BL

SEC source: 0001209191-17-053168 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,274,296

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $32.60 to $33.52 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: 0001209191-17-052438 · doc4.xml · nonDerivative · entry 2

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,284,321

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

SEC source: 0001209191-17-053173 · doc4a.xml · nonDerivative · entry 2

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,284,321

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

SEC source: 0001209191-17-052438 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,286,446

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $32.85 to $33.09 per share. Upon request by the Commission staff, the Issuer or a security holder of the Issuer, the Reporting Person will provide full information

SEC source: 0001209191-17-053173 · doc4a.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,286,446

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $32.85 to $33.09 per share. Upon request by the Commission staff, the Issuer or a security holder of the Issuer, the Reporting Person will provide full information

SEC source: 0000899243-17-021710 · doc4a.xml · nonDerivative · entry 4

ICONIQ Strategic Partners, L.P. · CIK 0001575779 · 10% owner

ICONIQ Strategic Partners-B, L.P. · CIK 0001584545 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., BL Series · CIK 0001585870 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 · CIK 0001623300 · 10% owner

ICONIQ Strategic Partners GP, L.P. · CIK 0001688390 · 10% owner

ICONIQ Strategic Partners TT GP, Ltd. · CIK 0001688389 · 10% owner

Makan Divesh · CIK 0001688143 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 228,432

F4 · kind: ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 ("ICONIQ BL2") distributed on September 6, 2017, for no consideration, 60,139 shares of Common Stock of the Issuer (the "ICONIQ BL2 Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL2, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL2 Shares it received in the distribution by ICONIQ BL2 to its partners, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F4 · price: ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 ("ICONIQ BL2") distributed on September 6, 2017, for no consideration, 60,139 shares of Common Stock of the Issuer (the "ICONIQ BL2 Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL2, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL2 Shares it received in the distribution by ICONIQ BL2 to its partners, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F8 · ownership.direct: ICONIQ BL2 is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. Divesh Makan ("Makan") is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: Each of ICONIQ GP, ICONIQ Parent GP and Makan disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021710 · doc4a.xml · nonDerivative · entry 3

ICONIQ Strategic Partners, L.P. · CIK 0001575779 · 10% owner

ICONIQ Strategic Partners-B, L.P. · CIK 0001584545 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., BL Series · CIK 0001585870 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 · CIK 0001623300 · 10% owner

ICONIQ Strategic Partners GP, L.P. · CIK 0001688390 · 10% owner

ICONIQ Strategic Partners TT GP, Ltd. · CIK 0001688389 · 10% owner

Makan Divesh · CIK 0001688143 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,583,194

F3 · kind: ICONIQ Strategic Partners Co-Invest, L.P., BL Series ("ICONIQ BL") distributed on September 6, 2017, for no consideration, 416,806 shares of Common Stock of the Issuer (the "ICONIQ BL Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL, representing each such partner's pro rata interest in such ICONIQ BL Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL Shares it received in the distribution by ICONIQ BL to its partners, representing each such partner's pro rata interest in such ICONIQ BL Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F3 · price: ICONIQ Strategic Partners Co-Invest, L.P., BL Series ("ICONIQ BL") distributed on September 6, 2017, for no consideration, 416,806 shares of Common Stock of the Issuer (the "ICONIQ BL Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL, representing each such partner's pro rata interest in such ICONIQ BL Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL Shares it received in the distribution by ICONIQ BL to its partners, representing each such partner's pro rata interest in such ICONIQ BL Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F7 · ownership.direct: ICONIQ BL is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. Divesh Makan ("Makan") is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: Each of ICONIQ GP, ICONIQ Parent GP and Makan disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021710 · doc4a.xml · nonDerivative · entry 2

ICONIQ Strategic Partners, L.P. · CIK 0001575779 · 10% owner

ICONIQ Strategic Partners-B, L.P. · CIK 0001584545 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., BL Series · CIK 0001585870 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 · CIK 0001623300 · 10% owner

ICONIQ Strategic Partners GP, L.P. · CIK 0001688390 · 10% owner

ICONIQ Strategic Partners TT GP, Ltd. · CIK 0001688389 · 10% owner

Makan Divesh · CIK 0001688143 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,264,965

