AS-1000 LT WHITE/GRAY AS-1000 DK GRAY PP FR 8-6 LMS-1000

27091-01 EXPE9008 WHITE 1000 27091-02 EXPE9008 WHITE 1000 PP FR 8-6 LMS-1000

10954-01 EXPE2787 WHITE 1000 (Foam Base) 10955-01 EXPE2788 WHITE 1000 (Foam Base) PP FR 8-6 LMS-1000

Commission file number 1-16091 PolyOne Corporation (Exact name of registrant as specified in its charter) Ohio 34-1730488 (State or other jurisdiction of incorporation or organization) (IRS Employer Identification No.) 33587 Walker Road, 44012 Avon Lake, Ohio (Zip Code) (Address of principal executive offices) Registrant’s telephone number, including area code (440) 930-1000 Securities registered pursuant to Section 12(b) of the Act: Title of each class Name of each exchange on which registered Common Shares, par value $.01 per share 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. For more information about our international operations, see Note 14, Segment Information, to the accompanying consolidated financial 7POLYONE CORPORATION 8 Where You Can Find Additional Information Our principal executive offices are located at 33587 Walker Road, Avon Lake, Ohio 44012, and our telephone number is (440) 930-1000. SHAREHOLDER INQUIRIES If you have any questions concerning your account as a shareholder, name or address changes, inquiries regarding stock certificates, or if you need tax information regarding your account, please contact our transfer agent: Wells Fargo Shareowner Services 1110 Centre Pointe Curve, Suite 101 Mendota Heights, MN 55120-4100 Phone: 1-855-598-2815 or 1-651-450-4064 www.shareowneronline.com Additional information about PolyOne, including current and historic copies of Annual Reports on Form 10-K and other reports filed with the Securities and Exchange Commission, is available online at www.polyone.com or free of charge from: Investor Affairs Administrator 33587 Walker Road Avon Lake, Ohio 44012 Phone: 440-930-1000 ANNUAL MEETING The annual meeting of shareholders of PolyOne will be held May 11, 2017 at 9:00 a.m. at PolyOne’s Corporate headquarters, 33587 Walker Road, Avon Lake, Ohio.

Commission file number 1-16091 PolyOne Corporation (Exact name of registrant as specified in its charter) Ohio   34-1730488 (State or other jurisdiction of incorporation or organization)   (IRS Employer Identification No.) 33587 Walker Road,   44012 Avon Lake, Ohio   (Zip Code) (Address of principal executive offices)   Registrant’s telephone number, including area code            (440) 930-1000 Securities registered pursuant to Section 12(b) of the Act: Title of each class   Name of each exchange on which registered Common Shares, par value $.01 per share   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.     For more information about our international operations, see Note 14, Segment Information, to the accompanying consolidated financial Where You Can Find Additional Information Our principal executive offices are located at 33587 Walker Road, Avon Lake, Ohio 44012, and our telephone number is (440) 930-1000. SHAREHOLDER INQUIRIES If you have any questions concerning your account as a shareholder, name or address changes, inquiries regarding stock certificates, or if you need tax information regarding your account, please contact our transfer agent: Equiniti Trust Company 1110 Centre Pointe Curve, Suite 101 Mendota Heights, MN 55120-4100 Phone: 1-855-598-2815 or 1-651-450-4064 www.shareowneronline.com Additional information about PolyOne, including current and historic copies of Annual Reports on Form 10-K and other reports filed with the Securities and Exchange Commission, is available online at www.polyone.com or free of charge from: Investor Affairs Administrator 33587 Walker Road Avon Lake, Ohio 44012 Phone: 440-930-1000 ANNUAL MEETING The annual meeting of shareholders of PolyOne will be held May 17, 2018 at 9:00 a.m. at PolyOne’s Corporate headquarters, 33587 Walker Road, Avon Lake, Ohio.

36135-01 EXPE2600E WHITE 1000 36135-02 EXPE2600E WHITE 1000 PP FR 8-6 LMS-1000

XOR AS-1000 AS UV NATURAL PC-1000 NH FRV0 BLACK PP FR 8-6 LMS-1000

PC-1000 - 4623 WHT HF SY-1000 AS NAT PP FR 8-6 LMS-1000

GEON C8500 WHITE 1000 GEON L6181 WHITE 1000 PP FR 8-6 LMS-1000

DP 9239-2-1000 DP 9239-1-1000 PP FR 8-6 LMS-1000