A10 Networks, Inc. — Director's Dealing 2019

Nov 18, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: A10 Networks, Inc. (ATEN)
CIK: 0001580808
Period of Report: 2019-11-14

Reporting Person: Singer Eric (Director)
Reporting Person: VIEX Opportunities Fund, LP Series One (Director)
Reporting Person: VIEX Opportunities Fund, LP - Series Two (Director)
Reporting Person: VIEX GP, LLC (Director)
Reporting Person: VIEX Special Opportunities Fund II, LP (Director)
Reporting Person: VIEX Special Opportunities GP II, LLC (Director)
Reporting Person: VIEX Special Opportunities Fund III, LP (Director)
Reporting Person: VIEX Special Opportunities GP III, LLC (Director)
Reporting Person: VIEX Capital Advisors, LLC (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-11-14	Common Stock, par value $0.00001	X	67200	$7.50	Acquired	4966322	Indirect
2019-11-15	Common Stock, par value $0.00001	X	132800	$7.50	Acquired	5099122	Indirect
2019-11-15	Common Stock, par value $0.00001	X	5900	$5.00	Acquired	5105022	Indirect
2019-11-15	Common Stock, par value $0.00001	X	150000	$2.50	Acquired	5255022	Indirect
2019-11-15	Common Stock, par value $0.0000	X	5800	$5.00	Acquired	276916	Indirect
2019-11-15	Common Stock, par value $0.00001	X	210500	$2.50	Acquired	487416	Indirect
2019-11-15	Common Stock, par value $0.00001	X	150900	$2.50	Acquired	482877	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2019-11-14	Put Option (Obligation to Buy)	$7.50	X	672	Disposed	2019-11-15	Common Stock, par value $0.00001 (67200)	Indirect
2019-11-15	Put Option (Obligation to Buy)	$7.50	X	1328	Disposed	2019-11-15	Common Stock, par value $0.00001 (132800)	Indirect
2019-11-15	Call Option (Right to Buy)	$5.00	X	59	Disposed	2019-11-15	Common Stock, par value $0.00001 (5900)	Indirect
2019-11-15	Call Option (Right to Buy)	$2.50	X	1500	Disposed	2019-11-15	Common Stock, par value $0.00001 (150000)	Indirect
2019-11-15	Call Option (Right to Buy)	$2.50	X	2105	Disposed	2019-11-15	Common Stock, par value $0.00001 (210500)	Indirect
2019-11-15	Call Option (Right to Buy)	$5.00	X	58	Disposed	2019-11-15	Common Stock, par value $0.00001 (5800)	Indirect
2019-11-15	Call Option (Right to Buy)	$2.50	X	1509	Disposed	2019-11-15	Common Stock, par value $0.00001 (150900)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, par value $0.00001	1658360	Indirect
Common Stock, par value $0.00001	30120	Direct

Footnotes

F1: Shares of Common Stock of A10 Networks, Inc. (the "Issuer") beneficially owned directly by VSO II or options sold by VSO II. The transaction reported herein represent the exercise of 672 put option contracts on November 14, 2019 sold by VSO II, each contract representing 100 shares of Issuer Common Stock, by the counterparty and the acquisition of the shares underlying such put options by VSO II. VSO GP II, as the general partner of VSO II, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO II. VIEX Capital, as the investment manager of VSO II, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO II. Mr. Singer, as the managing member of each of VSO GP II and VIEX Capital, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO II.

F2: This Form 4 is filed jointly by VIEX Opportunities Fund, LP - Series One ("Series One"), a series of VIEX Opportunities Fund, LP, VIEX Opportunities Fund, LP - Series Two ("Series Two"), a series of VIEX Opportunities Fund, LP, VIEX Special Opportunities Fund II, LP ("VSO II"), Viex Special Opportunities Fund III, LP ("VSO III"), VIEX GP, LLC ("VIEX GP"), VIEX Special Opportunities GP II, LLC ("VSO GP II"), Viex Special Opportunities GP III, LLC ("VSO GP III"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons").

