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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , DC 20549 ( Mark One ) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 FORM 10 - K 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 number 001-32964 THE FIRST OF LONG ISLAND CORPORATION ( Exact Name Of Registrant As Specified In Its Charter ) New York ( State or Other Jurisdiction of Incorporation or Organization ) 10 Glen Head Road , Glen Head , NY ( Address of Principal Executive Offices ) per share ( Registrant's Securities registered pursuant to Section 12 ( b ) of the Act : Title of Each Class Common stock , $ 0.10 par value Securities registered pursuant to Section 12 ( g ) of the Act : ( 516 ) 671-4900 telephone number , including area code ) Trading Symbol FLIC None ( Title of class ) 11-2672906 ( I.R.S. Employer Identification No. ) 11545 ( Zip Code ) Name of Each Exchange on Which Registered Nasdaq Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No ý 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 ý 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 requirement for the past 90 days . Yes ý 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 y No