Exhibit A

Joint Filing Agreement

This JOINT FILING AGREEMENT, dated as of September 2, 2021, is entered into by and among White Pine, Inc. and Laird Norton Company LLC. Each of the above are together referred to herein as the “Parties” and each individually as a “Party.” Pursuant to Rule 13d-l(k)(l)(iii) promulgated under the Securities Exchange Act of 1934, as amended, the Parties hereby acknowledge and agree that the Statement on Schedule 13G is filed on behalf of each such Party and that all subsequent amendments to the Statement on Schedule 13G shall be filed on behalf of each of the Parties without the necessity of executing or filing additional joint filing agreements. The Parties hereby acknowledge that each Party shall be responsible for timely filing of such amendments, and for the completeness and accuracy of the information concerning such Party contained therein, but shall not be responsible for the completeness and accuracy of the information concerning any other Party, except to the extent that such Party knows or has reason to believe that such information is inaccurate.

IN WITNESS WHEREOF, the Parties hereto have executed this Joint Filing Agreement as of the day and year first above written.

WHITE PINE, INC.
By:	/s/ Joseph Phelps
	Name:  Joseph Phelps
	Title:    Vice President, Legal & Secretary

LAIRD NORTON COMPANY LLC
By:	/s/ Joseph Phelps
	Name:  Joseph Phelps
	Title:  Vice President, Legal & Secretary