F2 · kind: ICONIQ Strategic Partners-B, L.P. ("ICONIQ B") distributed on September 6, 2017, for no consideration, 333,026 shares of Common Stock of the Issuer (the "ICONIQ B Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ B, representing each such partner's pro rata interest in such ICONIQ B Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ B Shares it received in the distribution by ICONIQ B to its partners, representing each such partner's pro rata interest in such ICONIQ B Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F2 · price: ICONIQ Strategic Partners-B, L.P. ("ICONIQ B") distributed on September 6, 2017, for no consideration, 333,026 shares of Common Stock of the Issuer (the "ICONIQ B Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ B, representing each such partner's pro rata interest in such ICONIQ B Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ B Shares it received in the distribution by ICONIQ B to its partners, representing each such partner's pro rata interest in such ICONIQ B Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F6 · ownership.direct: ICONIQ B is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. Divesh Makan ("Makan") is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: Each of ICONIQ GP, ICONIQ Parent GP and Makan disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021710 · doc4a.xml · nonDerivative · entry 1

ICONIQ Strategic Partners, L.P. · CIK 0001575779 · 10% owner

ICONIQ Strategic Partners-B, L.P. · CIK 0001584545 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., BL Series · CIK 0001585870 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 · CIK 0001623300 · 10% owner

ICONIQ Strategic Partners GP, L.P. · CIK 0001688390 · 10% owner

ICONIQ Strategic Partners TT GP, Ltd. · CIK 0001688389 · 10% owner

Makan Divesh · CIK 0001688143 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,040,104

F1 · kind: ICONIQ Strategic Partners, L.P. ("ICONIQ") distributed on September 6, 2017, for no consideration, 1,326,904 shares of Common Stock of the Issuer (the "ICONIQ Shares") to its limited partners and to Iconiq Strategic Partners GP, L.P. ("ICONIQ GP"), the general partner of ICONIQ, representing each such partner's pro rata interest in such ICONIQ Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ Shares it received in the distribution by ICONIQ to its partners, representing each such partner's pro rata interest in such ICONIQ Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F1 · price: ICONIQ Strategic Partners, L.P. ("ICONIQ") distributed on September 6, 2017, for no consideration, 1,326,904 shares of Common Stock of the Issuer (the "ICONIQ Shares") to its limited partners and to Iconiq Strategic Partners GP, L.P. ("ICONIQ GP"), the general partner of ICONIQ, representing each such partner's pro rata interest in such ICONIQ Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ Shares it received in the distribution by ICONIQ to its partners, representing each such partner's pro rata interest in such ICONIQ Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F5 · ownership.direct: ICONIQ is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. Divesh Makan ("Makan") is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: Each of ICONIQ GP, ICONIQ Parent GP and Makan disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021644 · doc4.xml · nonDerivative · entry 4

ICONIQ Strategic Partners, L.P. · CIK 0001575779 · 10% owner

ICONIQ Strategic Partners-B, L.P. · CIK 0001584545 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., BL Series · CIK 0001585870 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 · CIK 0001623300 · 10% owner

ICONIQ Strategic Partners GP, L.P. · CIK 0001688390 · 10% owner

ICONIQ Strategic Partners TT GP, Ltd. · CIK 0001688389 · 10% owner

Makan Divesh · CIK 0001688143 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 228,432

F4 · kind: ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 ("ICONIQ BL2") distributed on September 6, 2017, for no consideration, 60,139 shares of Common Stock of the Issuer (the "ICONIQ BL2 Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL2, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL2 Shares it received in the distribution by ICONIQ BL2 to its partners, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F4 · price: ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 ("ICONIQ BL2") distributed on September 6, 2017, for no consideration, 60,139 shares of Common Stock of the Issuer (the "ICONIQ BL2 Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL2, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL2 Shares it received in the distribution by ICONIQ BL2 to its partners, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F8 · ownership.direct: ICONIQ BL2 is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. Divesh Makan ("Makan") is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: Each of ICONIQ GP, ICONIQ Parent GP and Makan disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021644 · doc4.xml · nonDerivative · entry 3

ICONIQ Strategic Partners, L.P. · CIK 0001575779 · 10% owner

ICONIQ Strategic Partners-B, L.P. · CIK 0001584545 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., BL Series · CIK 0001585870 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 · CIK 0001623300 · 10% owner

