As filed with the Securities and Exchange Commission on January 28, 2020
Registration No. 333-153870
UNITED STATES
SECURITIES
AND EXCHANGE COMMISSION
Washington, D.C. 20549
POST-EFFECTIVE AMENDMENT NO. 1
TO
FORM S-3
REGISTRATION STATEMENT
UNDER
THE
SECURITIES ACT OF 1933
Achillion Pharmaceuticals, Inc.
(Exact name of registrant as specified in its charter)
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Delaware
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52-2113479
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(State or other jurisdiction of
incorporation or organization)
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(I.R.S. employer
identification no.)
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300 George Street
New Haven, Connecticut 06511
(475) 230-2596
(Address, including zip code, and telephone number,
including area code, of registrants principal executive offices)
Aradhana Sarin
President
Achillion
Pharmaceuticals, Inc.
300 George Street
New Haven, Connecticut 06511
(Name and address of agent for service)
(475) 230-2596
(Telephone number, including area code, of agent for service)
Copies to:
Ellen
Chiniara, Esq.
Executive Vice President, General Counsel
Alexion Pharmaceuticals, Inc.
121 Seaport Boulevard
Boston, Massachusetts 02210
Telephone: (475) 230-2596
Approximate date of commencement of proposed sale to the public: Not applicable. This Post-Effective Amendment relates solely to the
removal from registration of securities that were not sold pursuant to the above-referenced registration statement.
If the only
securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. ☐
If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the
Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. ☐
If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check
the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐
If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the
Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐
If
this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the
following box. ☐
If this Form is a post-effective amendment to a registration statement filed pursuant to General
Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of large accelerated filer, accelerated filer, smaller reporting
company, and emerging growth company in Rule 12b-2 of the Exchange Act.
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Large accelerated filer
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Accelerated filer
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Non-accelerated filer
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☐
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Smaller reporting company
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☒
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Emerging growth company
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If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended
transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of Securities Act. ☐