Filing Details

CUSIP No.

45256B101

1.

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Hound Partners, LLC

2.

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a)  [_]

(b)  [X]

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

0

6.

SHARED VOTING POWER

4,436,376

7.

SOLE DISPOSITIVE POWER

0

8.

SHARED DISPOSITIVE POWER

4,436,376

9.

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

4,436,376

10.

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

[_]

11.

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

6.01%

CUSIP No.

45256B101

1.

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Hound Performance, LLC

2.

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a)  [_]

(b)  [X]

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

0

6.

SHARED VOTING POWER

4,309,611

7.

SOLE DISPOSITIVE POWER

0

8.

SHARED DISPOSITIVE POWER

4,309,611

9.

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

4,309,611

10.

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

[_]

11.

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

5.83%

CUSIP No.

45256B101

1.

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Jonathan Auerbach*

2.

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a)  [_]

(b)  [X]

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

0

6.

SHARED VOTING POWER

4,436,376

7.

SOLE DISPOSITIVE POWER

0

8.

SHARED DISPOSITIVE POWER

4,436,376

9.

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

4,436,376

10.

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

[_]

11.

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

6.01%

CUSIP No.

45256B101

Item 1.

(a).

Name of Issuer:

Impax Laboratories, Inc.

(b).

Address of issuer's principal executive offices:

The Proscenium
30831 Huntwood Avenue
Hayward, California 94544

Item 2.

(a) – (c)

Hound Partners, LLC

Hound Performance, LLC

Jonathan Auerbach

(d).

Title of class of securities:

Class A Common Stock, $.01 par value per share

(e).

CUSIP No.:

45256B101

Item 3.

(a)

[_]

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b)

[_]

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c)

[_]

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d)

[_]

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e)

[X]

An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f)

[_]

An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g)

[_]

A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);

(h)

[_]

A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C.1813);

(i)

[_]

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

[_]

A non-U.S. institution in accordance with §240.13d-1(b)(1)(ii)(J);

 

Item 4.

Ownership.

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a)

Amount beneficially owned:

Hound Partners, LLC

4,436,376 shares

Hound Performance, LLC

4,309,611 shares

Jonathan Auerbach

4,436,376 shares

(b)

Percent of class:

Hound Partners, LLC

6.01%

Hound Performance, LLC

5.83%

Jonathan Auerbach

6.01%

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote

Hound Partners, LLC

0

Hound Performance, LLC

0

Jonathan Auerbach

0

(ii)

Shared power to vote or to direct the vote

Hound Partners, LLC

4,436,376 shares

Hound Performance, LLC

4,309,611 shares

Jonathan Auerbach

4,436,376 shares

(iii)

Sole power to dispose or to direct the disposition of

Hound Partners, LLC

0

Hound Performance, LLC

0

Jonathan Auerbach

0

(iv)

Shared power to dispose or to direct the disposition of

Hound Partners, LLC

4,436,376 shares

Hound Performance, LLC

4,309,611 shares

Jonathan Auerbach

4,436,376 shares

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 [_].

 

N/A

Item 6.

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

If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than five percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.

 

N/A

 

 

Item 7.

 

 

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

 

If a parent holding company or Control person has filed this schedule, pursuant to Rule 13d-1(b)(1)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company or control person has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.

 

N/A

Item 8.

Identification and Classification of Members of the Group.

If a group has filed this schedule pursuant to ss.240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to ss.240.13d-1(c) or ss.240.13d-1(d), attach an exhibit stating the identity of each member of the group.

 

N/A

Item 9.

Notice of Dissolution of Group.

Notice of dissolution of a group may be furnished as an exhibit stating the date of the dissolution and that all further filings with respect to transactions in the security reported on will be filed, if required, by members of the group, in their individual capacity. See Item 5.

 

N/A

Item 10.

Certification.

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having such purpose or effect.

February 14, 2017

(Date)

HOUND PARTNERS, LLC (1)

By:

/s/ Courtney Lewis

Courtney Lewis, Authorized Person

HOUND PERFORMANCE, LLC (1)

By:

/s/ Courtney Lewis

Courtney Lewis, Authorized Person

/s/ Jonathan Auerbach (1)

JONATHAN AUERBACH

HOUND PARTNERS, LLC

By:

/s/ Courtney Lewis

Courtney Lewis, Authorized Person

HOUND PERFORMANCE, LLC

By:

/s/ Courtney Lewis

Courtney Lewis, Authorized Person

/s/ Jonathan Auerbach

JONATHAN AUERBACH