ICONIQ Strategic Partners GP, L.P. · CIK 0001688390 · 10% owner

ICONIQ Strategic Partners TT GP, Ltd. · CIK 0001688389 · 10% owner

Makan Divesh · CIK 0001688143 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,583,194

F3 · kind: ICONIQ Strategic Partners Co-Invest, L.P., BL Series ("ICONIQ BL") distributed on September 6, 2017, for no consideration, 416,806 shares of Common Stock of the Issuer (the "ICONIQ BL Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL, representing each such partner's pro rata interest in such ICONIQ BL Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL Shares it received in the distribution by ICONIQ BL to its partners, representing each such partner's pro rata interest in such ICONIQ BL Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F3 · price: ICONIQ Strategic Partners Co-Invest, L.P., BL Series ("ICONIQ BL") distributed on September 6, 2017, for no consideration, 416,806 shares of Common Stock of the Issuer (the "ICONIQ BL Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL, representing each such partner's pro rata interest in such ICONIQ BL Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL Shares it received in the distribution by ICONIQ BL to its partners, representing each such partner's pro rata interest in such ICONIQ BL Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F7 · ownership.direct: ICONIQ BL is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. Divesh Makan ("Makan") is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: Each of ICONIQ GP, ICONIQ Parent GP and Makan disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021644 · doc4.xml · nonDerivative · entry 2

ICONIQ Strategic Partners, L.P. · CIK 0001575779 · 10% owner

ICONIQ Strategic Partners-B, L.P. · CIK 0001584545 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., BL Series · CIK 0001585870 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 · CIK 0001623300 · 10% owner

ICONIQ Strategic Partners GP, L.P. · CIK 0001688390 · 10% owner

ICONIQ Strategic Partners TT GP, Ltd. · CIK 0001688389 · 10% owner

Makan Divesh · CIK 0001688143 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,264,965

F2 · kind: ICONIQ Strategic Partners-B, L.P. ("ICONIQ B") distributed on September 6, 2017, for no consideration, 333,026 shares of Common Stock of the Issuer (the "ICONIQ B Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ B, representing each such partner's pro rata interest in such ICONIQ B Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ B Shares it received in the distribution by ICONIQ B to its partners, representing each such partner's pro rata interest in such ICONIQ B Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F2 · price: ICONIQ Strategic Partners-B, L.P. ("ICONIQ B") distributed on September 6, 2017, for no consideration, 333,026 shares of Common Stock of the Issuer (the "ICONIQ B Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ B, representing each such partner's pro rata interest in such ICONIQ B Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ B Shares it received in the distribution by ICONIQ B to its partners, representing each such partner's pro rata interest in such ICONIQ B Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F6 · ownership.direct: ICONIQ B is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. Divesh Makan ("Makan") is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: Each of ICONIQ GP, ICONIQ Parent GP and Makan disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021644 · doc4.xml · nonDerivative · entry 1

ICONIQ Strategic Partners, L.P. · CIK 0001575779 · 10% owner

ICONIQ Strategic Partners-B, L.P. · CIK 0001584545 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., BL Series · CIK 0001585870 · 10% owner

ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 · CIK 0001623300 · 10% owner

ICONIQ Strategic Partners GP, L.P. · CIK 0001688390 · 10% owner

ICONIQ Strategic Partners TT GP, Ltd. · CIK 0001688389 · 10% owner

Makan Divesh · CIK 0001688143 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,040,104

F1 · kind: ICONIQ Strategic Partners, L.P. ("ICONIQ") distributed on September 6, 2017, for no consideration, 1,326,904 shares of Common Stock of the Issuer (the "ICONIQ Shares") to its limited partners and to Iconiq Strategic Partners GP, L.P. ("ICONIQ GP"), the general partner of ICONIQ, representing each such partner's pro rata interest in such ICONIQ Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ Shares it received in the distribution by ICONIQ to its partners, representing each such partner's pro rata interest in such ICONIQ Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F1 · price: ICONIQ Strategic Partners, L.P. ("ICONIQ") distributed on September 6, 2017, for no consideration, 1,326,904 shares of Common Stock of the Issuer (the "ICONIQ Shares") to its limited partners and to Iconiq Strategic Partners GP, L.P. ("ICONIQ GP"), the general partner of ICONIQ, representing each such partner's pro rata interest in such ICONIQ Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ Shares it received in the distribution by ICONIQ to its partners, representing each such partner's pro rata interest in such ICONIQ Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F5 · ownership.direct: ICONIQ is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. Divesh Makan ("Makan") is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: Each of ICONIQ GP, ICONIQ Parent GP and Makan disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021702 · doc4a.xml · nonDerivative · entry 4

