Initial filing by director officer or owner of more than ten percent.

SEC FORM 3 - velhartice.infoSEC 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*
Schlesinger Sarah J.

(Last) (First) (Middle)
8 SYLVAN WAY

(Street)
PARSIPPANY NJ 07054

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
02/22/2018
3. Issuer Name and Ticker or Trading Symbol
MEDICINES CO /DE [ MDCO ]
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)
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)
Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
Remarks:
Exhibit List: Exhibit 24.1 - Power of Attorney
No securities are beneficially owned.
/s/ Stephen M. Rodin, Attorney-in-Fact for Sarah J. Schlesinger 02/26/2018
** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
                               POWER OF ATTORNEY

      Know  all  by  these  presents that the undersigned hereby constitutes and
appoints  each  of  Christopher  Cox  and  Stephen Rodin, signing singly, as the
undersigned's true and lawful attorney-in-fact:

      1)    to   execute   for   and  on  behalf  of  the  undersigned,  in  the
            undersigned's   capacity  as  an  officer  and/or  director  of  The
            Medicines  Company  (the "Company"), Forms 3, 4, and 5 in accordance
            with  Section  16(a)  of the Securities Exchange Act of 1934 and the
            rules thereunder, and any other forms or reports the undersigned may
            be  required  to file with the United States Securities and Exchange
            Commission   in   connection   with   the  undersigned's  ownership,
            acquisition, or disposition of securities of the Company, including,
            but  not  limited  to,  Form  144  and  Form  ID (collectively, "SEC
            Filings");

      2)    to  do  and  perform  any  and  all  acts  for  and on behalf of the
            undersigned  which  may  be  necessary  or desirable to complete and
            execute  any  such  SEC  Filings  and timely file such form with the
            United  States  Securities  and  Exchange  Commission  and any stock
            exchange or similar authority; and

      3)    to  take  any other action of any type whatsoever in connection with
            the foregoing which, in the opinion of such attorney-in-fact, may be
            of  benefit to,
 in the best interest of, or legally required by, the
            undersigned, it being understood that the documents executed by such
            attorney-in-fact on behalf of the undersigned pursuant to this Power
            of  Attorney  shall be in such form and shall contain such terms and
            conditions   as   such   attorney-in-fact   may   approve   in  such
            attorney-in-fact's discretion.

      The undersigned hereby grants to each such attorney-in-fact full power and
authority  to  do  and perform any and every act and thing whatsoever requisite,
necessary,  or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could  do  if personally present, with full power of substitution or revocation,
hereby  ratifying  and  confirming  all  that  such  attorney-in-fact,  or  such
attorney-in-fact's  substitute  or substitutes, shall lawfully do or cause to be
done  by  virtue  of  this  Power  of  Attorney and the rights and powers herein
granted.  The  undersigned acknowledges that the foregoing attorneys-in-fact, in
serving  in  such  capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with  Section  16  of  the  Securities  Exchange  Act of 1934 or Rule 144 of the
Securities Act of 1933.


<PAGE>
      This  Power  of  Attorney  shall remain in full force and effect until the
undersigned  is no longer required to file reports and other forms under Section
16  of the Securities Exchange Act of 1934 and Rule 144 of the Securities Act of
1933  with  respect  to  the  undersigned's  holdings  of  and  transactions  in
securities  of  the  Company, unless (i) earlier revoked by the undersigned in a
signed  writing  delivered  to  the  foregoing  attorneys-in-fact,  or (ii) with
respect   to   each   individual  attorney-in-fact,  upon  their  retirement  or
termination of employment with the Company.

      IN  WITNESS  WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 26th day of February 2018.

                                      By:   /s/ Sarah J. Schlesinger
                                            --------------------------------
                                            Name: Sarah J. Schlesinger