ATEN

SEC source: 0001580808-21-000122 · wf-form4_162879861140704.xml · derivative · entry 4

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,287

Underlying: Common Stock · 11,643 shares

Expires 2025-02-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject tothe achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2,2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 11,643 units meeting the appropriate performance-basedconditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and secondanniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject tothe achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2,2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 11,643 units meeting the appropriate performance-basedconditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and secondanniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000116 · wf-form4_162862947400572.xml · nonDerivative · entry 1

Becker Brian · CIK 0001826095 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,197

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units.

F2 · balance_after: Includes shares acquired by the Reporting Person pursuant to the Issuer's Employee Stock Purchase Plan.

SEC source: 0001580808-21-000124 · wf-form4_162879872892394.xml · derivative · entry 4

BRUENING MATTHEW P · CIK 0001188611 · EVP, Worldwide Sales & Mktg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,944

Underlying: Common Stock · 13,972 shares

Expires 2025-02-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 13,972 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 13,972 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000124 · wf-form4_162879872892394.xml · nonDerivative · entry 1

BRUENING MATTHEW P · CIK 0001188611 · EVP, Worldwide Sales & Mktg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 121,725

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 13,972 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000122 · wf-form4_162879861140704.xml · nonDerivative · entry 1

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 280,027

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject tothe achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2,2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 11,643 units meeting the appropriate performance-basedconditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and secondanniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

F2 · balance_after: Includes shares acquired by the Reporting Person pursuant to the Issuer's Employee Stock Purchase Plan.

SEC source: 0001580808-21-000123 · wf-form4_162879866416137.xml · derivative · entry 4

Trivedi Dhrupad · CIK 0001570462 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 79,175

Underlying: Common Stock · 39,587 shares

Expires 2025-02-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 39,587 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 39,587 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000123 · wf-form4_162879866416137.xml · nonDerivative · entry 1

Trivedi Dhrupad · CIK 0001570462 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 454,596

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 39,587 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000121 · wf-form4_162879855932155.xml · derivative · entry 4

Becker Brian · CIK 0001826095 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,630

Underlying: Common Stock · 9,314 shares

Expires 2025-02-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 9,314 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 9,314 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000121 · wf-form4_162879855932155.xml · nonDerivative · entry 1

Becker Brian · CIK 0001826095 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,511

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 9,314 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000091 · wf-form4_162041885302360.xml · nonDerivative · entry 1

BRUENING MATTHEW P · CIK 0001188611 · EVP, Worldwide Sales & Mktg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 107,753

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: This is the weighted average price of the shares sold, which ranged from $8.81 to $8.82 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

SEC source: 0001580808-21-000090 · wf-form4_162041883694443.xml · nonDerivative · entry 1

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 267,050

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: This is the weighted average price of the shares sold, which ranged from $8.81 to $8.82 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

SEC source: 0001179110-21-004801 · edgar.xml · nonDerivative · entry 1

SUMMIT PARTNERS L P · CIK 0000830588 · Director · 10% owner · Manager of GP of 10% owner

Summit Partners GE VIII, LLC · CIK 0001593948 · Director · GP of 10% owner

SUMMIT PARTNERS GE VIII, L.P. · CIK 0001593029 · Director · GP of 10% owner

Summit Partners Growth Equity Fund VIII-A, L.P. · CIK 0001514386 · Director · 10% owner

Summit Partners Growth Equity Fund VIII-B, L.P. · CIK 0001514388 · Director · 10% owner

SUMMIT MASTER COMPANY, LLC · CIK 0001627278 · Director · Manager of Manager of 10% owne

Summit Investors Management, LLC · CIK 0001507545 · Director · Manager and GP of 10% Owner

Summit Investors I, LLC · CIK 0001435565 · Director · 10% owner

Summit Investors I (UK), L.P. · CIK 0001494616 · Director · 10% owner

MANNION MARTIN J · CIK 0001018067 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes.

