ABNB Airbnb Inc

  Names of reporting persons

  Greylock XIII Limited Partnership

  Check the appropriate box if a member of a group (see instructions)

  (a)  ☐        (b)  ☒

  SEC use only

  Citizenship or place of organization

  Delaware

Number of

shares

 beneficially 

owned by

each

reporting

person

with:

  Sole voting power

  0

  Shared voting power

  20,662,872 (1)(2)

  Sole dispositive power

  0

  Shared dispositive power

  20,662,872 (1)(2)

  Aggregate amount beneficially owned by each reporting person

  20,662,872 (1)(2)

  Check if the aggregate amount in Row (9) excludes certain shares (see instructions)    ☐

  Percent of class represented by amount in Row (9)

  16.62% (2)(3)(4)

  Type of reporting person (see instructions)

  PN

Represents 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership.

Each share of Class B Common Stock is convertible at any time at the option of the holder into one share of Class A Common Stock and has no expiration date. In addition, each share of Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain transfers to “Permitted Transferees” as defined in the issuer’s amended and restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing at least 80% of the outstanding shares of Class B Common Stock, or (iii) December 14, 2040. Each share of Class B Common Stock is entitled to 20 votes per share, whereas each share of Class A Common Stock is entitled to one vote per share. The rights of the holders of Class A Common Stock and Class B Common Stock are identical, except with respect to the aforementioned conversion rights and voting rights.

The percent of class was calculated based on 103,682,548 shares of Class A Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

Based on the aggregate number of shares of Class B Common Stock beneficially owned by the reporting person, which pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, is treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 20,662,872 shares of Class B Common Stock held by Greylock XIII Limited Partnership represents 4.18% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock, based on (i) 103,682,548 shares of Class A Common Stock and (ii) 489,565,703 shares of Class B Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

  Names of reporting persons

  Greylock XIII-A Limited Partnership

  Check the appropriate box if a member of a group (see instructions)

  (a)  ☐        (b)  ☒

  SEC use only

  Citizenship or place of organization

  Delaware

Number of

shares

 beneficially 

owned by

each

reporting

person

with:

  Sole voting power

  0

  Shared voting power

  1,860,264 (1)(2)

  Sole dispositive power

  0

  Shared dispositive power

  1,860,264 (1)(2)

  Aggregate amount beneficially owned by each reporting person

  1,860,264 (1)(2)

  Check if the aggregate amount in Row (9) excludes certain shares (see instructions)    ☐

  Percent of class represented by amount in Row (9)

  1.76% (2)(3)(4)

  Type of reporting person (see instructions)

  PN

Represents 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership.

Each share of Class B Common Stock is convertible at any time at the option of the holder into one share of Class A Common Stock and has no expiration date. In addition, each share of Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain transfers to “Permitted Transferees” as defined in the issuer’s amended and restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing at least 80% of the outstanding shares of Class B Common Stock, or (iii) December 14, 2040. Each share of Class B Common Stock is entitled to 20 votes per share, whereas each share of Class A Common Stock is entitled to one vote per share. The rights of the holders of Class A Common Stock and Class B Common Stock are identical, except with respect to the aforementioned conversion rights and voting rights.

The percent of class was calculated based on 103,682,548 shares of Class A Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

Based on the aggregate number of shares of Class B Common Stock beneficially owned by the reporting person, which pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, is treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 1,860,264 shares of Class B Common Stock held by Greylock XIII-A Limited Partnership represents 0.38% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock, based on (i) 103,682,548 shares of Class A Common Stock and (ii) 489,565,703 shares of Class B Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

  Names of reporting persons

  Greylock XIII GP LLC

  Check the appropriate box if a member of a group (see instructions)

  (a)  ☐        (b)  ☒

  SEC use only

  Citizenship or place of organization

  Delaware

Number of

shares

 beneficially 

owned by

each

reporting

person

with:

  Sole voting power

  0

  Shared voting power

  22,523,136 (1)(2)

  Sole dispositive power

  0

  Shared dispositive power

  22,523,136 (1)(2)

  Aggregate amount beneficially owned by each reporting person

  22,523,136 (1)(2)

  Check if the aggregate amount in Row (9) excludes certain shares (see instructions)    ☐

  Percent of class represented by amount in Row (9)

  17.85% (2)(3)(4)

  Type of reporting person (see instructions)

  PN

Represents 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership. Greylock XIII GP LLC is the general partner of Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership, and may be deemed to beneficially own the shares of stock held directly by Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership.