Griffith William J.G. · CIK 0001688124 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 228,432

F4 · kind: ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 ("ICONIQ BL2") distributed on September 6, 2017, for no consideration, 60,139 shares of Common Stock of the Issuer (the "ICONIQ BL2 Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL2, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL2 Shares it received in the distribution by ICONIQ BL2 to its partners, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F4 · price: ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 ("ICONIQ BL2") distributed on September 6, 2017, for no consideration, 60,139 shares of Common Stock of the Issuer (the "ICONIQ BL2 Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL2, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL2 Shares it received in the distribution by ICONIQ BL2 to its partners, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F8 · ownership.direct: ICONIQ BL2 is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

F9 · ownership.nature: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021702 · doc4a.xml · nonDerivative · entry 3

Griffith William J.G. · CIK 0001688124 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,583,194

F3 · kind: ICONIQ Strategic Partners Co-Invest, L.P., BL Series ("ICONIQ BL") distributed on September 6, 2017, for no consideration, 416,806 shares of Common Stock of the Issuer (the "ICONIQ BL Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL, representing each such partner's pro rata interest in such ICONIQ BL Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL Shares it received in the distribution by ICONIQ BL to its partners, representing each such partner's pro rata interest in such ICONIQ BL Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F3 · price: ICONIQ Strategic Partners Co-Invest, L.P., BL Series ("ICONIQ BL") distributed on September 6, 2017, for no consideration, 416,806 shares of Common Stock of the Issuer (the "ICONIQ BL Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL, representing each such partner's pro rata interest in such ICONIQ BL Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL Shares it received in the distribution by ICONIQ BL to its partners, representing each such partner's pro rata interest in such ICONIQ BL Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F7 · ownership.direct: ICONIQ BL is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

F9 · ownership.nature: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021702 · doc4a.xml · nonDerivative · entry 2

Griffith William J.G. · CIK 0001688124 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,264,965

F2 · kind: ICONIQ Strategic Partners-B, L.P. ("ICONIQ B") distributed on September 6, 2017, for no consideration, 333,026 shares of Common Stock of the Issuer (the "ICONIQ B Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ B, representing each such partner's pro rata interest in such ICONIQ B Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ B Shares it received in the distribution by ICONIQ B to its partners, representing each such partner's pro rata interest in such ICONIQ B Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F2 · price: ICONIQ Strategic Partners-B, L.P. ("ICONIQ B") distributed on September 6, 2017, for no consideration, 333,026 shares of Common Stock of the Issuer (the "ICONIQ B Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ B, representing each such partner's pro rata interest in such ICONIQ B Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ B Shares it received in the distribution by ICONIQ B to its partners, representing each such partner's pro rata interest in such ICONIQ B Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F6 · ownership.direct: ICONIQ B is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

F9 · ownership.nature: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021702 · doc4a.xml · nonDerivative · entry 1

Griffith William J.G. · CIK 0001688124 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 5,040,104

F1 · kind: ICONIQ Strategic Partners, L.P. ("ICONIQ") distributed on September 6, 2017, for no consideration, 1,326,904 shares of Common Stock of the Issuer (the "ICONIQ Shares") to its limited partners and to Iconiq Strategic Partners GP, L.P. ("ICONIQ GP"), the general partner of ICONIQ, representing each such partner's pro rata interest in such ICONIQ Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ Shares it received in the distribution by ICONIQ to its partners, representing each such partner's pro rata interest in such ICONIQ Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F1 · price: ICONIQ Strategic Partners, L.P. ("ICONIQ") distributed on September 6, 2017, for no consideration, 1,326,904 shares of Common Stock of the Issuer (the "ICONIQ Shares") to its limited partners and to Iconiq Strategic Partners GP, L.P. ("ICONIQ GP"), the general partner of ICONIQ, representing each such partner's pro rata interest in such ICONIQ Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ Shares it received in the distribution by ICONIQ to its partners, representing each such partner's pro rata interest in such ICONIQ Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F5 · ownership.direct: ICONIQ is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

F9 · ownership.nature: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021642 · doc4.xml · nonDerivative · entry 4

