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Filing Details

Accession Number:: 0001144204-15-002866
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2015-01-20 18:09:30
Reporting Period:: 2013-07-15

Filing Date:: 2015-01-20
Accepted Time:: 2015-01-20 18:09:30
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	No	Yes
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
Common Stock, $0.001 Par Value	Acquisiton	2013-07-17	38,400	$7.09	5,365,873	No	4	P	Direct
Common Stock, $0.001 Par Value	Disposition	2013-07-19	38,400	$7.21	5,327,473	No	4	S	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-07-22	24,883	$7.16	5,365,873	No	4	P	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-07-22	38,400	$7.23	5,340,990	No	4	P	Direct
Common Stock, $0.001 Par Value	Disposition	2013-07-24	7,862	$7.26	5,302,590	No	4	S	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-07-25	37,250	$7.19	5,310,452	No	4	P	Direct
Common Stock, $0.001 Par Value	Disposition	2013-07-25	14,592	$7.15	5,273,202	No	4	S	Direct
Common Stock, $0.001 Par Value	Disposition	2013-07-25	40,829	$7.19	5,287,794	No	4	S	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-07-29	11,441	$6.90	5,328,623	No	4	P	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-07-29	6,453	$6.91	5,317,182	No	4	P	Direct
Common Stock, $0.001 Par Value	Disposition	2013-07-29	3,377	$6.95	5,310,729	No	4	S	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-08-02	23,100	$6.98	5,314,106	No	4	P	Direct
Common Stock, $0.001 Par Value	Disposition	2013-08-05	23,100	$7.11	5,291,006	No	4	S	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-08-09	77,000	$6.30	5,314,106	No	4	P	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-08-20	38,500	$6.75	5,237,106	No	4	P	Direct
Common Stock, $0.001 Par Value	Disposition	2013-08-20	9,951	$6.86	5,198,606	No	4	S	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-08-21	23,100	$6.69	5,208,557	No	4	P	Direct
Common Stock, $0.001 Par Value	Disposition	2013-08-21	4,312	$6.87	5,185,457	No	4	S	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-08-22	52,652	$6.76	5,189,769	No	4	P	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-08-26	115,500	$6.58	5,137,117	No	4	P	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-08-26	38,500	$6.58	5,021,617	No	4	P	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-08-27	77,000	$6.49	4,983,117	No	4	P	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-08-28	38,500	$6.39	4,906,117	No	4	P	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-09-11	19,400	$7.18	4,867,617	No	4	P	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-09-11	19,400	$7.21	4,848,217	No	4	P	Direct
Common Stock, $0.001 Par Value	Disposition	2013-09-11	38,800	$7.30	4,828,817	No	4	S	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-09-12	6,906	$7.20	4,867,617	No	4	P	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-09-12	4,190	$7.21	4,860,711	No	4	P	Direct
Common Stock, $0.001 Par Value	Acquisiton	2013-09-12	7,761	$7.21	4,856,521	No	4	P	Direct
Common Stock, $0.001 Par Value	Disposition	2013-09-12	18,857	$7.27	4,848,760	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	P	Direct
No	4	S	Direct
No	4	P	Direct
No	4	P	Direct
No	4	S	Direct
No	4	P	Direct
No	4	S	Direct
No	4	S	Direct
No	4	P	Direct
No	4	P	Direct
No	4	S	Direct
No	4	P	Direct
No	4	S	Direct
No	4	P	Direct
No	4	P	Direct
No	4	S	Direct
No	4	P	Direct
No	4	S	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	S	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	S	Direct

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Call Option (right to buy)	Acquisiton	2013-07-15	768	$2.64	76,800	$7.50
Common Stock	Call Option (obligation to sell)	Disposition	2013-07-15	768	$0.39	76,800	$20.00
Common Stock	Call Option (right to buy)	Acquisiton	2013-07-25	3,072	$2.75	307,200	$7.50
Common Stock	Call Option (obligation to sell)	Disposition	2013-07-25	3,072	$0.40	307,200	$20.00
Common Stock	Call Option (right to buy)	Acquisiton	2013-09-26	7,760	$1.36	776,000	$7.50
Common Stock	Call Option (obligation to sell)	Disposition	2013-09-26	7,760	$0.05	776,000	$15.00

Remaning Holdings	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
768	2015-01-17	No	4	P	Direct
768	2015-01-17	No	4	S	Direct
3,072	2015-01-17	No	4	P	Direct
3,072	2015-01-17	No	4	S	Direct
7,760	2014-01-18	No	4	P	Direct
7,760	2014-01-18	No	4	S	Direct

Footnotes

The reported securities are owned by RA Capital Healthcare Fund, L.P. (the "Fund"). RA Capital Management, LLC (the "Adviser") is the general partner of the Fund, and Peter Kolchinsky is the sole manager of the Adviser. The Adviser and Mr. Kolchinsky disclaim beneficial ownership of the reported securities in reliance on Rule 16a-1(a)(1)(v) and (vii), respectively, and therefore disclaim any obligation to report ownership of the reported securities other than on behalf of the Fund. The filing of this Form 4 shall not be construed as an admission that either the Adviser or Mr. Kolchinsky is or was, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the beneficial owner of any of the securities reported herein. The number of shares reported in Column 5 of Table I and the number of options reported in Column 9 of Table II reflect the number of shares or options, as applicable, beneficially owned by the Fund as of the filing date of this Form 4.
These options are exercisable at any time prior to their expiration.
These options reflect an "option spread" strategy pursuant to which the Fund simultaneously (1) purchased 768 call option contracts, each representing a right to purchase 100 shares of the issuer's common stock at $7.50 per share and (2) sold 768 call option contracts, each representing an obligation to sell 100 shares of the issuer's common stock at $20.00 per share.
These options reflect an "option spread" strategy pursuant to which the Fund simultaneously (1) purchased 3,072 call option contracts, each representing a right to purchase 100 shares of the issuer's common stock at $7.50 per share and (2) sold 3,072 call option contracts, each representing an obligation to sell 100 shares of the issuer's common stock at $20.00 per share.
These options reflect an "option spread" strategy pursuant to which the Fund simultaneously (1) purchased 7,760 call option contracts, each representing a right to purchase 100 shares of the issuer's common stock at $7.50 per share and (2) sold 7,760 call option contracts, each representing an obligation to sell 100 shares of the issuer's common stock at $15.00 per share.
On July 15, 2013, the Fund became a beneficial owner of more than ten percent of the outstanding shares the issuer's common stock and therefore became subject to Section 16 of the Securities Exchange Act of 1934. On September 23, 2014, the Fund ceased to be a beneficial owner of more than ten percent of the outstanding shares the issuer's common stock and ceased to be subject to Section 16.