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^*

AFTING ERNST-GUENTER

(Last)

(First)

(Middle)

C/O ENANTA PHARMACEUTICALS, INC.

500 ARSENAL STREET

(Street)

WATERTOWN

02472

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/20/2013

3. Issuer Name and Ticker or Trading Symbol
ENANTA PHARMACEUTICALS INC [ ENTA ]

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	15,661	D

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 Convertible Preferred Stock	⁽¹⁾	⁽¹⁾	Common Stock	2,320	⁽¹⁾	D
Series B Convertible Preferred Stock	⁽²⁾	⁽²⁾	Common Stock	2,320	⁽²⁾	D
Series C Convertible Preferred Stock	⁽³⁾	⁽³⁾	Common Stock	674	⁽³⁾	D
Series E Convertible Preferred Stock	⁽⁴⁾	⁽⁴⁾	Common Stock	97	⁽⁴⁾	D
Series G-2 Convertible Preferred Stock	⁽⁵⁾	⁽⁵⁾	Common Stock	11,215	⁽⁵⁾	D
Stock Option (right to buy)	⁽⁶⁾	06/18/2017	Common Stock	13,921	$2.97	D
Stock Option (right to buy)	⁽⁶⁾	12/31/2020	Common Stock	5,800	$2.54	D

Explanation of Responses:

1. The Series A Convertible Preferred Stock has no expiration date, and each share of Series A Convertible Preferred Stock will convert automatically into approximately 0.23202 shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration.

2. The Series B Convertible Preferred Stock has no expiration date, and each share of Series B Convertible Preferred Stock will convert automatically into approximately 0.23202 shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration.

3. The Series C Convertible Preferred Stock has no expiration date, and each share of Series C Convertible Preferred Stock will convert automatically into approximately 0.23202 shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration.

4. The Series E Convertible Preferred Stock has no expiration date, and each share of Series E Convertible Preferred Stock will convert automatically into approximately 0.30529 shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration.

5. The Series G-2 Convertible Preferred Stock has no expiration date, and each share of Series G-2 Convertible Preferred Stock will convert automatically into approximately 0.23202 shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration.

6. 100% of the shares subject to the option are fully vested and exercisable.

Remarks:

	/s/ Ernst-Guenter Afting	03/20/2013
	** 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 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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