Griffith William J.G. · CIK 0001688124 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 228,432

F4 · kind: ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 ("ICONIQ BL2") distributed on September 6, 2017, for no consideration, 60,139 shares of Common Stock of the Issuer (the "ICONIQ BL2 Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL2, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL2 Shares it received in the distribution by ICONIQ BL2 to its partners, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F4 · price: ICONIQ Strategic Partners Co-Invest, L.P., Series BL2 ("ICONIQ BL2") distributed on September 6, 2017, for no consideration, 60,139 shares of Common Stock of the Issuer (the "ICONIQ BL2 Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL2, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL2 Shares it received in the distribution by ICONIQ BL2 to its partners, representing each such partner's pro rata interest in such ICONIQ BL2 Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F8 · ownership.direct: ICONIQ BL2 is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

F9 · ownership.nature: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021642 · doc4.xml · nonDerivative · entry 3

Griffith William J.G. · CIK 0001688124 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,583,194

F3 · kind: ICONIQ Strategic Partners Co-Invest, L.P., BL Series ("ICONIQ BL") distributed on September 6, 2017, for no consideration, 416,806 shares of Common Stock of the Issuer (the "ICONIQ BL Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL, representing each such partner's pro rata interest in such ICONIQ BL Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL Shares it received in the distribution by ICONIQ BL to its partners, representing each such partner's pro rata interest in such ICONIQ BL Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F3 · price: ICONIQ Strategic Partners Co-Invest, L.P., BL Series ("ICONIQ BL") distributed on September 6, 2017, for no consideration, 416,806 shares of Common Stock of the Issuer (the "ICONIQ BL Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ BL, representing each such partner's pro rata interest in such ICONIQ BL Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ BL Shares it received in the distribution by ICONIQ BL to its partners, representing each such partner's pro rata interest in such ICONIQ BL Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F7 · ownership.direct: ICONIQ BL is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

F9 · ownership.nature: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021642 · doc4.xml · nonDerivative · entry 2

Griffith William J.G. · CIK 0001688124 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,264,965

F2 · kind: ICONIQ Strategic Partners-B, L.P. ("ICONIQ B") distributed on September 6, 2017, for no consideration, 333,026 shares of Common Stock of the Issuer (the "ICONIQ B Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ B, representing each such partner's pro rata interest in such ICONIQ B Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ B Shares it received in the distribution by ICONIQ B to its partners, representing each such partner's pro rata interest in such ICONIQ B Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F2 · price: ICONIQ Strategic Partners-B, L.P. ("ICONIQ B") distributed on September 6, 2017, for no consideration, 333,026 shares of Common Stock of the Issuer (the "ICONIQ B Shares") to its limited partners and to ICONIQ GP, the general partner of ICONIQ B, representing each such partner's pro rata interest in such ICONIQ B Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ B Shares it received in the distribution by ICONIQ B to its partners, representing each such partner's pro rata interest in such ICONIQ B Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F6 · ownership.direct: ICONIQ B is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

F9 · ownership.nature: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0000899243-17-021642 · doc4.xml · nonDerivative · entry 1

Griffith William J.G. · CIK 0001688124 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 5,040,104

F1 · kind: ICONIQ Strategic Partners, L.P. ("ICONIQ") distributed on September 6, 2017, for no consideration, 1,326,904 shares of Common Stock of the Issuer (the "ICONIQ Shares") to its limited partners and to Iconiq Strategic Partners GP, L.P. ("ICONIQ GP"), the general partner of ICONIQ, representing each such partner's pro rata interest in such ICONIQ Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ Shares it received in the distribution by ICONIQ to its partners, representing each such partner's pro rata interest in such ICONIQ Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F1 · price: ICONIQ Strategic Partners, L.P. ("ICONIQ") distributed on September 6, 2017, for no consideration, 1,326,904 shares of Common Stock of the Issuer (the "ICONIQ Shares") to its limited partners and to Iconiq Strategic Partners GP, L.P. ("ICONIQ GP"), the general partner of ICONIQ, representing each such partner's pro rata interest in such ICONIQ Shares. On the same date, ICONIQ GP distributed, for no consideration, the ICONIQ Shares it received in the distribution by ICONIQ to its partners, representing each such partner's pro rata interest in such ICONIQ Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F5 · ownership.direct: ICONIQ is the direct owner of these securities.

