Item 1. Business

General

Illinois Tool Works Inc. (the "Company" or "ITW") was founded in 1912 and incorporated in 1915. The Company's ticker symbol is ITW. The Company is a global manufacturer of a diversified range of industrial products and equipment with 85 divisions in 56 countries. As of December 31, 2017, the Company employed approximately 50,000 people.

The Company's operations are organized and managed based on similar product offerings and end markets, and are reported to senior management as the following seven segments: Automotive OEM; Food Equipment; Test & Measurement and Electronics; Welding; Polymers & Fluids; Construction Products; and Specialty Products. The following is a description of the Company's seven segments:

Automotive OEM— This segment is a global, niche supplier to top tier OEMs, providing unique innovation to address pain points for sophisticated customers with complex problems. Businesses in this segment produce components and fasteners for automotive-related applications. This segment primarily serves the automotive original equipment manufacturers and tiers market. Products in this segment include:

•	plastic and metal components, fasteners and assemblies for automobiles, light trucks and other industrial uses.

Food Equipment— This segment is a highly focused and branded industry-leader in commercial food equipment differentiated by innovation and integrated service offerings. This segment primarily serves the food service, food institutional/restaurant and food retail markets. Products in this segment include:

•	warewashing equipment;

•	cooking equipment, including ovens, ranges and broilers;

•	refrigeration equipment, including refrigerators, freezers and prep tables;

•	food processing equipment, including slicers, mixers and scales;

•	kitchen exhaust, ventilation and pollution control systems; and

•	food equipment service, maintenance and repair.

Test & Measurement and Electronics— This segment is a branded and innovative producer of test and measurement and electronic manufacturing and maintenance, repair, and operations, or "MRO" solutions that improve efficiency and quality for customers in diverse end markets. Businesses in this segment produce equipment, consumables, and related software for testing and measuring of materials and structures, as well as equipment and consumables used in the production of electronic subassemblies and microelectronics. This segment primarily serves the electronics, general industrial, industrial capital goods, automotive original equipment manufacturers and tiers, and consumer durables markets. Products in this segment include:

•	equipment, consumables, and related software for testing and measuring of materials, structures, gases and fluids;

•	electronic assembly equipment and related consumable solder materials;

•	electronic components and component packaging;

•	static control equipment and consumables used for contamination control in clean room environments; and

•	pressure sensitive adhesives and components for telecommunications, electronics, medical and transportation applications.

Welding— This segment is a branded value-added equipment and specialty consumable manufacturer with innovative and leading technology. Businesses in this segment produce arc welding equipment, consumables and accessories for a wide array of industrial and commercial applications. This segment primarily serves the general industrial market, which includes fabrication, shipbuilding and other general industrial markets, and energy, construction, MRO, automotive original equipment manufacturers and tiers, and industrial capital goods markets. Products in this segment include:

•	arc welding equipment;

•	metal arc welding consumables and related accessories; and

•	metal jacketing and other insulation products.

Polymers & Fluids— This segment is a highly branded supplier to niche markets that require value-added, differentiated products. Businesses in this segment produce engineered adhesives, sealants, lubrication and cutting fluids, and fluids and polymers for auto aftermarket maintenance and appearance. This segment primarily serves the automotive aftermarket, general industrial, MRO and construction markets. Products in this segment include:

•	adhesives for industrial, construction and consumer purposes;

•	chemical fluids which clean or add lubrication to machines;

•	epoxy and resin-based coating products for industrial applications;

•	hand wipes and cleaners for industrial applications;

•	fluids, polymers and other supplies for auto aftermarket maintenance and appearance;

•	fillers and putties for auto body repair; and

•	polyester coatings and patch and repair products for the marine industry.

Construction Products— This segment is a branded supplier of innovative engineered fastening systems and solutions. This segment primarily serves the residential construction, renovation/remodel and commercial construction markets. Products in this segment include:

•	fasteners and related fastening tools for wood and metal applications;

•	anchors, fasteners and related tools for concrete applications;

•	metal plate truss components and related equipment and software; and

•	packaged hardware, fasteners, anchors and other products for retail.

