| Type | Sym | Class | Transaction | Value $ | Shares | Change % | Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATEN | Common Stock, par value $0.00001 | Award | $0 | +10.3 K | +20.15% | $0.00 | 61.5 K | Jun 24, 2022 | Direct | F1, F2, F3 |
| holding | ATEN | Common Stock, par value $0.00001 | 75.5 K | Jun 24, 2022 | By Viex Opportunities Fund, LP - Series One | F2, F3, F4 |
| Id | Content |
|---|---|
| F1 | Each share is represented by a Restricted Stock Unit ("RSU"). The RSUs will vest on the earlier of the first anniversary of the grant date or the date of the Issuer's next Annual Meeting, subject to the Reporting Person's continued service as of such date. |
| F2 | This Form 4 is filed jointly by VIEX Opportunities Fund, LP - Series One ("Series One"), a series of VIEX Opportunities Fund, LP, VIEX GP, LLC ("VIEX GP"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons"). |
| F3 | 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 any other purpose. |
| F4 | Securities of A10 Networks, Inc. (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. |