----

----

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

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

|   | Indiana                                                        |   | 35-0225010                           |   |
|--------|----------------------------------------------------------------|--------|--------------------------------------|--------|
|   | (State or other jurisdiction of incorporation or organization) |   | (IRS Employer Identification Number) |   |

|   | 905 West Boulevard North,                |   |       |   |
|--------|------------------------------------------|--------|------------|--------|
|   | Elkhart, IN                              |   | 46514      |   |
|   | (Address of principal executive offices) |   | (Zip Code) |   |

|   | Title of Each Class             |   | Name of Each Exchange on Which Registered |   |
|--------|---------------------------------|--------|-------------------------------------------|--------|
|   | Common stock, without par value |   | New York Stock Exchange                   |   |

----

| (1)  | Portions of the 2010 Annual Report to Shareholders are incorporated herein by reference in Parts I and II. |
|-----------|------------------------------------------------------------------------------------------------------------|

| (2) | Portions of the Proxy Statement to be filed for the annual meeting of shareholders to be held on or about May 25, 2011 are incorporated by reference in Part III. |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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TABLE OF CONTENTS

| ITEM             |                                                                                                               | PAGE   |
|------------------|--------------------------------------------------------------------------------------------------------------------|--------|
|             |                                                                                                               |   |
|             | PART I                                                                                                             |   |
|             |                                                                                                               |   |
| 1.               | Business                                                                                                           | 3      |
| 1A.              | Risk Factors                                                                                                       | 8      |
| 1B.              | Unresolved Staff Comments                                                                                          | 13     |
| 2.               | Properties                                                                                                         | 14     |
| 3.               | Legal Proceedings                                                                                                  | 15     |
| 4.               | [Removed and Reserved]                                                                                             | 15     |
|             |                                                                                                               |   |
|             | PART II                                                                                                            |   |
|             |                                                                                                               |   |
| 5.               | Market for Registrant’s Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities | 16     |
| 6.               | Selected Financial Data                                                                                            | 17     |
| 7.               | Management’s Discussion and Analysis of Financial Condition and Results of Operations                        | 18     |
| 7A.              | Quantitative and Qualitative Disclosures About Market Risk                                                         | 18     |
| 8.               | Financial Statements and Supplementary Data                                                                        | 18     |
| 9.               | Changes in and Disagreements With Accountants on Accounting and Financial Disclosure                               | 18     |
| 9A.              | Controls and Procedures                                                                                            | 18     |
| 9B.              | Other Information                                                                                                  | 18     |
|             |                                                                                                               |   |
|             | PART III                                                                                                           |   |
|             |                                                                                                               |   |
| 10.              | Directors, Executive Officers and Corporate Governance                                                             | 19     |
| 11.              | Executive Compensation                                                                                             | 19     |
| 12.              | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters                     | 19     |
| 13.              | Certain Relationships and Related Transactions, and Director Independence                                          | 19     |
| 14.              | Principal Accountant Fees and Services                                                                             | 19     |
|             |                                                                                                               |   |
|             | PART IV                                                                                                            |   |
|             |                                                                                                               |   |
| 15.              | Exhibits and Financial Statements Schedules                                                                        | 20     |
|             |                                                                                                               |   |
| SIGNATURES  | 22                                                                                                                 |

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Table of Contents

| Item 1. | Business |
|---------|----------|

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Table of Contents

|                               |   | EMS    |    | Components & Sensors |    | Total  |    |
|------------------------------------|--------|--------|---------|--------------------------|---------|--------|---------|
| (As a % of consolidated net sales) |   | 2010   |    | 2009                     |    | 2008   |    | 2010 |   | 2009 |   | 2008 |   | 2010 |   | 2009 |   | 2008 |   |
| Markets                            |   |   |    |                     |    |   |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Automotive                         |   |   | — | %                        | — | %      | — | % | 32 | % | 27 | % | 25 | % | 32 | % | 27 | % | 25 | % |
| Communications                     |   |   | 16      | %                        | 14      | %      | 16      | % | 7 | % | 7 | % | 7 | % | 23 | % | 21 | % | 23 | % |
| Computer                           |   |   | 2       | %                        | 5       | %      | 12      | % | 2 | % | 1 | % | 2 | % | 4 | % | 6 | % | 14 | % |
| Medical                            |   |   | 5       | %                        | 8       | %      | 6       | % | 2 | % | 1 | % | 1 | % | 7 | % | 9 | % | 7 | % |
| Industrial                         |   |   | 10      | %                        | 10      | %      | 12      | % | 5 | % | — | % | — | % | 15 | % | 10 | % | 12 | % |
| Defense and Aerospace              |   |   | 15      | %                        | 20      | %      | 11      | % | 2 | % | 2 | % | 1 | % | 17 | % | 22 | % | 12 | % |
| Other                              |   |   | 1       | %                        | — | %      | 1       | % | 1 | % | 5 | % | 6 | % | 2 | % | 5 | % | 7 | % |
| % of consolidated net sales        |   |   | 49      | %                        | 57      | %      | 58      | % | 51 | % | 43 | % | 42 | % | 100 | % | 100 | % | 100 | % |

