Form 4 Filing for Henry Mary C

On October 5, 2026, Henry Mary C acquired 7,981 shares of A10 Networks, Inc. common stock through the vesting of Restricted Stock Units (RSUs). The RSUs vest in three equal tranches on the first three anniversaries of the vesting commencement date, provided the reporting person continues to be employed through each vesting date. This transaction is reported as a direct acquisition with a post-transaction ownership of 7,981 shares. The acquisition is part of a director