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VIEX Special Opportunities GP III, LLC

Disclosed activity across 2 companies

Tapewire entity
146803
SEC CIK
0001676049

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
A10 Networks, Inc.ATEN · Entity 457410% ownerSeptember 01, 2020September 03, 2020

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $0.00001SEC Table I · non-derivativeIndirectBy Viex Opportunities Fund, LP - Series One1,465,781 Reported balance After 2020-09-01 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2020-09-01 · Other · Disposed 68,817 · Balance 1,465,781

F4: Represents a distribution of shares of the Issuer from Series One to a limited partner of Series One.

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: 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: 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.

Common Stock, par value $0.00001SEC Table I · non-derivativeDirect56,190 Reported balance Holding disclosure · report date 2020-09-01 · row 1 Holding and transaction disclosures are not merged.
1 source row

Row 1 · Balance 56,190

F1: Certain shares are represented by Restricted Stock Units granted to Eric Singer in connection with his service on A10 Networks, Inc.'s (the "Issuer" board of directors.

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: 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.

Common Stock, par value $0.00001SEC Table I · non-derivativeIndirectBy Viex Opportunities Fund, LP - Series Two482,877 Reported balance Holding disclosure · report date 2020-09-01 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 482,877

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: 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.

F6: 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.

Common Stock, par value $0.00001SEC Table I · non-derivativeIndirectBy Viex Special Opportunities Fund II, LP5,255,022 Reported balance Holding disclosure · report date 2020-09-01 · row 4 Holding and transaction disclosures are not merged.
1 source row

Row 4 · Balance 5,255,022

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: 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.

F7: 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.

Common Stock, par value $0.00001SEC Table I · non-derivativeIndirectBy Viex Special Opportunities Fund III, LP487,416 Reported balance Holding disclosure · report date 2020-09-01 · row 5 Holding and transaction disclosures are not merged.
1 source row

Row 5 · Balance 487,416

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: 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.

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.

Filing footnotes · ownership attribution and instrument terms

F1: Certain shares are represented by Restricted Stock Units granted to Eric Singer in connection with his service on A10 Networks, Inc.'s (the "Issuer" board of directors.

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: 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.

F4: Represents a distribution of shares of the Issuer from Series One to a limited partner of Series One.

F5: 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.

F6: 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.

F7: 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.

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.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Section 16 reporting ended · disclosed 2019-12-13. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $0.001SEC Table I · non-derivativeIndirectBy Viex Opportunities Fund, LP - Series One835,679 Reported balance After 2019-12-10 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2019-12-10 · Sale · Disposed 90,304 · Balance 835,679

F1: 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 III, LP ("VSO III"), VIEX GP, LLC ("VIEX GP"), Viex Special Opportunities GP III, LLC ("VSO GP III"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons").

F2: As of the close of business on December 10, 2019, the Reporting Persons ceased to be holders of an aggregate of 10% or more of Quantum Corporation's (the "Issuer") outstanding shares of Common Stock. 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.

F4: 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.

Common Stock, par value $0.001SEC Table I · non-derivativeIndirectBy Viex Opportunities Fund, LP - Series Two159,421 Reported balance After 2019-12-10 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2019-12-10 · Sale · Disposed 17,227 · Balance 159,421

F1: 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 III, LP ("VSO III"), VIEX GP, LLC ("VIEX GP"), Viex Special Opportunities GP III, LLC ("VSO GP III"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons").

F2: As of the close of business on December 10, 2019, the Reporting Persons ceased to be holders of an aggregate of 10% or more of Quantum Corporation's (the "Issuer") outstanding shares of Common Stock. 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: 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.

Common Stock, par value $0.001SEC Table I · non-derivativeIndirectBy Viex Special Opportunities Fund III, LP2,336,364 Reported balance After 2019-12-10 transaction · row 4 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 4 · 2019-12-10 · Sale · Disposed 252,469 · Balance 2,336,364

F1: 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 III, LP ("VSO III"), VIEX GP, LLC ("VIEX GP"), Viex Special Opportunities GP III, LLC ("VSO GP III"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons").

F2: As of the close of business on December 10, 2019, the Reporting Persons ceased to be holders of an aggregate of 10% or more of Quantum Corporation's (the "Issuer") outstanding shares of Common Stock. 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.

F6: 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.

Common Stock, par value $0.001SEC Table I · non-derivativeDirect66,681 Reported balance Holding disclosure · report date 2019-12-10 · row 1 Holding and transaction disclosures are not merged.
1 source row

Row 1 · Balance 66,681

F1: 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 III, LP ("VSO III"), VIEX GP, LLC ("VIEX GP"), Viex Special Opportunities GP III, LLC ("VSO GP III"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons").

F2: As of the close of business on December 10, 2019, the Reporting Persons ceased to be holders of an aggregate of 10% or more of Quantum Corporation's (the "Issuer") outstanding shares of Common Stock. 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.

F3: Each share is represented by a restricted stock unit, all of which are fully vested and each of which represents a contingent right to receive one share of common stock of the Issuer.

Filing footnotes · ownership attribution and instrument terms

F1: 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 III, LP ("VSO III"), VIEX GP, LLC ("VIEX GP"), Viex Special Opportunities GP III, LLC ("VSO GP III"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons").

F2: As of the close of business on December 10, 2019, the Reporting Persons ceased to be holders of an aggregate of 10% or more of Quantum Corporation's (the "Issuer") outstanding shares of Common Stock. 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.

F3: Each share is represented by a restricted stock unit, all of which are fully vested and each of which represents a contingent right to receive one share of common stock of the Issuer.

F4: 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.

F5: 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.

F6: 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.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 01, 2020 Filed Sep 3, 2020 16:17 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.00001 68,817 $0.00 $0.00
Disclosure

SEC source: 0001580808-20-000091 · wf-form4_159916424208980.xml · nonDerivative · entry 2

Singer Eric · CIK 0001443284 · Director · 10% owner

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · 10% owner

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · 10% owner

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · 10% owner

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · 10% owner

VIEX GP, LLC · CIK 0001654852 · 10% owner

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · 10% owner

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · 10% owner

VIEX Capital Advisors, LLC · CIK 0001619125 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Opportunities Fund, LP - Series One

Disclosed balance after: 1,465,781

F4 · shares: Represents a distribution of shares of the Issuer from Series One to a limited partner of Series One.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
August 03, 2020 Filed Aug 5, 2020 16:12 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.00001 123,762 $0.00 $0.00
Disclosure

SEC source: 0001580808-20-000087 · wf-form4_159665835222629.xml · nonDerivative · entry 2

Singer Eric · CIK 0001443284 · Director · 10% owner

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · 10% owner

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · 10% owner

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · 10% owner

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · 10% owner

VIEX GP, LLC · CIK 0001654852 · 10% owner

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · 10% owner

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · 10% owner

VIEX Capital Advisors, LLC · CIK 0001619125 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Opportunities Fund, LP - Series One

Disclosed balance after: 1,534,598

F3 · shares: Represents a distribution of shares of the Issuer from Series One to a limited partner of Series One for no consideration.

F2 · ownership.nature: 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 Mr. Singer (collectively, the "Reporting Persons").

F4 · ownership.nature: 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.

F5 · ownership.nature: 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 the inclusion of these shares in 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.

Read SEC document
December 10, 2019 Filed Dec 13, 2019 01:04 UTC QUANTUM CORP /DE/ QMCO · Entity 4987 SaleCommon Stock, par value $0.001 252,469 $5.78 $1,458,008.48
Disclosure

SEC source: 0000921895-19-002984 · form410114016_12122019.xml · nonDerivative · entry 4

Singer Eric · CIK 0001443284 · 10% owner · See Explanation of Responses

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · See Explanation of Responses

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · See Explanation of Responses

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · See Explanation of Responses

VIEX GP, LLC · CIK 0001654852 · See Explanation of Responses

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · See Explanation of Responses

VIEX Capital Advisors, LLC · CIK 0001619125 · See Explanation of Responses

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund III, LP

Disclosed balance after: 2,336,364

F1 · security: 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 III, LP ("VSO III"), VIEX GP, LLC ("VIEX GP"), Viex Special Opportunities GP III, LLC ("VSO GP III"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons").

F2 · security: As of the close of business on December 10, 2019, the Reporting Persons ceased to be holders of an aggregate of 10% or more of Quantum Corporation's (the "Issuer") outstanding shares of Common Stock. 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.

F6 · ownership.nature: 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.

Read SEC document
December 10, 2019 Filed Dec 13, 2019 01:04 UTC QUANTUM CORP /DE/ QMCO · Entity 4987 SaleCommon Stock, par value $0.001 17,227 $5.78 $99,485.93
Disclosure

SEC source: 0000921895-19-002984 · form410114016_12122019.xml · nonDerivative · entry 3

Singer Eric · CIK 0001443284 · 10% owner · See Explanation of Responses

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · See Explanation of Responses

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · See Explanation of Responses

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · See Explanation of Responses

VIEX GP, LLC · CIK 0001654852 · See Explanation of Responses

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · See Explanation of Responses

VIEX Capital Advisors, LLC · CIK 0001619125 · See Explanation of Responses

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Opportunities Fund, LP - Series Two

Disclosed balance after: 159,421

F1 · security: 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 III, LP ("VSO III"), VIEX GP, LLC ("VIEX GP"), Viex Special Opportunities GP III, LLC ("VSO GP III"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons").

F2 · security: As of the close of business on December 10, 2019, the Reporting Persons ceased to be holders of an aggregate of 10% or more of Quantum Corporation's (the "Issuer") outstanding shares of Common Stock. 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 · ownership.nature: 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.

Read SEC document
December 10, 2019 Filed Dec 13, 2019 01:04 UTC QUANTUM CORP /DE/ QMCO · Entity 4987 SaleCommon Stock, par value $0.001 90,304 $5.78 $521,505.60
Disclosure

SEC source: 0000921895-19-002984 · form410114016_12122019.xml · nonDerivative · entry 2

Singer Eric · CIK 0001443284 · 10% owner · See Explanation of Responses

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · See Explanation of Responses

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · See Explanation of Responses

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · See Explanation of Responses

VIEX GP, LLC · CIK 0001654852 · See Explanation of Responses

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · See Explanation of Responses

VIEX Capital Advisors, LLC · CIK 0001619125 · See Explanation of Responses

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Opportunities Fund, LP - Series One

Disclosed balance after: 835,679

F1 · security: 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 III, LP ("VSO III"), VIEX GP, LLC ("VIEX GP"), Viex Special Opportunities GP III, LLC ("VSO GP III"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons").

F2 · security: As of the close of business on December 10, 2019, the Reporting Persons ceased to be holders of an aggregate of 10% or more of Quantum Corporation's (the "Issuer") outstanding shares of Common Stock. 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.

F4 · ownership.nature: 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.

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCall Option (Right to Buy) · Derivative 1,509 $0.00 Strike: $2.50 $0.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · derivative · entry 16

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Opportunities Fund, LP - Series Two

Disclosed balance after: 0

Underlying: Common Stock, par value $0.00001 · 150,900 shares

Expires 2019-11-15

F9 · kind: 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.

F12 · derivative.exercise_date: These options were exercisable when exercised.

F2 · ownership.nature: 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").

F4 · ownership.nature: 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.

F10 · ownership.nature: 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.