Disclosed balance after: 9,577,890

F1 · shares: Represents restricted stock units ("RSUs") of the Company granted to Mr. Chung as part of the Company's director compensation program. Each share is represented by a RSU. The RSUs will vest on the earlier of the first anniversary of the grant date or the date of the Issuer's next Annual Meeting, subject to the Reporting Person's continued service as of such date. Mr. Chung holds any RSUs for the benefit of Summit Partners, L.P., which he has empowered to determine when the underlying shares of Common Stock will be sold and which is entitled to the proceeds of any such sales.

F2 · balance_after: The Common Stock is held as follows: 6,873,136 shares in the name of Summit Partners Growth Equity Fund VIII-A, L.P.; 2,510,989 shares in the name of Summit Partners Growth Equity Fund VIII-B, L.P.; 40,186 shares in the name of Summit Investors I, LLC; 3,535 shares in the name of Summit Investors I (UK), L.P.; 150,044 shares (including shares underlying RSUs) in the name of Mr. Chung, which are held for the benefit of Summit Partners, L.P.

F3 · ownership.nature: Summit Partners, L.P. is the managing member of Summit Partners GE VIII, LLC, which is the general partner of Summit Partners GE VIII, L.P., which is the general partner of each of Summit Partners Growth Equity Fund VIII-A, L.P. and Summit Partners Growth Equity Fund VIII-B, L.P. Summit Master Company, LLC is the managing member of Summit Investors Management, LLC, which is the manager of Summit Investors I, LLC and the general partner of Summit Investors I (UK), L.P. Summit Partners GE VIII, LLC, as the general partner of Summit Partners GE VIII, L.P., and Summit Master Company, LLC, as the managing member of Summit Investors Management, LLC has each delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its Investment Committee responsible for voting and investment decisions with respect to the Company.

F4 · ownership.nature: Summit Partners, L.P., through a two-person Investment Committee responsible for voting and investment decisions with respect to the Company, currently composed of Martin J. Mannion and Mr. Chung, has voting and dispositive authority over the shares of Common Stock held by each of the entities described in the foregoing footnotes (2) and (3) and therefore may be deemed to beneficially own such shares. In addition, Mr. Chung is a member of Summit Master Company, LLC. Each of the Summit entities, Mr. Mannion and Mr. Chung disclaims beneficial ownership of the shares of Common Stock (including shares underlying RSUs) reported herein, except to the extent of their pecuniary interest therein.

SEC source: 0001580808-21-000081 · wf-form4_162007382014913.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 II, LP · CIK 0001619127 · 10% owner

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

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 73,139

F1 · shares: Each share is represented by a Restricted Stock Unit ("RSU"). The RSUs will vest on the earlier of the first anniversary of the grant date or the date of the Issuer's next Annual Meeting, subject to the Reporting Person's continued service as of such date.

F2 · 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").

F3 · ownership.direct: Each Reporting Person disclaims beneficial ownership of the securities of the Issuer reported herein except to the extent of his or its pecuniary interest therein, and this report shall not be deemed to be an admission that any Reporting Person is the beneficial owner of such securities for purposes of Section 16 or any other purpose.

SEC source: 0001179110-21-004802 · edgar.xml · nonDerivative · entry 1

CHUNG PETER Y · CIK 0001239366 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes.

Disclosed balance after: 9,577,890

F1 · shares: Represents restricted stock units ("RSUs") of the Company granted to Mr. Chung as part of the Company's director compensation program. Each share is represented by a RSU. The RSUs will vest on the earlier of the first anniversary of the grant date or the date of the Issuer's next Annual Meeting, subject to the Reporting Person's continued service as of such date. Mr. Chung holds any RSUs for the benefit of Summit Partners, L.P., which he has empowered to determine when the underlying shares of Common Stock will be sold and which is entitled to the proceeds of any such sales.

