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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30 , 2021 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 : 000-39603 PETRA ACQUISITION , INC . ( Exact name of registrant as specified in its charter ) Delaware ( State or other Jurisdiction of Incorporation or Organization ) 5 West 21st Street , New York , New York ( Address of Principal Executive Offices ) ( 971 ) 622-5800 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : 84-3898466 ( I.R.S. Employer Identification No. ) 10010 ( Zip Code ) Title of each class Units , each consisting of one share of common stock and one redeemable share Common stock , par value $ 0.001 per share Redeemable warrants , exercisable for shares of common stock an exercise price of $ 11.50 per share PAICU Name of exchange on which registered Trading symbol ( s ) The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC PAIC PAICW 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 ☐ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a small 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 Non - accelerated filer ☐ ☑ > > > 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 is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes □ No □ As of October 29 , 2021 , there were 9,097,689 shares of the registrant's common stock outstanding .