and signed a multi-year agreement to supply manufacturing services to the purchaser.

4.     LONG-TERM DEBT:

---

(a)

We have a 364-day credit facility for $600.0 which matures June 2007. The facility includes a $25.0 swing-line facility that provides for short-term borrowings up to a maximum of seven days. The credit facility permits us and certain designated subsidiaries to borrow funds for general corporate purposes (including acquisitions). Borrowings under the facility bear interest at LIBOR plus a margin except that borrowings under the swing-line facility bear interest at a base rate plus a margin. There are no borrowings outstanding under this facility. Commitment fees for the six months ended June 30, 2005 were $1.2.

9

---

The facility has restrictive covenants relating to debt incurrence and sale of assets and also contains financial covenants that require us to maintain certain financial ratios. A change of control is an event of default. Based on the required minimum financial ratios, at June 30, 2005, we are limited to approximately $350 of available debt incurrence. The available debt incurrence under the facility has been reduced by the $250.0 debt offering completed in the quarter and outstanding letters of credit totaling $83.6. We were in compliance with all covenants as at June 30, 2005.

(b)

In June 2004, we issued Senior Subordinated Notes due 2011 with an aggregate principal amount of $500.0, and a fixed interest rate of 7.875%. We incurred $12.0 in pre-tax underwriting commissions and expenses which we deferred and are amortizing over the term of the debt. The Notes are unsecured and are subordinated in right of payment to all our senior debt. The Notes may be redeemed on July 1, 2008 or later at various premiums above face value.

In connection with the Notes offering, we entered into agreements which swap the fixed interest rate on the Notes with a variable interest rate based on LIBOR plus a margin. The average interest rate on the Notes was 5.6% and 6.1% for the quarters ended March 31, 2005 and June 30, 2005, respectively.

(c)

In June 2005, we issued Senior Subordinated Notes due 2013 with an aggregate principal amount of $250.0, and a fixed interest rate of 7.625%. We incurred $4.2 in underwriting commissions and expenses which we deferred and are amortizing over the term of the debt. The Notes are unsecured and are subordinated in right of payment to all our senior debt. The Notes may be redeemed on July 1, 2009 or later at various premiums above face value.

5.     CONVERTIBLE DEBT:

Pursuant to Canadian GAAP, the LYONs are bifurcated into a principal component and an option component. The principal component is recorded as debt and the option component is recorded as equity. See note 2(i).

At June 30, 2005, we have outstanding LYONs with a principal amount at maturity of $614.4 payable August 1, 2020. Holders of the instruments have the option to require us to repurchase their LYONs on August 2, 2005, at a price of $572.82 per LYON, or a total of $352.0. As a result of the August 2, 2005 holders' option, we have classified the principal portion of the LYONs as a current liability. Also see note 8 to the 2004 annual consolidated financial statements.

In July 2005, we commenced a tender offer to purchase for cash the outstanding LYONs on August 2, 2005. If all the outstanding LYONs are tendered, we expect to incur an accounting loss of approximately $11.3 on the repurchase, which will be apportioned between the principal and option components, based on their relative fair values compared to their carrying values.

6.     WARRANTS:

In connection with the MSL acquisition, we issued Series A and Series B warrants to replace the outstanding MSL warrants. The Series A warrants are fully vested and exercisable at any time through March 14, 2007 at an exercise price of $18.72 per share. The Series B warrants are fully vested and exercisable at any time through July 3, 2008 at an exercise price of $16.73 per share. We have the right to require the holders of both Series A and Series B warrants to exercise their warrants if our subordinate voting shares trade at 175% of the exercise price of the warrants during a specified period.

10

---

7.     OTHER CHARGES:

		Three months ended June 30						Six months ended June 30
		2004			2005			2004			2005
2001 and 2002 restructuring (a)		$	1.9		$	(0.1	)	$	4.9		$	1.0
2003 restructuring (b)			0.8			—			1.8			(2.0	)
2004 restructuring (c)			48.2			6.8			57.7			8.7
2005 restructuring (d)			—			24.2			—			56.2
Total restructuring			50.9			30.9			64.4			63.9
Deferred financing costs			1.6			—			1.6			—
Gain on repurchase of convertible debt			(32.9	)		—			(32.9	)		—
Gain on sale of surplus land and building			(1.0	)		(2.0	)		(3.6	)		(3.1	)
Other (e)			—			(13.8	)		—			(13.8	)
Total		$	18.6		$	15.1		$	29.5		$	47.0

(a)

2001 and 2002 restructuring:

In 2001, we announced a restructuring plan in response to the weak end-markets in the computing and communications industries. In response to the prolonged difficult end-market conditions, particularly in the computing and communications industries, a second restructuring plan was announced in July 2002. The weak demand for our manufacturing services resulted in an accelerated move to lower-cost geographies and additional restructuring in the Americas and Europe.

