RPM International (RPM) 10-K 2018 FY Annual report

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D. C. 20549

Form 10-K

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

For the fiscal year ended May 31, 2018

OR

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

For the transition period from        to        

Commission File No. 1-14187

RPM INTERNATIONAL INC.

(Exact Name of Registrant as Specified in its Charter)

Delaware	02-0642224
(State or Other Jurisdiction of Incorporation or Organization)	(IRS Employer Identification No.)
P.O. Box 777, 2628 Pearl Road, Medina, Ohio	44258
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s telephone number, including area code:

(330) 273-5090

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

Title of Each Class	Name of Each Exchange on Which Registered
Common Stock, par value $0.01	New York Stock Exchange
Rights to Purchase Shares of Common Stock	New York Stock Exchange

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

None

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

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

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☑    No  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ☑    No  ☐

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer	☑		Accelerated filer	☐
Non-accelerated filer	☐	(Do not check if a smaller reporting company)	Smaller reporting company	☐
Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

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

The aggregate market value of the Common Stock of the Registrant held by non-affiliates (based upon the closing price of the Common Stock as reported on the New York Stock Exchange on November 30, 2017, the last business day of the Registrant’s most recently completed second fiscal quarter) was approximately $6,972,779,525.  For purposes of this information, the 2,030,090 outstanding shares of Common Stock which were owned beneficially as of November 30, 2017 by executive officers and Directors of the Registrant were deemed to be the shares of Common Stock held by affiliates.

As of July 19, 2018, 133,482,764 shares of Common Stock were outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant’s 2018 Annual Report to Stockholders for the fiscal year ended May 31, 2018 (the “2018 Annual Report to Stockholders”) are incorporated by reference into Parts I and II of this Annual Report on Form 10-K. Portions of the definitive Proxy Statement to be used in connection with the Registrant’s Annual Meeting of Stockholders to be held on October 4, 2018 (the “2018 Proxy Statement”) are incorporated by reference into Part III of this Annual Report on Form 10-K.

Except as otherwise stated, the information contained in this Annual Report on Form 10-K is as of May 31, 2018.

Table of Contents

	PART I
Item 1.	Business	3
Item 1A.	Risk Factors	9
Item 1B.	Unresolved Staff Comments	16
Item 2.	Properties	16
Item 3.	Legal Proceedings	18
Item 4.	Mine Safety Disclosures	18
	PART II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	18
Item 6.	Selected Financial Data	19
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	19
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	19
Item 8.	Financial Statements and Supplementary Data	19
Item 9.	Changes in and Disagreements With Accountants on Accounting and Financial Disclosure	19
Item 9A.	Controls and Procedures	20
Item 9B.	Other Information	20
	PART III
Item 10.	Directors, Executive Officers and Corporate Governance	21
Item 11.	Executive Compensation	22
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	22
Item 13.	Certain Relationships and Related Transactions, and Director Independence	22
Item 14.	Principal Accountant Fees and Services	22
	PART IV
Item 15.	Exhibits and Financial Statement Schedules	23
Exhibit Index		24
SIGNATURES		29
Schedule II		S-1

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PART I

Item 1.  Business.

THE COMPANY

RPM International Inc., a Delaware corporation, succeeded to the reporting obligations of RPM, Inc., an Ohio corporation, following a 2002 reincorporation transaction. RPM, Inc. was originally incorporated in 1947 under the name Republic Powdered Metals, Inc. and changed its name to RPM, Inc. in 1971.

As used herein, the terms “RPM,” the “Company,” “we,” “our” and “us” refer to RPM International Inc. and all of our consolidated subsidiaries, unless the context indicates otherwise. Our principal executive offices are located at 2628 Pearl Road, P.O. Box 777, Medina, Ohio 44258, and our telephone number is (330) 273-5090.

BUSINESS

Our subsidiaries manufacture, market and sell various specialty chemical product lines, including high-quality specialty paints, infrastructure rehab and repair products, protective coatings, roofing systems, sealants and adhesives, focusing on the maintenance and improvement needs of the industrial, specialty and consumer markets. Our family of products includes those marketed under brand names such as API, Betumat, Carboline, CAVE, DAP, Day-Glo, Dri-Eaz, Dryvit, Ekspan, Euclid, EUCO, Fibergrate, Fibregrid, Fibrecrete, Flecto, Flowcrete, Grupo PV, Hummervoll, illbruck, Key Resin, Mohawk, Prime Resins, Rust-Oleum, Specialty Polymer Coatings, Stonhard, TCI, Toxement, Tremco, Tuf-Strand, Universal Sealants, Viapol, Watco and Zinsser.  As of May 31, 2018, our subsidiaries marketed products in approximately 166 countries and territories and operated manufacturing facilities in approximately 145 locations in the United States, Argentina, Australia, Belgium, Brazil, Canada, Chile, China, Colombia, France, Germany, India, Italy, Malaysia, Mexico, The Netherlands, New Zealand, Norway, Poland, South Africa, South Korea, Spain, Sweden, Turkey, the United Arab Emirates and the United Kingdom. Approximately 37% of our sales are generated in international markets through a combination of exports to and direct sales in foreign countries. For the fiscal year ended May 31, 2018, we recorded net sales of $5.3 billion.

Available Information

Our Internet website address is www.rpminc.com. We make available free of charge on or through our website our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, and amendments to these reports, as soon as reasonably practicable after such reports are electronically filed with, or furnished to, the Securities and Exchange Commission.

Segment Information

Our business is divided into three reportable segments: the industrial reportable segment (“industrial segment”), the specialty reportable segment (“specialty segment”) and the consumer reportable segment (“consumer segment”). Within each reportable segment, we aggregate several operating segments which comprise individual companies or groups of companies and product lines, which generally address common markets, utilize similar technologies and are able to share manufacturing or distribution capabilities. The industrial segment (Tremco Group, tremco illbruck Group, and Performance Coatings Group), which comprises approximately 53% of our total net sales, includes maintenance and protection products for roofing and waterproofing systems, flooring, industrial coatings, passive fire protection, corrosion control, high-performance sealing and bonding solutions, infrastructure rehabilitation and repair and other construction chemicals.  The consumer segment (Rust-Oleum Group, DAP Group and SPG-Consumer Group) comprises approximately 33% of our total net sales and includes rust-preventative, special purpose and decorative paints, caulks, sealants, primers, nail enamels, cement, cleaners, floor sealers and woodcare coatings and other branded consumer products. The specialty segment (Specialty Products Group (“SPG”) – Industrial Group) comprises approximately 14% of our total net sales, and includes industrial cleaners, restoration services equipment, colorants, exterior finishes, edible coatings and other specialty original equipment manufacturer (“OEM”) coatings. See Note Q, “Segment Information,” of the Notes to Consolidated Financial Statements, which appears in the 2018 Annual Report to Stockholders, and is incorporated herein by reference, for financial information relating to our three reportable segments and financial information by geographic area.

Industrial Segment

Our industrial segment products are sold throughout North America and also account for the majority of our international sales. Our industrial product lines are sold directly to contractors, distributors and end-users, such as owners of industrial manufacturing

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facilities, public institutions and other commercial customers. Our industrial segment generated $2.8 billion in net sales for the fiscal year ended May 31, 2018 and includes the following major product lines and brand names:

Tremco Group:

• Waterproofing, coatings and institutional roofing systems used in building protection, maintenance and weatherproofing applications marketed under our Tremco, AlphaGuard, OneSeal, PowerPly, TremPly, TremLock, Vulkem and TREMproof brand names;

• sealants, air barriers, tapes and foams that seal and insulate joints in various construction assemblies and glazing assemblies marketed under our Tremco, Dymonic, ExoAir and Spectrem brand names;

• new residential home weatherization systems marketed under our TUFF-N-DRI, Watchdog Waterproofing and Enviro-Dri brand names; and

• specialized roofing and building maintenance and related services marketed by our Weatherproofing Technologies subsidiary.

tremco illbruck Group:

• sealing and bonding solutions for windows and doors, facades, interiors and exteriors under our illbruck brand name;

• flooring, waterproofing and in-plant glazing solutions under our Tremco brand name;

• solutions for fire stopping and intumescent steel coating under our Nullifire and Firetherm brand names; and

• solutions for the manufacturing industry under our Pactan brand name.

Performance Coatings Group:

• high-performance polymer flooring systems for industrial, institutional and commercial facilities, as well as offshore and marine structures and cruise, ferry and navy ships marketed under our Stonhard, Flowcrete, Key Resin, RPM Belgium, Hummervoll and API brand names;

• commercial, decorative flooring for architectural and design applications under the Flowcrete, Key Resin, Liquid Elements, Expanko, and Fritztile brand names;

• fiberglass reinforced plastic gratings and shapes used for industrial platforms, staircases and walkways marketed under our Fibergrate, Chemgrate, Corgrate, Fibregrid and Safe-T-Span brand names;

• high-performance, heavy-duty corrosion-control coatings, containment linings, fireproofing and soundproofing products and heat and cryogenic insulation products for a wide variety of industrial infrastructure and oil and gas-related applications marketed under our Carboline, Specialty Polymer Coatings, Nullifire, Charflame, Firefilm, A/D Fire, Thermo-Lag, Plasite and Perlifoc brand names;

• rolled asphalt roofing materials, waterproofing products, and chemical admixtures marketed under our Viapol, Vandex and Betumat brand names; 

• concrete and masonry admixtures, concrete fibers, curing and sealing compounds, structural grouts and mortars, epoxy adhesives, injection resins, polyurethane foams, floor hardeners and toppings, joint fillers, industrial and architectural coatings, decorative color/stains/stamps, and a comprehensive selection of restoration materials marketed under the Euclid, CAVE, Toxement, Viapol, Dural, EUCO, Eucon, Fiberstrand, Increte Systems, Plastol, Sentinel, Speed Crete, Tuf-Strand, Prime Gel, Prime Bond, Prime Coat, Prime Guard, Prime Rez and Prime Flex brand names;

• specialty construction products including bridge expansion joints, structural bearings, bridge deck and parking deck membranes, curb and channel drains, highway markings, protective coatings and asphalt and concrete repair products marketed under our Universal Sealants, BridgeCare, StructureCare, Pitchmastic, Nufins, Visul, EnviroKerb, EnviroChannel, EnviroDeck, EnviroGrate, Fibrecrete, Texacrete, Fibrejoint, Samiscreed and Epoplex brand names; and

• amine curing agents, reactive diluents, specialty epoxy resins and other intermediates under our Arnette Polymers brand name.

Consumer Segment

Our consumer segment manufactures and markets professional use and do-it-yourself (“DIY”) products for a variety of mainly consumer applications, including home improvement and personal leisure activities. Our consumer segment’s major manufacturing

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and distribution operations are located primarily in North America, along with a few locations in Europe, Australia, South Africa and South America.  Consumer segment products are sold directly to mass merchandisers, home improvement centers, hardware stores, paint stores, craft shops, cosmetic companies and to other smaller customers through distributors. Our consumer segment generated $1.8 billion in net sales in the fiscal year ended May 31, 2018 and is composed of the following major product lines and brand names:

Rust-Oleum Group:

• a broad line of coating products to protect and decorate a wide variety of surfaces for the DIY and professional markets which are sold under several key Rust-Oleum brand names, including Stops Rust, American Accents, Painter’s Touch, Specialty, Professional, Universal, Varathane, NeverWet, Watco, Epoxy Shield, Restore, Rock Solid, Whink, Miracle Sealants, SPS, Spraymate, Krud Kutter, Zinsser, XIM, Industrial Choice, Road Warrior, Sierra Performance, Hard Hat, Mathys, CombiColor, Noxyde, Blackfriar, HiChem and MultiSpec. In addition, Rust-Oleum branded products in Canada are marketed under the Rust-Oleum, Tremclad, Varathane and Zinsser brand names;

• a broad line of specialty products targeted to solve problems for the paint contractor and the DIYer for applications that include surface preparation, mold and mildew prevention, wallpaper removal and application, and waterproofing, under our Zinsser, B-I-N, Bulls Eye 1-2-3, Cover Stain, DIF, FastPrime, Sealcoat, Jomax, Gardz, Perma-White, Shieldz, Watertite, Okon and Parks brand names;

• cleaners sold under the Whink brand name and floor sealers sold under the Miracle Sealants and 511 brand names;

• deck and fence restoration products under the Wolman brand name;

• metallic and faux finish coatings marketed under our Modern Masters brand name;

• exterior wood deck and concrete restoration systems, and flooring finishes marketed under our Restore and RockSolid brand names; and

• an assortment of other products, including hobby paints and cements marketed under our Testors brand name.