| Product Description                                                               | AutomotiveMarket | Communications Market | Computer Market | Medical Market | Industrial Market | Defense and AerospaceMarket | Other Markets |
|-----------------------------------------------------------------------------------|------------------|-----------------------|-----------------|----------------|-------------------|-----------------------------|---------------|
| EMS:                                                                              |
| Integrated Interconnect Systems and Backpanels, including Final Assembly and Test |             | Ÿ                | Ÿ          | Ÿ         | Ÿ            | Ÿ                      | Ÿ        |
| Complex Printed Circuit Board Assemblies                                          |             | Ÿ                | Ÿ          | Ÿ         | Ÿ            | Ÿ                      | Ÿ        |
| Components and Sensors:                                                           |
| Ceramic Filters and Duplexers                                                     | Ÿ           | Ÿ                |            |           |              | Ÿ                      | Ÿ        |
| Quartz Crystals, Clocks, Precision Oscillators and Frequency Modules              |             | Ÿ                | Ÿ          | Ÿ         | Ÿ            | Ÿ                      | Ÿ        |
| Sensors and Actuators                                                             | Ÿ           |                  |            |           |              |                        | Ÿ        |
| Resistor Networks                                                                 |             | Ÿ                | Ÿ          |           | Ÿ            |                        | Ÿ        |
| DIP Switches and Potentiometers                                                   |             | Ÿ                | Ÿ          |  Ÿ   | Ÿ            |  Ÿ                | Ÿ        |
| Piezoelectric and Piezoceramics Products                                          |             |                  | Ÿ          | Ÿ         | Ÿ            | Ÿ                      | Ÿ        |
| Electromagnetic Interference and Radio Frequency Interference Filters             |             | Ÿ                |            |           | Ÿ            | Ÿ                      | Ÿ        |

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| EMS:                    |   | Power supplies and converters, prefabricated steel, printed circuit boards, passive electronic components and semiconductors, integrated circuits, connectors, cables, and modules.                                                                                                                                                                                 |
|-------------------------|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                    |   |                                                                                                                                                                                                                                                                                                                                                                |
| Components and Sensors: |   | Conductive inks and contactor, passive electronic components, integrated circuits and semiconductors, certain rare earth elements ("REE"), ceramic components, plastic components, molding compounds, printed circuit boards and assemblies, quartz blanks and crystals, wire harness assemblies, copper, brass, and steel-based raw materials and components. |

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Table of Contents

| ($ in millions)        |   | January 30, 2011 |   |   | January 31, 2010 |   |
|------------------------|--------|------------------|--------|--------|------------------|--------|
| EMS                    |   | $                | 99.3   |   |             | $      | 49.9 |   |
| Components and Sensors |   |             | 38.9   |   |             |   | 38.4 |   |
| Total                  |   | $                | 138.2  |   |             | $      | 88.3 |   |

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Risk Factors

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Table of Contents

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Table of Contents

Unresolved Staff Comments 

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Table of Contents

Properties

| Manufacturing Facilities      | Square Footage |   | Owned/Leased | Segment                        |
|-------------------------------|---------------------|--------|--------------|--------------------------------|
| Albuquerque, New Mexico       | 91,000              |   | Leased       | Components and Sensors         |
| Ayutthya, Thailand            | 40,000              |   | Owned (1)    | EMS                            |
| Elkhart, Indiana              | 319,000             |   | Owned        | Components and Sensors         |
| Glasgow, Scotland             | 75,000              |   | Owned        | Components and Sensors and EMS |
| Glasgow, Scotland             | 37,000              |   | Leased       | Components and Sensors and EMS |
| Brugg, Switzerland            | 21,500              |   | Leased       | Components and Sensors         |
| Kaohsiung, Taiwan             | 133,000             |   | Owned (2)    | Components and Sensors         |
| Londonderry, New Hampshire    | 54,000              |   | Leased       | EMS                            |
| Matamoros, Mexico             | 51,000              |   | Owned        | Components and Sensors and EMS |
| Matamoros, Mexico             | 59,900              |   | Leased       | EMS                            |
| Moorpark, California          | 115,500             |   | Leased       | EMS                            |
| Nogales, Mexico               | 67,000              |   | Leased       | Components and Sensors         |
| Ostrava, Czech Republic       | 60,000              |   | Leased       | Components and Sensors         |
| San Jose, California          | 78,800              |   | Leased       | EMS                            |
| Singapore                     | 159,000             |   | Owned (3)    | Components and Sensors         |
| Streetsville, Ontario, Canada | 112,000             |   | Owned        | Components and Sensors         |
| Tianjin, China                | 225,000             |   | Owned (4)    | Components and Sensors and EMS |
| Tucson, Arizona               | 48,000              |   | Owned        | Components and Sensors         |
| Zhongshan, China              | 72,400              |   | Leased       | Components and Sensors         |
| Total manufacturing           | 1,819,100           |   |         |                           |
|                          |                |   |         |                           |

| (1) | The land and building are collateral for a credit facility. |
|-----|-------------------------------------------------------------|

| (2) | Ground lease through 2017; restrictions on use and transfer apply. |
|-----|--------------------------------------------------------------------|

| (3) | Ground lease through 2039; restrictions on use and transfer apply. |
|-----|--------------------------------------------------------------------|

| (4) | Land Use Rights Agreement through 2050 includes transfer, lease and mortgage rights. |
|-----|--------------------------------------------------------------------------------------|