These restructuring actions were focused on consolidating facilities, reducing the workforce, and transferring programs to lower-cost geographies. The majority of the employees terminated were manufacturing and plant employees. For leased facilities that were no longer used, the lease costs included in the restructuring costs represent future lease payments less estimated sublease recoveries. Adjustments were made to lease and other contractual obligations to reflect incremental cancellation fees paid for terminating certain facility leases and to reflect higher accruals for other leases due to delays in the timing of sublease recoveries and changes in estimated sublease rates, relating principally to facilities in the Americas.

We have completed the major components of our 2001 and 2002 restructuring plans, except for certain long-term lease and other contractual obligations, which will be paid out over the remaining lease terms through 2015. Cash outlays are funded from cash on hand.

11

---

The following table details the activity through the accrued restructuring liability and the non-cash charge:

		Employee termination costs			Lease and other contractual obligations			Facility exit costs and other			Total accrued liability			Non-cash charge			Total charge
January 1, 2001		$	—		$	—		$	—		$	—		$	—		$	—
Provision re: 2001			90.7			35.3			12.4			138.4			98.6			237.0
Cash payments			(51.2	)		(1.6	)		(2.9	)		(55.7	)		—			—
December 31, 2001			39.5			33.7			9.5			82.7			98.6			237.0
Provision re: 2002			128.8			51.7			8.5			189.0			194.5			383.5
Cash payments			(77.1	)		(14.7	)		(7.5	)		(99.3	)		—			—
Adjustments			(4.1	)		11.4			(2.7	)		4.6			(2.7	)		1.9
December 31, 2002			87.1			82.1			7.8			177.0			290.4			622.4
Cash payments			(83.4	)		(44.1	)		(7.8	)		(135.3	)		—			—
Adjustments			7.4			24.1			2.9			34.4			(10.8	)		23.6
December 31, 2003			11.1			62.1			2.9			76.1			279.6			646.0
Cash payments			(11.8	)		(27.5	)		(3.2	)		(42.5	)		—			—
Adjustments			0.7			2.2			0.3			3.2			1.4			4.6
December 31, 2004		$	—		$	36.8		$	—		$	36.8		$	281.0		$	650.6

The following table details the 2005 activity by quarter:

		Employee termination costs			Lease and other contractual obligations			Facility exit costs and other			Total accrued liability			Non-cash charge			Total charge
December 31, 2004		$	—		$	36.8		$	—		$	36.8		$	281.0		$	—
Cash payments			—			(2.6	)		—			(2.6	)		—			—
Adjustments			—			1.1			—			1.1			—			1.1
March 31, 2005			—			35.3			—			35.3			281.0			1.1
Cash payments			—			(2.6	)		—			(2.6	)		—			—
Adjustments			—			0.3			—			0.3			(0.4	)		(0.1	)
June 30, 2005		$	—		$	33.0		$	—		$	33.0		$	280.6		$	1.0

The accrued restructuring liability is recorded in Accrued Liabilities in the accompanying consolidated balance sheet.

(b)

2003 restructuring:

In January 2003, we announced that we would further reduce our manufacturing capacity. These restructuring actions were focused on workforce reductions and facility consolidations in Europe. Termination announcements were made in 2003 to approximately 480 employees, primarily manufacturing and plant employees. All employees were terminated as of March 31, 2005. In March 2005, we sold to a third party the production facility we closed in 2003 at a loss of $2.4. The purchaser also agreed to employ certain employees, which reduced our remaining contractual severance obligations. We adjusted our accrued liability to reflect the reduced severance costs. We recorded a net recovery of $2.0 relating to this transaction. The remaining accrued liability includes payments to regulatory agencies, in accordance with local labour legislation, which we expect to pay out through 2007. Cash outlays are funded from cash on hand.

