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FORM 10 - K □ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31 , 2020 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from Commission File Number : 1-11718 Maryland ( State or other jurisdiction of incorporation ) Two North Riverside Plaza , Suite 800 ( Address of Principal Executive Offices ) Title of each class Common Stock , $ 0.01 Par Value to X EQUITY LIFESTYLE PROPERTIES , INC . ( Exact name of registrant as specified in its charter ) ☐ or Chicago , Illinois 36-3857664 ( IRS Employer Identification Number ) 60606 ( Zip Code ) ( 312 ) 279-1400 Registrant's telephone number , including area code Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) ELS Securities registered pursuant to Section 12 ( g ) of the Act : None Yes > No □ Yes □ No 风 Indicate by check mark if the Registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . 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 every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( §232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes > No D Indicate by check mark whether the Registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or emerging growth company . See definitions of " large accelerated filer , " " accelerated filer " , " smaller reporting company " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer Accelerated filer Smaller reporting company Non - accelerated filer Emerging Growth Company □ Name of each exchange on which registered New York Stock Exchange 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 has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . < Yes ☐ No 区 Indicate by check mark whether the Registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . The aggregate market value of voting stock held by non - affiliates was approximately $ 10,599.0 million as of June 30 , 2020 based upon the closing price of $ 62.48 on such date using beneficial ownership of stock rules adopted pursuant to Section 13 of the Securities Exchange Act of 1934 to exclude voting stock owned by Directors and Officers , some of whom may not be held to be affiliates upon judicial determination . As of February 18 , 2021 , 182,299,709 shares of the Registrant's common stock were outstanding . DOCUMENTS INCORPORATED BY REFERENCE : Part III incorporates by reference portions of the Registrant's Proxy Statement relating to the Annual Meeting of Stockholders to be held on April 27 , 2021 .