Markforged Holding (MKFG) SC 13G Markforged Holding / Summit Partners Growth Equity Fund IX-A ownership change

EXHIBIT A

JOINT FILING AGREEMENT

This will confirm the agreement by and among the undersigned that the Schedule 13G filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the Common Stock, $0.0001 par value per share (“Common Stock”), of Markforged Holding Corporation (this “Agreement”), is being filed, and all amendments thereto will be filed, on behalf of each of the persons and entities named below that is named as a reporting person in such filing in accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

Dated:    February 9, 2022

SUMMIT PARTNERS GROWTH EQUITY FUND IX-A, L.P.
By:	Summit Partners GE IX, L.P.
Its:	General Partner
By:	Summit Partners GE IX, LLC
Its:	General Partner
*
Authorized Signatory

SUMMIT PARTNERS GROWTH EQUITY FUND IX-B, L.P.
By:	Summit Partners GE IX, L.P.
Its:	General Partner
By:	Summit Partners GE IX, LLC
Its:	General Partner
*
Authorized Signatory

SUMMIT INVESTORS GE IX/VC IV, LLC
By:	Summit Investors Management, LLC
Its:	Manager
By:	Summit Master Company, LLC
Its:	Managing Member
*
Authorized Signatory

SUMMIT INVESTORS GE IX/VC IV (UK), L.P.

By: Summit Investors Management, LLC

Its: General Partner

By: Summit Master Company, LLC

Its: Managing Member

*

Authorized Signatory

SUMMIT PARTNERS, L.P.

By: Summit Master Company, LLC

Its: General Partner

*

Authorized Signatory

* By:	/s/ Adam H. Hennessey
	Adam H. Hennessey
	Power of Attorney**

** Pursuant to Powers of Attorney attached hereto as Exhibit B.