DAP Group:

• a complete line of caulks, sealants, adhesives, insulating foam, spackling, glazing, and other general patch and repair products for home improvement and construction marketed through a wide assortment of DAP branded products, including ‘33’, ‘53’, ‘1012’, 4000, 7000, Alex, Alex Fast Dry, Alex Plus, Alex Ultra, Alex Flex, Beats The Nail, Blend-Stick, Blockade, Butyl-Flex, Caulk-Be-Gone, Crack Shot, Custom-Patch, DAP 3.0, DAP CAP, DAPtex, DryDex, Dynaflex 230, Dynaflex Ultra, Dynagrip, Elastopatch, Fast ‘N Final, FastPatch, Kwik Foam, Kwik Seal, Kwik Seal Plus, Kwik Seal Ultra, Mono, Patch Stick, Patch-N-Paint, Plastic Wood, Platinum Patch, Presto Patch, Quick Plug, Rapid Fuse, Rely-On, Seal ‘N Peel, SIDE Winder, Silicone Plus, Simple Seal, SMARTBOND, StrongStik, Touch’N Foam, Touch’N Seal, Weldwood and Phenoseal, which is a brand of Gloucester Company Inc., which is a subsidiary of DAP Products Inc.

SPG-Consumer Group:

• nail enamel, polish and coating components for the personal care industry.

Specialty Segment

Our specialty segment products are sold throughout North America and a few international locations, primarily in Europe.  Our specialty product lines are sold directly to contractors, distributors and end-users, such as industrial manufacturing facilities, public institutions and other commercial customers. The specialty segment generated $0.8 billion in net sales for the fiscal year ended May 31, 2018 and includes the following major product lines and brand names:

• fluorescent colorants and pigments marketed under our Day-Glo, Radiant and Dane Color brand names;

• shellac-based-specialty coatings for industrial and pharmaceutical uses, edible glazes, food coatings and ingredients marketed under our Mantrose-Haeuser, NatureSeal and Holton Food Products brand names;

• highly insulated building cladding materials (Exterior Insulating and Finishing Systems, “EIFS”) principally marketed in the U.S., Canada, U.K. and Poland under the Dryvit brand name;

• fire and water damage restoration products marketed under the Dri-Eaz, Unsmoke and ODORx brand names;

• professional carpet cleaning and disinfecting products marketed under the Sapphire Scientific, Chemspec and Prochem brand names;

• fuel additives marketed under our Valvtect brand name;

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• wood treatments marketed under our Kop-Coat and Tru-Core brand names;

• pleasure marine coatings marketed under our Pettit, Woolsey and Z-Spar brand names;

• wood furniture finishes and touch-up products marketed under our CCI/Finishworks, Mohawk, Chemical Coatings, Behlen, Westfield Coatings and Morrells brand names; and

• a variety of products for specialized applications, including powder coatings for exterior and interior applications marketed under our TCI brand name.

Foreign Operations

For the fiscal year ended May 31, 2018, our foreign operations accounted for approximately 35.5% of our total net sales, excluding any direct exports from the United States. Our direct exports from the United States were approximately 1.5% of our total net sales for the fiscal year ended May 31, 2018. In addition, we receive license fees and royalty income from numerous international license agreements, and we also have several joint ventures, which are accounted for under the equity method, operating in various foreign countries. We have manufacturing facilities in Argentina, Australia, Belgium, Brazil, Canada, Chile, China, Colombia, France, Germany, India, Italy, Malaysia, Mexico, The Netherlands, New Zealand, Norway, Poland, South Africa, South Korea, Spain, Sweden, Turkey, the United Arab Emirates and the United Kingdom. We also have sales offices or warehouse facilities in Austria, The Czech Republic, Egypt, Finland, Hong Kong, Hungary, Indonesia, Japan, Kenya, Kuwait, Oman, Portugal, Peru, Qatar, Russia, Singapore, Switzerland, Thailand, Vietnam and several other countries. Information concerning our foreign operations is set forth in Management’s Discussion and Analysis of Results of Operations and Financial Condition, which appears in the 2018 Annual Report to Stockholders, and is incorporated herein by reference.

Competition

We conduct our business in highly competitive markets, and all of our major products face competition from local, regional, national and multi-national firms. Our markets, however, are fragmented, and we do not face competition across all of our products from any one competitor in particular. Several of our competitors have access to greater financial resources and larger sales organizations than we do. While third-party figures are not necessarily available with respect to the size of our position in the market for each of our products, we believe that we are a major producer of caulks, sealants, insulating foams, patch-and-repair products for the general consumer as well as for the residential building trade; roofing systems; urethane sealants and waterproofing materials; aluminum coatings; cement-based coatings; hobby paints; small project paints; industrial-corrosion-control products; fireproofing; consumer rust-preventative coatings; polymer floorings; fluorescent coatings and pigments; fiberglass-reinforced-plastic gratings; nail polish; water and fire damage restoration products; carpet cleaning systems and shellac-based coatings. However, we do not believe that we have a significant share of the total protective coatings market (on a world-wide basis). The following is a summary of the competition that our key products face in the various markets in which we compete:

Paints, Coatings, Adhesives and Sealants Products

The market for paints, coatings, adhesives and sealants has experienced significant consolidation over the past several decades. However, the market remains fragmented, which creates further consolidation opportunities for industry participants. Many leading suppliers tend to focus on coatings, while other companies focus on adhesives and sealants. Barriers to market entry are relatively high for new market entrants due to the lengthy intervals between product development and market acceptance, the importance of brand identity and the difficulty in establishing a reputation as a reliable supplier of these products. Most of the suppliers, including us, who provide these items have a portfolio of products that span across a wide variety of applications.

Consumer Home Improvement Products.  Within the consumer segment, we generally serve the home improvement market with products designed for niche architectural, rust-preventative, decorative and special purpose paint and caulking and sealing applications. The products we sell for home improvement include those sold under our DAP, Phenoseal, Rust-Oleum, Watco and Zinsser brand names. Leading manufacturers of home improvement-related coatings, adhesives and sealants market their products to DIY users and contractors through a wide range of distribution channels. These distribution channels include direct sales to home improvement centers, mass merchandisers, hardware and paint stores, and sales through distributors and sales representative organizations. Competitors in this market generally compete for market share by marketing and building upon brand recognition, providing customer service and developing new products based on customer needs.

Industrial Protective Coatings Products.  Anti-corrosion protective coatings and fireproofing must withstand the destructive elements of nature and operating processes under harsh environments and conditions. Some of the larger consumers of high-performance protective and corrosion control coatings, fireproofing and intumescent steel coatings are the oil and gas, pulp and paper, petrochemical, shipbuilding, high-rise building construction, public utility and bridge and highway industries, and water and wastewater treatment plants. These markets are highly fragmented. We and our competitors compete for market share by supplying a

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wide variety of high-quality products and by offering customized solutions. Our protective industrial coating products are marketed primarily under our Carboline, Specialty Polymer Coatings, Plasite, Nullifire, Firefilm, Charflame, A/D Fire, Thermo-lag, Perlifoc and Epoplex brand names.

Roofing Systems Products

In the roofing industry, re-roofing applications have historically accounted for three-quarters of U.S. demand, with the remaining quarter generated by new roofing applications. The largest manufacturers of roofing systems products focus primarily on residential roofing as well as single-ply systems for low-end, commercial and institutional applications, competing mainly on price and, to a lesser degree, service. In contrast, we compete primarily for the higher-end, multi-ply and modified bitumen applications in the built-up and low-slope roofing industry. This specialty niche within the larger market tends to exhibit fewer commodity-market characteristics, with customers valuing the greater protection and longer life provided by these roofing systems, as well as ongoing maintenance, inspection and technical services. Our roofing systems are primarily marketed under our Tremco and Viapol brands. Historically, our typical roofing systems customers have included governmental facilities, universities, schools, hospitals, museums and certain manufacturing facilities. However, we are also very active in the growing market of sustainable roofing systems, and our Tremco Roofing fluid applied and restoration coating systems continue to represent our fastest growing product segment.  Our restoration systems meet sustainable objectives including energy efficiency through reflectivity and emissivity, and eliminate environmentally and economically costly landfill waste.

Construction Chemical Products

Flooring Systems Products.  Polymer flooring systems are used in industrial, commercial and, to a lesser extent, residential applications to provide a smooth, seamless surface that is impervious to penetration by water and other substances while being easy to clean and maintain. These systems are particularly well-suited for clean environments such as pharmaceutical, food and beverage and healthcare facilities. In addition, the fast installation time and long-term durability of these systems and products make them ideal for industrial floor repair and restoration. Polymer flooring systems are based on epoxy, polyurethane and methylmethacrylate resins. Most of these flooring systems are applied during new construction, but there is also a significant repair and renovation market. Key performance attributes in polymer flooring systems that distinguish competitors for these applications include static control, chemical resistance, contamination control, durability and aesthetics. We market our flooring systems under the Stonhard, Flowcrete, Key Resin, RPM Belgium, Expanko, Fritztile, Hummervoll and API brand names.

FRP Grating and Structural Composites.  Fiberglass reinforced plastic grating, or FRP, is used primarily in industrial and, to a lesser extent, commercial applications. FRP grating exhibits many specialized features, which make it a beneficial alternative to traditional steel or aluminum grating. These include a high strength-to-weight ratio, high corrosion resistance, electrical and thermal non-conductivity, and molded-in color, which eliminates the need for repainting. FRP grating is used for platforms, walkways, stairs and structures for a variety of applications, including those in the food and beverage, chemical processing, water-wastewater, pulp and paper, and offshore oil and gas industries. Other structural composites include trench drains, channel drains, curbing and structural members.  Key attributes that differentiate competitors in these markets include product quality, depth of product line, and design-and-fabrication services. Our products for these applications are sold under our Fibergrate, Chemgrate, Corgrate, Fibregrid, Safe-T-Span, EnviroKerb, EnviroChannel, EnviroDeck and EnviroGrate brand names.

Sealants, Waterproofing, Concrete and Masonry Products.  Sealants, which are used primarily for commercial buildings, include urethane, silicone, latex, butyl and hybrid technology products, and are designed to be installed in construction joints for the purpose of providing a flexible and air and water-tight seal. Waterproof coatings, usually urethane or asphalt based, are installed in exposed and buried applications to waterproof and protect concrete. Structural and traffic tolerant membranes, expansion joints and bearings are used in a variety of applications for bridge deck construction and restoration and the protection and preservation of balconies, pedestrian walkways and parking structures.  In the concrete and masonry additives market, a variety of chemicals and fibers can be added to concrete and masonry to improve the processability, performance, or appearance of these products. Chemical admixtures for concrete are typically grouped according to their functional characteristics, such as water-reducers, set controllers, superplasticizers and air-entraining agents. Curing and sealing compounds, structural grouts, epoxy adhesives, injection resins, floor hardeners and toppings, joint fillers, industrial and architectural coatings, decorative color/stains/stamps, and a comprehensive selection of restoration materials are used to protect, repair or improve new or existing concrete structures used in the construction industry, and rehabilitation and repair of roads, highways, bridges and other infrastructure. The key attributes that differentiate competitors for these applications include quality assurance, on-the-job consultation and value-added, highly engineered products. We primarily offer products marketed under our Tremco, EUCO, Toxement, Viapol, Betumat, CAVE, Vandex, illbruck, Tamms, AlphaGuard, OneSeal, PowerPly, TremPly, TremLock, Vulkem, TREMproof, Dymonic, Increte, TUFF-N-DRI, Universal Sealants, Nufins, StructureCare, BridgeCare, Pitchmastic, Visul, Fibrecrete, Texacrete, Fibrejoint, Samiscreed, Prime Rez, Prime Gel, Prime Guard, Prime Coat, Prime Bond, Prime Flex, Watchdog Waterproofing, PSI, Tuf-Strand and Enviro-Dri brand names for this line of business.

