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Filing Details

Accession Number:: 0001144204-14-055556
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2014-09-12 09:27:43
Reporting Period:: 2014-09-10

Filing Date:: 2014-09-12
Accepted Time:: 2014-09-12 09:27:43
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1070336	Achillion Pharmaceuticals Inc	ACHN	Pharmaceutical Preparations (2834)	000000000

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1315082	Ra Capital Healthcare Fund Lp	C/O Ra Capital Management, Llc 20 Park Plaza, Suite 1200 Boston MA 02116	No	No	Yes	No
1346824	Ra Capital Management, Llc	C/O Ra Capital Management, Llc 20 Park Plaza, Suite 1200 Boston MA 02116	No	No	Yes	No
1384859	Peter Kolchinsky	C/O Ra Capital Management, Llc 20 Park Plaza, Suite 1200 Boston MA 02116	No	No	Yes	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock, $0.001 Par Value	Disposition	2014-09-10	8,600	$12.73	14,695,762	No	4	S	Indirect	See Footnotes
Common Stock, $0.001 Par Value	Disposition	2014-09-10	49,057	$12.69	14,646,705	No	4	S	Indirect	See Footnotes
Common Stock, $0.001 Par Value	Disposition	2014-09-10	273,017	$127,013.00	14,373,688	No	4	S	Indirect	See Footnotes
Common Stock, $0.001 Par Value	Disposition	2014-09-10	69,833	$12.63	14,303,855	No	4	S	Indirect	See Footnotes
Common Stock, $0.001 Par Value	Disposition	2014-09-10	121,943	$12.61	14,181,912	No	4	S	Indirect	See Footnotes
Common Stock, $0.001 Par Value	Disposition	2014-09-11	184,643	$12.41	13,997,269	No	4	S	Indirect	See Footnotes
Common Stock, $0.001 Par Value	Disposition	2014-09-11	83,560	$12.62	13,913,709	No	4	S	Indirect	See Footnotes
Common Stock, $0.001 Par Value	Disposition	2014-09-11	531,352	$12.31	13,382,357	No	4	S	Indirect	See Footnotes
Common Stock, $0.001 Par Value	Disposition	2014-09-11	115,000	$12.33	13,267,357	No	4	S	Indirect	See Footnotes
Common Stock, $0.001 Par Value	Disposition	2014-09-11	17,357	$12.32	13,250,000	No	4	S	Indirect	See Footnotes
Common Stock, $0.001 Par Value	Disposition	2014-09-11	250,000	$12.35	13,000,000	No	4	S	Indirect	See Footnotes

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes

Footnotes

All such shares were sold by RA Capital Healthcare Fund, L.P. (the "Fund").
The securities sold include 223,874 shares for the Fund and 49,143 shares for an account owned by Blackwell Partners, LLC (the "Blackwell Account").
The securities sold include 57,263 shares for the Fund and 12,570 shares for an account owned by the Blackwell Account.
The securities sold include 99,993 shares for the Fund and 21,950 shares for an account owned by the Blackwell Account.
The securities sold include 151,407 shares for the Fund and 33,236 shares for an account owned by the Blackwell Account.
The securities sold include 68,519 shares for the Fund and 15,041 shares for an account owned by the Blackwell Account.
The securities sold include 435,709 shares for the Fund and 95,643 shares for an account owned by the Blackwell Account.
The securities sold include 94,299 shares for the Fund and 20,701 shares for an account owned by the Blackwell Account.
The securities sold include 14,231 shares for the Fund and 3,126 shares for an account owned by the Blackwell Account.
The securities sold include 205,003 shares for the Fund and 44,997 shares for an account owned by the Blackwell Account.
Following the transactions set forth on Table I above, 9,982,562 shares are held by the Fund, and 3,017,438 shares are held in the Blackwell Account.
RA Capital Management, LLC (the "Adviser") is the general partner of the Fund and the investment adviser of the Blackwell Account. Peter Kolchinsky is the sole manager of the Adviser. In their respective capacities, each of Mr. Kolchinsky and the Adviser may be deemed to beneficially own the reported securities.
Pursuant to Rule 16a-1 under the Securities Exchange Act of 1934, as amended (the "Act"), each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of their respective pecuniary interests therein. The filing of this Form 4 shall not be construed as an admission that Mr. Kolchinsky or the Adviser is or was for the purposes of Section 16(a) of the Act, or otherwise, the beneficial owner of any of securities reported herein.