F2 · balance_after: The Common Stock is held as follows: 6,873,136 shares in the name of Summit Partners Growth Equity Fund VIII-A, L.P.; 2,510,989 shares in the name of Summit Partners Growth Equity Fund VIII-B, L.P.; 40,186 shares in the name of Summit Investors I, LLC; 3,535 shares in the name of Summit Investors I (UK), L.P.; 150,044 shares (including shares underlying RSUs) in the name of Mr. Chung, which are held for the benefit of Summit Partners, L.P.

F3 · ownership.nature: Summit Partners, L.P. is the managing member of Summit Partners GE VIII, LLC, which is the general partner of Summit Partners GE VIII, L.P., which is the general partner of each of Summit Partners Growth Equity Fund VIII-A, L.P. and Summit Partners Growth Equity Fund VIII-B, L.P. Summit Master Company, LLC is the managing member of Summit Investors Management, LLC, which is the manager of Summit Investors I, LLC and the general partner of Summit Investors I (UK), L.P. Summit Partners GE VIII, LLC, as the general partner of Summit Partners GE VIII, L.P., and Summit Master Company, LLC, as the managing member of Summit Investors Management, LLC has each delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its Investment Committee responsible for voting and investment decisions with respect to the Company.

F4 · ownership.nature: Summit Partners, L.P., through a two-person Investment Committee responsible for voting and investment decisions with respect to the Company, currently composed of Martin J. Mannion and Mr. Chung, has voting and dispositive authority over the shares of Common Stock held by each of the entities described in the foregoing footnotes (2) and (3) and therefore may be deemed to beneficially own such shares. In addition, Mr. Chung is a member of Summit Master Company, LLC. Each of the Summit entities, Mr. Mannion and Mr. Chung disclaims beneficial ownership of the shares of Common Stock (including shares underlying RSUs) reported herein, except to the extent of their pecuniary interest therein.

SEC source: 0001580808-21-000083 · wf-form4_162007385076114.xml · nonDerivative · entry 1

Dotz Mary · CIK 0001314205 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,948

F1 · shares: Each share is represented by a Restricted Stock Unit ("RSU"). The RSUs will vest on the earlier of the first anniversary of the grant date or the date of the Issuer's next Annual Meeting, subject to the Reporting Person's continued service as of such date.

SEC source: 0001580808-21-000082 · wf-form4_162007383447015.xml · nonDerivative · entry 1

Braham Tor · CIK 0001586400 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 135,558

F1 · shares: Each share is represented by a Restricted Stock Unit ("RSU"). The RSUs will vest on the earlier of the first anniversary of the grant date or the date of the Issuer's next Annual Meeting, subject to the Reporting Person's continued service as of such date.

SEC source: 0001580808-21-000072 · wf-form4_161965102357132.xml · nonDerivative · entry 1

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 269,677

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units.

SEC source: 0001580808-21-000064 · wf-form4_161783804630892.xml · nonDerivative · entry 1

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 273,067

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units.

SEC source: 0001580808-21-000062 · wf-form4_161705683669151.xml · nonDerivative · entry 1

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 275,362

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units.

SEC source: 0001580808-21-000060 · wf-form4_161705672781305.xml · nonDerivative · entry 1

Becker Brian · CIK 0001826095 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,392

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units.

SEC source: 0001580808-21-000058 · wf-form4_161670913805128.xml · derivative · entry 2

BRUENING MATTHEW P · CIK 0001188611 · EVP, Worldwide Sales & Mktg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,334

Underlying: Common Stock · 33,333 shares

Expires 2024-04-29

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on May 1, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between April 29, 2020 and April 29, 2024. The second achievement date occurred on March 12, 2021 as certified by the compensation committee of ATEN on March 23, 2021, resulting in 33,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on each of the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on May 1, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between April 29, 2020 and April 29, 2024. The second achievement date occurred on March 12, 2021 as certified by the compensation committee of ATEN on March 23, 2021, resulting in 33,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on each of the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000058 · wf-form4_161670913805128.xml · nonDerivative · entry 1