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Intellectual Property

Our intellectual property portfolios include valuable patents, trade secrets and know-how, domain names, trademarks, trade and brand names. In addition, through our subsidiaries, we continue to conduct significant research and technology development activities. Among our most significant intangibles are our Rust-Oleum^®, Carboline^®, DAP^®, illbruck^® and Tremco^® trademarks.

Rust-Oleum Corporation and some of our other subsidiaries own more than 1,000 trademark registrations or applications in the United States and numerous other countries for the trademark “Rust-Oleum^®” and other trademarks covering a variety of rust-preventative, decorative, general purpose, specialty, industrial and professional products sold by Rust-Oleum Corporation and related companies.

Carboline Company and some of our other subsidiaries own more than 390 other trademark registrations or applications in the United States and numerous other countries covering the products sold by the Carboline Company and related companies, including two United States trademark registrations for the trademark “Carboline^®”.

DAP Products, Inc. and other subsidiaries of the Company own more than 410 trademark registrations or applications in the United States and numerous other countries for the “DAP^®” trademark, the “Putty Knife design” trademark and other trademarks covering products sold under the DAP brand and related brands.

Tremco Incorporated and some of our other subsidiaries own more than 85 registrations for the trademark “Tremco^®” in the United States and numerous countries covering a variety of roofing, sealants and coating products. There are also many other trademarks of Tremco Incorporated and some of our other subsidiaries that are the subject of registrations or applications in the United States and numerous other countries, bringing the total number of registrations and applications covering products sold under the Tremco brand and related brands to more than 525.

Our other principal product trademarks include: 2X Ultra Cover^®, AlphaGuard^®, Alumanation^®, Betumat™, B-I-N^®, Bitumastic^®, Bulls Eye 1-2-3^®, Chemgrate^®, Dri-Eaz, Dymonic^®, EnerEDGE^®, Enviro-Dri^®, EUCO^®, ExoAir^®, Expanko^®, Flecto™, Fibergrate^®, Floquil^®, Fritztile^®, Paraseal^®, Permaroof^®, Plasite^®, Proglaze^®, Sanitile^®, Solargard^®, Spectrem^®, Stonblend^®, Stonclad^®, Stonhard^®, Stonlux^®, Stonshield®, Testors^®, TREMproof^®, TUFF-N-DRI^®, Varathane^®, Viapol™, Vulkem^®, Watchdog Waterproofing^®, Woolsey^®, Zinsser^® and Z-Spar^®; and, in Europe, API™, Perlifoc^®, Hummervoll^®, USL^®, Nufins^®, Pitchmastic^®, Visul^®, Flowcrete™, Nullifire^™, Radglo^™ and Martin Mathys™. Our trademark registrations are valid for a variety of different terms of up to 15 years, and may be renewable as long as the trademarks continue to be used and all other local conditions for renewal are met.  Our trademark registrations are maintained and renewed on a regular basis as required.

Raw Materials

The cost and availability of raw materials materially impact our financial results.  We obtain raw materials from a number of suppliers.  Many of our raw materials are petroleum-based derivatives, minerals and metals.  The cost of raw materials has in the past experienced, and likely will continue to experience, periods of volatility which could increase the cost of manufacturing our products.  Under normal market conditions, these materials are generally available on the open market from a variety of producers; however, shortages are a possibility.  Interruptions in the supply of raw materials could have a significant impact on our ability to produce products. Recently, some raw material costs have increased significantly and we have experienced some tightening in supply.  Adequate supply of critical raw materials is managed by establishing contracts, procuring from multiple sources, and identifying alternative materials or technology; however, the unavailability of raw materials or increased prices of raw materials that we are unable to pass along to our customers could have a material adverse effect on our business, financial condition or results of operations.

Additionally, changes in international trade duties and other aspects of international trade policy, both in the U.S. and abroad, could materially impact the cost of raw materials. For example, in March 2018, the U.S. imposed a 10% tariff on all aluminum imports into the United States, with initial exemptions for aluminum imported from certain U.S. trading partners. We expect these types of actions to increase aluminum costs and decrease supply availability. Any increase in aluminum prices that is not offset by an increase in our prices could have an adverse effect on our business, financial position, results of operations or cash flows.

Seasonal Factors

Our business is dependent, to a significant extent, on external weather factors. We historically experience stronger sales and net income in our first, second and fourth fiscal quarters, which are the three month periods ending August 31, November 30 and May 31, respectively, while we have experienced weaker performance in our third fiscal quarter.

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Customers

Ten large consumer segment customers, such as DIY home centers, on a combined basis represented approximately 22%, 23% and 23% of our total net sales for each of the fiscal years ended May 31, 2018, 2017 and 2016, respectively. Except for sales to these customers, our business is not dependent upon any one customer or small group of customers, but is largely dispersed over a substantial number of customers.

Backlog

We historically have not had a significant backlog of orders, and we did not have a significant backlog at May 31, 2018.

Research and Development

Our research and development work is performed at various laboratory locations. During fiscal years 2018, 2017 and 2016, approximately $69.7 million, $64.9 million and $61.5 million, respectively, was charged to expense for research and development activities. In addition to this laboratory work, we view our field technical service as being integral to the success of our research activities. Our research and development activities and our field technical service costs are both included as part of our selling, general and administrative expenses.

Environmental Matters

We are subject to a broad range of laws and regulations dealing with environmental, health and safety issues for the various locations around the world in which we conduct our business. These laws and regulations include, but are not limited to, the following major areas:

• the sale, export, generation, storage, handling, use and transportation of hazardous materials;

• the emission and discharge of hazardous materials into the soil, water and air; and

• the health and safety of our employees.

For information regarding environmental accruals, see Note P, “Contingencies and Other Accrued Losses,” of the Notes to our Consolidated Financial Statements, which appears in the 2018 Annual Report to Stockholders, and is incorporated herein by reference. For more information concerning certain environmental matters affecting us, see “Item 3 — Legal Proceedings — Environmental Proceedings” in this Annual Report on Form 10-K.

Employees

As of May 31, 2018, we employed 14,540 persons, of whom approximately 823 were represented by unions under contracts which expire at varying times in the future.  We believe that all relations with employees and their unions are good.

Item 1A.  Risk Factors.

You should carefully consider the following risks, as well as the other information contained or incorporated by reference in this Annual Report on Form 10-K, in evaluating us, our business and your investment in us because these factors could cause our actual results or financial condition to differ materially from those projected in our forward-looking statements.

We are the subject of an ongoing SEC investigation, which could divert management’s focus, result in substantial investigation expenses and have an adverse impact on our reputation, financial condition, results of operations and cash flows.

We were notified by the SEC on June 24, 2014 that we are the subject of a formal investigation pertaining to the timing of our disclosure and accrual of loss reserves in fiscal 2013 with respect to the previously disclosed Department of Justice (“DOJ”) and General Services Administration (“GSA”) investigation into compliance issues relating to Tremco Roofing Division’s GSA contracts.  As previously disclosed, our audit committee completed an investigation into the facts and circumstances surrounding the timing of our disclosure and accrual of loss reserves with respect to the GSA and DOJ investigations, and determined to restate our financial results for the first, second and third quarters of fiscal 2013.  The restatement shifted accrual amounts among the three quarters, which had the effect of reducing net income by $7.2 million and $10.8 million for the quarterly periods ended August 31, 2012 and November 30, 2012, respectively, and increasing net income for the quarterly period ended February 28, 2013 by $18.0 million. These restatements had no impact on our audited financial results for the fiscal year ended May 31, 2013. The audit committee’s investigation concluded that there was no intentional misconduct on the part of any of our officers.

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In connection with the foregoing, on September 9, 2016, the SEC filed an enforcement action against us and our General Counsel.  We have cooperated with the SEC’s investigation and believe the allegations in the complaint mischaracterize both our and our General Counsel’s actions in connection with the matters related to our quarterly results in fiscal 2013 and are without merit.  Both we and our General Counsel filed motions to dismiss the complaint on February 24, 2017.  Those motions to dismiss the complaint were denied by the Court on September 29, 2017.  We and our General Counsel filed answers to the complaint on October 16, 2017.  Formal discovery commenced in January 2018.  We intend to continue to contest the allegations in the complaint vigorously.

The action by the SEC could result in sanctions against us and/or our General Counsel and could impose substantial additional costs and distractions, regardless of its outcome. We have determined that it is probable that we will incur a loss relating to this matter and have estimated a range of potential loss. We have accrued at the low end of the range of loss, as no amount within the range is more likely to occur, and no amount within the estimated range of loss would have a material impact on our consolidated financial condition, results of operations or cash flows.

We have incurred significant legal and accounting expenditures in connection with the SEC’s investigation.  We are unable to predict how long the SEC’s investigation will continue or whether, at the conclusion of its investigation, the SEC will seek to impose fines or file an enforcement action against us.  Any action by the SEC could result in sanctions against us and/or certain of our officers. A protracted enforcement action could impose substantial additional costs and distractions, regardless of its outcome.  Furthermore, publicity surrounding an enforcement action, even if ultimately resolved favorably for us, could have an adverse impact on our reputation, business, financial condition, results of operations or cash flows.

Activist investors and ongoing operating improvement initiatives could cause us to incur significant expenses and impact the trading value of our common stock.

We are implementing certain operating improvement initiatives, as described in a cooperation agreement with activist investors, that we expect will result in changes in our organizational and operational structure that will impact most of our operating companies.  We expect to continue implementation of these initiatives over the course of the next year, and may take additional actions in furtherance of these objectives during future periods.  We may incur significant expenses as a result of these actions, and we also may experience disruptions in our operations, decreased productivity and unanticipated employee turnover.  The occurrence of any of these events associated with our operating improvement initiatives could adversely affect our operating results and financial condition.  

The use of accounting estimates involves judgment and could impact our financial results.

The preparation of financial statements in conformity with Generally Accepted Accounting Principles (“GAAP”) requires us to make estimates and assumptions that affect reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and reported amounts of revenues and expenses during the reporting period.  Our most critical accounting estimates are described in Management’s Discussion and Analysis of Financial Condition and Results of Operations in RPM’s 2018 Annual Report to Stockholders, under, “Critical Accounting Policies and Estimates.”  Additionally, as discussed in Note P, “Contingencies and Other Accrued Losses,” of the Notes to Consolidated Financial Statements in the 2018 Annual Report to Stockholders, and is incorporated herein by reference, we make certain estimates, including decisions related to legal proceedings and various loss reserves.  These estimates and assumptions involve the use of judgment, and therefore, actual financial results may differ.  

Our operations have been and could continue to be adversely affected by global market and economicconditions in ways we may not be able to predict or control.

Global economic uncertainty continues to exist, including uncertainty relating to the United Kingdom’s vote to leave the European Union (“Brexit”). Our operations could be adversely affected by global economic conditions if global markets were to decline in the future, whether related to Brexit, recession and political unrest in Brazil, or otherwise. Any future economic declines may result in decreased revenue, gross margin, earnings or growth rates and difficulty in managing inventory levels and collection of customer receivables. We also have experienced, and expect to continue to experience, increased competitive pricing pressure. In addition, customer difficulties in the future could result from economic declines or issues arising from the cyclical nature of their business and, in turn, result in decreases in product demand, increases in bad debt write-offs, decreases in timely collection of accounts receivable and adjustments to our allowance for doubtful accounts receivable, resulting in material reductions to our revenues and net earnings.