Each share of Class B Common Stock is convertible at any time at the option of the holder into one share of Class A Common Stock and has no expiration date. In addition, each share of Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain transfers to “Permitted Transferees” as defined in the issuer’s amended and restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing at least 80% of the outstanding shares of Class B Common Stock, or (iii) December 14, 2040. Each share of Class B Common Stock is entitled to 20 votes per share, whereas each share of Class A Common Stock is entitled to one vote per share. The rights of the holders of Class A Common Stock and Class B Common Stock are identical, except with respect to the aforementioned conversion rights and voting rights.

The percent of class was calculated based on 103,682,548 shares of Class A Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

Based on the aggregate number of shares of Class B Common Stock beneficially owned by the reporting person, which pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, is treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 22,523,136 shares of Class B Common Stock held by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held by Greylock XIII-A Limited Partnership represents 4.55% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock, based on (i) 103,682,548 shares of Class A Common Stock and (ii) 489,565,703 shares of Class B Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

  Names of reporting persons

  William W. Helman

  Check the appropriate box if a member of a group (see instructions)

  (a)  ☐        (b)  ☒

  SEC use only

  Citizenship or place of organization

  United States

Number of

shares

 beneficially 

owned by

each

reporting

person

with:

  Sole voting power

  0

  Shared voting power

  22,523,136 (1)(2)

  Sole dispositive power

  0

  Shared dispositive power

  22,523,136 (1)(2)

  Aggregate amount beneficially owned by each reporting person

  22,523,136 (1)(2)

  Check if the aggregate amount in Row (9) excludes certain shares (see instructions)    ☐

  Percent of class represented by amount in Row (9)

  17.85% (2)(3)(4)

  Type of reporting person (see instructions)

  IN

Represents 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership. Greylock XIII GP LLC is the general partner of Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership, and may be deemed to beneficially own the shares of stock held directly by Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership. Mr. Helman, as a managing member of Greylock XIII GP LLC, may be deemed to beneficially own the shares of stock held directly by Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership.

Each share of Class B Common Stock is convertible at any time at the option of the holder into one share of Class A Common Stock and has no expiration date. In addition, each share of Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain transfers to “Permitted Transferees” as defined in the issuer’s amended and restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing at least 80% of the outstanding shares of Class B Common Stock, or (iii) December 14, 2040. Each share of Class B Common Stock is entitled to 20 votes per share, whereas each share of Class A Common Stock is entitled to one vote per share. The rights of the holders of Class A Common Stock and Class B Common Stock are identical, except with respect to the aforementioned conversion rights and voting rights.

The percent of class was calculated based on 103,682,548 shares of Class A Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

Based on the aggregate number of shares of Class B Common Stock beneficially owned by the reporting person, which pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, is treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 22,523,136 shares of Class B Common Stock represents 4.55% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock, based on (i) 103,682,548 shares of Class A Common Stock and (ii) 489,565,703 shares of Class B Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

  Names of reporting persons

  Aneel Bhusri

  Check the appropriate box if a member of a group (see instructions)

  (a)  ☐        (b)  ☒

  SEC use only

  Citizenship or place of organization

  United States

Number of

shares

 beneficially 

owned by

each

reporting

person

with:

  Sole voting power

  0

  Shared voting power

  22,523,136 (1)(2)

  Sole dispositive power

  0

  Shared dispositive power

  22,523,136 (1)(2)

  Aggregate amount beneficially owned by each reporting person

  22,523,136 (1)(2)

  Check if the aggregate amount in Row (9) excludes certain shares (see instructions)    ☐

  Percent of class represented by amount in Row (9)

  17.85% (2)(3)(4)

  Type of reporting person (see instructions)

  IN

Represents 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership. Greylock XIII GP LLC is the general partner of Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership, and may be deemed to beneficially own the shares of stock held directly by Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership. Mr. Bhusri, as a managing member of Greylock XIII GP LLC may be deemed to beneficially own the shares of stock held directly by Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership.