BRUENING MATTHEW P · CIK 0001188611 · EVP, Worldwide Sales & Mktg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 109,630

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Performance-Based Restricted Stock Units were previously reported on May 1, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between April 29, 2020 and April 29, 2024. The second achievement date occurred on March 12, 2021 as certified by the compensation committee of ATEN on March 23, 2021, resulting in 33,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on each of the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000056 · wf-form4_161670908528345.xml · derivative · entry 2

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,468

Underlying: Common Stock · 20,468 shares

Expires 2024-07-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on July 7, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 2, 2020 and July 2, 2024. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 20,468 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone with an additional one-third to vest on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on July 7, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 2, 2020 and July 2, 2024. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 20,468 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone with an additional one-third to vest on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000056 · wf-form4_161670908528345.xml · nonDerivative · entry 1

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 277,743

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Performance-Based Restricted Stock Units were previously reported on July 7, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 2, 2020 and July 2, 2024. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 20,468 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone with an additional one-third to vest on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000054 · wf-form4_161670900817194.xml · derivative · entry 2

Trivedi Dhrupad · CIK 0001570462 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 125,000

Underlying: Common Stock · 125,000 shares

Expires 2023-12-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on December 16, 2019, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between December 12, 2019 and December 12, 2023. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 125,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on December 16, 2019, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between December 12, 2019 and December 12, 2023. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 125,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000054 · wf-form4_161670900817194.xml · nonDerivative · entry 1

Trivedi Dhrupad · CIK 0001570462 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 415,009

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Performance-Based Restricted Stock Units were previously reported on December 16, 2019, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between December 12, 2019 and December 12, 2023. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 125,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000052 · wf-form4_161670895598442.xml · derivative · entry 2

Becker Brian · CIK 0001826095 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,334

Underlying: Common Stock · 3,333 shares

Expires 2024-10-19

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000052 · wf-form4_161670895598442.xml · nonDerivative · entry 1

Becker Brian · CIK 0001826095 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,781

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000050 · wf-form4_161602012554219.xml · nonDerivative · entry 1

Becker Brian · CIK 0001826095 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,448

F1 · price: This is the weighted average price of the shares sold, which ranged from $9.20 to $9.21 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

SEC source: 0001580808-21-000035 · wf-form4_161378335751561.xml · nonDerivative · entry 1

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 257,275

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: This is the weighted average price of the shares sold, which ranged from $8.97 to $9.34 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

SEC source: 0001580808-21-000036 · wf-form4_161378342281369.xml · nonDerivative · entry 1

Becker Brian · CIK 0001826095 · Interim CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,533

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: This is the weighted average price of the shares sold, which ranged from $8.97 to $9.34 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

F3 · balance_after: Includes shares acquired by the Reporting Person pursuant to the Issuer's Employee Stock Purchase Plan.

SEC source: 0001580808-21-000028 · wf-form4_161369512977482.xml · nonDerivative · entry 1

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 259,650

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units.

F2 · balance_after: Includes shares acquired by the Reporting Person pursuant to the Issuer's Employee Stock Purchase Plan.

SEC source: 0001580808-21-000017 · wf-form4_161248392953627.xml · derivative · entry 4

BRUENING MATTHEW P · CIK 0001188611 · EVP, Worldwide Sales & Mktg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,667

Underlying: Common Stock · 33,333 shares

Expires 2024-04-29

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on May 1, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between April 29, 2020 and April 29, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 33,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on each of the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

F2 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on May 1, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between April 29, 2020 and April 29, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 33,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on each of the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000017 · wf-form4_161248392953627.xml · derivative · entry 3

BRUENING MATTHEW P · CIK 0001188611 · EVP, Worldwide Sales & Mktg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,916

Underlying: Common Stock · 41,916 shares

Expires 2025-02-02

F3 · derivative.exercise_price: Each share is represented by a Performance-based Restricted Stock Unit ("PSU")

F4 · derivative.exercise_date: Grant of 41,916 Performance-Based Restricted Stock Units, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025 (each, a "Performance Milestone"). Upon achievement of a Performance Milestone, vesting is subject to continued employment with the Company through the applicable vesting date, which occurs in three equal installments with the first vesting to occur within thirty (30) days of achievement of the Performance Milestone and an additional one-third (1/3) on each of the first and second anniversaries of the date of achievement of the corresponding Performance Milestone.