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Global economic and capital market conditions may cause our access to capital to be more difficult in the future and/or costs to secure such capital more expensive.

We may need new or additional financing in the future to provide liquidity to conduct our operations, expand our business or refinance existing indebtedness. Any sustained weakness in general economic conditions and/or U.S. or global capital markets could adversely affect our ability to raise capital on favorable terms or at all. From time to time we have relied, and we may also rely in the future, on access to financial markets as a source of liquidity for working capital requirements, acquisitions and general corporate purposes. Our access to funds under our credit facility is dependent on the ability of the financial institutions that are parties to that facility to meet their funding commitments. Those financial institutions may not be able to meet their funding commitments if they experience shortages of capital and liquidity or if they experience excessive volumes of borrowing requests within a short period of time. Moreover, the obligations of the financial institutions under our credit facility are several and not joint and, as a result, a funding default by one or more institutions does not need to be made up by the others. Longer term volatility and continued disruptions in the capital and credit markets as a result of uncertainty, changing or increased regulation of financial institutions, reduced alternatives or failures of significant financial institutions could adversely affect our access to the liquidity needed for our businesses in the longer term. Such disruptions could require us to take measures to conserve cash until the markets stabilize or until alternative credit arrangements or other funding for our business needs can be arranged.

Volatility in the equity markets or interest rates could substantially increase our pension costs and required pension contributions.

We sponsor qualified defined benefit pension plans and various other nonqualified postretirement plans. The qualified defined benefit pension plans are funded with trust assets invested in a diversified portfolio of debt and equity securities and other investments. Among other factors, changes in interest rates, investment returns and the market value of plan assets can (i) affect the level of plan funding; (ii) cause volatility in the net periodic pension cost; and (iii) increase our future contribution requirements. A significant decrease in investment returns or the market value of plan assets or a significant decrease in interest rates could increase our net periodic pension costs and adversely affect our results of operations. A significant increase in our contribution requirements with respect to our qualified defined benefit pension plans could have an adverse impact on our cash flow.

The results of our annual testing and as-required interim testing of goodwill and other intangible assets have required, and in the future may require that we incur impairment charges.

As of May 31, 2018, we had approximately $1.8 billion in goodwill and other intangible assets. The Accounting Standards Codification (“ASC”) section 350 requires that goodwill be tested at least on an annual basis, or more frequently as impairment indicators arise, using either a qualitative assessment or a fair-value approach at the reporting unit level. We perform our annual required impairment tests, which involve the use of estimates related to the fair market values of the reporting units with which goodwill is associated, as of the first day of our fourth fiscal quarter. The evaluation of our long-lived assets for impairment includes determining whether indicators of impairment exist, which is a subjective process that takes into account both internal and external factors. Impairment assessment requires the use of significant judgment with regard to estimates and assumptions surrounding future results of operations and cash flows. During fiscal 2017, we identified certain factors that we considered important in assessing the requirement to perform an interim goodwill and intangible asset impairment evaluation for our Kirker reporting unit and our Restore indefinite tradename asset.  As a result of those interim impairment assessments, we recorded losses for goodwill and other intangible assets of $188.3 million relating to our Kirker reporting unit and $4.9 million relating to our Restore tradename, respectively. Our required annual impairment testing for goodwill and other intangible assets, which we performed during the fourth quarter of the fiscal years ended May 31, 2018, 2017 and 2016, did not result in any impairment loss.  In the future, if global economic conditions were to decline significantly, or if our reporting units experienced significant declines in business, we may incur additional, substantial goodwill and other intangible asset impairment charges. The amount of any such impairment charge could have a material adverse effect on our results of operations.

Our significant amount of indebtedness could have a material adverse impact on our business.

Our total debt levels were approximately $2.2 billion and $2.1 billion at May 31, 2018 and 2017, respectively, which compares with $1.6 billion in stockholders’ equity at May 31, 2018. Our level of indebtedness could have important consequences.  For example, it could:

• require us to dedicate a material portion of our cash flow from operations to make payments on our indebtedness, thereby reducing the cash flow available to fund working capital, capital expenditures, acquisitions, dividend payments, stock repurchases or other general corporate requirements;

• result in a downgrade of our credit rating, which would increase our borrowing costs, adversely affect our financial results, and make it more difficult for us to raise capital;

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• restrict our operational flexibility and reduce our ability to conduct certain transactions, since our credit facility contains certain restrictive financial and operating covenants;

• limit our flexibility to adjust to changing business and market conditions, which would make us more vulnerable to a downturn in general economic conditions; and

• have a material adverse effect on our short-term liquidity if large debt maturities occur in close succession.

We cannot assure you that our business always will be able to make timely or sufficient payments of our debt.  Should we fail to comply with covenants in our debt instruments, such failure could result in an event of default which, if not cured or waived, would have a material adverse effect on us.

Fluctuations in the supply and prices of raw materials may negatively impact our financial results.

We obtain raw materials from a number of suppliers.  Many of our raw materials are petroleum-based derivatives, minerals and metals.  The cost of raw materials has in the past experienced, and likely will continue to experience, periods of volatility which could increase the cost of manufacturing our products.  Under normal market conditions, these materials are generally available on the open market from a variety of producers; however, unexpected shortages are a possibility.  Interruptions in the supply of raw materials could have a significant impact on our ability to produce products. Recently, some raw material costs have increased significantly and we have experienced some tightening in supply.  Adequate supply of critical raw materials is managed by establishing contracts, procuring from multiple sources, and identifying alternative materials or technology; however, the unavailability of raw materials or increased prices of raw materials that we are unable to pass along to our customers could have a material adverse effect on our business, financial condition or results of operations.

The markets in which we operate are highly competitive and some of our competitorsare much larger than we are and may have greater financial resources than we do.

The markets in which we operate are fragmented, and we do not face competition from any one company across all of our product lines. However, any significant increase in competition, as a result of the consolidation of competitors, including the merger of Sherwin-Williams and Valspar, or otherwise, may cause us to lose market share or compel us to reduce prices to remain competitive, which could result in reduced gross profit margins. Increased competition may also impair our ability to grow or to maintain our current levels of revenues and earnings. Companies that compete in our markets include Akzo Nobel, Axalta, Ferro, GCP Applied Technologies, H.B. Fuller, Masco, PPG, and Sherwin-Williams. Several of these companies are much larger than we are and may have greater financial resources than we do. Increased competition with these companies could prevent the institution of price increases or could require price reductions or increased spending to maintain our market share, any of which could adversely affect our results of operations.

Our success depends upon our ability to attract and retain key employees and the succession of senior management.

Our success largely depends on the performance of our management team and other key employees. If we are unable to attract and retain talented, highly qualified senior management and other key people, our business, results of operations, cash flows and financial condition could be adversely affected. In addition, if we are unable to effectively provide for the succession of senior management, including our Chief Executive Officer, our business, results of operations, cash flows and financial condition may be adversely affected. While we follow a disciplined, ongoing succession planning process and have succession plans in place for senior management and other key executives, these do not guarantee that the services of qualified senior executives will continue to be available to us at particular moments in time.

We depend on a number of large customers for a significant portion of our net sales and, therefore, significant declines in the level of purchases by any of these key customers could harm our business.

Some of our operating companies, particularly in the consumer segment, face a substantial amount of customer concentration. Our key consumer segment customers include Ace Hardware, Cotter & Company, Do It Best, The Home Depot, Inc., Intergamma, Lowe’s, Menards, Orgill, Wal-Mart and W.W. Grainger. Sales to our ten largest consumer segment customers accounted for approximately 21%, 23% and 23% of our total net sales for each of the fiscal years ended May 31, 2018, 2017 and 2016, and 65%, 67% and 68%, respectively, of the consumer segment’s net sales for those same fiscal years. Sales to The Home Depot, Inc. represented less than 10% of our consolidated net sales for fiscal 2018, 2017 and 2016, and 28% of our consumer segment net sales for fiscal 2018, 2017 and 2016.  If we were to lose one or more of our key customers, or experience a delay or cancellation of a significant order, or incur a significant decrease in the level of purchases from any of our key customers, or experience difficulty in

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collecting amounts due from a key customer, our net revenues could decline materially and our operating results could be reduced materially.

Our business and financial condition could be adversely affected if we are unable to protect our material trademarks and other proprietary information or there is a loss in the actual or perceived value of our brands.

We have numerous valuable patents, trade secrets and know-how, domain names, trademarks and trade names, including certain marks that are significant to our business, which are identified under Item 1 of this Annual Report on Form 10-K. Despite our efforts to protect our trademarks and other proprietary rights from unauthorized use or disclosure, other parties may attempt to disclose, obtain or use our proprietary information or marks without our authorization. Unauthorized use of our trademarks, or disclosure, as the case may be, could negatively impact our business and financial condition.

Similarly, the reputations of our branded products depend on numerous factors, including the successful advertising and marketing of our brand names, consumer acceptance, continued trademark validity, the availability of similar products from our competitors, and our ability to maintain our products’ quality and technological advantages and claims of superior performance. A loss of a brand or in the actual or perceived value of our brands could limit or reduce the demand for our products, and could negatively impact our business and financial condition.

The chemical and construction products industries in which we operate expose us to inherent risks of legal and warranty claims and other litigation-related costs, which could adversely impact our business.

As a participant in the chemical and construction products industries, we face an inherent risk of legal claims in the event that the exposure to or failure, use or misuse of our products results, or is alleged to result, in bodily injury and/or property damage. In the course of our business we are subject to a variety of inquiries and investigations by regulators, as well as claims and lawsuits by private parties including those related to product liability, product claims regarding the use of asbestos or other chemicals or materials of concern, product warranty, environmental, contracts, intellectual property and commercial matters, which due to their uncertain nature may result in losses, some of which may be material.  We are defending claims, and could be subject to future claims, in which significant financial damages are alleged.  These claims could consume material financial resources to defend and be a distraction to management.  Some, but not all, of such claims are insured.  We offer warranties on many of our products, as well as long term warranty programs at certain of our businesses and, as a result, from time to time we may experience higher levels of warranty expense, which is typically reflected in selling, general and administrative expenses. The nature and extent to which we use hazardous or flammable materials in our manufacturing processes creates risk of damage to persons and property that, if realized, could be material.

Compliance with environmental, health and safety laws and regulations could subject us to unforeseen future expenditures or liabilities, which could have a material adverse effect on our business.

We are subject to numerous, complicated and often increasingly stringent environmental, health and safety laws and regulations in the jurisdictions where we conduct business. Governmental and regulatory authorities impose various laws and regulations on us that relate to environmental protection, the use, sale and export of certain chemicals or hazardous materials, and various health and safety matters, including the discharge of pollutants into the air and water, the handling, use, treatment, storage and clean-up of solid and hazardous wastes, the use of certain chemicals in product formulations, and the investigation and remediation of soil and groundwater affected by hazardous substances. These laws and regulations include the Clean Air Act, the Clean Water Act, RCRA, CERCLA, TSCA, and various other federal, state, provincial, local and international statutes. These laws and regulations often impose strict, retroactive and joint and several liability for the costs of, and damages resulting from, cleaning up our or our predecessors’ past or present facilities and third party disposal sites. We could be subject to future liability as yet unknown and we are currently undertaking remedial activities at a number of properties.

