Peter Y. Chung - 20 May 2024 Form 4 Insider Report for A10 Networks, Inc. (ATEN)

Footnote F1

Represents 2,402,901 shares sold by Summit Partners Growth Equity Fund VIII-A, L.P., 877,861 shares sold by Summit Partners Growth Equity Fund VIII-B, L.P., 14,049 shares sold by Summit Investors I, LLC, and 1,236 shares sold by Summit Investors I (UK), L.P.

Footnote F2

The reported securities are held as follows: 314,791 shares in the name of Summit Partners Growth Equity Fund VIII-A, L.P.; 115,005 shares in the name of Summit Partners Growth Equity Fund VIII-B, L.P.; 1,840 shares in the name of Summit Investors I, LLC; 163 shares in the name of Summit Investors I (UK), L.P.; 187,367 shares and restricted stock units in the name of Mr. Chung, which are held for the benefit of Summit Partners, L.P.

Footnote F3

Mr. Chung holds any Common Stock and restricted stock units for the benefit of Summit Partners, L.P., which he as empowered to determine when the underlying shares will be sold and which is entitled to the proceeds of any such sales.

Footnote F4

(Continued from footnote 3) Summit Partners, L.P. is the managing member of Summit Partners GE VIII, LLC, which is the general partner of Summit Partners GE VIII, L.P., which is the general partner of each of Summit Partners Growth Equity Fund VIII-A, L.P. and Summit Partners Growth Equity Fund VIII-B, L.P. Summit Master Company, LLC is the managing member of Summit Investors Management, LLC, which is the manager of Summit Investors I, LLC and the general partner of Summit Investors I (UK), L.P. Summit Partners GE VIII, LLC, as the general partner of Summit Partners GE VIII, L.P., and Summit Master Company, LLC, as the managing member of Summit Investors Management, LLC, has each delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its Investment Committee responsible for voting and investment decisions with respect to the Issuer.

Footnote F5

(Continued from footnote 4) Summit Partners, L.P., through a two-person Investment Committee, responsible for voting and investment decisions with respect to the Issuer, currently composed of Scott C. Collins and Peter Y. Chung, has voting and dispositive authority over the shares and restricted stock units reported herein and therefore may be deemed to beneficially own such shares and restricted stock units. Summit Partners, L.P., Mr. Collins and Mr. Chung each disclaim beneficial ownership of the shares of Common Stock and the restricted stock units, except to the extent of their respective pecuniary interest therein.