Specialty Products— This segment is focused on diversified niche market opportunities with substantial patent protection producing beverage packaging equipment and consumables, product coding and marking equipment and consumables, and appliance components and fasteners. This segment primarily serves the food and beverage, consumer durables, general industrial, printing and publishing and industrial capital goods markets. Products in this segment include:

•	line integration, conveyor systems and line automation for the food and beverage industries;

•	plastic consumables that multi-pack cans and bottles and related equipment;

•	foil, film and related equipment used to decorate consumer products;

•	product coding and marking equipment and related consumables;

•	plastic and metal fasteners and components for appliances;

•	airport ground support equipment; and

•	components for medical devices.

The information set forth below is applicable to all segments of the Company unless otherwise noted.

The ITW Business Model

The powerful and highly differentiated ITW Business Model is the Company’s core source of value creation. This business model is the Company’s competitive advantage and defines how ITW creates value for its shareholders and comprises three unique elements:

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ITW’s 80/20 front to back process is the operating system that is applied in every ITW business. Initially introduced as a manufacturing efficiency tool in the 1980s, ITW has continually refined, improved and expanded 80/20 into a proprietary, holistic business management process that generates significant value for the Company and its customers. Through the application of data-driven insights generated by 80/20 practice, ITW focuses on its largest and best opportunities (the “80”) and eliminates cost, complexity and distractions associated with the less profitable opportunities (the “20”). 80/20 enables ITW businesses to consistently achieve world-class operational excellence in product availability, quality, and innovation, while generating superior financial performance;

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Customer-back innovation has fueled decades of profitable growth at ITW. The Company’s unique innovation approach is built on insight gathered from the 80/20 front to back process. Working from the customer back, ITW businesses position themselves as the go-to problem solver for their “80” customers. ITW’s innovation efforts are focused on understanding customer needs, particularly those in “80” markets with solid long-term growth fundamentals, and subsequently creating unique solutions to address those needs. These customer insights and learnings drive innovation at ITW and have contributed to a portfolio of more than 17,000 granted and pending patents;

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ITW’s decentralized, entrepreneurial culture enables ITW businesses to be fast, focused, and responsive. ITW businesses have significant flexibility within the framework of the ITW Business Model to customize their approach in order to best serve their specific customers' needs. ITW colleagues recognize their unique responsibilities to execute the Company's strategy and values. As a result, the Company maintains a focused and simple organizational structure that, combined with outstanding execution, delivers best-in-class services adapted to each business' customers and end markets.

Enterprise Strategy

In late 2012, ITW began the first phase of its strategic framework transitioning the Company on its current strategic path to fully leverage the compelling performance potential of the ITW Business Model. Since then, ITW has made considerable progress, as evidenced by the Company’s strong financial performance over the past five years.

The roots of ITW’s Enterprise Strategy began in late 2011 / early 2012, when the Company undertook a complete review of its performance. Focusing on its businesses delivering consistent above-market growth with best-in-class margins and returns, ITW developed a strategy to replicate that performance across its operations.

Based on this rigorous evaluation, ITW determined that solid and consistent above-market organic growth must be the core growth engine to deliver world-class financial performance and compelling long-term returns for its shareholders. To shift its primary growth engine to organic, the Company began executing a multi-step approach.

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The first step was to narrow the focus and improve the quality of ITW’s business portfolio. As part of the Portfolio Management initiative, ITW exited businesses that were operating in commoditized market spaces and prioritized sustainable differentiation as a must-have requirement for all ITW businesses. This process included both divesting entire businesses and exiting commoditized product lines and customers inside otherwise highly differentiated ITW divisions.

