GreenLight Biosciences (GRNA) SC 13D GreenLight Biosciences Holdings, PBC / RPB VENTURES ownership change

Exhibit 99.3

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that they are jointly filing this statement on Schedule 13D. Each of them is responsible for the timely filing of such statement and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

This agreement may be executed in counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned hereby execute this Joint Filing Agreement as of the 20th day of July, 2023.

RPB VENTURES, LLC
By:	/s/ Ruth Beneby
	Name:	Ruth Beneby
	Title:	Director

LTS INVESTMENTS FUND LP
By:	/s/ Ruth Beneby
	Name:	Ruth Beneby
	Title:	Director

LTS INVESTMENTS GP LTD.
By:	/s/ Ruth Beneby
	Name:	Ruth Beneby
	Title:	Director