12

---

The following table details the activity through the accrued restructuring liability and the non-cash charge:

		Employee termination costs			Lease and other contractual obligations			Facility exit costs and other			Total accrued liability			Non-cash charge			Total charge
January 1, 2003		$	—		$	—		$	—		$	—		$	—		$	—
Provision			61.4			0.3			1.1			62.8			8.5			71.3
Cash payments			(28.6	)		(0.3	)		(1.1	)		(30.0	)		—			—
December 31, 2003		$	32.8		$	—		$	—		$	32.8		$	8.5		$	71.3
Cash payments			(19.0	)		—			—			(19.0	)		—			—
Adjustments			2.0			—			—			2.0			—			2.0
December 31, 2004		$	15.8		$	—		$	—		$	15.8		$	8.5		$	73.3

The following table details the 2005 activity by quarter:

		Employee termination costs			Lease and other contractual obligations			Facility exit costs and other			Total accrued liability			Non-cash charge			Total charge
December 31, 2004		$	15.8		$	—		$	—		$	15.8		$	8.5		$	—
Cash payments			(1.3	)		(0.4	)		—			(1.7	)		—			—
Adjustments			(4.8	)		0.4			—			(4.4	)		2.4			(2.0	)
March 31, 2005			9.7			—			—			9.7			10.9			(2.0	)
Cash payments			(0.4	)		—			—			(0.4	)		—			—
June 30, 2005		$	9.3		$	—		$	—		$	9.3		$	10.9		$	(2.0	)

$5.2 of the accrued termination costs is classified in Other Long-term Liabilities. The remaining accrued restructuring liability is recorded in Accrued Liabilities in the accompanying consolidated balance sheet.

(c)

2004 restructuring:

In January and April 2004, we announced plans to further restructure our operations to better align capacity with customers' requirements. These restructuring actions were focused on workforce reductions and facility consolidations in all regions. As of June 30, 2005, termination announcements were made to approximately 5,000 employees, consisting of executive, manufacturing and plant employees. Approximately 150 employees remain to be terminated as of June 30, 2005. Approximately 60% of the employee terminations were in the Americas, 30% in Asia and 10% in Europe.

In 2004, we recorded a non-cash charge of $33.9 to write-down certain long-lived assets primarily in Asia (55%) and the Americas (40%) which became impaired due to facility consolidations. In addition to buildings, leasehold improvements and machinery and equipment, the asset impairments also included an intellectual property write-down in the Americas. In May 2005, we sold one of our restructured facilities in Asia and incurred an additional loss of $6.7.

We expect to complete these restructuring actions in 2005. Cash outlays are funded from cash on hand.

13

---

The following table details the activity through the accrued restructuring liability and the non-cash charge:

		Employee termination costs			Lease and other contractual obligations			Facility exit costs and other			Total accrued liability			Non-cash charge			Total charge
January 1, 2004		$	—		$	—		$	—		$	—		$	—		$	—
Provision			98.6			8.7			5.9			113.2			33.9			147.1
Cash payments			(79.8	)		(4.5	)		(0.9	)		(85.2	)		—			—
December 31, 2004		$	18.8		$	4.2		$	5.0		$	28.0		$	33.9		$	147.1

The following table details the 2005 activity by quarter:

		Employee termination costs			Lease and other contractual obligations			Facility exit costs and other			Total accrued liability			Non-cash charge			Total charge
December 31, 2004		$	18.8		$	4.2		$	5.0		$	28.0		$	33.9		$	—
Cash payments			(13.4	)		(0.2	)		(1.0	)		(14.6	)		—			—
Adjustments			3.3			0.1			—			3.4			(1.5	)		1.9
March 31, 2005			8.7			4.1			4.0			16.8			32.4			1.9
Cash payments			(5.7	)		(0.3	)		(2.5	)		(8.5	)		—			—
Adjustments			0.8			—			(0.7	)		0.1			6.7			6.8
June 30, 2005		$	3.8		$	3.8		$	0.8		$	8.4		$	39.1		$	8.7

The accrued restructuring liability is recorded in Accrued Liabilities in the accompanying consolidated balance sheet.

(d)

2005 restructuring:

In January 2005, we announced plans to further improve capacity utilization and accelerate margin improvements. These restructuring actions will include facility closures and a reduction in workforce, primarily targeting our higher-cost geographies where end-market demand has not recovered to the levels management requires to achieve sustainable profitability.