As a result of this work, ITW’s business portfolio now has significantly higher organic growth potential. ITW segments and divisions now possess attractive and differentiated product lines and end markets as they continue to improve operating margins and generate price/cost increases. The Company achieved this through product line simplification, or eliminating the complexity and overhead costs associated with smaller product lines and customers, while supporting and growing the businesses’ largest / most profitable customers and product lines. With the initiative nearly complete and ITW businesses demonstrating notably improved financial performance, the Company believes that the product line simplification work is returning to more normalized levels.

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Step two, Business Structure Simplification, was implemented to simplify and scale-up ITW’s operating structure to support increased engineering, marketing, and sales resources, and, at the same time, improve global reach and competitiveness, all of which were critical to driving accelerated organic growth. ITW now has 85 scaled-up divisions with significantly enhanced focus on growth investments, core customers and products, and customer-back innovation.

•	The Strategic Sourcing initiative established sourcing as a core strategic and operational capability at ITW. The Company’s 80/20-enabled sourcing organization has delivered an average of one percent reduction in spend each year from 2013 through 2017 and is on track to do the same in 2018.

•	With the portfolio realignment and scale-up work largely complete, the Company shifted its focus to preparing for and accelerating, organic growth, reapplying 80/20 to optimize its newly scaled-up divisions for growth, first, to build a foundation of operational excellence, and second, to identify the best opportunities to drive organic growth.

ITW has clearly demonstrated superior 80/20 management, resulting in meaningful incremental improvement in margins and returns as evidenced by the Company’s operating margin and after-tax return on invested capital. At the same time, these 80/20 initiatives can also result in restructuring initiatives that reduce costs and improve profitability and returns. With this first phase of the strategy nearing completion, the Company will look ahead to the next five years and delivering differentiated performance on a sustained basis.

Sustained Differentiated Performance

While the Company has made considerable progress and ITW’s performance is nearing best-in-class levels, the Company has significant opportunity for further improvement. The second phase of the strategic framework is focused on delivering

differentiated performance on a sustained basis, with consistent above market organic growth. Moving forward, the Company remains committed to the four strategic principles that have served as the foundation of its progress over the past five years and that the Company believes best positions ITW to deliver continued differentiated performance over the next five years:

•	The ITW Business Model is the Company's competitive advantage

•	Focus on quality growth

•	"Do what we say" execution is a critical differentiator

•	Invest only where ITW has a competitive advantage

The ITW Business Model is the Company's Competitive Advantage

The ITW Business Model is the combination of a set of strategic, operational, and cultural approaches and practices that is applied to every ITW business. The Business Model has existed inside the Company for over 30 years and is truly ITW's differentiating competitive advantage. The ITW Business Model is comprised of three elements:

• 80/20 Front to Back Process = How the Company Operates

• Customer-Back Innovation Approach = How the Company Innovates

• Decentralized Entrepreneurial Culture = How the Company Executes

Focus on Quality Growth

ITW prioritizes high-quality revenue growth and, as such, the Company’s primary growth focus is organic.

Leveraging the Business Model and the 80/20 front to back process provides a clear view of where to focus for high- quality growth. The Company targets differentiated end-markets and customers with critical needs and challenging pain points. ITW generates high-quality growth through consistent customer-back innovation and customer service excellence.

The Company only invests and operates in industries and businesses that have the right “raw material” to generate high quality organic growth through the application of the ITW Business Model. ITW’s current portfolio of seven segments offers solid growth potential and a high degree of diversification in terms of geographic and end market exposures, enabling the Company to deliver consistent high-quality growth in an increasingly volatile and competitive global market environment.

"Do What We Say" Execution is a Critical Differentiator

ITW’s commitment to execution is a key differentiator for ITW. Living up to the Company’s commitments - “do what we say” execution - is a deeply embedded core element of the culture. The culture is the engine that translates ITW's strategy into action, and action into results.

