The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

Names of Reporting Persons.

Richard Lee Stollmeyer

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

1,682,963(1)(2)

Shared Voting Power

125,607(2)(3)

Sole Dispositive Power

1,682,963(2)(4)

Shared Dispositive Power

11,400(2)(5)

Aggregate Amount Beneficially Owned by Each Reporting Person

1,808,570(2)(6)

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

Percent of Class Represented by Amount in Row (9)

3.83% (2)(7)

Type of Reporting Person (See Instructions)

IN

Consists of (i) 505,905 shares of Class B Common Stock held of record by Mr. Stollmeyer; (ii) 23,346 shares of Class A Common Stock held of record by Mr. Stollmeyer; (iii) options to purchase 961,519 shares of Class B Common Stock which are exercisable within 60 days of December 31, 2018; (iv) options to purchase 157,001 shares of Class A Common Stock which are exercisable within 60 days of December 31, 2018; and (v) 35,192 restricted stock units that vest and settle into shares of Class A Common Stock within 60 days of December 31, 2018.

Each share of Class B Common Stock is convertible at any time into one share of Class A Common Stock at the option of the holder and has no expiration date. Each share of Class B Common Stock is entitled to ten 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.

Consists of (i) 10,150 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse; (ii) 1,250 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse as custodian for the benefit of her minor child; (iii) 49,079 shares of Class A Common Stock held pursuant to the Stockholder Proxy (defined below); and (iv) 65,128 shares of Class B Common Stock held pursuant to the Stockholder Proxy. Mr. Stollmeyer holds an irrevocable proxy (the “Stockholder Proxy”) to vote an aggregate of 49,079 shares of Class A Common Stock and 65,128 shares of Class B Common Stock held of record by certain of the Issuer’s stockholders.

Consists of (i) 505,905 shares of Class B Common Stock held of record by Mr. Stollmeyer; (ii) 23,346 shares of Class A Common Stock held of record by Mr. Stollmeyer; (iii) options to purchase 961,519 shares of Class B Common Stock which are exercisable within 60 days of December 31, 2018; (iv) options to purchase 157,001 shares of Class A Common Stock which are exercisable within 60 days of December 31, 2018; and (v) 35,192 restricted stock units that vest and settle into shares of Class A Common Stock within 60 days of December 31, 2018.

Consists of (i) 10,150 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse and (ii) 1,250 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse as custodian for the benefit of her minor child.

Consists of (i) 505,905 shares of Class B Common Stock held of record by Mr. Stollmeyer; (ii) 23,346 shares of Class A Common Stock held of record by Mr. Stollmeyer; (iii) 10,150 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse; (iv) 1,250 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse as custodian for the benefit of her minor child; (v) options to purchase 961,519 shares of Class B Common Stock which are exercisable within 60 days of December 31, 2018; (vi) options to purchase 157,001 shares of Class A Common Stock which are exercisable within 60 days of December 31, 2018; (vii) 35,192 restricted stock units that vest and settle into shares of Class A Common Stock within 60 days of December 31, 2018; (viii) 49,079 shares of Class A Common Stock held pursuant to the Stockholder Proxy; and (ix) 65,128 shares of Class B Common Stock held pursuant to the Stockholder Proxy.

Assumes conversion of all of the Reporting Person’s Class B Common Stock into Class A Common Stock. Based on 45,535,268 shares of Class A Common Stock outstanding as of December 31, 2018, as reported by the Issuer to the Reporting Person.

If this statement is filed pursuant to SS.240.13d-1(b), or 240.13d-2(b) or (c), check whether the person filing is a:

Ownership.

Amount beneficially owned:1,808,570(2)(6)

Percent of class: 3.83%(2)(7)

Number of shares as to which such person has:

Sole power to vote or to direct the vote    1,682,963(1)(2)

Shared power to vote or to direct the vote    125,607(2)(3)

Sole power to dispose or to direct the disposition of    1,682,963(2)(4)

Shared power to dispose or to direct the disposition of    11,400(2)(5)

Consists of (i) 505,905 shares of Class B Common Stock held of record by Mr. Stollmeyer; (ii) 23,346 shares of Class A Common Stock held of record by Mr. Stollmeyer; (iii) options to purchase 961,519 shares of Class B Common Stock which are exercisable within 60 days of December 31, 2018; (iv) options to purchase 157,001 shares of Class A Common Stock which are exercisable within 60 days of December 31, 2018; and (v) 35,192 restricted stock units that vest and settle into shares of Class A Common Stock within 60 days of December 31, 2018.

Each share of Class B Common Stock is convertible at any time into one share of Class A Common Stock at the option of the holder and has no expiration date. Each share of Class B Common Stock is entitled to ten 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.

Consists of (i) 10,150 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse; (ii) 1,250 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse as custodian for the benefit of her minor child; (iii) 49,079 shares of Class A Common Stock held pursuant to the Stockholder Proxy (defined below); and (iv) 65,128 shares of Class B Common Stock held pursuant to the Stockholder Proxy. Mr. Stollmeyer holds an irrevocable proxy (the “Stockholder Proxy”) to vote an aggregate of 49,079 shares of Class A Common Stock and 65,128 shares of Class B Common Stock held of record by certain of the Issuer’s stockholders.

Consists of (i) 505,905 shares of Class B Common Stock held of record by Mr. Stollmeyer; (ii) 23,346 shares of Class A Common Stock held of record by Mr. Stollmeyer; (iii) options to purchase 961,519 shares of Class B Common Stock which are exercisable within 60 days of December 31, 2018; (iv) options to purchase 157,001 shares of Class A Common Stock which are exercisable within 60 days of December 31, 2018; and (v) 35,192 restricted stock units that vest and settle into shares of Class A Common Stock within 60 days of December 31, 2018.

Consists of (i) 10,150 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse and (ii) 1,250 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse as custodian for the benefit of her minor child.

Consists of (i) 505,905 shares of Class B Common Stock held of record by Mr. Stollmeyer; (ii) 23,346 shares of Class A Common Stock held of record by Mr. Stollmeyer; (iii) 10,150 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse; (iv) 1,250 shares of Class B Common Stock held of record by Mr. Stollmeyer’s spouse as custodian for the benefit of her minor child; (v) options to purchase 961,519 shares of Class B Common Stock which are exercisable within 60 days of December 31, 2018; (vi) options to purchase 157,001 shares of Class A Common Stock which are exercisable within 60 days of December 31, 2018; (vii) 35,192 restricted stock units that vest and settle into shares of Class A Common Stock within 60 days of December 31, 2018; (viii) 49,079 shares of Class A Common Stock held pursuant to the Stockholder Proxy; and (ix) 65,128 shares of Class B Common Stock held pursuant to the Stockholder Proxy.

Assumes conversion of all of the Reporting Person’s Class B Common Stock into Class A Common Stock. Based on 45,535,268 shares of Class A Common Stock outstanding as of December 31, 2018, as reported by the Issuer to the Reporting Person.

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.

Certifications.

/s/ Richard Lee Stollmeyer