FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Stephan Robert   2. Issuer Name and Ticker or Trading Symbol CORNERSTONE THERAPEUTICS INC [CRTX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O CHIESI FARMACEUTICI SPA, VIA PALERMO 26/A 3. Date of Earliest Transaction (Month/Day/Year) 02/03/2014 (Street) PARMA, L6 L643122 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Option to Purchase Common Stock (Right to Buy)

$ 5.97

02/03/2014

D

22,500

(1)

05/20/2020

Common Stock

22,500

$ 3.53 (1)

0

D

Option to Purchase Common Stock (Right to Buy)

$ 7.15

02/03/2014

D

15,000

(1)

05/18/2021

Common Stock

15,000

$ 2.35 (1)

0

D

Option to Purchase Common Stock (Right to Buy)

$ 5.11

02/03/2014

D

15,000

(1)

05/22/2022

Common Stock

15,000

$ 4.39 (1)

0

D

Option to Purchase Common Stock (Right to Buy)

$ 8.34

02/03/2014

D

15,000

(2)

05/22/2023

Common Stock

15,000

$ 1.16 (2)

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Stephan Robert C/O CHIESI FARMACEUTICI SPA VIA PALERMO 26/A PARMA, L6 L643122	X

Signatures

/s/ Amy Diebler, attorney-in-fact for Robert Stephan pursuant to a power of attorney		02/04/2014
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Pursuant to the Agreement and Plan of Merger (the "Agreement") by and among Chiesi Farmaceutici S.p.A., Chiesi U.S. Corporation, and Cornerstone Therapeutics Inc., dated as of September 15, 2013, on the effective date of the merger contemplated by the Agreement (the "Merger"), this option, which was fully vested, was cancelled in exchange for a cash payment equal to the product of (i) the excess of $9.50 over the exercise price per share of the option and (ii) the total number of shares underlying the option.
(2)	This option, which provided for vesting in equal monthly increments over a one-year period, was cancelled in the Merger in exchange for a cash payment equal to the product of (i) the excess of $9.50 over the exercise price per share of the option and (ii) the total number of shares underlying the option.

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