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCall Option (Right to Buy) · Derivative 58 $0.00 Strike: $5.00 $0.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · derivative · entry 15

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund III, LP

Disclosed balance after: 0

Underlying: Common Stock, par value $0.00001 · 5,800 shares

Expires 2019-11-15

F7 · kind: 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.

F12 · derivative.exercise_date: These options were exercisable when exercised.

F2 · ownership.nature: 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").

F4 · ownership.nature: 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.

F8 · ownership.nature: 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.

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCall Option (Right to Buy) · Derivative 2,105 $0.00 Strike: $2.50 $0.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · derivative · entry 14

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund III, LP

Disclosed balance after: 0

Underlying: Common Stock, par value $0.00001 · 210,500 shares

Expires 2019-11-15

F7 · kind: 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.

F12 · derivative.exercise_date: These options were exercisable when exercised.

F2 · ownership.nature: 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").

F4 · ownership.nature: 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.

F8 · ownership.nature: 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.

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCall Option (Right to Buy) · Derivative 1,500 $0.00 Strike: $2.50 $0.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · derivative · entry 13

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 0

Underlying: Common Stock, par value $0.00001 · 150,000 shares

Expires 2019-11-15

F6 · kind: 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.

F12 · derivative.exercise_date: These options were exercisable when exercised.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCall Option (Right to Buy) · Derivative 59 $0.00 Strike: $5.00 $0.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · derivative · entry 12

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 0

Underlying: Common Stock, par value $0.00001 · 5,900 shares

Expires 2019-11-15

F6 · kind: 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.

F12 · derivative.exercise_date: These options were exercisable when exercised.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherPut Option (Obligation to Buy) · Derivative 1,328 $0.00 Strike: $7.50 $0.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · derivative · entry 11

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 0

Underlying: Common Stock, par value $0.00001 · 132,800 shares

Expires 2019-11-15

F5 · kind: 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.

F12 · derivative.exercise_date: These options were exercisable when exercised.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.00001 150,900 $2.50 $377,250.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · nonDerivative · entry 7

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Opportunities Fund, LP - Series Two

Disclosed balance after: 482,877

F9 · kind: 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.

F2 · ownership.nature: 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").

F4 · ownership.nature: 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.

F10 · ownership.nature: 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.

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.00001 210,500 $2.50 $526,250.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · nonDerivative · entry 6

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund III, LP

Disclosed balance after: 487,416

F7 · kind: 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.

F2 · ownership.nature: 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").

F4 · ownership.nature: 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.

F8 · ownership.nature: 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.

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.0000 5,800 $5.00 $29,000.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · nonDerivative · entry 5

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund III, LP

Disclosed balance after: 276,916

F7 · kind: 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.

F2 · ownership.nature: 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").

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.00001 150,000 $2.50 $375,000.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · nonDerivative · entry 4

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 5,255,022

F6 · kind: 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.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.00001 5,900 $5.00 $29,500.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · nonDerivative · entry 3

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 5,105,022

F6 · kind: 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.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
November 15, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.00001 132,800 $7.50 $996,000.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · nonDerivative · entry 2

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 5,099,122

F5 · kind: 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.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
November 14, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherPut Option (Obligation to Buy) · Derivative 672 $0.00 Strike: $7.50 $0.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · derivative · entry 10

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 1,328

Underlying: Common Stock, par value $0.00001 · 67,200 shares

Expires 2019-11-15

F1 · kind: 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.

F12 · derivative.exercise_date: These options were exercisable when exercised.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
November 14, 2019 Filed Nov 18, 2019 16:27 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.00001 67,200 $7.50 $504,000.00
Disclosure

SEC source: 0001209191-19-056945 · doc4.xml · nonDerivative · entry 1

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 4,966,322

F1 · kind: 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 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
August 16, 2019 Filed Aug 19, 2019 17:31 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherPut Option (Obligation to Buy) · Derivative 1,117 $0.00 Strike: $5.00 $0.00
Disclosure

SEC source: 0001209191-19-046654 · doc4.xml · derivative · entry 7

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 0

Underlying: Common Stock, par value $0.00001 · 111,700 shares

Expires 2019-08-16

F9 · kind: Put options expired on August 16, 2019.

