Sec Form 4 Filing - Ehlinger Robert @ LANNETT CO INC - 2015-06-15

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 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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1. Name and Address of Reporting Person Ehlinger Robert 2. Issuer Name and Ticker or Trading Symbol LANNETT CO INC [ LCI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Information Officer (Last) (First) (Middle) 9000 STATE ROAD 3. Date of Earliest Transaction (MM/DD/YY) 06/15/2015 (Street) PHILADELPHIA, PA19136 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 Common Stock 06/15/2015 M 10,425 A $ 5.05 41,897 D Common Stock 06/15/2015 M 7,500 A $ 6.89 49,397 D Common Stock 06/15/2015 M 15,000 A $ 4.03 64,397 D Common Stock 06/15/2015 M 15,000 A $ 6.94 79,397 D Common Stock 06/15/2015 M 18,000 A $ 5.02 97,397 D Common Stock 06/15/2015 M 43,243 A $ 3.55 140,640 D Common Stock 06/15/2015 S 20,838 D $ 56.28 119,802 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible s ecurities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 Stock Option - Right to Buy $ 5.05 06/15/2015 M 10,425 09/20/2009( 1 ) 09/20/2016 Common Stock 10,425 $ 0 0 D Stock Option - Right to Buy $ 6.89 06/15/2015 M 7,500 11/27/2009( 2 ) 11/27/2016 Common Stock 7,500 $ 0 0 D Stock Option - Right to Buy $ 4.03 06/15/2015 M 15,000 09/17/2010( 3 ) 09/17/2017 Common Stock 15,000 $ 0 0 D Stock Option - Right to Buy $ 6.94 06/15/2015 M 15,000 10/28/2012( 4 ) 10/29/2019 Common Stock 15,000 $ 0 0 D Stock Option - Right to Buy $ 5.02 06/15/2015 M 18,000 07/08/2014( 5 ) 07/08/2021 Common Stock 18,000 $ 0 0 D Stock Option - Right to Buy $ 3.55 06/15/2015 M 43,243 08/25/2014( 6 ) 08/25/2021 Common Stock 43,243 $ 0 6,757 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Ehlinger Robert 9000 STATE ROAD PHILADELPHIA, PA19136 Chief Information Officer Signatures /s/ Martin P. Galvan Limited Power of Attorney For: Robert Ehlinger 06/17/2015 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Options became exercisable in annual installments as follows: 3,475 on 9/21/2007, 3,475 on 9/20/2008, and 3,475 on 9/20/2009 ( 2 )Options became exercisable in annual installments as follows: 2,500 on 11/28/2007, 2,500 on 11/27/2008, and 2,500 on 11/27/2009 ( 3 )Options became exercisable in annual installments as follows: 5,000 on 9/17/2008, 5,000 on 9/17/2009, and 5,000 on 9/17/2010 ( 4 )Options became exercisable in annual installments as follows: 5,000 on 10/29/2010, 5,000 on 10/29/2011, and 5,000 on 10/28/2012 ( 5 )Options became exercisable in annual installments as follows: 6,000 on 7/8/2012, 6,000 on 7/8/2013, and 6,000 on 7/8/2014 ( 6 )Options became exercisable in annual installments as follows: 9,909 on 8/25/2012, 16,667 on 8/25/2013, and 16,667 on 8/25/2014

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* 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).

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