All divisions function within a “framework” that defines how the culture operates and defines the Company’s values, business model and strategy to ensure all divisions are working toward our common set of goals. Business leaders have the flexibility to define the actions and customize their approach to meet those goals. This “flexibility within the framework” establishes an entrepreneurial environment where decisions are made “bottom up” by those with the greatest knowledge, capability and proximity to the customer, which enables our businesses to be nimble and react quickly to market conditions and customer requirements.

ITW is simple, straightforward and transparent in everything it does. The Company sets clear performance expectations and financial targets, executes against these at the appropriate pace, and establishes the freedom to define how to achieve results within the construct of the Business Model.

Invest Only Where ITW Has a Competitive Advantage

The Company is highly focused and disciplined in its approach to invest only where it can leverage the ITW Business Model into compelling and sustainable competitive advantage.

Investments to support organic growth and sustain its highly differentiated core businesses, such as new product innovation, marketing programs, simplification projects, and capital investments, are ITW’s number one investment priority.

Divestiture Activity

Divestiture of the Industrial Packaging Segment— In February 2013, the Company announced that it was initiating a review process to explore strategic alternatives for the Industrial Packaging segment. In September 2013, the Company’s Board of Directors authorized a plan to commence a sale process for the Industrial Packaging segment. The Company classified the Industrial Packaging segment as held for sale beginning in the third quarter of 2013 and no longer presented this segment as part of its continuing operations.

On February 6, 2014, the Company announced that it had signed a definitive agreement to sell the Industrial Packaging business to The Carlyle Group for $3.2 billion. The transaction was completed on May 1, 2014, resulting in a pre-tax gain of $1.7 billion ($1.1 billion after-tax) in the second quarter of 2014 which was included in Income from discontinued operations.

Current Year Developments

Refer to Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations.

Financial Information about Segments

Segment information is included in Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations and Note 14. Segment Information in Item 8. Financial Statements and Supplementary Data.

Distribution Methods

The Company’s businesses primarily distribute their products directly to industrial manufacturers and through independent distributors.

Backlog

Backlog generally is not considered a significant factor in the Company’s businesses as relatively short delivery periods and rapid inventory turnover are characteristic of most of their products. Backlog by segment as of December 31, 2017 and 2016 was as follows:

In millions	2017				2016
Automotive OEM	$	462			$	452
Food Equipment	204				188
Test & Measurement and Electronics	342				298
Welding	90				67
Polymers & Fluids	57				62
Construction Products	39				29
Specialty Products	243				217
Total	$	1,437			$	1,313

Due to the predominately short term nature of the Company's arrangements with its customers, backlog orders scheduled for shipment beyond calendar year 2018 were not material as of December 31, 2017.

Competition

With operations in 56 countries, the Company offers a wide range of products in a myriad of markets, many of which are fragmented, and the Company encounters a variety of competitors that vary by product line, end market and geographic area. The Company's competitors include many regional or specialized companies, as well as large U.S. and non-U.S. companies or divisions of large companies. Each of the Company's segments generally has several main competitors and numerous smaller ones in most of their end markets and geographic areas. In addition to numerous smaller regional competitors, the Welding segment competes globally with Lincoln Electric and ESAB.

In virtually all segments, the Company differentiates its businesses from its competitors based on product innovation, product quality, brand preference and service delivery. Technical capability is also a competitive factor in most segments. The

Company believes that each segment's primary competitive advantages derive from the Company's business model and decentralized operating structure, which creates a strong focus on end markets and customers at the local level, enabling its businesses to respond rapidly to market dynamics. This structure enables the Company's businesses to drive operational excellence utilizing the Company's 80/20 front to back process and leveraging its product innovation capabilities. The Company also believes that its global footprint is a competitive advantage in many of its markets, especially in its Automotive OEM segment.

Raw Materials

The Company uses raw materials of various types, primarily steel, resins and chemicals, that are available from numerous commercial sources. The availability of materials and energy has not resulted in any significant business interruptions or other major problems, and no such problems are currently anticipated.