F9 · derivative.exercise_date: Put options expired on August 16, 2019.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
August 16, 2019 Filed Aug 19, 2019 17:31 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherPut Option (Obligation to Buy) · Derivative 11,048 $0.00 Strike: $7.50 $0.00
Disclosure

SEC source: 0001209191-19-046654 · doc4.xml · derivative · entry 6

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 0

Underlying: Common Stock, par value $0.00001 · 1,104,800 shares

Expires 2019-08-16

F1 · kind: 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 11,048 put option contracts on August 16, 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.

F8 · derivative.exercise_date: These options are currently exercisable.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
August 16, 2019 Filed Aug 19, 2019 17:31 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.00001 1,104,800 $7.50 $8,286,000.00
Disclosure

SEC source: 0001209191-19-046654 · doc4.xml · nonDerivative · entry 1

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 4,899,122

F1 · kind: 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 11,048 put option contracts on August 16, 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 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

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August 15, 2019 Filed Aug 16, 2019 18:10 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherPut Option (Obligation to Buy) · Derivative 2,179 $0.00 Strike: $7.50 $0.00
Disclosure

SEC source: 0001209191-19-046403 · doc4.xml · derivative · entry 8

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 11,048

Underlying: Common Stock, par value $0.00001 · 217,900 shares

Expires 2019-08-16

F1 · kind: Shares of Common Stock of A10 Networks, Inc. (the "Issuer") beneficially owned directly by VSO II or options sold by VSO II. The transactions reported herein represent the exercises of (i) 452 put option contracts on August 14, 2019 and (ii) 2,179 put option contracts on August 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.

F8 · derivative.exercise_date: These options are currently exercisable.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

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August 15, 2019 Filed Aug 16, 2019 18:10 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.00001 217,900 $7.50 $1,634,250.00
Disclosure

SEC source: 0001209191-19-046403 · doc4.xml · nonDerivative · entry 2

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 3,794,322

F1 · kind: Shares of Common Stock of A10 Networks, Inc. (the "Issuer") beneficially owned directly by VSO II or options sold by VSO II. The transactions reported herein represent the exercises of (i) 452 put option contracts on August 14, 2019 and (ii) 2,179 put option contracts on August 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.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

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August 14, 2019 Filed Aug 16, 2019 18:10 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherPut Option (Obligation to Buy) · Derivative 452 $0.00 Strike: $7.50 $0.00
Disclosure

SEC source: 0001209191-19-046403 · doc4.xml · derivative · entry 7

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 13,227

Underlying: Common Stock, par value $0.00001 · 45,200 shares

Expires 2019-08-16

F1 · kind: Shares of Common Stock of A10 Networks, Inc. (the "Issuer") beneficially owned directly by VSO II or options sold by VSO II. The transactions reported herein represent the exercises of (i) 452 put option contracts on August 14, 2019 and (ii) 2,179 put option contracts on August 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.

F8 · derivative.exercise_date: These options are currently exercisable.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

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August 14, 2019 Filed Aug 16, 2019 18:10 UTC A10 Networks, Inc. ATEN · Entity 4574 OtherCommon Stock, par value $0.00001 45,200 $7.50 $339,000.00
Disclosure

SEC source: 0001209191-19-046403 · doc4.xml · nonDerivative · entry 1

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · Director

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · Director

VIEX GP, LLC · CIK 0001654852 · Director

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · Director

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · Director

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · Director

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · Director

VIEX Capital Advisors, LLC · CIK 0001619125 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Viex Special Opportunities Fund II, LP

Disclosed balance after: 3,576,422

F1 · kind: Shares of Common Stock of A10 Networks, Inc. (the "Issuer") beneficially owned directly by VSO II or options sold by VSO II. The transactions reported herein represent the exercises of (i) 452 put option contracts on August 14, 2019 and (ii) 2,179 put option contracts on August 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.

