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

Name of Reporting Person

I.R.S. Identification No. of Above Person (Entities Only)

David C. Paul

Check the Appropriate Box if a Member of a Group

Not Applicable

(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

111,459⁽¹⁾

Shared Voting Power

20,867,524⁽²⁾⁽³⁾

Sole Dispositive Power

111,459 ⁽¹⁾

Shared Dispositive Power

20,867,524 ⁽²⁾⁽³⁾

Aggregate Amount Beneficially Owned by Each Reporting Person

20,978,983 ⁽²⁾⁽³⁾

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

Not Applicable

Percent of Class Represented by Amount in Row (9)

21.6%⁽⁴⁾⁽⁵⁾

Type of Reporting Person

IN

Consists of 111,459 shares of Class A common stock subject to options held by the reporting person that are exercisable within 60 days of December 31, 2018.

The holders of Class B common stock are entitled to 10 votes per share of Class B common stock. Each share of Class B common stock is convertible into the Issuer’s Class A common stock on a 1-for-1 basis (a) at any time at the option of the holder of such share, (b) upon the transfer of such share (subject to certain exceptions for transfers not involving a sale, such as transfers not constituting a change in beneficial ownership, estate planning transfers and gifts), and (c) if the Class B common stock held by the holder of such share plus that holder’s affiliates represents less than 5% of the Issuer’s outstanding common stock.

Does not include 1,562,573 shares of Class B common stock held by the Paul Family Irrevocable Trust U/A/D 4/6/10. The reporting person’s spouse is trustee of the trust.

Based on shares outstanding equal to: (a) 76,143,257 shares of Class A common stock outstanding as of December 31, 2018, as reported by the Issuer to the reporting person, plus (b) 111,459 shares of Class A common stock subject to options that are exercisable within 60 days of December 31, 2018, plus (c) 20,867,524 shares of Class B common stock, which are treated as converted into Class A common stock for the purpose of computing the percentage ownership of the reporting person.

Assumes conversion of all of the reporting person’s Class B common stock into, and exercise of all of the reporting person’s options for, shares of Class A common stock.

Name of Reporting Person

I.R.S. Identification No. of Above Person (Entities Only)

Sonali Paul

Check the Appropriate Box if a Member of a Group

Not Applicable

(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

1,562,573⁽⁶⁾⁽⁷⁾

Shared Voting Power

20,867,524⁽⁷⁾⁽⁸⁾

Sole Dispositive Power

1,562,573⁽⁶⁾⁽⁷⁾

Shared Dispositive Power

20,867,524 ⁽⁷⁾⁽⁸⁾

Aggregate Amount Beneficially Owned by Each Reporting Person

22,430,097 ⁽⁷⁾⁽⁸⁾

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

Not Applicable

Percent of Class Represented by Amount in Row (9)

22.8%^(9)(10)

Type of Reporting Person

IN

Consists of 1,562,573 shares of Class B common stock held by the Paul Family Irrevocable Trust U/A/D 4/6/10.

The holders of Class B common stock are entitled to 10 votes per share of Class B common stock. Each share of Class B common stock is convertible into the Issuer’s Class A common stock on a 1-for-1 basis (a) at any time at the option of the holder of such share, (b) upon the transfer of such share (subject to certain exceptions for transfers not involving a sale, such as transfers not constituting a change in beneficial ownership, estate planning transfers and gifts), and (c) if the Class B common stock held by the holder of such share plus that holder’s affiliates represents less than 5% of the Issuer’s outstanding common stock.

Does not include 111,459 shares of Class A common stock subject to options held by the reporting person’s spouse that are exercisable within 60 days of December 31, 2018.

Based on shares outstanding equal to: (a) 76,143,257 shares of Class A common stock outstanding as of December 31, 2018, as reported by the Issuer to the reporting person, plus (b) 22,430,097 shares of Class B common stock, which are treated as converted into Class A common stock for the purpose of computing the percentage ownership of the reporting person.

Assumes conversion of all of the reporting person’s Class B common stock into shares of Class A common stock.

2560 General Armistead

Avenue Audubon, PA 19403

2560 General Armistead

Avenue Audubon, PA 19403

(a)

(b)

(c)

Includes 111,459 shares of Class A common stock subject to options held by the reporting person that are exercisable within 60 days of December 31, 2018.

The holders of Class B common stock are entitled to 10 votes per share of Class B common stock. Each share of Class B common stock is convertible into the Issuer’s Class A common stock on a 1-for-1 basis (a) at any time at the option of the holder of such share, (b) upon the transfer of such share (subject to certain exceptions for transfers not involving a sale, such as transfers not constituting a change in beneficial ownership, estate planning transfers and gifts), and (c) if the Class B common stock held by the holder of such share plus that holder’s affiliates represents less than 5% of the Issuers outstanding common stock.

Does not include 1,562,573 shares of Class B common stock held by the Paul Family Irrevocable Trust U/A/D 4/6/10. The shares are held in trust for the benefit of the reporting person’s spouse and children. The reporting person’s spouse is trustee of the trust.

Includes 20,867,524 shares of Class B common stock held directly by the reporting person and the reporting person’s spouse.

Includes 1,562,573 shares of Class B common stock held by the Paul Family Irrevocable Trust U/A/D 4/6/10.

Does not include 111,459 shares of Class A common stock subject to options held by the reporting person’s spouse that are exercisable within 60 days of December 31, 2018.

Based on shares outstanding equal to: (a) 76,143,257 shares of Class A common stock outstanding as of December 31, 2018, as reported by the Issuer to the reporting person, plus (b) 111,459 shares of Class A common stock subject to options that are exercisable within 60 days of December 31, 2018, plus (c) 20,867,524 shares of Class B common stock, which are treated as converted into Class A common stock for the purpose of computing the percentage ownership of the reporting person.

Assumes conversion of all of the reporting person’s Class B common stock into, and exercise of all of the reporting person’s options for, shares of Class A common stock.

Based on shares outstanding equal to: (a) 76,143,257 shares of Class A common stock outstanding as of December 31, 2018, as reported by the Issuer to the reporting person, plus (b) 22,430,097 of shares of Class B common stock, which are treated as converted into Class A common stock for the purpose of computing the percentage ownership of the reporting person.

Assumes conversion of all of the reporting person’s Class B common stock into shares of Class A common stock.

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Not Applicable

Not Applicable