We have not always been and may not always be in full compliance with all environmental, health and safety laws and regulations in every jurisdiction in which we conduct our business. In addition, if we violate or fail to comply with environmental, health and safety laws (including related to permitting), we could be fined or otherwise sanctioned by regulators, including enjoining or curtailing operations, remedial or corrective measures, installations of pollution control equipment, or other actions. We also could be liable for consequences arising out of human exposure to hazardous substances relating to our products or operations. Accordingly, we cannot guarantee that we will not be required to make additional expenditures to remain in or to achieve compliance with environmental, health or safety laws in the future or that any such additional expenditures will not have a material adverse effect on our business, financial condition, results of operations or cash flows. If regulatory permits or registrations are delayed, restricted, or rejected, subsequent operations at our businesses could be delayed or restricted, which could have an adverse effect on our results of operations.

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Our businesses are subject to varying domestic and foreign laws and regulations that may restrict or adversely impact our ability to conduct our business.

Our businesses are subject to varying domestic and foreign laws and regulations that may restrict or adversely impact our ability to conduct our business.  These include securities, environmental, health, safety, tax, competition and anti-trust, trade controls, data security, anti-corruption, anti-money laundering, employment and privacy laws and regulations.  These laws and regulations change from time to time and thus may result in increased costs to us related to our compliance therewith.  From time to time regulators review our compliance with applicable laws. We have not always been, and may not always be, in full compliance with all laws and regulations applicable to our business and, thus enforcement actions, fines and private litigation claims and damages, which could be material may occur, notwithstanding our belief that we have in place appropriate risk management and compliance programs to mitigate these risks.

If our efforts in acquiring and integrating other companies or product lines or establishing joint ventures fail, our business may not grow.

As an important part of our growth strategy, we intend to continue pursuing acquisitions of complementary businesses or products and creating joint ventures. Our ability to continue to grow in this manner depends upon our ability to identify, negotiate and finance suitable acquisitions or joint venture arrangements. Execution of our acquisition strategy with respect to some companies or product lines could fail or could result in unanticipated costs to us that were not apparent despite our due diligence efforts, either of which could hinder our growth or adversely impact our results of operations.  In addition, acquisitions and their subsequent integration involve a number of risks, including, but not limited to:

• inaccurate assessments of disclosed liabilities and the potentially adverse effects of undisclosed liabilities;

• unforeseen difficulties in assimilating acquired companies, their products, and their culture into our existing business;

• unforeseen delays in realizing the benefits from acquired companies or product lines, including projected efficiencies, cost savings, revenue synergies and profit margins;

• unforeseen diversion of our management’s time and attention from other business matters;

• unforeseen difficulties resulting from insufficient prior experience in any new markets we may enter;

• unforeseen difficulties in retaining key employees and customers of acquired businesses; and

• increases in our indebtedness and contingent liabilities, which could in turn restrict our ability to raise additional capital when needed or to pursue other important elements of our business strategy.

We derive a significant amount of our revenues from foreign markets, which subjects us to additional business risks that could adversely affect our results of operations.

Our foreign manufacturing operations accounted for approximately 35.5% of our net sales for the fiscal year ended May 31, 2018, not including exports directly from the U.S. which accounted for approximately 1.5% of our net sales for fiscal 2018. We plan to continue to grow our international operations and the growth and maintenance of such operations could be adversely affected by Brexit, changes in political and economic conditions, inflation rates, trade protection measures, restrictions on foreign investments and repatriation of earnings, changing intellectual property rights, difficulties in staffing and managing foreign operations and changes in regulatory requirements that restrict the sales of our products or increase our costs. Our ability to effectively manage our foreign operations may pose significant risks that could adversely affect our results of operations, cash flow, liquidity or financial condition.  

Significant foreign currency exchange rate fluctuations may harm our financial results.

We conduct business in various regions throughout the world and are therefore subject to market risk due to changes in the exchange rates of foreign currencies in relation to the U.S. dollar.  Because our consolidated financial statements are presented in U.S. dollars, increases or decreases in the value of the U.S. dollar relative to other currencies in which we transact business could materially adversely affect our net revenues, operating income and the carrying values of our assets located outside the U.S.  For example, Brexit caused significant volatility in global stock markets and currency exchange rate fluctuations that resulted in the strengthening of the U.S. dollar against foreign currencies in which we conduct business.  Such strengthening of the U.S. dollar relative to other currencies may adversely affect our operating results.

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We could be adversely affected by violations of the U.S. Foreign Corrupt Practices Act and similar anti-bribery laws of other countries, as well as trade sanctions administered by the office of Foreign Assets Control and the Department of Commerce.

The U.S. Foreign Corrupt Practices Act (‘‘FCPA’’) and similar anti-bribery laws of other countries generally prohibit companies and their intermediaries from making improper payments to governmental officials or others for the purpose of obtaining or retaining business or for other unfair advantage. Our policies mandate compliance with these anti-bribery laws. We operate in many parts of the world that have experienced governmental corruption to some degree and, in certain circumstances, strict compliance with anti-bribery laws may conflict with local customs and practices.

We are required to comply with U.S. regulations on trade sanctions and embargoes administered by the U.S. Department of the Treasury, Office of Foreign Assets Control (“OFAC”), the Commerce Department and similar multi-national bodies and governmental agencies worldwide, which are complex and constantly changing.  A violation thereof could subject us to regulatory enforcement actions, including a loss of export privileges and significant civil and criminal penalties and fines.

Although we have internal controls and procedures designed to ensure compliance with these laws, there can be no assurance that our controls and procedures will prevent a violation of these laws.

Violations of these laws, or allegations of such violations, could disrupt our business and result in a material adverse effect on our results of operations, financial condition, and cash flows.

Our operations are subject to the effect of global tax law changes, some of which have been, and may be in the future, retroactive in application.

Our operations are subject to various federal, state, local and foreign tax laws and regulations which govern, among other things, taxes on worldwide income. Any potential tax law changes may, for example, increase applicable tax rates, have retroactive application, or impose stricter compliance requirements in the jurisdictions in which we operate, which could reduce our consolidated net earnings.

In response to, for instance, an economic crisis or recession, governments may revise tax laws, regulations or official interpretations in ways that could have a significant impact on us, including modifications that could, for example, reduce the profits that we can effectively realize from our non-U.S. operations, or that could require costly changes to those operations, or the way in which they are structured. If changes in tax laws, regulations or interpretations were to significantly increase the tax rates on non-U.S. income, our effective tax rate could increase, our profits could be reduced, and if such increases were a result of our status as a U.S. company, could place us at a disadvantage to our non-U.S. competitors if those competitors remain subject to lower local tax rates.

On December 22, 2017, U.S. tax reform legislation, commonly known as the Tax Cuts and Jobs Act (the “Act”) was signed into law. The Act makes substantial changes to U.S. tax law, including a reduction in the corporate tax rate, a limitation on deductibility of interest expense, the allowance of immediate expensing of capital expenditures, deemed repatriation of foreign earnings and significant changes to the taxation of foreign earnings post the enactment date. The Act contains numerous, complex provisions impacting U.S. multinational companies, and we continue to review and assess the legislative language and its potential impact on us. The full extent of the impact remains uncertain at this time, and our current interpretations of, and assumptions regarding, the Act are subject to additional regulatory or administrative developments, including any regulations or other guidance promulgated by the Internal Revenue Service. As a result, the Act, including any regulations or other guidance promulgated by the Internal Revenue Service, and other tax laws could have significant effects on us, some of which may be adverse and could materially and adversely impact our financial condition, results of operations and cash flows.

We could be adversely affected by failure to comply with federal, state and local government procurement regulations and requirements.

We have contracts with and supply product to federal, state and local governmental entities and their contractors, and are required to comply with specific procurement regulations and other requirements relating to those contracts and sales.  Requirements in our contracts and those requirements flowed down to us in our capacity as a subcontractor or supplier, although customary in government contracts, may impact our performance and compliance costs.  Failure to comply with these regulations and requirements or to make required disclosures under contract could result in reductions of the value of contracts, contract modifications or termination for cause, adverse past performance ratings, actions under a federal or state false claims statute, suspension or debarment from government contracting or subcontracting for a period of time and the assessment of penalties and fines, any of which could negatively impact our results of operations and financial condition and could have a negative impact on our reputation and ability to procure other government contracts in the future.

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Terrorist activities and other acts of violence or war, natural disasters and other disruptions have negatively impacted in the past and could negatively impact in the future the U.S. and foreign countries, the financial markets, the industries in which we compete, our operations and profitability.

Terrorist activities and natural disasters have contributed to economic instability in the U.S. and elsewhere, and further acts of terrorism, cyber-terrorism, violence, war or natural disasters could affect the industries in which we compete, our ability to purchase raw materials or make, sell or distribute products, which could have a material adverse impact on our financial condition and results of operations.

Data privacy and data security considerations could impact our business.

The interpretation and application of data protection laws in the U.S., Europe, including but not limited to the General Data Protection Regulation (the “GDPR”), and elsewhere are uncertain and evolving. It is possible that these laws may be interpreted and applied in a manner that is inconsistent with our data practices.  Complying with these various laws is difficult and could cause us to incur substantial costs or require us to change our business practices in a manner adverse to our business.  Further, although we are implementing internal controls and procedures designed to ensure compliance with the GDPR and other privacy-related laws, rules and regulations (collectively, the “Data Protection Laws”), there can be no assurance that our controls and procedures will enable us to be fully compliant with all Data Protection Laws.

Despite our efforts to protect sensitive information and confidential and personal data, comply with applicable laws, rules and regulations and implement data security measures, our facilities, and systems may be vulnerable to security breaches and other data loss, including cyber-attacks and, in fact, we have experienced data security incidents that have not had a material impact on our financial results.  In addition, it is not possible to predict the impact on our business of the future loss, alteration or misappropriation of information in our possession related to us, our employees, former employees, customers, suppliers or others. This could lead to negative publicity, legal claims, theft, modification or destruction of proprietary information or key information, damage to or inaccessibility of critical systems, manufacture of defective products, production downtimes, operational disruptions and other significant costs, which could adversely affect our reputation, financial condition and results of operations.

Although we have insurance, it may not cover every potential risk associated with our operations.

Although we maintain insurance of various types to cover many of the risks and hazards that apply to our operations, our insurance may not cover every potential risk associated with our operations. The occurrence of a significant adverse event, the risks of which are not fully covered by insurance, could have a material adverse effect on our financial condition and results of operations. Moreover, no assurance can be given that we will be able to maintain adequate insurance in the future at rates we consider reasonable.

Adverse weather conditions may reduce the demand for some of our products and could have a negative effect on our sales.

From time to time, adverse weather conditions in certain parts of the U.S. and other countries in which we do business have had an adverse effect on our sales of paint, coatings, roofing, construction products and related products. For example, unusually cold and rainy weather, especially during the general construction and exterior painting season, could have an adverse effect on sales of such products. As a result, we have historically experienced weaker sales and net income in our third fiscal quarter (December through February) in comparison to our performance during our other fiscal quarters.

Item 1B.  Unresolved Staff Comments.

Not Applicable.

Item 2.  Properties.

Our corporate headquarters and a plant and offices for one subsidiary are located on a 119-acre site, which we own in Medina, Ohio. As of May 31, 2018, our operations occupied a total of approximately 16.6 million square feet, with the majority, approximately 13.9 million square feet, devoted to manufacturing, assembly and storage. Of the approximately 16.6 million square feet occupied, approximately 8.5 million square feet are owned and approximately 8.1 million square feet are occupied under operating leases.