SEC source: 0001580808-21-000017 · wf-form4_161248392953627.xml · nonDerivative · entry 2

BRUENING MATTHEW P · CIK 0001188611 · EVP, Worldwide Sales & Mktg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 76,297

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: Performance-Based Restricted Stock Units were previously reported on May 1, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between April 29, 2020 and April 29, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 33,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on each of the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000017 · wf-form4_161248392953627.xml · nonDerivative · entry 1

BRUENING MATTHEW P · CIK 0001188611 · EVP, Worldwide Sales & Mktg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,964

F1 · shares: Each share is represented by a Restricted Stock Unit ("RSU"). One-third (1/3) of the total RSUs will vest on each of the first three (3) anniversaries of the date of grant, provided that the Reporting Person continues to serve through each vesting date.

SEC source: 0001580808-21-000019 · wf-form4_161248399881984.xml · derivative · entry 4

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,936

Underlying: Common Stock · 20,467 shares

Expires 2024-07-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on July 7, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 2, 2020 and July 2, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 20,467 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within thirty (30) days of achievement of the milestone with an additional one-third to vest on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

F2 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on July 7, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 2, 2020 and July 2, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 20,467 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within thirty (30) days of achievement of the milestone with an additional one-third to vest on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000019 · wf-form4_161248399881984.xml · derivative · entry 3

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,930

Underlying: Common Stock · 34,930 shares

Expires 2025-02-02

F3 · derivative.exercise_price: Each share is represented by a Performance-based Restricted Stock Unit ("PSU")

F4 · derivative.exercise_date: Grant of 34,930 Performance-Based Restricted Stock Units, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025 (each, a "Performance Milestone"). Upon achievement of a Performance Milestone, vesting is subject to continued employment with the Company through the applicable vesting date, which occurs in three equal installments with the first vesting to occur within thirty (30) days of achievement of the Performance Milestone and an additional one-third (1/3) on each of the first and second anniversaries of the date of achievement of the corresponding Performance Milestone.

SEC source: 0001580808-21-000019 · wf-form4_161248399881984.xml · nonDerivative · entry 2

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 262,966

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: Performance-Based Restricted Stock Units were previously reported on July 7, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 2, 2020 and July 2, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 20,467 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within thirty (30) days of achievement of the milestone with an additional one-third to vest on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000019 · wf-form4_161248399881984.xml · nonDerivative · entry 1

COCHRAN ROBERT D · CIK 0001358721 · EVP Legal & Corp Collaboration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 242,499

F1 · shares: Each share is represented by a Restricted Stock Unit ("RSU"). One-third (1/3) of the total RSUs will vest on each of the first three (3) anniversaries of the date of grant, provided that the Reporting Person continues to serve through each vesting date.

SEC source: 0001580808-21-000016 · wf-form4_161248388847618.xml · derivative · entry 4

Trivedi Dhrupad · CIK 0001570462 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 250,000

Underlying: Common Stock · 125,000 shares

Expires 2023-12-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on December 16, 2019, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between December 12, 2019 and December 12, 2023. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN February 2, 2021, resulting in 125,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

F2 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on December 16, 2019, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between December 12, 2019 and December 12, 2023. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN February 2, 2021, resulting in 125,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000016 · wf-form4_161248388847618.xml · derivative · entry 3

Trivedi Dhrupad · CIK 0001570462 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 118,762

Underlying: Common Stock · 118,762 shares

Expires 2025-02-02

F3 · derivative.exercise_price: Each share is represented by a Performance-based Restricted Stock Unit ("PSU")

F4 · derivative.exercise_date: Grant of 118,762 Performance-Based Restricted Stock Units, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025 (each, a "Performance Milestone"). Upon achievement of a Performance Milestone, vesting is subject to continued employment with the Company through the applicable vesting date, which occurs in three equal installments with the first vesting to occur within thirty (30) days of achievement of the Performance Milestone and an additional one-third (1/3) on each of the first and second anniversaries of the date of achievement of the corresponding Performance Milestone.