As of June 30, 2005, we have recorded termination costs related to approximately 2,000 employees, primarily manufacturing and plant employees. Approximately 100 of these employees have been terminated as of June 30, 2005 with the balance of the terminations to occur throughout 2005 and into 2006. Approximately 80% of employee terminations are in the Americas and 20% in Europe.

		Employee termination costs			Lease and other contractual obligations			Facility exit costs and other			Total accrued liability			Non-cash charge			Total charge
January 1, 2005		$	—		$	—		$	—		$	—		$	—		$	—
Provision			31.5			0.1			0.4			32.0			—			32.0
Cash payments			(2.6	)		(0.1	)		(0.4	)		(3.1	)		—			—
March 31, 2005			28.9			—			—			28.9			—			32.0
Provision			19.2			3.9			1.3			24.4			(0.2	)		24.2
Cash payments			(7.2	)		(0.2	)		(1.2	)		(8.6	)		—			—
June 30, 2005		$	40.9		$	3.7		$	0.1		$	44.7		$	(0.2	)	$	56.2

We expect to complete these restructuring actions throughout 2005 and into 2006. Cash outlays are funded from cash on hand.

The accrued restructuring liability is recorded in Accrued Liabilities in the accompanying consolidated balance sheet.

14

---

Restructuring summary:

We expect to incur restructuring charges of between $225.0 and $275.0 to be recorded throughout 2005 and into the first quarter of 2006. As of June 30, 2005, we have recorded restructuring charges totaling $63.9.

As of June 30, 2005, assets included $2.4 representing assets available-for-sale, primarily land and buildings in Asia and the Americas, as a result of the restructuring actions we implemented. We have programs underway to sell these assets.

(e)

Other:

In the fourth quarter of 2004, we recorded charges totaling $116.8 to reduce the net realizable value of notes and accounts receivables related to one of our customers, whose financial condition had significantly deteriorated. In the second quarter of 2005, this customer ceased operations and sold off certain assets. We recorded a recovery of $13.8 to reflect the estimated amounts recoverable from that customer.

8.     PENSION AND NON-PENSION POST-EMPLOYMENT BENEFIT PLANS:

We have recorded the following pension expense:

		Three months ended June 30						Six months ended June 30
		2004			2005			2004			2005
Pension plans		$	6.9		$	6.9		$	14.4		$	16.0
Other benefit plans			4.0			2.8			8.1			6.0
Total expense		$	10.9		$	9.7		$	22.5		$	22.0

9.     STOCK-BASED COMPENSATION AND OTHER STOCK-BASED PAYMENTS:

Effective January 1, 2003, we adopted the revised CICA Handbook Section 3870, "Stock-Based Compensation," which requires that a fair value method of accounting be applied to all stock-based compensation payments for both employees and non-employees. In accordance with the transitional provisions of Section 3870, we have prospectively applied the fair value method of accounting for stock option awards granted after January 1, 2003 and, accordingly, have recorded compensation expense. Prior to January 1, 2003, we accounted for our employee stock options using the settlement method and no compensation expense was recognized. For awards granted in 2002, the standard requires the disclosure of pro forma earnings and per share information as if we had accounted for employee stock options under the fair value method. The pro forma effect of awards granted prior to January 1, 2002 has not been included in the pro forma earnings and per share information.

The estimated fair value of the options is amortized to expense over the vesting period, on a straight-line basis, and was determined using the Black-Scholes option pricing model with the following weighted average assumptions:

		Three months ended June 30				Six months ended June 30
		2004		2005		2004		2005
Risk-free rate		3.9%		3.8% - 3.9%		3.0%		3.5% - 3.9%
Dividend yield		0.0%		0.0%		0.0%		0.0%
Volatility factor of the expected market price of the Company's shares		70.0%		53% - 68%		70.0%		48% - 68%
Expected option life (in years)		4.6		3.5 - 5.5		4.4		3.5 - 5.5
Weighted average grant date fair values of options issued		$10.63		$7.09		$9.85		$7.22

15

---

Compensation expense for the three and six months ended June 30, 2005 was $2.5 and $5.0 (three and six months ended June 30, 2004 — $2.1 and $3.7, respectively) relating to the fair value of options granted after January 1, 2003.

