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             SECURITIES AND EXCHANGE COMMISSION 
           | 
        
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             Washington, D.C. 20549 
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             SCHEDULE 13D Under the Securities Exchange Act of 1934 
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             (Amendment No. 12)* 
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             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners X, L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)                  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            988,990 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            988,990 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            988,990 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)                         ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.9% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners (Cayman) X, L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)     ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            810,986 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            810,986 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            810,986 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)              ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.7% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners (Delaware) X, L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)   ☐ 
            (b)   ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) 
           | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Delaware 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            156,878 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            156,878 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            156,878 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)   ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.1% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners X (Co-Investors), L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY  
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
           | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            23,532 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            23,532 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            23,532 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.0% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight SN Holdings, LLC 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY  
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Delaware 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            229,795 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            229,795 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            229,795 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.2% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            OO 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight SN Holdings 2, LLC 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Delaware 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            782,727 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            782,727 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            782,727 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.7% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            OO 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners IX, L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            2,580,799 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            2,580,799 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            2,580,799 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            2.2% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners (Cayman) IX, L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            1,282,339 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            1,282,339 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            1,282,339 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            1.1% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners (Delaware) IX, L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
           | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Delaware 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            273,436 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            273,436 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            273,436 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.2% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners IX (Co-Investors), L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            51,517 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            51,517 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            51,517 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.0% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners Growth-Buyout Coinvestment Fund, L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            1,048,810 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            1,048,810 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            1,048,810 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.9% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners Growth-Buyout Coinvestment Fund (Cayman), L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            843,181 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            843,181 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            843,181 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.7% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners Growth-Buyout Coinvestment Fund (Delaware), L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
           | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Delaware 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            775,307 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            775,307 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            775,307 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.7% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Partners Growth-Buyout Coinvestment Fund (B), L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
           | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            954,226 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            954,226 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            954,226 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            0.8% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Associates X, L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
           | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            1,980,386 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            1,980,386 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            1,980,386 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            1.7% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Associates X, Ltd. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            1,980,386 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            1,980,386 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            1,980,386 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            1.7% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            CO 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Associates IX, L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            4,188,091 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            4,188,091 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            4,188,091 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
           | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            3.6% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Associates IX, Ltd. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            4,188,091 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            4,188,091 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            4,188,091 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            3.6% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            CO 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Associates Growth-Buyout Coinvestment, L.P. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            3,621,524 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            3,621,524 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            3,621,524 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            3.1% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            PN 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Venture Associates Growth-Buyout Coinvestment Ltd. 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
             | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Cayman Islands 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            3,621,524 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            3,621,524 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            3,621,524 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            3.1% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            CO 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             CUSIP No. 63947X101 
           | 
          |||||
| 
             1 
           | 
          
             NAMES OF REPORTING PERSONS 
            Insight Holdings Group, LLC 
           | 
        ||||
| 
             2 
           | 
          
             CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)                                       (a)  ☐ 
            (b)  ☐ 
           | 
        ||||
| 
             3 
           | 
          
             SEC USE ONLY 
             | 
        ||||
| 
             4 
           | 
          
             SOURCE OF FUNDS (See Instructions) 
            OO 
           | 
        ||||
| 
             5 
           | 
          
             CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)  ☐ 
             | 
        ||||
| 
             6 
           | 
          
             CITIZENSHIP OR PLACE OF ORGANIZATION 
            Delaware 
           | 
        ||||
| 
             NUMBER OF 
            SHARES 
            BENEFICIALLY 
            OWNED BY EACH 
            REPORTING 
            PERSON WITH 
           | 
          
             7 
           | 
          
             SOLE VOTING POWER 
            0 
           | 
        |||
| 
             8 
           | 
          
             SHARED VOTING POWER 
            9,790,001 (1) 
           | 
        ||||
| 
             9 
           | 
          
             SOLE DISPOSITIVE POWER 
            0 
           | 
        ||||
| 
             10 
           | 
          
             SHARED DISPOSITIVE POWER 
            9,790,001 (1) 
           | 
        ||||
| 
             11 
           | 
          
             AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
            9,790,001 (1) 
           | 
        ||||
| 
             12 
           | 
          
             CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)  ☐ 
             | 
        ||||
| 
             13 
           | 
          
             PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 
            8.5% (1) 
           | 
        ||||
| 
             14 
           | 
          
             TYPE OF REPORTING PERSON (See Instructions) 
            OO 
           | 
        ||||
| 
               (1) 
             | 
            
               See Item 5. 
             | 
          
| 
             Exhibit 7.1 
           | 
          
             Joint Filing Agreement, dated as of January 18, 2022, by and among the Reporting Persons (incorporated by reference to Exhibit 7.1 to the Schedule 13D filed on behalf of the Reporting Persons with the SEC on
              January 18, 2022). 
             | 
        
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS X, L.P. 
                    By: Insight Venture Associates X, L.P., its general partner 
                    By: Insight Venture Associates X, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS (CAYMAN) X, L.P. 
                    By: Insight Venture Associates X, L.P., its general partner 
                    By: Insight Venture Associates X, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                       
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS (DELAWARE) X, L.P. 
                    By: Insight Venture Associates X, L.P., its general partner 
                    By: Insight Venture Associates X, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS X (CO-INVESTORS), L.P. 
                    By: Insight Venture Associates X, L.P., its general partner 
                    By: Insight Venture Associates X, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT SN HOLDINGS, LLC 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT SN HOLDINGS 2, LLC 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS IX, L.P. 
                    By: Insight Venture Associates IX, L.P., its general partner 
                    By: Insight Venture Associates IX, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                       
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS (CAYMAN) IX, L.P. 
                    By: Insight Venture Associates IX, L.P., its general partner 
                    By: Insight Venture Associates IX, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS (DELAWARE) IX, L.P. 
                    By: Insight Venture Associates IX, L.P., its general partner 
                    By: Insight Venture Associates IX, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS IX (CO-INVESTORS), L.P. 
                    By: Insight Venture Associates IX, L.P., its general partner 
                    By: Insight Venture Associates IX, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS GROWTH-BUYOUT COINVESTMENT FUND, L.P. 
                    By: Insight Venture Associates Growth-Buyout Coinvestment, L.P., its general partner 
                    By: Insight Venture Associates Growth-Buyout Coinvestment, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS GROWTH-BUYOUT COINVESTMENT FUND (CAYMAN), L.P. 
                    By: Insight Venture Associates Growth-Buyout Coinvestment, L.P., its general partner 
                    By: Insight Venture Associates Growth-Buyout Coinvestment, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS GROWTH-BUYOUT COINVESTMENT FUND (DELAWARE), L.P. 
                    By: Insight Venture Associates Growth-Buyout Coinvestment, L.P., its general partner 
                    By: Insight Venture Associates Growth-Buyout Coinvestment, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE PARTNERS GROWTH-BUYOUT COINVESTMENT FUND (B), L.P. 
                    By: Insight Venture Associates Growth-Buyout Coinvestment, L.P., its general partner 
                    By: Insight Venture Associates Growth-Buyout Coinvestment, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE ASSOCIATES X, L.P. 
                    By: Insight Venture Associates X, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE ASSOCIATES X, LTD. 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE ASSOCIATES IX, L.P. 
                    By: Insight Venture Associates IX, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE ASSOCIATES IX, LTD. 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE ASSOCIATES GROWTH-BUYOUT COINVESTMENT, L.P. 
                    By: Insight Venture Associates Growth-Buyout Coinvestment, Ltd., its general partner 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT VENTURE ASSOCIATES GROWTH-BUYOUT COINVESTMENT, LTD. 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Authorized Officer 
                   | 
                  ||
| 
                     Dated:  December 12, 2024 
                   | 
                  
                     INSIGHT HOLDINGS GROUP, LLC 
                   | 
                  ||
| 
                     By: 
                   | 
                  
                     /s/ Andrew Prodromos                                      
                   | 
                  ||
| 
                     Name: 
                   | 
                  
                     Andrew Prodromos 
                   | 
                  ||
| 
                     Title: 
                   | 
                  
                     Attorney-in-fact 
                   | 
                  ||