AGREEMENT

Exhibit 1

AGREEMENT

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of shares of A10 Networks, Inc.

This agreement may be executed in any number of counterparts, each of which shall be deemed an original.

EXECUTED this 4th day of February 2015.

SUMMIT PARTNERS, L.P. By: Summit Master Company, LLC, its general partner						SUMMIT PARTNERS GE VIII, LLC By: Summit Partners, L.P., its managing member By: Summit Master Company, LLC, its general partner
By:		*				By:		*
		Member						Member

SUMMIT PARTNERS GE VIII, L.P. By: Summit Partners GE VIII, LLC, its general partner By: Summit Partners, L.P., its managing member By: Summit Master Company, LLC, its general partner						SUMMIT PARTNERS GROWTH EQUITY FUND VIII-A, L.P. By: Summit Partners GE VIII, L.P., its general partner By: Summit Partners GE VIII, LLC, its general partner By: Summit Partners, L.P., its managing member By: Summit Master Company, LLC, its general partner
By:		*				By:		*
		Member						Member

SUMMIT PARTNERS GROWTH EQUITY FUND VIII-B, L.P. By: Summit Partners PE VII, L.P., its general partner By: Summit Partners PE VII, LLC, its general partner By: Summit Partners, L.P., its managing member By: Summit Master Company, LLC, its general partner						SUMMIT MASTER COMPANY, LLC
By:		*				By:		*
		Member						Member

SUMMIT INVESTORS MANAGEMENT, LLC By: Summit Partners, L.P., its managing member By: Summit Master Company, LLC, its general partner						SUMMIT INVESTORS I, LLC By: Summit Investors Management, LLC, its manager By: Summit Master Company, LLC, its general partner
By:		*				By:		*
		Member						Member

SUMMIT INVESTORS I (UK), L.P. By: Summit Investors Management, LLC, its manager By: Summit Master Company, LLC, its general partner
By:		*				By:		*
		Member						Xxxxxx X. Xxxxxxx
By:		*				*By:		/s/ Xxxxx X. Xxxxxxxx
		Xxxxx X. Xxxxx						Xxxxx X. Xxxxxxxx Power of Attorney**

** Pursuant to Powers of Attorney attached hereto as Exhibit 2.