Each share of Class B Common Stock is convertible at any time at the option of the holder into one share of Class A Common Stock. In addition, each share of Class B common stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain transfers to “Permitted Transferees” as defined in the issuer’s amended and restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing at least 80% of the outstanding shares of Class B Common Stock, and (iii) December 14, 2040. Each share of Class B Common Stock is entitled to 20 votes per share, whereas each share of Class A Common Stock is entitled to one vote per share. The rights of the holders of Class A Common Stock and Class B Common Stock are identical, except with respect to the aforementioned conversion rights and voting rights.

The percent of class was calculated based on 103,682,548 shares of Class A Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

Based on the aggregate number of shares of Class B Common Stock beneficially owned by the reporting person, which pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, is treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 22,523,136 shares of Class B Common Stock represents 4.55% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock, based on (i) 103,682,548 shares of Class A Common Stock and (ii) 489,565,703 shares of Class B Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

  Names of reporting persons

  Donald A. Sullivan

  Check the appropriate box if a member of a group (see instructions)

  (a)  ☐        (b)  ☒

  SEC use only

  Citizenship or place of organization

  United States

Number of

shares

 beneficially 

owned by

each

reporting

person

with:

  Sole voting power

  0

  Shared voting power

  22,523,136 (1)(2)

  Sole dispositive power

  0

  Shared dispositive power

  22,523,136 (1)(2)

  Aggregate amount beneficially owned by each reporting person

  22,523,136 (1)(2)

  Check if the aggregate amount in Row (9) excludes certain shares (see instructions)    ☐

  Percent of class represented by amount in Row (9)

  17.85% (2)(3)(4)

  Type of reporting person (see instructions)

  IN

Represents 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership. Greylock XIII GP LLC is the general partner of Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership, and may be deemed to beneficially own the shares of stock held directly by Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership. Mr. Sullivan, as a managing member of Greylock XIII GP LLC may be deemed to beneficially own the shares of stock held directly by Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership.

Each share of Class B Common Stock is convertible at any time at the option of the holder into one share of Class A Common Stock. In addition, each share of Class B common stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain transfers to “Permitted Transferees” as defined in the issuer’s amended and restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing at least 80% of the outstanding shares of Class B Common Stock, and (iii) December 14, 2040. Each share of Class B Common Stock is entitled to 20 votes per share, whereas each share of Class A Common Stock is entitled to one vote per share. The rights of the holders of Class A Common Stock and Class B Common Stock are identical, except with respect to the aforementioned conversion rights and voting rights.

The percent of class was calculated based on 103,682,548 shares of Class A Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

Based on the aggregate number of shares of Class B Common Stock beneficially owned by the reporting person, which pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, is treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 22,523,136 shares of Class B Common Stock represents 4.55% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock, based on (i) 103,682,548 shares of Class A Common Stock and (ii) 489,565,703 shares of Class B Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

  Names of reporting persons

  David Sze

  Check the appropriate box if a member of a group (see instructions)

  (a)  ☐        (b)  ☒

  SEC use only

  Citizenship or place of organization

  United States

Number of

shares

 beneficially 

owned by

each

reporting

person

with:

  Sole voting power

  0

  Shared voting power

  22,523,136 (1)(2)

  Sole dispositive power

  0

  Shared dispositive power

  22,523,136 (1)(2)

  Aggregate amount beneficially owned by each reporting person

  22,523,136 (1)(2)

  Check if the aggregate amount in Row (9) excludes certain shares (see instructions)    ☐

  Percent of class represented by amount in Row (9)

  17.85% (2)(3)(4)

  Type of reporting person (see instructions)

  IN

Represents 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership. Greylock XIII GP LLC is the general partner of Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership, and may be deemed to beneficially own the shares of stock held directly by Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership. Mr. Sze, as a managing member of Greylock XIII GP LLC may be deemed to beneficially own the shares of stock held directly by Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership.

Each share of Class B Common Stock is convertible at any time at the option of the holder into one share of Class A Common Stock. In addition, each share of Class B common stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain transfers to “Permitted Transferees” as defined in the issuer’s amended and restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing at least 80% of the outstanding shares of Class B Common Stock, and (iii) December 14, 2040. Each share of Class B Common Stock is entitled to 20 votes per share, whereas each share of Class A Common Stock is entitled to one vote per share. The rights of the holders of Class A Common Stock and Class B Common Stock are identical, except with respect to the aforementioned conversion rights and voting rights.