The pro forma disclosure relating to options granted in 2002 is as follows:

			Three months ended June 30						Six months ended June 30
			2004			2005			2004			2005
Net earnings (loss) as reported			$	(7.9	)	$	12.6		$	(20.0	)	$	1.0
Deduct: Stock-based compensation costs using fair value method				(1.8	)		(1.5	)		(4.2	)		(3.1	)
Pro forma net earnings (loss)			$	(9.7	)	$	11.1		$	(24.2	)	$	(2.1	)
Earnings (loss) per share:
	Basic — as reported		$	(0.04	)	$	0.06		$	(0.09	)	$	0.00
	Basic — pro forma		$	(0.04	)	$	0.05		$	(0.11	)	$	(0.01	)
	Diluted — as reported		$	(0.04	)	$	0.06		$	(0.09	)	$	0.00
	Diluted — pro forma		$	(0.04	)	$	0.05		$	(0.11	)	$	(0.01	)

Our stock plans are described in note 9 to the 2004 annual consolidated financial statements.

10.   SEGMENTED INFORMATION:

Our operations fall into one dominant industry segment, the electronics manufacturing services industry. We manage our operations, and accordingly determine our operating segments, on a geographic basis. The performance of geographic operating segments is monitored based on EBIAT (earnings/loss before interest and accretion on convertible debt, amortization of intangible assets, integration costs related to acquisitions, other charges, option expense and income taxes). Inter-segment transactions are reflected at market value. The following is a breakdown by reporting segment:

		Three months ended June 30						Six months ended June 30
		2004			2005			2004			2005
Revenue
Americas		$	1,036.4		$	821.4		$	1,897.9		$	1,640.3
Asia			921.5			1,092.9			1,723.7			2,058.3
Europe			452.5			384.2			881.9			792.9
Elimination of inter-segment revenue			(96.2	)		(47.8	)		(172.4	)		(90.2	)
		$	2,314.2		$	2,250.7		$	4,331.1		$	4,401.3

		Three months ended June 30						Six months ended June 30
		2004			2005			2004			2005
EBIAT
Americas		$	2.2		$	16.6		$	(3.7	)	$	31.3
Asia			30.9			44.7			52.4			81.1
Europe			0.7			(3.3	)		(4.3	)		(4.5	)
			33.8			58.0			44.4			107.9
Net interest and accretion charges			(8.4	)		(11.7	)		(14.9	)		(22.8	)
Amortization of intangible assets			(7.7	)		(7.0	)		(14.9	)		(14.2	)
Option expense			(2.1	)		(2.5	)		(3.7	)		(5.0	)
Integration costs related to acquisitions			(0.4	)		—			(0.4	)		(0.3	)
Other charges (note 7)			(18.6	)		(15.1	)		(29.5	)		(47.0	)
Earnings (loss) before income taxes		$	(3.4	)	$	21.7		$	(19.0	)	$	18.6

16

---

		As at June 30
		2004			2005
Total assets
Americas		$	2,249.2		$	1,853.3
Asia			2,303.0			2,412.2
Europe			1,150.5			922.9
		$	5,702.7		$	5,188.4
Goodwill
Americas		$	241.8		$	—
Asia			885.0			872.9
Europe			76.0			—
		$	1,202.8		$	872.9

11.   WEIGHTED AVERAGE SHARES OUTSTANDING AND PER SHARE CALCULATIONS:

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

				Three months ended June 30						Six months ended June 30
				2004			2005			2004			2005
Numerator:
	Net earnings (loss) attributable to common shareholders			$	(7.9	)	$	12.6		$	(20.0	)	$	1.0
Denominator (in millions):
	Weighted average shares — basic				224.6			226.0			218.9			226.4
	Effect of dilutive securities:(1)(2)
		Employee stock options and warrants			—			1.5			—			1.8
		Convertible debt			—			—			—			—
	Weighted average shares — diluted				224.6			227.5			218.9			228.2
Earnings (loss) per share:
	Basic			$	(0.04	)	$	0.06		$	(0.09	)	$	0.00
	Diluted			$	(0.04	)	$	0.06		$	(0.09	)	$	0.00

---

(1)

Excludes the effect of all options, warrants and convertible debt in 2004 as they are anti-dilutive due to the loss reported in these periods.



(2)

Excludes the effect of the convertible debt in 2005 as it is anti-dilutive.

12.   SUPPLEMENTAL CASH FLOW INFORMATION:

			Three months ended June 30						Six months ended June 30
			2004			2005			2004			2005
Paid during the period:
Interest			$	6.1		$	3.6		$	8.1		$	5.5
Taxes			$	2.1		$	8.0		$	4.0		$	14.5
Non-cash financing activities:
	Shares issued for acquisition of MSL		$	—		$	—		$	245.5		$	—
	Options issued for acquisition of MSL		$	—		$	—		$	15.2		$	—
	Warrants issued for acquisition of MSL		$	—		$	—		$	8.9		$	—

17

---

13.   HEDGING TRANSACTIONS:

In connection with the issuance of our $500.0 principal amount of Senior Subordinated Notes in June 2004, we entered into interest rate swap agreements to hedge the fair value of the Notes, by swapping the fixed rate of interest for a variable interest rate. The notional amount of the agreements is $500.0. The agreements were effective June 2004 and mature July 2011. See note 4(b).

Payments or receipts under the swap agreements are recognized as adjustments to interest expense on long-term debt. The fair value of the interest rate swap agreements at June 30, 2005 was an unrealized gain of $15.7.

14.   GUARANTEES AND CONTINGENCIES:

Contingent liabilities in the form of letters of credit, letters of guarantee, and surety and performance bonds are provided to various third parties. These guarantees cover various payments, including customs and excise taxes, utility commitments and certain bank guarantees. At June 30, 2005, these liabilities, including guarantees of employee share purchase loans, amounted to $83.6 (March 31, 2005 — $65.6).

In addition to the above guarantees, we have also provided routine indemnifications, whose terms range in duration and often are not explicitly defined. These may include indemnifications against adverse effects due to changes in tax laws and patent infringements by third parties. The maximum amounts payable with respect to these indemnifications cannot reasonably be estimated. In some cases, we have recourse against other parties to mitigate our risk of loss from these indemnifications. Historically, we have not made significant payments relating to these types of indemnifications.

In the normal course of our operations, we are subject to litigation and claims from time to time. Management believes that adequate provisions have been recorded in the accounts where required. Although it is not always possible to estimate the extent of potential costs, if any, management believes that the ultimate resolution of such contingencies would not have a material adverse effect on our results of operations, financial position or liquidity.

We are subject to tax audits by local taxing authorities. International taxation authorities could challenge the validity of our inter-company financing and transfer pricing policies which generally involve subjective areas of taxation and a significant degree of judgment. If any of these taxation authorities are successful in challenging our financing or transfer pricing policies, our income tax expense may be adversely affected and we could also be subjected to interest and penalty charges. In connection with ongoing tax audits in the United States, taxing authorities have assessed significant deficiencies and related interest and penalties arising from inter-company transactions. We believe we have substantial defenses and have adequately accrued for potential losses. However, there can be no assurance as to the final resolution of these audits and any resulting proceedings, and if these audits and proceedings are determined adversely to us the amounts we may be required to pay may be material.

15.   COMPARATIVE INFORMATION:

We have reclassified certain prior period information to conform to the current periods' presentation.

18

---

16.   SUBSEQUENT EVENTS:

In June 2005, we commenced an option exchange program to eligible employees under our long-term incentive and certain other stock option plans. This program is part of a plan to restructure our long-term incentive arrangements and to reduce the market overhang associated with out-of-the-money options. Eligible employees may voluntarily tender certain out-of-the-money options for $1.00 in cash for each option surrendered. The expected cost of this program is between $6 and $7, which will be paid by August 2005.

In July 2005, we commenced a tender offer to purchase for cash the outstanding LYONs on August 2, 2005. See note 5.

19

---

QuickLinks

Exhibit 99.1
CONSOLIDATED BALANCE SHEETS (in millions of U.S. dollars) (unaudited)
CONSOLIDATED STATEMENTS OF OPERATIONS AND DEFICIT (in millions of U.S. dollars, except per share amounts) (unaudited)
CONSOLIDATED STATEMENTS OF CASH FLOWS (in millions of U.S. dollars) (unaudited)
CELESTICA INC. NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (in millions of U.S. dollars, except per share amounts) (unaudited)