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Set forth below is a description, as of May 31, 2018, of our principal facilities which we believe are material to our operations:

		Approximate
		Square Feet Of		Leased or
Location	Business/Segment	Floor Space		Owned
Hertogenbosch, Netherlands	Rust-Oleum (Consumer)		507,400	Owned
Capacava, Brazil	Euclid (Industrial)		325,000	Owned
Pleasant Prairie, Wisconsin	Rust-Oleum (Consumer)		303,200	Owned
Cleveland, Ohio	Day-Glo (Specialty)		224,624	Owned
Toronto, Ontario, Canada	Tremco (Industrial)		207,160	Owned
LaFayette, Georgia	Euclid (Industrial)		201,109	Owned
Cleveland, Ohio	Euclid (Industrial)		230,591	Owned
Cleveland, Ohio	Tremco (Industrial)		160,300	Owned
Bodenwoehr, Germany	illbruck (Industrial)		151,171	Owned
Baltimore, Maryland	DAP (Consumer)		144,200	Owned
Hagerstown, Maryland	Rust-Oleum (Consumer)		143,000	Owned
Arkel, Netherlands	illbruck (Industrial)		140,067	Owned
Tipp City, Ohio	DAP (Consumer)		140,000	Owned
Zelem, Belgium	Rust-Oleum (Consumer)		136,150	Owned
Attelboro, Massachusetts	Mantrose (Specialty)		133,650	Owned
Hudson, North Carolina	Wood Finishes Group (Specialty)		129,300	Owned
Cherry Hill, New Jersey	Stonhard (Industrial)		121,790	Owned
Lier, Norway	Carboline (Industrial)		116,953	Owned
Lake Charles, Louisiana	Carboline (Industrial)		114,287	Owned
Birtley, United Kingdom	Rust-Oleum (Consumer)		112,354	Owned
Somerset, New Jersey	Rust-Oleum (Consumer)		110,000	Owned
Wigan, Lanc, United Kingdom	illbruck (Industrial)		106,020	Owned
Maple Shade, New Jersey	Stonhard (Industrial)		77,500	Owned
Dallas, Texas	DAP (Consumer)		74,000	Owned
Ellaville, Georgia	TCI (Specialty)		55,000	Owned
Kenosha, Wisconsin	Rust-Oleum (Consumer)		850,243	Leased
Martinsburg, West Virginia	Rust-Oleum (Consumer)		742,938	Leased
Riverside, California	Rust-Oleum (Consumer)		309,535	Leased
Cleveland, Ohio	Tremco (Industrial)		298,175	Leased
Vaughan, Ontario, Canada	Rust-Oleum (Consumer)		213,847	Leased
Baltimore, Maryland	DAP (Consumer)		244,495	Leased
Garland, Texas	DAP (Consumer)		130,900	Leased
Burlington, Washington	Legend Brands (Specialty)		113,875	Leased
Lake Charles, Louisiana	Carboline (Industrial)		100,035	Leased
Bodenwoehr, Germany	illbruck (Industrial)		100,000	Leased

We lease certain of our properties under long-term leases. Some of these leases provide for increased rent based on an increase in the cost-of-living index. For information concerning our rental obligations, see Note M, “Leases” of the Notes to Consolidated Financial Statements, which appears in the 2018 Annual Report to Stockholders and is incorporated herein by reference. Under many of our leases, we are obligated to pay certain varying insurance costs, utilities, real property taxes and other costs and expenses.

We believe that our manufacturing plants and office facilities are well maintained and suitable for our operations.

17

Item 3.  Legal Proceedings.

Environmental Proceedings

Following an audit of Rust-Oleum Corporation’s Annual Quantity and Emissions Reports, the State of California’s South Coast Air Quality Management District (the “AQMD”) issued a Notice of Violation to Rust-Oleum alleging violations of AQMD’s Rule 314 (relating to fees for architectural coatings) and Rule 1113 (relating to limits on volatile organic compound content in architectural coatings).  Regarding the foregoing allegations, Rust-Oleum entered into a Settlement Agreement with AQMD dated March 16, 2018 in the amount of $454,829, which amount included monetary penalties and investigative costs.

As previously reported, several of our subsidiaries are, from time to time, identified as a “potentially responsible party” under the federal Comprehensive Environmental Response, Compensation and Liability Act and similar local environmental statutes. In some cases, our subsidiaries are participating in the cost of certain clean-up efforts or other remedial actions. Our share of such costs to date, however, has not been material and management believes that these environmental proceedings will not have a material adverse effect on our consolidated financial condition or results of operations. See “Item 1 — Business — Environmental Matters,” in this Annual Report on Form 10-K.

Item 4.  Mine Safety Disclosures

Not applicable.

PART II

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

The information set forth at page 72 of the 2018 Annual Report to Stockholders under the heading, “Quarterly Stock Price and Dividend Information” is incorporated herein by reference.

The following table presents information about repurchases of RPM International Inc. Common Stock made by us during the fourth quarter of fiscal 2018:

Period	Total Number of Shares Purchased (1)		Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs		Maximum Number of Shares that May Yet be Purchased Under the Plans or Programs (2)
March 1, 2018 through March 31, 2018		—	$	—		—		—
April 1, 2018 through April 30, 2018		28,316	$	48.30		—		—
May 1, 2018 through May 31, 2018		14,477	$	49.64		—		—
Total - Fourth Quarter		42,793	$	48.75		—		—

(1) All of the shares of common stock reported as purchased are attributable to shares of common stock that were disposed of back to us in satisfaction of tax obligations related to the vesting of restricted stock which was granted under RPM International Inc.'s Amended and Restated 2014 Omnibus Equity and Incentive Plan and 2007 Restricted Stock Plan.

(2) Refer to Note I of the Notes to Consolidated Financial Statements for further information regarding our stock repurchase program.

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Item 6.  Selected Financial Data.

The following table sets forth our selected consolidated financial data for each of the five years during the period ended May 31, 2018.

	Fiscal Years Ended May 31,
	2018			2017			2016			2015			2014
(Amounts in thousands, except per share and    percentage data)
Net sales	$	5,321,643		$	4,958,175		$	4,813,649		$	4,594,550		$	4,376,353
Income before income taxes		417,048			244,333			483,466			453,253			424,487
Net income		339,257			184,671			357,458			228,328			305,984
Return on sales %		6.4	%		3.7	%		7.4	%		5.0	%		7.0	%
Basic earnings per share attributable to RPM International Inc.    Stockholders	$	2.55		$	1.37		$	2.70		$	1.81		$	2.20
Diluted earnings per share attributable to RPM International Inc.    Stockholders		2.50			1.36			2.63			1.78			2.18
Total RPM International Inc. stockholders’ equity		1,630,773			1,436,061			1,372,335			1,291,392			1,382,844
Total RPM International Inc. stockholders' equity per share		12.43			10.99			10.61			9.94			10.68
Return on total RPM International Inc. stockholders’ equity %		22.1	%		13.2	%		26.8	%		17.1	%		23.7	%
Average shares outstanding		131,179			130,662			129,383			129,933			129,438
Cash dividends paid	$	167,476		$	156,752		$	144,350		$	136,179		$	125,743
Cash dividends declared per share		1.260			1.175			1.085			1.020			0.945
Retained earnings		1,342,736			1,172,442			1,147,371			936,996			833,691
Working capital		1,464,205			1,162,042			1,133,157			1,193,612			1,122,386
Total assets		5,271,822			5,090,449			4,764,969			4,680,062			4,365,657
Long-term debt		2,170,643			1,836,437			1,635,260			1,639,859			1,333,257
Depreciation and amortization		128,499			116,773			111,039			99,176			90,069
Cash from operating activities		390,383			386,127			474,706			330,448			278,149
Cash (used for) investing activities		(261,193	)		(339,665	)		(165,866	)		(559,453	)		(149,711	)
Cash (used for) from financing activities		(239,376	)		35,971			(206,105	)		110,193			(137,243	)

Note: Acquisitions made by us during each of the periods presented and the reconsolidation of SPHC, which occurred on January 1, 2015, may impact comparability from year to year. (See Note A, "Summary of Significant Accounting Policies," to the Consolidated Financial Statements).

Item 7.  Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The information required by this item is set forth at pages 22 through 34 of the 2018 Annual Report to Stockholders, which information is incorporated herein by reference.

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

The information required by this item is set forth at page 34 of the 2018 Annual Report to Stockholders, which information is incorporated herein by reference.

Item 8.  Financial Statements and Supplementary Data.

The information required by this item is set forth at pages 35 through 71 and 74 of the 2018 Annual Report to Stockholders, which information is incorporated herein by reference.

Item 9.  Changes in and Disagreements With Accountants on Accounting and Financial Disclosure.

None.

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Item 9A.  Controls and Procedures.

(a) Evaluation of disclosure controls and procedures.

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, after evaluating the effectiveness of our disclosure controls and procedures (as defined in Exchange Act Rule 13a-15) as of May 31, 2018 (the “Evaluation Date”), have concluded that as of the Evaluation Date, our disclosure controls and procedures were effective in ensuring that information required to be disclosed by us in the reports we file or submit under the Exchange Act (1) is recorded, processed, summarized and reported, within the time periods specified in the Commission’s rules and forms, and (2) is accumulated and communicated to our management, including the Chief Executive Officer and the Chief Financial Officer, as appropriate to allow for timely decisions regarding required disclosure.

(b) Management’s Report on Internal Control over Financial Reporting.

Management’s Report on Internal Control Over Financial Reporting and the attestation report of Deloitte & Touche LLP, our independent registered public accounting firm, are set forth at pages 73 and 75, respectively, of the 2018 Annual Report to Stockholders, which reports are incorporated herein by reference.

(c) Changes in internal control over financial reporting.

There were no changes in our internal control over financial reporting that occurred during the fourth fiscal quarter ended May 31, 2018 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Item 9B.  Other Information.

On July 17, 2018, the Company’s Board of Directors elected Frank C. Sullivan as the Company’s Chairman, President and Chief Executive Officer.

Mr. Sullivan, age 57, was previously serving as the Company’s Chairman and Chief Executive Officer.  For information regarding Mr. Sullivan’s prior business experience, see Part III, Item 10, “Directors, Executive Officers and Corporate Governance” contained in this Annual Report on Form 10-K.

There are no arrangements or undertakings between Mr. Sullivan and any other persons pursuant to which he was selected to serve as the Company’s Chairman, President and Chief Executive Officer, nor are there any family relationships between Mr. Sullivan and any of the Company’s directors or executive officers.  Other than as set forth under the heading “Related Person Transactions” at page 56 of the Company’s Definitive Proxy Statement, dated August 24, 2017, Mr. Sullivan has no material interest in any transactions, relationships or arrangements with the Company that would require disclosure under Item 404(a) of Regulation S-K promulgated under the Exchange Act.

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PART III

Item 10.  Directors, Executive Officers and Corporate Governance.

Information required by this item as to our Directors appearing under the caption “Election of Directors” in our 2018 Proxy Statement is incorporated herein by reference. Information required by Item 405 of Regulation S-K is set forth in the 2018 Proxy Statement under the heading “Section 16(a) Beneficial Ownership Reporting Compliance,” which information is incorporated herein by reference. Information required by Items 406, 407(c)(3), 407(d)(4) and 407(d)(5) of Regulation S-K is set forth in the 2018 Proxy Statement under the heading “Information Regarding Meetings and Committees of the Board of Directors,” which information is incorporated herein by reference.

The Charters of the Audit Committee, Compensation Committee and Governance and Nominating Committee and the Corporate Governance Guidelines and “The Values & Expectations of 168” (our code of business conduct and ethics) are available on our website at www.rpminc.com and in print to any stockholder who requests a copy. Requests for copies should be directed to Manager of Investor Relations, RPM International Inc., P.O. Box 777, Medina, Ohio 44258. We intend to disclose any amendments to our code of business conduct and ethics, and any waiver of our code of business conduct and ethics granted to any of our Directors or Executive Officers on our website.

