| Year | Detail |
| 1860 - 1880 |
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| 1866 |
The Sherwin-Williams Co. was established by Henry A. Sherwin and Edward P. Williams in Cleveland, Ohio. |
| 1873 |
The Sherwin-Williams Co. introduced its first ready-mixed paint, and a high-quality oil-based paint was introduced to the market. |
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| 1881 - 1900 |
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| 1888 |
Sherwin-Williams Co. bought the Calumet Paint Co. of Chicago. This expansion was fueled in part by Walter H. Cottingham. |
| 1890 |
Sherwin-Williams Co. introduced a line of marine finishes. |
| 1892 |
Sherwin-Williams Co. merged with Walter H. Cottingham Co. to mark its first presence in Canada. |
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| 1901 - 1920 |
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| 1903 |
Sherwin-Williams Co. established an office in London which accelerated its access to New Zealand, Canada, Australia, South Africa, China, and India. |
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| 1921 - 1940 |
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| 1925 |
Sherwin-Williams Co. was first traded on the American Stock Exchange. |
| 1928 |
Sherwin-Williams Co. introduces its first synthetic aviation coatings. |
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| 1941-1960 |
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| 1941 |
Sherwin-Williams Co. introduced the Roller-Koater applicator. |
| 1959 |
Sherwin-Williams Co. introduced the Kem Colorimeter Mixing Machine to help customers customize paint colors. |
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| 1961 - 1980 |
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| 1961 |
Sherwin-Williams Co. develops paint can shakers to help mix five-gallon containers and allow customers to buy paint in larger quantities. |
| 1963 |
Sherwin-Williams Co. introduced Acrylyd, an automotive finish resistant to chips and scratches. |
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| 1981 - 2000 |
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| 1992 |
Sherwin-Williams Co. opened its 2,000th store. This retail outlet was opened, and the consumer brands division was formed. |
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| 2001 - 2020 |
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| 2006 |
Sherwin-Williams Co. opened its 3,000th store in Syosset, New York. |
| 2011 |
Sherwin-Williams Co. introduced Harmony Interior Latex paint, which helps promote better indoor air quality. |
| 2014 |
Sherwin-Williams Co. opened its 4,000th store its newest location in Sewickley, Pennsylvania. |
| 2015 |
Sherwin-Williams Co. launched Paint Shield, the first EPA-registered paint that helps kill bacteria. |
| 2017 |
Sherwin-Williams Co. acquired Valspar Corp. Under this acquisition, Valspar Corp.'s shareholders will receive $113 per share in cash. |
| 2018 |
Sherwin-Williams Co. introduced the ColorSnap Visualizer Application, which helps customers paint colors on their walls. |