SIGNATURES OF REPORTING PERSONS
This Statement on Form 4 is filed by the Reporting Persons listed below.
Dated: April 4, 2018
SILVER PRIVATE HOLDINGS I, LLC
By: Silver Private Investments, LLC, its sole
member
By: /s/ Peter Berger
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Name: Peter Berger
Title: Authorized Signatory
SILVER PRIVATE INVESTMENTS, LLC
By: /s/ Peter Berger
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Name: Peter Berger
Title: Authorized Signatory
SIRIS PARTNERS III, L.P.
SIRIS PARTNERS III PARALLEL, L.P.
By: Siris Partners GP III, L.P., its general
partner
By: Siris GP HoldCo III, LLC, its general
partner
By: /s/ Peter Berger
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Name: Peter Berger
Title: Managing Member
SIRIS PARTNERS GP III, L.P.
By: Siris GP HoldCo III, LLC, its general
partner
By: /s/ Peter Berger
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Name: Peter Berger
Title: Managing Member
SIRIS GP HOLDCO III, LLC
By: /s/ Peter Berger
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Name: Peter Berger
Title: Managing Member
SIRIS CAPITAL GROUP III, L.P.
By: Siris Advisor HoldCo III, LLC, its general
partner
By: /s/ Peter Berger
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Name: Peter Berger
Title: Managing Member
SIRIS CAPITAL GROUP, LLC
By: Siris Advisor HoldCo, LLC, its managing
member
By: /s/ Peter Berger
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Name: Peter Berger
Title: Managing Member
SIRIS ADVISOR HOLDCO III, LLC
By: /s/ Peter Berger
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Name: Peter Berger
Title: Managing Member
SIRIS ADVISOR HOLDCO, LLC
By: /s/ Peter Berger
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Name: Peter Berger
Title: Managing Member
Silver Private Holdings I
Filed: 4 Apr 18, 12:00am