<SEC-DOCUMENT>0000078003-17-000042.txt : 20171018
<SEC-HEADER>0000078003-17-000042.hdr.sgml : 20171018
<ACCEPTANCE-DATETIME>20171018154110
ACCESSION NUMBER:		0000078003-17-000042
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20171018
DATE AS OF CHANGE:		20171018

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			RHYTHM PHARMACEUTICALS, INC.
		CENTRAL INDEX KEY:			0001649904
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				462159271
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-90134
		FILM NUMBER:		171142626

	BUSINESS ADDRESS:	
		STREET 1:		500 BOYLSTON STREET
		STREET 2:		11TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		857-264-4280

	MAIL ADDRESS:	
		STREET 1:		500 BOYLSTON STREET
		STREET 2:		11TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	RHYTHM METABOLIC, INC.
		DATE OF NAME CHANGE:	20150803

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PFIZER INC
		CENTRAL INDEX KEY:			0000078003
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				135315170
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		235 E 42ND ST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
		BUSINESS PHONE:		2125732323

	MAIL ADDRESS:	
		STREET 1:		235 E 42ND ST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PFIZER CHARLES & CO INC
		DATE OF NAME CHANGE:	19710908
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>frhy13g.htm
<DESCRIPTION>SCHEDULE 13G
<TEXT>
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<div><a name="sAA909B6DC69AA52E924330664C3D58E0"></a></div><div></div><div><br></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;</font></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">UNITED STATES <br>SECURITIES AND EXCHANGE COMMISSION <br>WASHINGTON, D.C. 20549</font><font style="font-family:inherit;font-size:12pt;">&#32;</font><font style="font-family:inherit;font-size:10pt;">&#32;<br> <br></font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">SCHEDULE 13G</font><font style="font-family:inherit;font-size:12pt;">&#32;</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">UNDER THE SECURITIES EXCHANGE ACT OF 1934 <br>(Amendment No. )*</font><font style="font-family:inherit;font-size:10pt;">&#32;<br> <br></font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Rhythm Pharmaceuticals, Inc.</font><font style="font-family:inherit;font-size:12pt;">&#32;<br>(Name of Issuer)</font><font style="font-family:inherit;font-size:10pt;">&#32;<br> <br></font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Common Stock, par value $0.001 per share</font><font style="font-family:inherit;font-size:12pt;">&#32;<br>(Title of Class of Securities)</font><font style="font-family:inherit;font-size:10pt;">&#32;<br> <br></font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">76243J105</font><font style="font-family:inherit;font-size:12pt;">&#32;<br>(CUSIP Number)</font><font style="font-family:inherit;font-size:10pt;">&#32;<br> <br></font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">October 10, 2017</font><font style="font-family:inherit;font-size:12pt;">&#32;<br>(Date of Event Which Requires Filing of this Statement)</font></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#32;<br>Check the appropriate box to designate the rule pursuant to which this Schedule <br>is filed:</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;">&#32;<br>|&#160;&#160; |&#160; Rule 13d-1(b) <br>|X | &#160;Rule 13d-1(c) <br>|&#160;&#160; | &#160;Rule 13d-1(d)</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;">&#32;<br>*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;">&#32;<br>The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).</font></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">CUSIP No.&#160;&#160;76243J105 <br>-------------------------------------------------------------------------------- <br>1) Names of Reporting Persons. PFIZER INC. <br>I.R.S. Identification Nos. of Above Persons (entities only) 13-5315170 <br>-------------------------------------------------------------------------------- <br>2) Check the Appropriate Box if a Member of a Group (See Instructions) <br>(a) |_|</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;">(b) |_| <br>-------------------------------------------------------------------------------- <br>3) SEC Use Only <br>-------------------------------------------------------------------------------- <br>4) Citizenship or Place of Organization <br>Delaware <br>--------------------------------------------------------------------------------</font></div><div style="line-height:120%;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:88.67521367521367%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td style="width:27%;"></td><td style="width:73%;"></td></tr><tr><td rowspan="4" style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">NUMBER OF <br>SHARES  <br>BENEFICIALLY  <br>OWNED BY EACH REPORTING <br>PERSON WITH:</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:6px;padding-bottom:6px;padding-right:2px;"><div style="padding-bottom:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">5. Sole Voting Power 1,427,639 shares of Common Stock, $0.001 par value per share ("Common Stock")</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:6px;padding-bottom:6px;padding-right:2px;"><div style="padding-bottom:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">6. Shared Voting Power &#160;0</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:6px;padding-bottom:6px;padding-right:2px;"><div style="padding-bottom:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">7. Sole Dispositive Power&#160;1,427,639 shares of Common Stock</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:6px;padding-bottom:6px;padding-right:2px;"><div style="padding-bottom:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">8. Shared Dispositive Power 0</font></div></td></tr></table></div></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">-------------------------------------------------------------------------------- <br>9) Aggregate Amount Beneficially Owned by Each Reporting Person&#160; 1,427,639 shares of Common Stock <br>10) Check if the Aggregate Amount in Row (9) Excludes Certain Shares <br>(See Instructions) |_| <br>11) Percent of Class Represented by Amount in Item 9&#160;&#160;&#160;&#160;&#160; 5.4&#160;%</font><font style="font-family:inherit;font-size:10pt;">(1)</font><font style="font-family:inherit;font-size:12pt;">&#32;<br>12) Type of Reporting Person (See Instructions)&#160;&#160; CO</font></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">ITEM 1. <br>(A) NAME OF ISSUER: Rhythm Pharmaceuticals, Inc. <br>(B) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICE:&#160;&#160;500 Boylston Street, 11th Floor, MA 02116</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;">&#32;<br>ITEM 2.  <br>(A) NAME OF PERSONS FILING: This statement is being filed by Pfizer Inc., a Delaware corporation ("Pfizer")  <br>(B) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR IF NONE, RESIDENCE: The principal address of&#160; Pfizer is 235 E. 42nd Street, New York, NY 10017. <br>(C) CITIZENSHIP: Delaware <br>(D) TITLE OF CLASS OF SECURITIES: Common Stock &#160;&#160; <br>(E) CUSIP NUMBER: &#160;76243J105</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;">&#32;<br>ITEM 3. If this statement is filed pursuant to &#167;&#167; 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: <br>Not applicable.  <br>(a)&#160;</font><font style="font-family:Wingdings;font-size:12pt;">&#168;</font><font style="font-family:inherit;font-size:12pt;">&#32;Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);  <br>(b) </font><font style="font-family:Wingdings;font-size:12pt;">&#168;</font><font style="font-family:inherit;font-size:12pt;">&#32;Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);  <br>(c)&#160;</font><font style="font-family:Wingdings;font-size:12pt;">&#168;</font><font style="font-family:inherit;font-size:12pt;">&#32;Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c). <br>(d)&#160;</font><font style="font-family:Wingdings;font-size:12pt;">&#168;</font><font style="font-family:inherit;font-size:12pt;">&#32;Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8); <br>(e) </font><font style="font-family:Wingdings;font-size:12pt;">&#168;</font><font style="font-family:inherit;font-size:12pt;">&#32;An investment adviser in accordance with &#167; 240.13d-1(b)(1)(ii)(E);</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;">(f )&#160;</font><font style="font-family:Wingdings;font-size:12pt;">&#168;</font><font style="font-family:inherit;font-size:12pt;">&#160;An employee benefit plan or endowment fund in accordance with &#167; 240.13d-1(b)(1)(ii)(F);  <br>(g) </font><font style="font-family:Wingdings;font-size:12pt;">&#168;</font><font style="font-family:inherit;font-size:12pt;">&#160;A parent holding company or control person in accordance with &#167; 240.13d-1(b)(1)(ii)(G);&#160;&#160; <br>(h)&#160;</font><font style="font-family:Wingdings;font-size:12pt;">&#168;</font><font style="font-family:inherit;font-size:12pt;">&#32;A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);  <br>(i )&#160;</font><font style="font-family:Wingdings;font-size:12pt;">&#168;</font><font style="font-family:inherit;font-size:12pt;">&#32;A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3); <br>(j) &#160;</font><font style="font-family:Wingdings;font-size:12pt;">&#168;</font><font style="font-family:inherit;font-size:12pt;">&#32;A non-US institution, in accordance&#160;with &#167; 240.13d-1(b)(1)(ii)(J);&#160; <br>(k) </font><font style="font-family:Wingdings;font-size:12pt;">&#168;</font><font style="font-family:inherit;font-size:12pt;">&#32;Group, in accordance with &#167; 230.405 240.13d-1(b)(1)(ii)(K).</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;">&#32;<br>If filing as a non-US institution in accordance with &#167; 240.13d-1(b)(1)(ii)(J), please specify the type of institution: Not applicable.</font></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">ITEM 4. OWNERSHIP. <br>(a) Amount beneficially owned: 1,427,639 shares of Common Stock <br>(b) Percent of class: &#160;&#160;&#160;5.4% </font><font style="font-family:inherit;font-size:10pt;">(1)</font><font style="font-family:inherit;font-size:12pt;">&#32;<br>(c) Number of shares as to which the person has:  <br>(i) Sole power to vote or to direct the vote: 1,427,639 shares of Common Stock <br>(ii) Shared power to vote or to direct the vote: 0 <br>(iii) Sole power to dispose or to direct the disposition of: &#160;1,427,639 shares of Common Stock <br>(iv) Shared power to dispose or to direct the disposition of:&#160;&#160;&#160;0 </font></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:10pt;">(1)</font><font style="font-family:inherit;font-size:12pt;">&#32;The ownership percentage of the Reporting Person has been calculated on the basis of </font><font style="font-family:inherit;font-size:12pt;">&#160;26,226,640 shares of Common Stock&#160; </font><font style="font-family:inherit;font-size:12pt;">outstanding as disclosed by the Issuer in its prospectus (Form 424B4) filed with the Securities and Exchange Commission on October 5, 2017.&#160;</font></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS <br>Not applicable. <br>ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON <br>Not applicable. <br>ITEM 7. &#160;IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY <br>Not applicable. <br>ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP <br>Not applicable. <br>ITEM 9. NOTICE OF DISSOLUTION OF GROUP <br>Not applicable. <br>ITEM 10. CERTIFICATION.</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;">&#32;<br>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.</font></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#32;<br>&#160;</font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Signature</font></div><div style="line-height:120%;padding-bottom:16px;padding-top:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;">&#32;<br>Dated: October 18, 2017</font></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">PFIZER INC.</font><font style="font-family:inherit;font-size:10pt;">&#32;<br></font><font style="font-family:inherit;font-size:12pt;">&#32;<br>By: /s/ Susan Grant <br>Name: Susan Grant <br>Title: Assistant Secretary</font></div><div style="line-height:120%;padding-bottom:16px;padding-top:6px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:138%;padding-bottom:13px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div><br></div><div></div>	</body>
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