SEC source: 0001580808-21-000016 · wf-form4_161248388847618.xml · nonDerivative · entry 2

Trivedi Dhrupad · CIK 0001570462 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 290,009

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: Performance-Based Restricted Stock Units were previously reported on December 16, 2019, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between December 12, 2019 and December 12, 2023. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN February 2, 2021, resulting in 125,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third on the first, second and third anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000016 · wf-form4_161248388847618.xml · nonDerivative · entry 1

Trivedi Dhrupad · CIK 0001570462 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 165,009

F1 · shares: Each share is represented by a Restricted Stock Unit ("RSU"). One-third (1/3) of the total RSUs will vest on each of the first three (3) anniversaries of the date of grant, provided that the Reporting Person continues to serve through each vesting date.

SEC source: 0001580808-21-000018 · wf-form4_161248396282362.xml · derivative · entry 6

Becker Brian · CIK 0001826095 · Interim CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,667

Underlying: Common Stock · 3,333 shares

Expires 2024-10-19

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

F3 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000018 · wf-form4_161248396282362.xml · derivative · entry 5

Becker Brian · CIK 0001826095 · Interim CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,250 shares

Expires 2024-07-20

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on September 25, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 20, 2020 and July 20, 2024. The achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,250 units meeting the appropriate performance-based conditions. These shares will therefore vest as to one-half within thirty (30) days of the date of achievement of the milestone with an additional one-fourth on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

F2 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on September 25, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 20, 2020 and July 20, 2024. The achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,250 units meeting the appropriate performance-based conditions. These shares will therefore vest as to one-half within thirty (30) days of the date of achievement of the milestone with an additional one-fourth on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000018 · wf-form4_161248396282362.xml · derivative · entry 4

Becker Brian · CIK 0001826095 · Interim CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,944

Underlying: Common Stock · 27,944 shares

Expires 2025-02-02

F4 · derivative.exercise_price: Each share is represented by a Performance-based Restricted Stock Unit ("PSU")

F5 · derivative.exercise_date: Grant of 27,944 Performance-Based Restricted Stock Units, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025 (each, a "Performance Milestone"). Upon achievement of a Performance Milestone, vesting is subject to continued employment with the Company through the applicable vesting date, which occurs in three equal installments with the first vesting to occur within thirty (30) days of achievement of the Performance Milestone and an additional one-third (1/3) on each of the first and second anniversaries of the date of achievement of the corresponding Performance Milestone.

SEC source: 0001580808-21-000018 · wf-form4_161248396282362.xml · nonDerivative · entry 3

Becker Brian · CIK 0001826095 · Interim CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,087

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · shares: Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000018 · wf-form4_161248396282362.xml · nonDerivative · entry 2

Becker Brian · CIK 0001826095 · Interim CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,754

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: Performance-Based Restricted Stock Units were previously reported on September 25, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 20, 2020 and July 20, 2024. The achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,250 units meeting the appropriate performance-based conditions. These shares will therefore vest as to one-half within thirty (30) days of the date of achievement of the milestone with an additional one-fourth on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.

SEC source: 0001580808-21-000018 · wf-form4_161248396282362.xml · nonDerivative · entry 1

Becker Brian · CIK 0001826095 · Interim CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,504

F1 · shares: Each share is represented by a Restricted Stock Unit ("RSU"). One-third (1/3) of the total RSUs will vest on each of the first three (3) anniversaries of the date of grant, provided that the Reporting Person continues to serve through each vesting date.