Research and Development

Developing new and improved products, broadening the application of established products, and continuing efforts to improve and develop new methods, processes and equipment all contribute to the Company's organic growth. Many new products are designed to reduce customers' costs by eliminating steps in their manufacturing processes, reducing the number of parts in an assembly or improving the quality of customers' assembled products. Typically, the development of such products is accomplished by working closely with customers on specific applications. Research and development expenses were $225 million, $223 million and $218 million for the years ended December 31, 2017, 2016 and 2015, respectively.

Intellectual Property

The Company owns approximately 3,600 unexpired U.S. patents and 8,000 foreign patents covering articles, methods and machines. In addition, the Company has approximately 1,500 applications for patents pending in the U.S. Patent Office and 4,600 applications pending in foreign patent offices. There is no assurance that any of these patents will be issued. The Company maintains a patent group for the administration of patents and processing of patent applications.

The Company believes that many of its patents are valuable and important; however, the expiration of any one of the Company's patents would not have a material effect on the Company's results of operations or financial position. The Company also credits its success in the markets it serves to engineering capability; manufacturing techniques; skills and efficiency; marketing and sales promotion; and service and delivery of quality products to its customers.

In addition to patents, many of the Company's products and services are sold under various owned or licensed trademarks, which are important to the Company in the aggregate. Some of the Company's more significant trademarks include ITW, which is also used in conjunction with the trademarks of many of the Company's businesses; Deltar and Shakeproof in the Automotive OEM segment; Hobart in the Food Equipment segment; Instron in the Test & Measurement and Electronics segment; Miller in the Welding segment; Rain-X and Permatex in the Polymers & Fluids segment; Paslode in the Construction Products segment; and Hi-Cone in the Specialty Products segment.

Environmental

The Company believes that its manufacturing plants and equipment are in substantial compliance with all applicable environmental regulations. Additional measures to maintain compliance are not expected to materially affect the Company’s capital expenditures, competitive position, financial position or results of operations.

Various legislative and administrative regulations concerning environmental issues have become effective or are under consideration in many parts of the world relating to manufacturing processes and the sale or use of certain products. To date, such developments have not had a substantial adverse impact on the Company's revenues, earnings or cash flows.

Employees

The Company employed approximately 50,000 people as of December 31, 2017 and considers its employee relations to be excellent.

International

The Company's international operations include subsidiaries and joint ventures in 55 foreign countries on six continents. These operations serve such end markets as automotive OEM/tiers, automotive aftermarket, commercial food equipment, construction, general industrial, and others on a worldwide basis. The Company's revenues from sales to customers outside the U.S. were approximately 56% of revenues, 55% of revenues and 54% of revenues for the years ended December 31, 2017, 2016 and 2015, respectively.

Refer to Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations and Note 14. Segment Information in Item 8. Financial Statements and Supplementary Data for additional information on international activities. International operations are subject to certain potential risks inherent in conducting business in foreign countries, including price controls, exchange controls, limitations on participation in local enterprises, nationalization, expropriation and other governmental action, and fluctuations in currency exchange rates. Additional risks of the Company's international operations are described under Item 1A. Risk Factors.

Executive Officers

Executive Officers of the Company as of February 15, 2018 were as follows:

Name	Office	Age
E. Scott Santi	Chairman & Chief Executive Officer	56
Norman D. Finch Jr.	Senior Vice President, General Counsel & Secretary	53
John R. Hartnett	Executive Vice President	57
Michael M. Larsen	Senior Vice President & Chief Financial Officer	49
Mary K. Lawler	Senior Vice President & Chief Human Resources Officer	52
Roland M. Martel	Executive Vice President	63
Steven L. Martindale	Executive Vice President	61
Sundaram Nagarajan	Executive Vice President	55
Christopher O’Herlihy	Vice Chairman	54
Randall J. Scheuneman	Vice President & Chief Accounting Officer	50
Lei Schlitz	Executive Vice President	51
Juan Valls	Executive Vice President	56
Michael R. Zimmerman	Executive Vice President	57

The executive officers of the Company serve at the discretion of the Board of Directors. Set forth below is information regarding the principal occupations and employment and business experience over the past five years for each executive officer. Unless otherwise stated, employment is by the Company.

