ROBERT D. COCHRAN - 09 Jun 2022 Form 4 Insider Report for A10 Networks, Inc. (ATEN)

Role: EVP Legal & Corp Collaboration
Signature: /s/ Robert D. Cochran
Issuer symbol: ATEN
Transactions as of: 09 Jun 2022
Net transactions value: -$537,038
Form type: 4
Filing time: 10 Jun 2022, 20:12:48 UTC
Previous filing: 02 Jun 2022
Next filing: 29 Jun 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ATEN	Common Stock	Options Exercise	$390,298	+45,850	+14%	$8.51	383,675	09 Jun 2022	Direct
transaction	ATEN	Common Stock	Tax liability	$537,038	-34,514	-9%	$15.56	349,161	09 Jun 2022	Direct	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ATEN	Employee Stock Option (right to buy)	Options Exercise	$390,298	-45,850	-100%	$8.51	0	09 Jun 2022	Common Stock	45,850	$8.51	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the number of shares sold to cover the exercise price and tax withholding obligations in connection with the exercise of 45,850 stock options.
F2	This is the weighted average price of the shares sold, which ranged from $15.50 to $15.65 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.
F3	The non-statutory stock option award vested as to 1/48th per month commencing on the one-month anniversary of October 24, 2013.