Sec Form 4 Filing - Silver Private Holdings I, LLC @ SYNCHRONOSS TECHNOLOGIES INC - 2021-06-30

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Silver Private Holdings I, LLC 2. Issuer Name and Ticker or Trading Symbol SYNCHRONOSS TECHNOLOGIES INC [ SNCR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O SIRIS CAPITAL GROUP, LLC, 601 LEXINGTON AVENUE, 59TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 06/30/2021 (Street) NEW YORK, NY10022 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Series A Convertible Participating Perpetual Preferred Stock $ 18 06/30/2021 D( 6 ) 278,665 ( 8 ) ( 8 ) Common Stock, par value $0.0001 per share 15,481,401 ( 7 ) ( 6 ) 0 ( 6 ) D ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Silver Private Holdings I, LLC C/O SIRIS CAPITAL GROUP, LLC 601 LEXINGTON AVENUE, 59TH FLOOR NEW YORK, NY10022 X X Silver Private Investments, LLC C/O SIRIS CAPITAL GROUP, LLC 601 LEXINGTON AVENUE, 59TH FLOOR NEW YORK, NY10022 X X Siris Partners III, L.P. C/O SIRIS CAPITAL GROUP, LLC 601 LEXINGTON AVENUE, 59TH FLOOR NEW YORK, NY10022 X X Siris Partners III Parallel, L.P. C/O SIRIS CAPITAL GROUP, LLC 601 LEXINGTON AVENUE, 59TH FLOOR NEW YORK, NY10022 X X Siris Partners GP III, L.P. C/O SIRIS CAPITAL GROUP, LLC 601 LEXINGTON AVENUE, 59TH FLOOR NEW YORK, NY10022 X X Siris GP HoldCo III, LLC C/O SIRIS CAPITAL GROUP, LLC 601 LEXINGTON AVENUE, 59TH FLOOR NEW YORK, NY10022 X X Siris Capital Group, LLC 601 LEXINGTON AVENUE, 59TH FLOOR NEW YORK, NY10022 X X Siris Group GP, LLC C/O SIRIS CAPITAL GROUP, LLC 601 LEXINGTON AVENUE, 59TH FLOOR NEW YORK, NY10022 X X Signatures See Exhibit 99.1 07/01/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This Form 4 is being jointly filed by and on behalf of each of the following persons (each, a "Reporting Person"): (i) Silver Private Holdings I, LLC, a Delaware limited liability company ("Silver Holdings"); (ii) Silver Private Investments, LLC, a Delaware limited liability company ("Silver Parent"); (iii) Siris Partners III, L.P., a Delaware limited partnership ("Siris Fund III"); (iv) Siris Partners III Parallel, L.P., a Delaware limited partnership ("Siris Fund III Parallel"); (v) Siris Partners GP III, L.P., a Delaware limited partnership ("Siris Fund III GP"); (vi) Siris GP HoldCo III, LLC, a Delaware limited liability company ("Siris Fund III GP HoldCo"); (vii) Siris Capital Group, LLC, a Delaware limited liability company ("Siris Capital Group"); and (viii) Siris Group GP, LLC, a Cayman Islands exempted limited liability company ("Siris Group GP"). ( 2 )Silver Holdings is controlled by its sole member, Silver Parent. Silver Parent is controlled by its members, Siris Fund III and Siris Fund III Parallel. Each of Siris Fund III and Siris Fund III Parallel is controlled by its general partner, Siris Fund III GP. Siris Fund III GP is controlled by its general partner, Siris Fund III GP HoldCo. Siris Capital Group serves as investment manager to Siris Fund III and Siris Fund III Parallel pursuant to investment management agreements with each of them. ( 3 )(Continued from Footnote 2) Siris Capital Group is controlled by its managing member, Siris Group GP. Each of Siris Fund III GP HoldCo and Siris Group GP is controlled by Frank Baker, Peter Berger and Jeffrey Hendren. ( 4 )The Reporting Persons may be deemed to be members of a "group" for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder (such Act and rules, as amended, the "Exchange Act"), which group may be deemed to share the power to vote or direct the vote, or to dispose or direct the disposition, of the securities reported herein. However, neither the filing of this Form 4 nor any of its contents shall be deemed to constitute an admission by any of the Reporting Persons that it is a member of a "group" for such purposes, for purposes of Section 16 of the Exchange Act or for any other purpose. ( 5 )(Continued from footnote 4) Each of the Reporting Persons expressly disclaims beneficial ownership of securities held by any other person or entity other than, to the extent of any pecuniary interest therein, the various accounts under such Reporting Person's management and control. Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person. As permitted by Rule 16a-1(a)(4), the filing of this Form 4 shall not be construed as an admission that any of the Reporting Persons are beneficial owners of any of the securities covered by this statement. ( 6 )On June 30, 2021, the Issuer redeemed in full the Reporting Person's Series A Preferred Stock. ( 7 )The number of shares of Common Stock reported herein represents the number of shares of Common Stock that would have been issuable upon conversion of the 278,665 shares of Series A Preferred Stock redeemed by the Issuer. ( 8 )Each share of Series A Preferred Stock may be converted on any date, from time to time, at the option of the holder thereof, and has no expiration date.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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