The name, age and positions of each of our Executive Officers as of July 23, 2018 are as follows:

Name	Age	Position and Offices Held
Frank C. Sullivan	57	Chairman, President and Chief Executive Officer
Russell L. Gordon	52	Vice President and Chief Financial Officer
Edward W. Moore	61	Senior Vice President, General Counsel and Chief Compliance Officer
Janeen B. Kastner	51	Vice President – Corporate Benefits and Risk Management
Matthew T. Ratajczak	50	Vice President – Global Tax and Treasurer
Barry M. Slifstein	58	Vice President – Investor Relations
Keith R. Smiley	56	Vice President – Finance and Controller

Frank C. Sullivan was elected Chairman of the Board in 2008 and Chief Executive Officer in 2002. From 1999 to 2008, Mr. Sullivan served as our President, and again was elected President in 2018, and was Chief Operating Officer from 2001 to 2002. From 1995 to 1999, Mr. Sullivan served as Executive Vice President, and was Chief Financial Officer from 1993 to 1999. Mr. Sullivan served as a Vice President from 1991 to 1995. Prior thereto, he served as our Director of Corporate Development from 1989 to 1991. Mr. Sullivan served as Regional Sales Manager from 1987 to 1989 of AGR Company, an Ohio General Partnership formerly owned by us. Prior thereto, Mr. Sullivan was employed by First Union National Bank from 1985 to 1987 and Harris Bank from 1983 to 1985.

Russell L. Gordon was elected Vice President and Chief Financial Officer in 2012.  Prior to that time, Mr. Gordon was the Company’s Vice President – Corporate Planning from 2007 to 2012.  Mr. Gordon joined the Company as Director of Corporate Development in 1995.  Prior to joining the Company, Mr. Gordon held various financial positions in corporate treasury and control as well as in the Specialty Chemicals Division of Goodrich Corporation.  He previously was an industrial engineer at VLSI Technology Inc.

Edward W. Moore was elected Senior Vice President, General Counsel, Chief Compliance Officer and Secretary in 2013.  He had been the Company’s Vice President, General Counsel and Secretary since 2007, adding the title of Chief Compliance Officer in 2011.  From 1982 to 1989, Mr. Moore was an associate attorney, and from 1990 to 2006, a partner at Calfee, Halter & Griswold LLP.  While at Calfee, Mr. Moore served in various capacities, including as a member of the Executive Committee, Chair of the Associates Committee, and Co-Chair of the Securities and Capital Markets Group.

Janeen B. Kastner was elected Vice President ― Corporate Benefits and Risk Management in 2007.  Ms. Kastner had been our Director of Human Resources and Administration since 2000.  Ms. Kastner joined the Company in 1997 as Manager of Benefits and Insurance.  Prior to joining the Company, Ms. Kastner was a pension plan consultant with Watson Wyatt & Co.

Matthew T. Ratajczak was elected Vice President – Global Tax and Treasurer in 2012.  Mr. Ratajczak joined the Company as director of taxes in 2004 and was elected Vice President – Global Taxes in 2005.  Prior to joining the Company, he was Director of Global Tax for Noveon, Inc., a specialty chemicals company, and began his career with Ernst & Young LLP.

21

Barry M. Slifstein was elected Vice President – Investor Relations in 2012.  Mr. Slifstein was Vice President and Controller from 2008 to 2012.  Previously, Mr. Slifstein was Vice President of Finance, Chief Financial Officer and Treasurer of our DAP Products Inc. operating group, where he was employed from 1999 to 2008.  Mr. Slifstein was Finance Director of Alpharma USPD Inc., a global specialty pharmaceutical company from 1998 to 1999, and Corporate Controller for Luitpold Pharmaceuticals Inc., a manufacturer and distributor of various drugs and medical devices from 1995 to 1998.

Keith R. Smiley was elected Vice President – Finance and Controller in 2012.  Prior to that time, Mr. Smiley was the Company’s Vice President – Treasurer and Assistant Secretary since 1999, and served as Treasurer of the Company since 1997.  From 1993 to 1997, Mr. Smiley was the Company’s Controller.  Prior to joining the Company, he was associated with Ciulla, Smith and Dale, LLP., an accounting firm.

Item 11.  Executive Compensation.

The information required by this item is set forth in the 2018 Proxy Statement under the headings “Executive Compensation” and “Director Compensation,” which information is incorporated herein by reference.

Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The information required by this item is set forth in the 2018 Proxy Statement under the headings “Stock Ownership of Principal Holders and Management” and “Equity Compensation Plan Information,” which information is incorporated herein by reference.

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

The information required by this item is set forth in the 2018 Proxy Statement under the headings “Related Person Transactions” and “Information Regarding Meetings and Committees of the Board of Directors,” which information is incorporated herein by reference.

Item 14.  Principal Accountant Fees and Services.

The information required by this item is set forth in the 2018 Proxy Statement under the heading “Independent Registered Public Accounting Firm Services and Related Fee Arrangements,” which information is incorporated herein by reference.

22

PART IV

Item 15.  Exhibits and Financial Statement Schedules.

(a) The following documents are filed as part of this 2018 Annual Report on Form 10-K:

1. Financial Statements.  The following consolidated financial statements of RPM and the reports of our independent registered public accounting firms thereon, included in our 2018 Annual Report to Stockholders on pages 35 through 71 and 74, are incorporated by reference in Item 8:

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets —

May 31, 2018 and 2017

Consolidated Statements of Income —

fiscal years ended May 31, 2018, 2017 and 2016

Consolidated Statements of Comprehensive Income —

fiscal years ended May 31, 2018, 2017 and 2016

Consolidated Statements of Cash Flows —

fiscal years ended May 31, 2018, 2017 and 2016

Consolidated Statements of Stockholders’ Equity —

fiscal years ended May 31, 2018, 2017 and 2016

Notes to Consolidated Financial Statements (including Unaudited Quarterly Financial Information)

2. Financial Statement Schedules.  The following consolidated financial statement schedule of RPM and the report of our independent registered public accounting firm thereon are filed as part of this Annual Report on Form 10-K and should be read in conjunction with our consolidated financial statements included in our 2018 Annual Report to Stockholders:

Schedule	Page or Exhibit No.
Schedule II — Valuation and Qualifying Accounts and Reserves	S-1

All other schedules have been omitted because they are not applicable or not required, or because the required information is included in the consolidated financial statements or notes thereto.

3. Exhibits.  See the Index to Exhibits at page 24 of this Annual Report on Form 10-K.

23

RPM INTERNATIONAL INC.

Exhibit Index

Exhibit		Incorporated by reference herein
Number	Description	Form	Date
3.1	Amended and Restated Certificate of Incorporation of the Company	Registration Statement on Form S-8 (File No. 333-101501)	November 27, 2002
3.2	Amended and Restated By-Laws of the Company	Current Report on Form 8-K (File No. 001-14187)	April 27, 2009
4.1	Specimen Certificate of Common Stock, par value $0.01 per share, of the Company	Registration Statement on Form S-8 (File No. 333-101501)	November 27, 2002
4.2	Rights Agreement, dated April 21, 2009, by and between the Company and National City Bank, as Rights Agent	Current Report on Form 8-K (File No. 001-14187)	April 27, 2009
4.3	Indenture, dated as of February 14, 2008, between the Company, as issuer, and The Bank of New York Trust Company, as trustee	Registration Statement on Form S-3 (File No. 333-173395)	April 8, 2011
4.3.1	Form of 6.50% Senior Note Due 2018	Current Report on Form 8-K (File No. 001-14187)	February 20, 2008
4.4	Officers’ Certificate and Authentication Order dated October 9, 2009 for the 6.125% Notes due 2019 (which includes the form of Note) issued pursuant to the Indenture, dated as of February 14, 2008, between the Company and The Bank of New York Mellon Trust Company, N.A.	Current Report on Form 8-K (File No. 001-14187)	October 9, 2009
4.5	Officers’ Certificate and Authentication Order dated May 27, 2011 for the 6.125% Notes due 2019 (which includes the form of Note) issued pursuant to the Indenture, dated as of February 14, 2008, between the Company and The Bank of New York Mellon Trust Company, N.A.	Current Report on Form 8-K (File No. 001-14187)	May 27, 2011
4.6	Officers’ Certificate and Authentication Order dated October 23, 2012 for the 3.450% Notes due 2022 (which includes the form of Note) issued pursuant to the Indenture, dated as of February 14, 2008, between the Company and The Bank of New York Mellon Trust Company, N.A.	Current Report on Form 8-K (File No. 001-14187)	October 23, 2012
4.7	First Supplemental Indenture, dated December 9, 2013, for the 2.25% Convertible Senior Notes due 2020 (which includes the form of Note), to the Indenture dated as of February 14, 2008, between the Company and The Bank of New York Mellon Trust Company, N.A.	Current Report on Form 8-K (File No. 001-14187)	December 11, 2013
4.8	Indenture, dated as of April 8, 2014, between the Company and Wells Fargo Bank, National Association	Registration Statement on Form S-3 (File No. 333-195132)	April 8, 2014

24

Exhibit		Incorporated by reference herein
Number	Description	Form	Date
4.9	Officers’ Certificate and Authentication Order dated May 29, 2015 for the 5.250% Notes due 2045 (which includes the form of Note) issued pursuant to the Indenture dated as of April 8, 2014, between the Company and Wells Fargo Bank, National Association	Current Report on Form 8-K (File No. 001-14187)	May 29, 2015
4.10	Officers’ Certificate and Authentication Order dated March 2, 2017 for the 5.250% Notes due 2045 (which includes the form of Note) issued pursuant to the Indenture dated as of April 8, 2014, between the Company and Wells Fargo Bank, National Association	Current Report on Form 8-K (File No. 001-14187)	March 3, 2017
4.11	Officers’ Certificate and Authentication Order dated March 2, 2017 for the 3.750% Notes due 2027 (which includes the form of Note) issued pursuant to the Indenture dated as of April 8, 2014, between the Company and Wells Fargo Bank, National Association	Current Report on Form 8-K (File No. 001-14187)	March 3, 2017
4.12	Officers’ Certificate and Authentication Order dated December 20, 2017 for the 4.250% Notes due 2048 (which includes the form of Note) issued pursuant to the Indenture dated as of April 8, 2014, between the Company and Wells Fargo Bank, National Association	Current Report on Form 8-K (File No. 001-14187)	December 20, 2017
10.1	Credit Agreement among RPM International Inc., the Borrowers party thereto, the Lenders party thereto and PNC Bank, National Association, as Administrative Agent, date December 5, 2014	Current Report on Form 8-K (File No. 001-14187)	December 11, 2014
10.2	Second Amended and Restated Receivables Sales Agreement dated May 9, 2014	Current Report on Form 8-K (File No. 001-14187)	May 15, 2014
10.2.1	Amendment No. 1 to Second Amended and Restated Receivables Sale Agreement, dated as of August 29, 2014	Quarterly Report on Form 10-Q (File No. 001-14187)	January 6, 2016
10.2.2	Amendment No. 2 to Second Amended and Restated Receivables Sale Agreement, dated as of November 3, 2015	Quarterly Report on Form 10-Q (File No. 001-14187)	January 6, 2016
10.2.3	Amendment No. 3 to Second Amended and Restated Receivables Sale Agreement, dated as of December 31, 2016	Quarterly Report on Form 10-Q (File No. 001-14187)	April 6, 2017
10.3	Amended and Restated Receivables Purchase Agreement, dated May 9, 2014	Current Report on Form 8-K (File No. 001-14187)	May 15, 2014
10.3.1	Amendment No. 1 to Amended and Restated Receivables Purchase Agreement, dated as of February 25, 2015	Quarterly Report on Form 10-Q (File No. 001-14187)	April 8, 2015
10.3.2	Amendment No. 2 to Amended and Restated Receivables Purchase Agreement, dated as of May 2, 2017	Current Report on Form 8-K (File No. 001-14187)	May 8, 2017
10.4	Amended and Restated Fee Letter, dated May 9, 2014	Current Report on Form 8-K (File No. 001-14187)	May 15, 2014
*10.5	Amended and Restated Employment Agreement, effective December 31, 2008, by and between the Company and Frank C. Sullivan, Chairman and Chief Executive Officer	Quarterly Report on Form 10-Q (File No. 001-14187)	April 9, 2009
*10.6	Form of Amended and Restated Employment Agreement, by and between the Company and Ronald A. Rice, President and Chief Operating Officer	Quarterly Report on Form 10-Q (File No. 001-14187)	April 9, 2009