F9 · ownership.direct: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.direct: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

F9 · ownership.nature: ICONIQ GP is the sole general partner of each of ICONIQ, ICONIQ B, ICONIQ BL and ICONIQ BL2 (collectively, the "Funds"). ICONIQ Strategic Partners TT GP, Ltd. (the "ICONIQ Parent GP") is the sole general partner of ICONIQ GP. The Reporting Person is an equity holder and director of ICONIQ Parent GP.

F10 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0001209191-17-051432 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,297,071

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $30.22 to $30.69 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: 0001209191-17-050794 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,307,696

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

SEC source: 0001209191-17-050616 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,309,821

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $29.01 to $29.65 per share. Upon request by the Commission staff, the Issuer or a security holder of the Issuer, the Reporting Person will provide full information

SEC source: 0001209191-17-050466 · doc4.xml · derivative · entry 5

Unterman Thomas · CIK 0001299455 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 25,000 shares

Expires 2024-03-02

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_date: The shares subject to the option vest in 4 equal, annual installments beginning on the one year anniversary of March 3, 2014.

SEC source: 0001209191-17-050466 · doc4.xml · nonDerivative · entry 3

Unterman Thomas · CIK 0001299455 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,719

F1 · shares: The reported shares were withheld to cover the Reporting Person's tax liability in connection with the exercise of stock options.

SEC source: 0001209191-17-050466 · doc4.xml · nonDerivative · entry 2

Unterman Thomas · CIK 0001299455 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,000

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.

SEC source: 0001209191-17-050186 · doc4.xml · nonDerivative · entry 1

Tucker Therese · CIK 0001688365 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,424,945

F1 · price: The sale price represents the weighted average price of the shares sold ranging from $29.00 to $29.27 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.

F2 · balance_after: Totals reflect scheduled distributions of common stock to Ms. Tucker from the Safety Net GRAT dated 9/28/2015 and the CS 2015 GRAT dated 9/28/2015.

SEC source: 0001209191-17-050466 · doc4.xml · nonDerivative · entry 1

Unterman Thomas · CIK 0001299455 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,000

SEC source: 0001209191-17-049745 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,318,321

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $29.07 to $29.65 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: 0001209191-17-048733 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,326,821

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · shares: The sale price represents the weighted average price of the shares sold ranging from $29.74 to $30.01 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: 0001209191-17-047857 · doc4.xml · nonDerivative · entry 3

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,337,446

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F4 · price: The sale price represents the weighted average price of the shares sold ranging from $32.02 to $32.19 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: 0001209191-17-047857 · doc4.xml · nonDerivative · entry 2

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,337,646

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F3 · price: The sale price represents the weighted average price of the shares sold ranging from $31.00 to $31.98 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: 0001209191-17-047857 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,338,746

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $30.00 to $30.75 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: 0001209191-17-046873 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,348,071

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $38.71 to $39.20 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: 0001209191-17-046858 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,360,821

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

SEC source: 0001209191-17-046093 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,365,071

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $37.09 to $37.75 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: 0001209191-17-045467 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,377,821

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $36.83 to $37.43 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: 0001209191-17-044510 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,390,571

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · shares: The sale price represents the weighted average price of the shares sold ranging from $36.09 to $36.47 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: 0001209191-17-042825 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,403,121

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $35.21 to $36.13 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: 0001209191-17-042987 · doc4a.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,403,321

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $35.21 to $36.13 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: 0001209191-17-040644 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,416,071

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $35.00 to $35.57 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: 0001209191-17-039379 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,421,071

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $32.84 to $33.26 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: 0001209191-17-037929 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,446,071

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $34.48 to $34.65 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: 0001209191-17-037394 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,471,071

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

SEC source: 0000899243-17-015169 · doc4.xml · nonDerivative · entry 2

SLTA Sumeru (GP), L.L.C. · CIK 0001463527 · 10% owner

Silver Lake Group, L.L.C. · CIK 0001418226 · 10% owner

SHAH AJAY · CIK 0001008036 · 10% owner

Silver Lake Technology Associates Sumeru, L.P. · CIK 0001463521 · 10% owner

Silver Lake Sumeru Fund LP · CIK 0001410377 · 10% owner

Silver Lake Technology Investors Sumeru, L.P. · CIK 0001463520 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Held through Silver Lake Technology Investors Sumeru, L.P.

Disclosed balance after: 134,478

F1 · shares: Represents shares of BlackLine, Inc.'s (the "Issuer") Common Stock sold in an underwritten secondary offering.

F2 · price: Represents the sale price to the underwriters in the secondary offering of $31.4325 per share.

F4 · ownership.nature: SLG and Shah are the managing members of SLTA, which is the general partner of SLT LP, which is the general partner of Silver Lake Technology Investors Sumeru, L.P. ("SLTI", and collectively with SLG, Shah, SLTA, SLT LP and SLSF, the "Reporting Persons"), which directly holds these shares of Common Stock.

F5 · ownership.nature: As the general partner of each of SLSF and SLTI, SLT LP may be deemed to share voting and dispositive power with respect to the Common Stock directly held by SLSF and SLTI (the "Silver Lake Sumeru Shares"). As the general partner of SLT LP, SLTA may be deemed to share voting and dispositive power with respect to the Silver Lake Sumeru Shares. As the managing members of SLTA, SLG and Shah may each be deemed to share voting and dispositive power with respect to the Silver Lake Sumeru Shares.

F6 · ownership.nature: Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

F7 · ownership.nature: Pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), this filing shall not be deemed an admission that the Reporting Persons are, for purposes of Section 16 of the Exchange Act or otherwise, the beneficial owners of any equity securities in excess of their respective pecuniary interests.

SEC source: 0000899243-17-015169 · doc4.xml · nonDerivative · entry 1

SLTA Sumeru (GP), L.L.C. · CIK 0001463527 · 10% owner

Silver Lake Group, L.L.C. · CIK 0001418226 · 10% owner

SHAH AJAY · CIK 0001008036 · 10% owner

Silver Lake Technology Associates Sumeru, L.P. · CIK 0001463521 · 10% owner

Silver Lake Sumeru Fund LP · CIK 0001410377 · 10% owner

Silver Lake Technology Investors Sumeru, L.P. · CIK 0001463520 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Held through Silver Lake Sumeru Fund, L.P.

Disclosed balance after: 15,059,093

F1 · shares: Represents shares of BlackLine, Inc.'s (the "Issuer") Common Stock sold in an underwritten secondary offering.

F2 · price: Represents the sale price to the underwriters in the secondary offering of $31.4325 per share.

F3 · ownership.nature: Silver Lake Group, L.L.C. ("SLG") and Ajay Shah ("Shah") are the managing members of SLTA Sumeru (GP), L.L.C. ("SLTA"), which is the general partner of Silver Lake Technology Associates Sumeru, L.P. ("SLT LP"), which is the general partner of Silver Lake Sumeru Fund, L.P. ("SLSF"), which directly holds these shares of Common Stock.

F5 · ownership.nature: As the general partner of each of SLSF and SLTI, SLT LP may be deemed to share voting and dispositive power with respect to the Common Stock directly held by SLSF and SLTI (the "Silver Lake Sumeru Shares"). As the general partner of SLT LP, SLTA may be deemed to share voting and dispositive power with respect to the Silver Lake Sumeru Shares. As the managing members of SLTA, SLG and Shah may each be deemed to share voting and dispositive power with respect to the Silver Lake Sumeru Shares.

F6 · ownership.nature: Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

F7 · ownership.nature: Pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), this filing shall not be deemed an admission that the Reporting Persons are, for purposes of Section 16 of the Exchange Act or otherwise, the beneficial owners of any equity securities in excess of their respective pecuniary interests.

SEC source: 0001209191-17-036583 · doc4.xml · nonDerivative · entry 2

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,476,071

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F3 · price: The sale price represents the weighted average price of the shares sold ranging from $34.50 to $34.81 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: 0001209191-17-036583 · doc4.xml · nonDerivative · entry 1

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,476,871

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F2 · price: The sale price represents the weighted average price of the shares sold ranging from $33.49 to $34.35 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: 0001209191-17-034663 · doc4.xml · nonDerivative · entry 2

Spanicciati Mario · CIK 0001688128 · Director · Chief Marketing Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spanicciati Family 2013 Irrevocable Trust

Disclosed balance after: 3,501,071

F1 · kind: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adapted by the Reporting Person on March 14, 2017.

F3 · price: The sale price represents the weighted average price of the shares sold ranging from $32.92 to $33.00 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.