F3: Securities of the Issuer beneficially owned directly by VSO II. VSO GP II, as the general partner of VSO II, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by VSO II. VIEX Capital, as the investment manager of VSO II, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by VSO II. Mr. Singer, as the managing member of each of VSO GP II and VIEX Capital, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by VSO II.

F4: Each Reporting Person disclaims beneficial ownership of the securities of the Issuer reported herein except to the extent of his or its pecuniary interest therein, and this report shall not be deemed to be an admission that any Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

F5: Shares of Common Stock of the Issuer beneficially owned directly by VSO II or options sold by VSO II. The transaction reported herein represent the exercise of 1,328 put option contracts on November 15, 2019 sold by VSO II, each contract representing 100 shares of Issuer Common Stock, by the counterparty and the acquisition of the shares underlying such put options by VSO II. VSO GP II, as the general partner of VSO II, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO II. VIEX Capital, as the investment manager of VSO II, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO II. Mr. Singer, as the managing member of each of VSO GP II and VIEX Capital, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO II.

F6: Shares of Common Stock of the Issuer beneficially owned directly by VSO II or options sold by VSO II. The transactions reported herein represent the exercises on November 15, 2019 of (i) 1,500 call option contracts sold by VSO II, and (ii) 59 call option contracts sold by VSO II, each contract representing 100 shares of Issuer Common Stock, by the counterparty and the acquisition of the shares underlying such call options by VSO II. VSO GP II, as the general partner of VSO II, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO II. VIEX Capital, as the investment manager of VSO II, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO II. Mr. Singer, as the managing member of each of VSO GP II and VIEX Capital, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO II.

F7: Shares of Common Stock of the Issuer beneficially owned directly by VSO III or options sold by VSO III. The transactions reported herein represent the exercises on November 15, 2019 of (i) 2,105 call option contracts sold by VSO III, and (ii) 58 call option contracts sold by VSO III, each contract representing 100 shares of Issuer Common Stock, by the counterparty and the acquisition of the shares underlying such call options by VSO III. VSO GP III, as the general partner of VSO III, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO III. VIEX Capital, as the investment manager of VSO III, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO III. Mr. Singer, as the managing member of each of VSO GP III and VIEX Capital, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by VSO III.

F8: Securities of the Issuer beneficially owned directly by VSO III. VSO GP III, as the general partner of VSO III, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by VSO III. VIEX Capital, as the investment manager of VSO III, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by VSO III. Mr. Singer, as the managing member of each of VSO GP III and VIEX Capital, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by VSO III.

F9: Shares of Common Stock of the Issuer beneficially owned directly by Series Two or options sold by Series Two. The transaction reported herein represents the exercise on November 15, 2019 of 1,509 call option contracts sold by Series Two, each contract representing 100 shares of Issuer Common Stock, by the counterparty and the acquisition of the shares underlying such call options by Series Two. VIEX GP, as the general partner of Series Two, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by Series Two. VIEX Capital, as the investment manager of Series Two, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by Series Two. Mr. Singer, as the managing member of each of VIEX GP and VIEX Capital, may be deemed the beneficial owner of the shares of Common Stock of the Issuer beneficially owned by Series Two.

F10: Securities of the Issuer beneficially owned directly by Series Two. VIEX GP, as the general partner of Series Two, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series Two. VIEX Capital, as the investment manager of Series Two, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series Two. Mr. Singer, as the managing member of each of VIEX GP and VIEX Capital, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series Two.

F11: Securities of the Issuer beneficially owned directly by Series One. VIEX GP, as the general partner of Series One, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series One. VIEX Capital, as the investment manager of Series One, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series One. Mr. Singer, as the managing member of each of VIEX GP and VIEX Capital, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series One.

F12: These options were exercisable when exercised.