F2 · ownership.nature: 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 · ownership.nature: 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 · ownership.nature: 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.

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July 26, 2019 Filed Jul 30, 2019 17:02 UTC A10 Networks, Inc. ATEN · Entity 4574 GrantCommon Stock, par value $0.00001 30,120 $0.00 $0.00
Disclosure

SEC source: 0000921895-19-002071 · form410114025_07302019.xml · nonDerivative · entry 1

Singer Eric · CIK 0001443284 · Director

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · See Explanation of Responses

VIEX Opportunities Fund, LP - Series Two · CIK 0001659404 · See Explanation of Responses

VIEX Special Opportunities Fund II, LP · CIK 0001619127 · See Explanation of Responses

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · See Explanation of Responses

VIEX GP, LLC · CIK 0001654852 · See Explanation of Responses

VIEX Special Opportunities GP II, LLC · CIK 0001658891 · See Explanation of Responses

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · See Explanation of Responses

VIEX Capital Advisors, LLC · CIK 0001619125 · See Explanation of Responses

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,120

F2 · balance_after: Each share is represented by a restricted stock unit, which vests in three equal annual installments on the anniversary of the grant date of 07/26/2019, provided that the Reporting Person continues to serve through each vesting date.

F1 · ownership.direct: 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").

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December 01, 2017 Filed Dec 4, 2017 21:18 UTC QUANTUM CORP /DE/ QTM · Entity 4987 GrantCommon Stock 16,681 $0.00 $0.00
Disclosure

SEC source: 0001209191-17-063533 · doc4.xml · nonDerivative · entry 1

Singer Eric · CIK 0001443284 · Director · 10% owner

VIEX Opportunities Fund, LP Series One · CIK 0001606750 · 10% owner

VIEX Opportunities Fund, LP Series Two · CIK 0001659404 · 10% owner

VIEX Special Opportunities Fund III, LP · CIK 0001619126 · 10% owner

VIEX Special Opportunities GP III, LLC · CIK 0001676049 · 10% owner

VIEX GP, LLC · CIK 0001654852 · 10% owner

VIEX Capital Advisors, LLC · CIK 0001619125 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,681

F1 · security: This Form 4 is filed jointly by VIEX Opportunities Fund, LP - Series One ("Series One"), a series of VIEX Opportunities Fund, LP ("VIEX Opportunities"), a series limited partnership, VIEX Opportunities Fund, LP - Series Two ("Series Two"), a series of VIEX Opportunities, VIEX Special Opportunities Fund III, LP ("VSO III"), VIEX GP, LLC ("VIEX GP"), VIEX Special Opportunities GP III, LLC ("VSO GP III"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons").

F2 · security: The Reporting Persons are filing this report because each of the Reporting Persons is a member of a Section 13(d) group, disclosed in a Schedule 13D filed on behalf of the Reporting Persons, as it may be amended, which beneficially owns in the aggregate more than 10% of the Issuer's outstanding shares of Common Stock. Each Reporting Person disclaims beneficial ownership of the shares of Common Stock 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 shares of Common Stock for purposes of Section 16 or for any other purpose.

F3 · shares: Restricted stock units will fully vest on the earlier to occur of: i) the date of Quantum Corporation's next Annual Stockholder Meeting; and ii) September 1, 2018.

F4 · balance_after: Reflects a 1-for-8 reverse stock split of the Issuer's common stock effected on April 18, 2017.

F5 · balance_after: Mr. Singer, as the managing member of VIEX GP and VIEX Capital, may be deemed the beneficial owner of the (i) 925,983 Shares owned by Series One, (ii) 176,648 Shares owned by Series Two and (iii) 2,588,833 owned by VSO III.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.