SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

CHA ALBERT

(Last)

(First)

(Middle)

C/O ACLARIS THERAPEUTICS, INC.

101 LINDENWOOD DRIVE, SUITE 400

(Street)

MALVERN

19355

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/06/2015

3. Issuer Name and Ticker or Trading Symbol
Aclaris Therapeutics, Inc. [ ACRS ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	289,854	I	By Funds⁽¹⁾

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Series A Preferred Stock	⁽²⁾	⁽²⁾	Common Stock	2,507,970	⁽²⁾	I	By Funds⁽¹⁾
Series B Preferred Stock	⁽³⁾	⁽³⁾	Common Stock	527,009	⁽³⁾	I	By Funds⁽¹⁾
Series C Preferred Stock	⁽⁴⁾	⁽⁴⁾	Common Stock	398,667	⁽⁴⁾	I	By Funds⁽¹⁾

Explanation of Responses:

1. The reporting person is one of the managing members of Vivo Ventures VII, LLC ("VV LLC"), which is the general partner of each of Vivo Ventures Fund VII, L.P. ("VVF") and Vivo Ventures VII Affiliates Fund, L.P. ("VVAF"), the record holders of the securities, and may be deemed to share voting and dispositive power over the securities held by VVF and VVAF. The reporting person disclaims beneficial ownership over such securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

2. Each share of the Series A Preferred Stock is convertible, at any time, at the holder's election, into 0.289855 shares of the Issuer's common stock. In addition, effective immediately prior to the closing of the Issuer's initial public offering of its common stock, each share of Series A Preferred Stock will automatically convert into 0.289855 shares of the Issuer's common stock. The Series A Preferred Stock has no expiration date.

3. Each share of the Series B Preferred Stock is convertible, at any time, at the holder's election, into 0.289855 shares of the Issuer's common stock. In addition, effective immediately prior to the closing of the Issuer's initial public offering of its common stock, each share of Series B Preferred Stock will automatically convert into 0.289855 shares of the Issuer's common stock. The Series B Preferred Stock has no expiration date.

4. Each share of the Series C Preferred Stock is convertible, at any time, at the holder's election, into 0.289855 shares of the Issuer's common stock. In addition, effective immediately prior to the closing of the Issuer's initial public offering of its common stock, each share of Series C Preferred Stock will automatically convert into 0.289855 shares of the Issuer's common stock. The Series C Preferred Stock has no expiration date.

Remarks:

Exhibit 24.1 - Power of Attorney

	/s/ Brian F. Leaf, Attorney-in-Fact	10/06/2015
	** 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 5 (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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