| Non-Manufacturing Facilities | Square Footage |   | Owned/Leased | Description                         | Segment                        |
|------------------------------|----------------|--------|--------------|-------------------------------------|--------------------------------|
| Berne, Indiana               | 249,000        |   | Owned        | Leased to tenant                    | Components and Sensors         |
| Lisle, Illinois         | 37,200         |   | Leased       | Administrative offices and research | Components and Sensors and EMS |
| Brownsville, Texas           | 85,000         |   | Owned        | Idle facility                       | Components and Sensors         |
| Burbank, California          | 2,900          |   | Leased       | Idle facility                       | Components and Sensors         |
| Elkhart, Indiana             | 93,000         |   | Owned        | Administrative offices and research | Components and Sensors and EMS |
| Haryana, India               | 2,500          |   | Leased       | Sales office                        | Components and Sensors         |
| Nagoya, Japan                | 800            |   | Leased       | Sales office                        | Components and Sensors         |
| Poway, California            | 45,000         |   | Leased       | Sublet to tenant                    | EMS                            |
| Sandwich, Illinois           |           |   | Owned        | Land only                           | Components and Sensors         |
| Shanghai, China              | 1,200          |   | Leased       | Sales office                        | Components and Sensors         |
| Auburn Hills, Michigan       | 1,600          |   | Leased       | Sales office                        | Components and Sensors         |
| Taipei, Taiwan               | 1,400          |   | Leased       | Sales office                        | Components and Sensors         |
| Yokohama, Japan              | 1,400          |   | Leased       | Sales office                        | Components and Sensors         |
| Total non-manufacturing      | 521,000        |   |         |                                |                           |

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| Item  3. | Legal Proceedings |
|--------------------|-------------------|

| Item 4. | [Removed and Reserved] |
|---------|------------------------|

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Table of Contents

| Item 5. | Market for Registrant’s Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities |
|---------|--------------------------------------------------------------------------------------------------------------------|

|        |   |     |   |   |    |   |   |               |   |   | Net Earnings/(Loss) |   |
|-------------|--------|----------|--------|--------|---------|--------|--------|--------------------|--------|--------|---------------------|--------|
|        |   | High (1) |   |   | Low (1) |   |   | Dividends Declared |   |   | Basic               |   |   | Diluted |   |
| 2010        |   |     |   |   |    |   |   |               |   |   |                |   |   |   |   |
| 4th quarter |   | $        | 11.47  |   |    | $      | 9.34   |               |   | $      | 0.03                |   |   | $ | 0.14 |   |   | $ | 0.14 |   |
| 3rd quarter |   |     | 11.84  |   |    |   | 6.81   |               |   |   | 0.03                |   |   |   | 0.20 |   |   |   | 0.20 |   |
| 2nd quarter |   |     | 11.84  |   |    |   | 8.85   |               |   |   | 0.03                |   |   |   | 0.17 |   |   |   | 0.17 |   |
| 1st quarter |   |     | 10.49  |   |    |   | 6.81   |               |   |   | 0.03                |   |   |   | 0.13 |   |   |   | 0.13 |   |
|  2009  |   |     |   |   |    |   |   |               |   |   |                |   |   |   |   |   |   |   |   |   |
| 4th quarter |   | $        | 10.38  |   |    | $      | 7.50   |               |   | $      | 0.03                |   |   | $ | 0.12 |   |   | $ | 0.12 |   |
| 3rd quarter |   |     | 10.62  |   |    |   | 6.11   |               |   |   | 0.03                |   |   |   | 0.13 |   |   |   | 0.13 |   |
| 2nd quarter |   |     | 7.00   |   |    |   | 3.50   |               |   |   | 0.03                |   |   |   | (0.21 | ) |   |   | (0.21 | ) |
| 1st quarter |   |     | 6.47   |   |    |   | 2.11   |               |   |   | 0.03                |   |   |   | (1.06 | ) |   |   | (1.06 | ) |

| (1)   | The market prices of CTS common stock presented reflect the highest and lowest sales prices on the New York Stock Exchange for each quarter of the last two years. |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                                        |   | (a)Total Number of Shares Purchased |    | (b)Average Price Paid per Share |   | (c)Total Numberof SharesPurchased as part of Plans or Program |   | (d)Maximum Number  of Shares That May Yet Be Purchased Under the Plans or Programs(1) |    |
|---------------------------------------------|--------|-------------------------------------|---------|---------------------------------|--------|--------------------------------------------------------------------|--------|-------------------------------------------------------------------------------------------------|---------|
| Balance at October 2, 2010                  |   |                                |    |                            |   |                                                               |   |                                                                                            |    |   |   | 977,500 |   |
| October 3, 2010 – October 30, 2010    |   |                                | — |                            |   | —                                                            |   |                                                                                            | — |   |   | 977,500 |   |
| October 31, 2010 – November 27, 2010  |   |                                | — |                            |   | —                                                            |   |                                                                                            | — |   |   | 977,500 |   |
| November 28, 2010 – December 31, 2010 |   |                                | — |                            |   | —                                                            |   |                                                                                            | — |   |   | 977,500 |   |
|                                        |   |                                |    |                            |   |                                                               |   |                                                                                            |    |   |   |   |   |

| (1)   | In May 2008, CTS’ Board of Directors authorized a program to repurchase up to one million shares of its common stock in the open market.  The authorization has no expiration date. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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Table of Contents

Item 6. 

