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Table of Contents ( Mark One ) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , DC 20549 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the year ended December 31 , 2020 FORM 10 - K □ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Title of each class Common Stock , par value $ 0.01 per share Delaware ( State or other jurisdiction of incorporation or organization ) Commission File Number 001-36362 BioLife Solutions , Inc. ( Exact name of registrant as specified in its charter ) 94-3076866 ( IRS Employer Identification No. ) 3303 Monte Villa Parkway , Suite 310 , Bothell , Washington , 98021 ( Address of registrant's principal executive offices , Zip Code ) ( 425 ) 402-1400 ( Telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading symbol ( $ ) BLFS Name of exchange on which registered NASDAQ Capital Market Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark whether the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No Indicate by check mark whether 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 every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S T ( S232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the Registrant was required to submit such said files ) . Yes No 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 . Large accelerated filer Accelerated filer Non - accelerated filer 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 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 . Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . Yes No As of the registrant's most recently completed second fiscal quarter , the aggregate market value of common equity ( based on closing price on June 30 , 2020 of $ 16.35 per share ) held by non - affiliates was approximately $ 263 million . As of March 19 , 2021 , 33,401,359 shares of the registrant's common stock were outstanding .