UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

o

Rule 13d-1(c)

x

Rule 13d-1(d)

CUSIP No. 006855100

13G

1.

Name of Reporting Persons:
5-N Investments, LLC

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization:
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power:
1,447,778

6.

Shared Voting Power:
0

7.

Sole Dispositive Power:
1,447,778

8.

Shared Dispositive Power:
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person:
1,447,778

10.

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

11.

Percent of Class Represented by Amount in Row (9):
9.2%

12.

Type of Reporting Person (See Instructions):
OO

CUSIP No. 006855100

13G

1.

Name of Reporting Persons:
Jacob John Novak

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization:
United States

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power:
1,447,778

6.

Shared Voting Power:
0

7.

Sole Dispositive Power:
1,447,778

8.

Shared Dispositive Power:
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person:
1,447,778

10.

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

11.

Percent of Class Represented by Amount in Row (9):
9.2%

12.

Type of Reporting Person (See Instructions):
IN

Item 1.

(a).

Name of Issuer:
Adeptus Health Inc.  (the “Company”)

(b).

Address of Issuer’s Principal Executive Offices:
2941 Lake Vista, Lewisville, Texas 75067

Item 2(a).

Name of Person Filing:

Item 2(b).

Address of Principal Business Office:

Item 2(c).

Citizenship:
(i) 5-N Investments, LLC, a Delaware limited liability company

(ii) Dr. Jacob John Novak, a United States citizen

The foregoing persons are hereinafter sometimes collectively referred to as the “Reporting Persons.”  The Reporting Persons have entered into a Joint Filing Agreement, dated February 17, 2015, a copy of which is attached as Exhibit A to the Statement on Schedule 13G filed on February 17, 2015, pursuant to which the Reporting Persons agreed to file this Statement on Schedule 13G and any amendments thereto jointly in accordance with the provisions of Rule 13d-1(k)(1) under the Act.

The address of each of the Reporting Persons is c/o DB Securities Inc., 200 Crescent Court, Suite 500, Dallas, Texas 75201.

Item 2(d).

Title of Class of Securities:
Class A Common Stock, par value $0.01 per share (the “Class A Common Stock”)

Item 2(e).

CUSIP Number:
006855100

Item 3.

If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a:

Not Applicable.

Item 4.

Ownership.

(a)

Amount beneficially owned:   

The ownership percentages set forth below calculated pursuant to Rule 13d-3 of the Securities Exchange Act of 1934, as amended (“Rule 13d-3”), are based on 14,257,599 shares of Class A Common Stock outstanding as of October 26, 2015, as reported in the Form 10-Q of the Issuer, filed with the Securities and Exchange Commission on October 30, 2015, plus the number of shares of Class A Common Stock that may be received upon exchange of limited liability company units of Adeptus Health LLC (“Units of Adeptus Health LLC”) beneficially owned by the Reporting Person.

5-N Investments, LLC beneficially owns 1,447,778 shares of Class A Common Stock (based on the number of shares of Class A Common Stock that may be received in exchange of Units of Adeptus Health LLC held by 5-N Investments, LLC), which represents 9.2% of the total number of shares of Class A Common Stock outstanding calculated pursuant to Rule 13d-3.

Dr. Jacob John Novak, as the manager of 5-N Investments, LLC, may be deemed to beneficially own 1,447,778 shares of Class A Common Stock (based on the number of shares of Class A Common Stock that may be received in exchange of Units of Adeptus Health LLC held by the 5-N Investments, LLC), which represents 9.2% of the total number of shares of Class A Common Stock outstanding calculated pursuant to Rule 13d-3.

On a fully diluted basis, the Reporting Persons may be deemed, in the aggregate, to be the beneficial owners of 7.0% of the outstanding Class A Common Stock, based on 14,257,599 shares of Class A Common Stock and 6,510,738 shares of Class B common stock, par value $0.01 per share, and an equal number of Units of Adeptus Health LLC outstanding as of October 26, 2015.

(b)

Percent of class:   

See Item 4(a) above.

(c)

Number of shares as to which the reporting person has:

(i)

Sole power to vote or to direct the vote:   

See Item 5 of each cover page

(ii)

Shared power to vote or to direct the vote:    

See Item 6 of each cover page

(iii)

Sole power to dispose or to direct the disposition of:   

See Item 7 of each cover page

(iv)

Shared power to dispose or to direct the disposition of:   

See Item 8 of each cover page

Item 5.

Ownership of Five Percent or Less of a Class.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following:   o

Item 6.

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

Not Applicable.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company.

Not Applicable.

Item 8.

Identification and Classification of Members of the Group.

Not Applicable.

Item 9.

Notice of Dissolution of Group.

Not Applicable.

Item 10.

Certifications.

Not Applicable.

5-N INVESTMENTS, LLC

By:

/s/ Jacob John Novak

Name: Jacob John Novak

Title: Manager

JACOB JOHN NOVAK

/s/ Jacob John Novak

Exhibit A

Joint Filing Agreement, dated as of February 17, 2015, by and among the Reporting Persons (filed as Exhibit A to the Schedule 13G filed on February 17, 2015 and incorporated herein by reference).