|                                                                                            |   |   | 2010       |   | % ofSales |   |   |   | 2009       |    | % ofSales  |    |   |   | 2008             |    |   | % ofSales    |   |   | 2007       |   |   | % ofSales   |   |   | 2006        |   |   | % ofSales   |   |
|-------------------------------------------------------------------------------------------------|--------|--------|------------|--------|-----------|--------|--------|--------|------------|---------|------------|---------|--------|--------|------------------|---------|--------|--------------|--------|--------|------------|--------|--------|-------------|--------|--------|-------------|--------|--------|-------------|--------|
| Summary of Operations                                                                           |   |   |       |   |      |   |   |   |       |    |       |    |   |   |             |    |   |         |   |   |       |   |   |        |   |   |        |   |   |        |   |
| Net sales                                                                                       |   | $      | 552,641    |   | 100.0     |   |   | $      | 498,982    |    | 100.0      |    |   | $      | 691,707          |    |   |   100.0 |   | $      | 685,945    |   |   |  100.0 |   | $      | 655,614     |   |   |  100.0 |   |
|    Cost of goods sold                                                            |   |   | 432,731    |   | 78.3      |   |   |   | 400,142    |    | 80.2       |    |   |   | 554,634          |    |   |   80.2  |   |   | 553,253    |   |   | 80.7        |   |   | 534,784     |   |   | 81.6        |   |
|    Selling, general and administrative      expenses(1) |   |   | 69,805     |   | 12.6      |   |   |   | 64,129     |    | 12.9       |    |   |   | 78,755           |    |   |   11.4  |   |   | 78,999     |   |   | 11.5        |   |   | 65,578      |   |   | 10.0        |   |
|    Research and development expenses                                             |   |   | 18,313     |   | 3.3       |   |   |   | 14,154     |    | 2.8        |    |   |   | 18,306           |    |   |   2.6   |   |   | 15,896     |   |   | 2.3         |   |   | 15,873      |   |   | 2.4         |   |
|    Amortization of intangible assets                                             |   |   | 2,505      |   | 0.5       |   |   |   | 2,990      |    | 0.6        |    |   |   | 3,615            |    |   |   0.5   |   |   | 3,121      |   |   | 0.5         |   |   | 3,193       |   |   | 0.5         |   |
|    Restructuring and goodwill     impairment charges         |   |   | 1,444      |   | 0.3       |   |   |   | 35,396     |    | 7.1        |    |   |   | 5,567            |    |   |   0.8   |   |   | 2,401      |   |   | 0.4         |   |   | 3,368       |   |   | 0.5         |   |
|    Operating earnings/(loss)                                                     |   |   | 27,843     |   | 5.0       |   |   |   | (17,829    | )  | (3.6       | )  |   |   | 30,830           |    |   |   4.5   |   |   | 32,275     |   |   | 4.7         |   |   | 32,818      |   |   | 5.0         |   |
| Other income/(expense) — net                                                              |   |   | 183        |   | −   |   |   |   | (2,585     | )       | (0.5       | )  |   |   | (4,575           | )       |   |   (0.7  | )      |   | (2,241     | )      |   | (0.3        | )      |   | (4,424      | )      |   | (0.7   | )      |
|    Earnings/(loss) before income taxes                                           |   |   | 28,026     |   | 5.0       |   |   |   | (20,414    | )       |  (4.1 | )       |   |   | 26,255           |    |   | 3.8          |   |   | 30,034     |   |   | 4.4         |   |   | 28,394      |   |   | 4.3    |   |
| Income tax expense/(benefit)                                                                    |   |   | 5,988      |   | 1.0       |   |   |   | 13,636     |    | 2.7        |    |   |   | (1,807           | )       |   | (0.3         | )      |   | 6,087      |   |   | 0.9         |   |   | 5,560       |   |   | 0.8    |   |
|     Net earnings/(loss)                                                     |   |   | 22,038     |   | 4.0       |   |   |   | (34,050    | )       | (6.8       | )  |   |   | 28,062           |    |   |   4.1   |   |   | 23,947     |   |   | 3.5         |   |   | 22,834      |   |   | 3.5    |   |
| Retained earnings — beginning of Year                                                |   |   | 317,582    |   |      |   |   |   | 355,694    |    |       |    |   |   | 331,675          |    |   |         |   |   | 311,962    |   |   |        |   |   | 293,433     |   |   |        |   |
| Dividends declared                                                                              |   |   | (4,096     | )      |      |   |   |   | (4,062     | )       |       |    |   |   | (4,043           | )  |   |         |   |   | (4,234     | )      |   |        |   |   | (4,305      | )      |   |        |   |
| Retained earnings—end of year                                                             |   | $      | 335,524    |   |      |   |   | $      | 317,582    |    |       |    |   | $      | 355,694          |    |   |         |   | $      | 331,675    |   |   |        |   | $      | 311,962     |   |   |        |   |
| Net earnings/(loss) per share:                                                             |   |   |       |   |      |   |   |   |       |    |       |    |   |   |             |    |   |         |   |   |       |   |   |        |   |   |        |   |   |        |   |
| Basic:                                                                                          |   | $      | 0.65       |   |      |   |   | $      | (1.01      | )       |       |    |   | $      | 0.83        |    |   |         |   | $      | 0.67       |   |   |        |   | $      | 0.64        |   |   |        |   |
| Diluted:                                                                                        |   | $      | 0.63       |   |      |   |   | $      | (1.01      | )       |       |    |   | $      | 0.81        |    |   |         |   | $      | 0.66       |   |   |        |   | $      | 0.63        |   |   |        |   |
| Average basic shares outstanding (000s)                                                         |   |   | 34,090     |   |      |   |   |   | 33,823     |    |       |    |   |   | 33,728           |    |   |         |   |   | 35,498     |   |   |        |   |   | 35,826      |   |   |        |   |
| Average diluted shares outstanding (000s)                                                       |   |   | 34,849     |   |      |   |   |   | 33,823     |    |       |    |   |   | 37,864           |    |   |         |   |   | 39,970     |   |   |        |   |   | 40,228      |   |   |        |   |
| Cash dividends per share                                                                        |   | $      | 0.12       |   |      |   |   | $      | 0.12       |    |       |    |   | $      | 0.12             |    |   |         |   | $      | 0.12       |   |   |        |   | $      | 0.12        |   |   |        |   |
| Capital expenditures                                                                            |   |   | 13,271     |   |      |   |   |   | 6,537      |    |       |    |   |   | 17,647           |    |   |         |   |   | 16,058     |   |   |        |   |   | 15,787      |   |   |        |   |
| Depreciation and amortization                                                                   |   |   | 17,565     |   |      |   |   |   | 19,531     |    |       |    |   |   | 24,178           |    |   |         |   |   | 22,818     |   |   |        |   |   | 24,896      |   |   |        |   |
| Financial Position at Year End                                                                  |   |   |       |   |      |   |   |   |       |    |       |    |   |   |             |    |   |         |   |   |       |   |   |        |   |   |        |   |   |        |   |
| Current assets                                                                                  |   | $      | 266,655    |   |      |   |   | $      | 193,735    |    |       |    |   | $      | 225,842          |    |   |         |   | $      | 250,840    |   |   |        |   | $      | 227,620     |   |   |        |   |
| Current liabilities                                                                             |   |   | 120,100    |   |      |   |   |   | 90,516     |    |       |    |   |   | 113,241          |    |   |         |   |   | 128,919    |   |   |        |   |   | 125,681     |   |   |        |   |
| Current ratio                                                                                   |   |   | 2.2 to 1   |   |      |   |   |   | 2.1 to 1   |    |       |    |   |   | 2.0 to 1         |    |   |         |   |   | 1.9 to 1   |   |   |        |   |   | 1.8 to 1    |   |   |        |   |
| Working capital                                                                                 |   | $      | 146,555    |   |      |   |   | $      | 103,219    |    |       |    |   | $      | 112,601          |    |   |         |   | $      | 121,921    |   |   |        |   | $      | 101,939     |   |   |        |   |
| Inventories, net                                                                                |   |   | 76,885     |   |      |   |   |   | 54,348     |    |       |    |   |   | 70,867           |    |   |         |   |   | 73,778     |   |   |        |   |   | 60,543      |   |   |        |   |
| Net property, plant and equipment                                                          |   |   | 78,213     |   |      |   |   |   | 81,120     |    |       |    |   |   | 90,756           |    |   |         |   |   | 92,825     |   |   |        |   |   | 96,468      |   |   |        |   |
| Total assets                                                                                    |   |   | 482,584    |   |      |   |   |   | 407,657    |    |       |    |   |   | 488,442          |    |   |         |   |   | 543,615    |   |   |        |   |   | 527,699     |   |   |        |   |
| Short-term notes payable                                                                        |   |   | −    |   |      |   |   |   | −    |    |       |    |   |   | −          |    |   |         |   |   | 1,000      |   |   |        |   |   | 5,425       |   |   |        |   |
| Long-term debt                                                                                  |   |   | 70,000     |   |      |   |   |   | 50,400     |    |       |    |   |   | 79,988           |    |   |         |   |   | 68,342     |   |   |        |   |   | 54,628      |   |   |        |   |
| Long-term obligations, including   long-term debt                                |   |   | 88,234     |   |      |   |   |   | 69,687     |    |       |    |   |   | 97,728           |    |   |         |   |   | 88,332     |   |   |        |   |   | 79,598      |   |   |        |   |
| Shareholders’ equity                                                                      |   |   | 274,250    |   |      |   |   |   | 247,454    |    |       |    |   |   | 277,473          |    |   |         |   |   | 326,366    |   |   |        |   |   | 322,607     |   |   |        |   |
| Common shares outstanding (000s)                                                                |   |   | 34,197     |   |      |   |   |   | 33,893     |    |       |    |   |   | 33,711           |    |   |         |   |   | 34,313     |   |   |        |   |   | 35,823      |   |   |        |   |
| Equity (book value) per share                                                                   |   | $      | 8.02       |   |      |   |   | $      | 7.30       |    |       |    |   | $      | 8.23             |    |   |         |   | $      | 9.51       |   |   |        |   | $      | 9.01        |   |   |        |   |
|                                                                                            |   |   |       |   |      |   |   |   |       |    |       |    |   |   |             |    |   |         |   |   |       |   |   |        |   |   |        |   |   |        |   |
| Stock price range                                                                               |   | $      | 11.84-6.81 |   |      |   |   | $      | 10.62-2.11 |    |       |    |   | $      |  13.99-3.99 |    |   |         |   | $      | 16.33-9.87 |   |   |        |   | $      | 16.23-11.06 |   |   |        |   |

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Table of Contents

Item 7. 

| Item 7A. | Quantitative and Qualitative Disclosures About Market Risk |
|----------|------------------------------------------------------------|

| Item 8. | Financial Statements and Supplementary Data |
|---------|---------------------------------------------|

Item 9.

| Item 9A. | Controls and Procedures |
|----------|-------------------------|

| Item 9B. | Other Information |
|----------|-------------------|

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Table of Contents

| Item 10. | Directors, Executive Officers and Corporate Governance |
|----------|--------------------------------------------------------|

| Name                   | Age | Positions and Offices                                                               |
|------------------------|-----|-------------------------------------------------------------------------------------|
| Vinod M. Khilnani      | 58  | Chairman of the Board, President and Chief Executive Officer                        |
| Donald R. Schroeder    | 62  | Executive Vice President                                                            |
| Donna L. Belusar       | 50  | Senior Vice President and Chief Financial Officer                                   |
| Richard G. Cutter, III | 64  | Vice President, Law and Business Affairs, Corporate Secretary                       |
| Thomas A. Kroll        | 56  | Vice President and Controller                                                       |
| Dennis P. Thornton     | 49  | Senior Vice President and General Manager of CTS Electronic Manufacturing Solutions |

|   | Vinod M. Khilnani – 58 – Chairman of the Board, President and Chief Executive Officer – was designated Chairman of the Board effective May 27, 2009 and elected President and Chief Executive Officer on July 2, 2007.  Prior to accepting this position, Mr. Khilnani held the position of Senior Vice President and Chief Financial Officer since 2001. |
|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | Donald R. Schroeder – 62 – Executive Vice President – was named Executive Vice President effective February 1, 2011.  Prior to this, Mr. Schroeder was named Executive Vice President and General Manager of CTS Electronic Manufacturing Solutions from April 10, 2010.  Mr. Schroeder served as Executive Vice President and General Manager of CTS Electronic Components from January 1, 2009.  Prior to this, Mr. Schroeder served as Executive Vice President and President of CTS Electronics Manufacturing Solutions.  From December 2000 to February 2005, Mr. Schroeder served as Executive Vice President and Chief Technology Officer.  He has held positions of increasing responsibility with CTS since 1972.  Mr. Schroeder announced his retirement effective June 2011. |
|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | Donna L. Belusar – 50- Senior Vice President and Chief Financial Officer – was elected Senior Vice President and Chief Financial Officer on January 21, 2008.  Prior to joining CTS, Ms. Belusar was Executive Vice President of Finance, Global Financing Division of IBM Corporation.  During her tenure at IBM, Ms. Belusar held positions of increasing responsibility from 1982 until joining CTS. |
|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | Richard G. Cutter – 64 – Vice President, Law and Business Affairs, Corporate Secretary – was named Vice President, Law and Business Affairs, Corporate Secretary effective January 1, 2011.  Prior to this, Mr. Cutter was Vice President, Secretary and General Counsel effective December 31, 2001.  Prior to this, Mr. Cutter was Vice President, Assistant Secretary and General Counsel since September 2000. |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | Thomas A. Kroll – 56 – Vice President and Controller – was elected Vice President and Controller on October 31, 2002.  Prior to this, Mr. Kroll served as Controller Group Accounting since joining CTS in November 2000. |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | Dennis P. Thornton ­­– 49 – Senior Vice President – was elected Senior Vice President and General Manager of CTS Electronic Manufacturing Solutions effective February 1, 2011.  Mr. Thornton was elected Vice President of CTS Corporation effective December 3, 2009.  Prior to this, Mr. Thornton served as General Manager for our Automotive Products SBU since joining CTS in 2006. |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| Item 11. | Executive Compensation |
|----------|------------------------|

| Item 12. | Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters |
|----------|------------------------------------------------------------------------------------------------|

| Item 13. | Certain Relationships and Related Transactions, and Director Independence |
|----------|---------------------------------------------------------------------------|

| Item 14. | Principal Accountant Fees and Services |
|----------|----------------------------------------|

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Table of Contents

| Item 15. | Exhibits and Financial Statements Schedules |
|----------|---------------------------------------------|