The percent of class was calculated based on 103,682,548 shares of Class A Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

Based on the aggregate number of shares of Class B Common Stock beneficially owned by the reporting person, which pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, is treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 22,523,136 shares of Class B Common Stock represents 4.55% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock, based on (i) 103,682,548 shares of Class A Common Stock and (ii) 489,565,703 shares of Class B Common Stock outstanding (as reported in the issuer’s prospectus filed pursuant to Rule 424(b)(4) with the SEC on December 11, 2020, which gives effect to the additional 5,000,000 shares of Class A Common Stock issued and sold by the issuer to the underwriters pursuant to the underwriters’ overallotment option).

Name of Issuer:

Address of Issuer’s Principal Executive Offices:

Name of Person Filing:

Address of Principal Business Office or, if None, Residence:

Citizenship:

Title of Class of Securities:

CUSIP Number:

Description of Person Filing:

Ownership:

Greylock XIII Limited Partnership directly owns 20,662,872 shares of Class B Common Stock, which, when such shares of Class B Common Stock are treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, represents approximately 16.62% of the outstanding shares of Class A Common Stock. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 20,662,872 shares of Class B Common Stock held by Greylock XIII Limited Partnership represents 4.18% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock.

Greylock XIII-A Limited Partnership directly owns 1,860,264 shares of Class B Common Stock which, when such shares of Class B Common Stock are treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, represents approximately 1.76% of the outstanding shares of Class A Common Stock. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 1,860,264 shares of Class B Common Stock held by Greylock XIII-A Limited Partnership represents 0.38% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock.

Greylock XIII GP LLC is the general partner of Greylock XIII Limited Partnership and Greylock XIII-A Limited Partnership, and may be deemed to beneficially own 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership which, when such shares of Class B Common Stock are treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, represents approximately 17.85% of the outstanding shares of Class A Common Stock. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership represents 4.55% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock.

Mr. Helman, as a managing member of Greylock XIII GP LLC may be deemed to beneficially own the 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership which, when such shares of Class B Common Stock are treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, represents approximately 17.85% of the outstanding shares of Class A Common Stock. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 20,662,872 shares of Class A Common Stock and 1,860,264 shares of Class B Common Stock represents 4.55% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock.

Mr. Bhusri, as a managing member of Greylock XIII GP LLC may be deemed to beneficially own the 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership which, when such shares of Class B Common Stock are treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, represents approximately 17.85% of the outstanding shares of Class A Common Stock. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 20,662,872 shares of Class A Common Stock and 1,860,264 shares of Class B Common Stock represents 4.55% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock.

Mr. Sullivan, as a managing member of Greylock XIII GP LLC may be deemed to beneficially own the 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership which, when such shares of Class B Common Stock are treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, represents approximately 17.85% of the outstanding shares of Class A Common Stock. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 20,662,872 shares of Class A Common Stock and 1,860,264 shares of Class B Common Stock represents 4.55% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock.

Mr. Sze, as a managing member of Greylock XIII GP LLC may be deemed to beneficially own the 20,662,872 shares of Class B Common Stock held directly by Greylock XIII Limited Partnership and 1,860,264 shares of Class B Common Stock held directly by Greylock XIII-A Limited Partnership which, when such shares of Class B Common Stock are treated as converted into Class A Common Stock only for purposes of computing the percentage ownership of the reporting person pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended, represents approximately 17.85% of the outstanding shares of Class A Common Stock. The percentage reported does not reflect the twenty for one voting power of the Class B Common Stock. The 20,662,872 shares of Class A Common Stock and 1,860,264 shares of Class B Common Stock represents 4.55% of the aggregate combined voting power of the Class A Common Stock and Class B Common Stock.

Greylock XIII Limited Partnership

Greylock XIII-A Limited Partnership

Greylock XIII GP LLC

William W. Helman

Aneel Bhusri

Donald A. Sullivan

David Sze

Sole power to vote or direct the vote

Shared power to vote or to direct the vote

Sole power to dispose or to direct the disposition of

Shared power to dispose or to direct the disposition of

Ownership of Five Percent or Less of a Class:

Ownership of More than Five Percent on Behalf of Another Person:

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person:

Identification and Classification of Members of the Group:

Notice of Dissolution of Group:

Certification: