SEC Form 4

FORM 4		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 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Halak Brian K (Last) (First) (Middle) C/O DOMAIN ASSOCIATES, LLC ONE PALMER SQUARE (Street) PRINCETON NJ 08542 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Esperion Therapeutics, Inc. [ ESPR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 07/01/2013
	4. If Amendment, Date of 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

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
Common Stock	07/01/2013		C		1,786,012	A	(1)	1,786,012	I	By Domain Partners VII, L.P.(4)
Common Stock	07/01/2013		P		280,923	A	$14	2,066,935	I	By Domain Partners VII, L.P.(4)
Common Stock	07/01/2013		C		30,462	A	(1)	30,462	I	By DP VII Associates, L.P.(4)
Common Stock	07/01/2013		P		4,791	A	$14	35,253	I	By DP VII Associates, L.P.(4)

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 Securities Underlying Derivative Security (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: 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
Series A Preferred Stock	(1)	07/01/2013		C			1,786,012	(1)	(1)	Common Stock	1,786,012	$0	0	I	By Domain Partners VII, L.P.(4)
Warrant to Purchase Series A Preferred Stock	$1	07/01/2013		J(2)			489,320	(2)	(2)	Series A Preferred Stock	489,320	$0	0	I	By Domain Partners VII, L.P.(4)
Warrant to Purchase Common Stock	$6.99	07/01/2013		J(2)		70,042		(3)	02/12/2018	Common Stock	70,042	$0	70,042	I	By Domain Partners VII, L.P.(4)
Series A Preferred Stock	(1)	07/01/2013		C			30,462	(1)	(1)	Common Stock	30,462	$0	0	I	By DP VII Associates, L.P.(4)
Warrant to Purchase Series A Preferred Stock	$1	07/01/2013		J(2)			8,346	(2)	(2)	Series A Preferred Stock	8,346	$0	0	I	By DP VII Associates, L.P.(4)
Warrant to Purchase Common Stock	$6.99	07/01/2013		J(2)		1,193		(3)	02/12/2018	Common Stock	1,193	$0	1,193	I	By DP VII Associates, L.P.(4)

Explanation of Responses:

1. All outstanding shares of Series A Preferred Stock were automatically converted into Common Stock upon the closing of the Issuer's initial public offering (the "IPO"), for no additional consideration.

2. Upon the closing of the IPO the Warrants to purchase Series A Preferred Stock automatically converted on a 6.986-for-1 basis into Warrants to purchase Common Stock, and the exercise price automatically adjusted to $6.99 per share, pursuant to the terms of such Warrants. This transaction is reported on Form 4 solely for the purpose of reflecting such changes.

3. The Warrant is immediately exercisable.

4. The Reporting Person also indirectly beneficially owns 21,471 shares of Common Stock held by Domain Associates, LLC. The Reporting Person is a Managing Member of (i) One Palmer Square Associates VII, LLC, which is the sole general partner of Domain Partners VII, L.P. and DP VII Associates, L.P. and (ii) Domain Associates, LLC. Pursuant to Instruction (4)(b)(iv) of Form 4, the Reporting Person has elected to report as indirectly beneficially owned the entire number of securities beneficially owned by each such entity. The Reporting Person disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed his or her pecuniary interest therein and/or that are not actually distributed to him or her.

Remarks:

	/s/Kathleen K. Schoemaker, Attorney-in-Fact	07/02/2013
	** Signature of Reporting Person	Date
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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