| (a) (3) | Exhibits |
|---------|----------|

| (3)(i) | Amended and Restated Articles of Incorporation (incorporated by reference to Exhibit 5 to the Current Report on Form 8-K, filed with the SEC on September 1, 1998). |
|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (3)(ii) | Amended and Restated Bylaws (incorporated herein by reference to Exhibit 3 to the Current Report on Form 8-K, filed with the SEC on February 8, 2010). |
|---------|--------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(a) | Form of Director and Officer Indemnification Agreement (incorporated herein by reference to Exhibit 10.1 to the Current Report on Form 8-K, filed with the SEC on November 12, 2008).* |
|---------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(b) | CTS Corporation Stock Retirement Plan for Non-Employee Directors, effective April 30, 1990, as amended (incorporated by reference to Exhibit (10)(a) to the Quarterly Report on Form 10-Q for the quarter ended March 30, 2003, filed with the SEC on April 23, 2003).* |
|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(c) | Amendment to the CTS Corporation Stock Retirement Plan for Non-Employee Directors, dated as of December 1, 2004 (incorporated by reference to Exhibit (10)(j) to the Annual Report on Form 10-K for the year ended December 31, 2004, filed with the SEC on March 4, 2005). |
|---------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(d) | CTS Corporation Pension Plan (formerly known as the CTS Corporation Salaried Employees’ Pension Plan) (incorporated by reference to Exhibit (10)(t) to the Annual Report on Form 10-K for the year ended December 31, 2002, filed with the SEC on February 14, 2003).* |
|---------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(e) | Amendments to the CTS Corporation Pension Plan (formerly known as the CTS Corporation Salaried Employees’ Pension Plan) (incorporated by reference to Exhibit 10(b) to the Quarterly Report on Form 10-Q for the quarter ended June 29, 2003, filed with the SEC on July 25, 2003).* |
|---------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(f) | CTS Corporation 2004 Omnibus Long-term Incentive Plan and Incentive Stock Option Agreement (incorporated by reference to the Exhibit 10(a) to the Quarterly Report on Form 10-Q for the quarter ended September 26, 2004, filed with the SEC on October 19, 2004).* |
|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(g) | Amendments to the CTS Corporation Pension Plan (incorporated by reference to Exhibit 10(p) to the Annual Report on Form 10-K for the year ended December 31, 2005, filed with the SEC on February 27, 2006).* |
|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(h) | Amendments to the CTS Corporation Pension Plan (incorporated by reference to Exhibit 10(a) to the Quarterly Report on Form 10-Q for the quarter ended April 2, 2006, filed with the SEC on April 26, 2006).* |
|---------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(i) | Credit Agreement, dated as of November 18, 2010, by and among CTS Corporation, the Lenders named therein and Harris N.A. as L/C Issuer, and Administrative Agent (incorporated by reference to Exhibit 10(a) to the Current Report on Form 8-K, filed with the SEC on November 22, 2010). |
|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(k) | Amendment No. 1 to the CTS Corporation 2004 Omnibus Long-term Incentive Plan (incorporated by reference to Exhibit 10(aa) to the Annual Report on Form 10-K filed with the SEC on May 15, 2007).* |
|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(l) | CTS Corporation Management Incentive Plan, approved by the shareholders on June 28, 2007 (incorporated by reference to Appendix A to the Proxy Statement for the 2007 Annual Meeting of Shareholders, filed with the SEC on May 24, 2007).* |
|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(m) | Performance Share Agreement between CTS Corporation and Vinod M. Khilnani, dated August 1, 2007 (incorporated by reference to Exhibit 10(a) to the Quarterly Report on Form 10-Q for the quarter ended September 30, 2007, filed with the SEC on October 24, 2007).* |
|---------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(n) | Prototype Individual Excess Benefit Retirement Plan (incorporated by reference to Exhibit 10(d) to the Quarterly Report on Form 10-Q for the quarter ended September 30, 2007, filed with the SEC on October 24, 2007).* |
|---------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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Table of Contents

| (10)(o) | Prototype Change in Control Agreement first reported on Current Report Form 8-K on December 5, 2007 (incorporated by reference to Exhibit 10(hh) to the Annual Report on Form 10-K filed with the SEC on February 28, 2008).* |
|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(p) | Amendments to the CTS Corporation Pension Plan (formerly known as the CTS Corporation Salaried Employees’ Pension Plan) (incorporated by reference to Exhibit 10(bb) to the Annual Report on Form 10-K for the year ended December 31, 2008, filed with the SEC on February 23, 2009).* |
|---------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(q) | 2009-2010 Performance Restricted Stock Unit Plan (incorporated by reference to Exhibit 10(a) to the Quarterly Report on Form 10 Q for the quarter ended March 29, 2009, filed with the SEC on April 29, 2009).* |
|---------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(r) | CTS Corporation 2009 Omnibus Equity and Performance Incentive Plan (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8 K, filed with the SEC on May 28, 2009).* |
|---------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(s) | 2010 – 2011 Performance Restricted Stock Unit Plan (incorporated by reference to Exhibit 10(a) to the Quarterly Report on Form 10-Q for the quarter ended April 4, 2010, filed with the SEC on April 28, 2010).* |
|---------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(t) | Form Restricted Stock Unit Agreement (Shares) (incorporated by reference to Exhibit 10.2 to the Current Report on Form 8 K, filed with the SEC on May 28, 2009).* |
|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(u) | Form Restricted Stock Unit Agreement (Cash) (incorporated by reference to Exhibit 10.3 to the Current Report on Form 8 K, filed with the SEC on May 28, 2009).* |
|---------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(v) | CTS Corporation Executive Severance Policy, effective as of September 10, 2009 (incorporated by reference to Exhibit 10 to the Quarterly Report on Form 10 Q for the quarter ended September 27, 2009, filed with the SEC on October 28, 2009).* |
|---------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(w)    Amendments to the CTS Corporation Pension Plan (formerly known as the CTS Corporation Salaried Employees’ Pension Plan).* |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------|

| (10)(x) | Letter Agreement dated February 19, 2010 by and among CTS Corporation, Toyota Motor Sales, U.S.A. Inc., Toyota Canada Inc. and Toyota Motor Engineering & Manufacturing North America, Inc. (incorporated by reference to Exhibit 10(a) to the Quarterly Report on form 10-Q for the quarter ended October 3, 2010, filed with the SEC October 27, 2010). |
|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (13) | Portions of the 2010 Annual Report to shareholders incorporated herein. |
|------|-------------------------------------------------------------------------|

| (21) | Subsidiaries. |
|------|---------------|

| (23)(a) | Consent of Grant Thornton LLP. |
|---------|--------------------------------|

| (31)(a) | Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. |
|---------|--------------------------------------------------------------------------|

| (31)(b) | Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. |
|---------|--------------------------------------------------------------------------|

| (32)(a) | Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. |
|---------|-------------------------------------------------------------------------------------------------------------------------|

| (32)(b) | Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. |
|---------|-------------------------------------------------------------------------------------------------------------------------|

| * |   | Management contract or compensatory plan or arrangement. |
|---|--------|----------------------------------------------------------|