25

Exhibit		Incorporated by reference herein
Number	Description	Form	Date
*10.7	Amended and Restated Employment Agreement, by and between the Company and Edward W. Moore, Vice President, General Counsel and Chief Compliance Officer	Quarterly Report on Form 10-Q (File No. 001-14187)	October 7, 2011
*10.8	Form of Indemnification Agreement entered into by and between the Company and each of its Directors and Executive Officers	Quarterly Report on Form 10-Q (File No. 001-14187)	January 13, 2003
*10.9	RPM International Inc. Benefit Restoration Plan	Annual Report on Form 10-K (File No. 001-14187)	August 29, 2001
*10.9.1	Amendment No. 1 to the RPM International Inc. Benefit Restoration Plan	Quarterly Report on Form 10-Q (File No. 001-14187)	April 14, 2003
*10.9.2	Amendment No. 2 to RPM International Inc. Benefit Restoration Plan	Quarterly Report on Form 10-Q (File No. 001-14187)	January 13, 2003
*10.10	RPM International Inc. Deferred Compensation Plan, as Amended and Restated Generally, effective January 1, 2005	Quarterly Report on Form 10-Q (File No. 001-14187)	April 9, 2009
*10.10.1	Master Trust Agreement for RPM International Inc. Deferred Compensation Plan	Annual Report on Form 10-K (File No. 001-14187)	August 29, 2002
10.11	Second Amendment and Restated Collection Account Agreement, dated July 29, 2010	Quarterly Report on Form 10-Q (File No. 001-14187)	October 6, 2010
*10.12	RPM, Inc. 1997 Restricted Stock Plan, and Form of Acceptance and Escrow Agreement to be used in connection therewith	Quarterly Report on Form 10-Q (File No. 001-14187)	January 13, 2003
*10.12.1	First Amendment to the RPM, Inc. 1997 Restricted Stock Plan, effective as of October 1, 1998	Annual Report on Form 10-K (File No. 001-14187)	August 29, 2002
*10.12.2	Second Amendment to the RPM, Inc. 1997 Restricted Stock Plan	Annual Report on Form 10-K (File No. 001-14187)	August 29, 2002
*10.12.3	Third Amendment to the RPM, Inc. 1997 Restricted Stock Plan	Quarterly Report on Form 10-Q (File No. 001-14187)	January 13, 2003
*10.12.4	Fourth Amendment to the RPM International Inc. 1997 Restricted Stock Plan	Quarterly Report on Form 10-Q (File No. 001-14187)	April 14, 2003
*10.12.5	Fifth Amendment to the RPM International Inc. 1997 Restricted Stock Plan	Annual Report on Form 10-K (File No. 001-14187)	August 16, 2004
*10.12.6	Sixth Amendment to the RPM International Inc. 1997 Restricted Stock Plan	Annual Report on Form 10-K (File No. 001-14187)	July 30, 2007
*10.12.7	Seventh Amendment to the RPM International Inc. 1997 Restricted Stock Plan, effective December 31, 2008	Quarterly Report on Form 10-Q (File No. 001-14187)	April 9, 2009
*10.13	RPM International Inc. 2003 Restricted Stock Plan for Directors	Quarterly Report on Form 10-Q (File No. 001-14187)	January 14, 2004
*10.13.1	Amendment No. 1 to the RPM International Inc. 2003 Restricted Stock Plan for Directors	Annual Report on Form 10-K (File No. 001-14187)	July 30, 2007
*10.13.2	Amendment No. 2 to the RPM International Inc. 2003 Restricted Stock Plan for Directors, effective December 31, 2008	Quarterly Report on Form 10-Q (File No. 001-14187)	April 9, 2009
*10.14	RPM International Inc. Amended and Restated 2004 Omnibus Equity and Incentive Plan, effective July 21, 2009	Definitive Proxy Statement (File No. 001-14187)	August 27, 2009

26

Exhibit		Incorporated by reference herein
Number	Description	Form	Date
*10.14.1	Form of Performance-Earned Restricted Stock (PERS) and Escrow Agreement (for grants prior to October 10, 2008)	Annual Report on Form 10-K (File No. 001-14187)	August 15, 2005
*10.14.2	Form of Stock Appreciation Rights Agreement (for grants prior to October 10, 2008)	Quarterly Report on Form 10-Q (File No. 001-14187)	October 6, 2005
*10.14.3	Form of Performance-Contingent Restricted Stock (PCRS) and Escrow Agreement	Quarterly Report on Form 10-Q (File No. 001-14187)	January 7, 2011
*10.14.4	Form of Performance-Earned Restricted Stock (PERS) and Escrow Agreement	Quarterly Report on Form 10-Q (File No. 001-14187)	January 8, 2009
*10.14.5	Form of Stock Appreciation Rights Agreement	Quarterly Report on Form 10-Q (File No. 001-14187)	January 8, 2009
*10.15	RPM International Inc. 2007 Restricted Stock Plan	Current Report on Form 8-K (File No. 001-14187)	October 12, 2006
*10.15.1	Amendment No. 1 to the RPM International Inc. 2007 Restricted Stock Plan, effective December 31, 2008	Quarterly Report on Form 10-Q (File No. 001-14187)	April 9, 2009
*10.16	RPM International Inc. Amended and Restated Incentive Compensation Plan	Quarterly Report on Form 10-Q (File No. 001-14187)	October 9, 2007
*10.17	Amended and Restated Employment Agreement, effective December 31, 2008, by and between the Company and Russell L. Gordon, Vice President and Chief Financial Officer	Annual Report on Form 10-K (File No. 001-14187)	July 24, 2013
10.18	Settlement Term Sheet, dated July 26, 2014, by and among the Company, Bondex, SPHC, Republic, the Asbestos Claimants’ Committee, counsel for each member of the Asbestos Claimant’s Committee in its individual capacity and on behalf of such member, and Eric Green, in his capacity as the Future Claimants’ Representative	Current Report on Form 8-K (File No. 001-14187)	July 31, 2014
*10.19	RPM International Inc. 2014 Omnibus Equity and Incentive Plan, effective October 10, 2014	Definitive Proxy Statement (File No. 001-14187)	August 26, 2014
10.20	Plan of Reorganization	Current Report on Form 8-K (File No. 001-14187)	December 23, 2014
*10.21	Amended and Restated Employment Agreement, effective December 31, 2008, by and between the Company and Janeen B. Kastner, Vice President – Corporate Benefits and Risk Management	Annual Report on Form 10-Q (File No. 001-14187)	October 7, 2015
10.22	Cooperation Agreement, dated as of June 27, 2018, by and among the Company, Elliott Associates, L.P., Elliott International, L.P., and Elliott International Capital Advisors Inc.	Current Report on Form 8-K (File No. 001-14187)	June 28, 2018
10.23	Separation Agreement and Release and Waiver of Claims, dated as of July 6, 2018, by and between the Company and Ronald A. Rice (x)
12	Computation of Ratio of Earnings to Fixed Charges (x)
13.1	Portions of RPM International Inc.’s 2018 Annual Report to Stockholders (x)
21.1	Subsidiaries of the Company (x)

27

Exhibit		Incorporated by reference herein
Number	Description	Form	Date
23.1	Consent of Independent Registered Public Accounting Firm (x)
31.1	Rule 13a-14(a) Certification of the Company’s Chief Executive Officer (x)
31.2	Rule 13a-14(a) Certification of the Company’s Chief Financial Officer (x)
32.1	Section 1350 Certification of the Company’s Chief Executive Officer (xx)
32.2	Section 1350 Certification of the Company Chief Financial Officer (xx)
101.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.

* Management contract or compensatory plan or arrangement.

(x) Filed herewith.

(xx) Furnished herewith.

28

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

RPM INTERNATIONAL INC.
By:	/s/  Frank C. Sullivan
	Frank C. Sullivan
	Chairman, President and Chief Executive Officer

Date: July 23, 2018

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant in the capacities indicated this 23rd day of July, 2018.

Signature	Title
/s/  Frank C. Sullivan	Chairman, President, Chief Executive Officer and a Director
Frank C. Sullivan	(Principal Executive Officer)
/s/  Russell L. Gordon	Vice President and Chief Financial Officer
Russell L. Gordon	(Principal Financial Officer)
/s/  Keith R. Smiley	Vice President-Finance and Controller
Keith R. Smiley	(Principal Accounting Officer)
/s/  John P. Abizaid	Director
John P. Abizaid
/s/  Kirkland B. Andrews	Director
Kirkland B. Andrews
/s/  John M. Ballbach	Director
John M. Ballbach
/s/  Bruce A. Carbonari	Director
Bruce A. Carbonari
/s/  David A. Daberko	Director
David A. Daberko
/s/  Jenniffer D. Deckard	Director
Jenniffer D. Deckard
/s/  Salvatore D. Fazzolari	Director
Salvatore D. Fazzolari
/s/  Thomas S. Gross	Director
Thomas S. Gross
/s/  Julie A. Lagacy	Director
Julie A. Lagacy
/s/  Robert A. Livingston	Director
Robert A. Livingston
/s/  Craig S. Morford	Director
Craig S. Morford
/s/  Frederick R. Nance	Director
Frederick R. Nance
/s/  William B. Summers, Jr.	Director
William B. Summers, Jr.

29

RPM International Inc. and Subsidiaries

Valuation And Qualifying Accounts and Reserves (Schedule II)

			Additions			Acquisitions
			Charged to			(Disposals)
	Balance at		Selling,			of Businesses							Balance at
	Beginning		General and			and			(Deductions)				End
(In thousands)	of Period		Administrative			Reclassifications			Additions				of Period
Year Ended May 31, 2018
Current:
Allowance for doubtful accounts	$	44,138	$	4,487		$	—		$	(2,281	)	(1)	$	46,344
Accrued product liability reserves	$	14,932	$	6,169		$	—		$	(8,201	)	(2)	$	12,900
Accrued loss reserves	$	1,102	$	413		$	—		$	(371	)	(2)	$	1,144
Noncurrent:
Accrued product liability	$	28,222	$	16,581		$	—		$	(14,901	)	(2)	$	29,902
Environmental reserves	$	1,747	$	5,350	(4)	$	—		$	(3,526	)		$	3,571
Year Ended May 31, 2017
Current:
Allowance for doubtful accounts	$	24,600	$	13,747		$	—		$	5,791		(1)	$	44,138
Accrued product liability reserves	$	25,100	$	5,262		$	—		$	(15,430	)	(2)	$	14,932
Accrued loss reserves	$	1,053	$	636		$	(322)	(3)	$	(265	)	(2)	$	1,102
Noncurrent:
Accrued product liability	$	29,045	$	15,005		$	281		$	(16,109	)	(2)	$	28,222
Environmental reserves	$	1,676	$	404		$	328	(3)	$	(661	)		$	1,747
Year Ended May 31, 2016
Current:
Allowance for doubtful accounts	$	24,526	$	8,692		$	—		$	(8,618	)	(1)	$	24,600
Accrued product liability reserves	$	11,916	$	13,848		$	—		$	(664	)	(2)	$	25,100
Accrued loss reserves	$	1,383	$	230		$	—		$	(560	)	(2)	$	1,053
Noncurrent:
Accrued product liability	$	29,768	$	9,637		$			$	(10,360	)	(2)	$	29,045
Environmental reserves	$	3,498	$	730		$	—		$	(2,552	)		$	1,676

(1) Uncollectible accounts written off, net of recoveries

(2) Primarily claims paid during the year, net of insurance contributions

(3) Primarily transfers between current and noncurrent

(4) Approximately $1.7 million of the additions is reflected in the line item entitled, “Restructuring Expense,” in our Consolidated Statements of Income.

S-1