Mr. Santi is the Chairman of the Board and Chief Executive Officer of the Company. He was elected Chairman of the Board in 2015 after having served as President and Chief Executive Officer, as well as a director, since November 2012. In October 2012, he was elected President and Chief Operating Officer. Mr. Santi served as Vice Chairman from 2008 to October 2012.

Mr. Finch joined the Company in January 2017 and was elected Senior Vice President, General Counsel and Secretary in February 2017. From 2013 to January 2017, he served as Vice President, General Counsel and Secretary of Sealed Air Corporation, a global manufacturer of products related to food safety and security, facility hygiene and product protection. Prior thereto, he served as Vice President, Associate General Counsel and Chief Compliance Officer of Zimmer Holdings, Inc. (now Zimmer Biomet Holdings), a global medical device company.

Mr. Hartnett was elected Executive Vice President in 2012. Prior to that, he held various management positions of increasing responsibility. Most recently, he served as Group President of the automotive aftermarket businesses.

Mr. Larsen joined the Company and was elected Senior Vice President and Chief Financial Officer in September 2013. From October 2010 to August 2013, he served as Vice President and Chief Financial Officer of Gardner Denver, Inc., a global manufacturer of highly engineered compressors, blowers, pumps and other fluid transfer equipment. In addition, he served as

interim CEO of Gardner Denver from July 2012 to November 2012, and as President, Chief Executive Officer and a director of that company from November 2012 to July 2013.

Ms. Lawler joined the Company and was elected Senior Vice President and Chief Human Resources Officer in October 2014. From June 2013 to October 2014, she served as Executive Vice President, Human Resources, at GATX Corporation, a rail car leasing company. Prior to that, she served as Senior Vice President, Human Resources, at GATX Corporation, from May 2008 to May 2013.

Mr. Martel has served in his present position since 2006.

Mr. Martindale has served in his present position since 2008.

Mr. Nagarajan has served in his present position since 2010.

Mr. O’Herlihy was elected Vice Chairman in 2015. Prior to that, he served as Executive Vice President from 2010 to 2015.

Mr. Scheuneman has served in his present position since 2009.

Ms. Schlitz was elected Executive Vice President in 2015. Prior to that, she held various management positions of increasing responsibility. Most recently, she served as a Group President within the food equipment businesses since 2011.

Mr. Valls has served in his present position since 2007.

Mr. Zimmerman was elected Executive Vice President in 2015. Prior to that, he held various management positions of increasing responsibility. Most recently, he served as a Group President within the welding businesses since 2010.

Available Information

The Company electronically files reports with the Securities and Exchange Commission ("SEC"). The public may read and copy any materials the Company has filed with the SEC at the SEC's Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. In addition, the SEC maintains a website (www.sec.gov) that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC. Copies of the Company's Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 are also available free of charge through the Company's website (www.itw.com), as soon as reasonably practicable after electronically filing with or otherwise furnishing such information to the SEC, and are available in print to any shareholder who requests them. The Company will furnish any exhibit not contained herein upon the payment of a fee representing the reasonable cost to the Company of furnishing the exhibit. Requests for exhibits may be sent to Illinois Tool Works Inc., 155 Harlem Avenue, Glenview, IL 60025, Attention: Secretary. Also posted on the Company’s website are the following:

•	Statement of Principles of Conduct;

•	Code of Ethics for CEO and key financial and accounting personnel;

•	Charters of the Audit, Corporate Governance and Nominating, and Compensation Committees of the Board of Directors;

•	Corporate Governance Guidelines;

•	Global Anti-Corruption Policy;

•	Corporate Citizenship Statement;

•	Conflict Minerals Policy Statement;

•	Supplier Code of Conduct; and

•	Government Affairs Information.