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Table of Contents

SIGNATURES

|                         |                                                              |                      |
|------------------------------|-------------------------------------------------------------------|---------------------------|
|                         | CTS Corporation                                                   |
|                    |                                                         |                 |
| Date: February 24, 2011 | By:                                                     | /s/ Donna L. Belusar |
|                         | Donna L. BelusarSenior Vice President and Chief Financial Officer |

|                         |                                                                                                               |                       |
|------------------------------|--------------------------------------------------------------------------------------------------------------------|----------------------------|
| Date: February 24, 2011 | By:                                                                                                      | /s/ Vinod M. Khilnani |
|                         | Vinod M. KhilnaniChairman of the Board, President, and Chief Executive Officer  (Principal Executive Officer) |
|                         |                                                                                                               |

|                         |                        |                    |
|------------------------------|-----------------------------|-------------------------|
| Date: February 24, 2011 | By:               | /s/ Thomas G. Cody |
|                         | Thomas G. CodyLead Director |

|                         |                     |                      |
|------------------------------|--------------------------|---------------------------|
| Date: February 24, 2011 | By:            | /s/ Walter S. Catlow |
|                         | Walter S. CatlowDirector |

|                         |                        |                         |
|------------------------------|-----------------------------|------------------------------|
| Date: February 24, 2011 | By:               | /s/ Lawrence J. Ciancia |
|                         | Lawrence J. CianciaDirector |

|                         |                        |                         |
|------------------------------|-----------------------------|------------------------------|
| Date: February 24, 2011 | By:               | /s/ Patricia K. Collawn |
|                         | Patricia K. CollawnDirector |

|                         |                         |                          |
|------------------------------|------------------------------|-------------------------------|
| Date: February 24, 2011 | By:                | /s/ Roger R. Hemminghaus |
|                         | Roger R. HemminghausDirector |

|                         |                       |                        |
|------------------------------|----------------------------|-----------------------------|
| Date: February 24, 2011 | By:              | /s/ Michael A. Henning |
|                         | Michael A. HenningDirector |

|                           |                                      |                     |
|--------------------------------|-------------------------------------------|--------------------------|
| Date: February 24, 2011   | By:                             | /s/ Gordon Hunter   |
|                           | Gordon HunterDirector                     |
|                           |                                      |                     |
| Date: February 24, 2011   | By:                             | /s/ Diana M. Murphy |   |
|       | Diana M. MurphyDirector    |                     |

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Table of Contents

|                    |                       |                        |
|-------------------------|----------------------------|-----------------------------|
| Date: February 24, 2011 | By:              | /s/ Robert A. Profusek |
|                    | Robert A. ProfusekDirector |

|                         |                                                                                           |                      |
|------------------------------|------------------------------------------------------------------------------------------------|---------------------------|
| Date: February 24, 2011 | By:                                                                                  | /s/ Donna L. Belusar |
|                         | Donna L. BelusarSenior Vice President and Chief Financial Officer(Principal Financial Officer) |

|                         |                                                                       |                     |
|------------------------------|----------------------------------------------------------------------------|--------------------------|
| Date: February 24, 2011 | By:                                                              | /s/ Thomas A. Kroll |
|                         | Thomas A. KrollVice President and Controller(Principal Accounting Officer) |

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Table of Contents

|   | Consolidated Statements of (Earnings/Loss)  - Years ended December 31, 2010, December 31, 2009 and December 31, 2008 |
|--------|--------------------------------------------------------------------------------------------------------------------------------|

|   | Consolidated Balance Sheets - December 31, 2010 and December 31, 2009 |
|--------|-----------------------------------------------------------------------|

|   | Consolidated Statements of Cash Flows - Years ended December 31, 2010, December 31, 2009 and December 31, 2008 |
|--------|----------------------------------------------------------------------------------------------------------------|

|   | Consolidated Statements of Shareholders’ Equity - Years ended December 31, 2010, December 31, 2009 and December 31, 2008 |
|--------|--------------------------------------------------------------------------------------------------------------------------------|

|   | Notes to consolidated financial statements |
|--------|--------------------------------------------|

|   | Schedule II – Valuation and Qualifying Accounts |
|--------|-------------------------------------------------------|

|   | All other schedules for which provision is made in the applicable accounting regulations of the Securities and Exchange Commission have been omitted because they are not applicable, not required or the information is included in the consolidated financial statements or notes thereto. |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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Table of Contents

|                                                         |   |   |                                              |   |
|--------------------------------------------------------------|--------|--------|---------------------------------------------------|--------|
| /s/ Vinod M. Khilnani                                        |   |   | /s/ Donna L. Belusar                              |   |
| Vinod M. Khilnani                                            |   |   | Donna L. Belusar                                  |   |
| Chairman of the Board, President and Chief Executive Officer |   |   | Senior Vice President and Chief Financial Officer |   |

----