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Investors & Media

Insider Stock Transactions

The Medicines Company believes it is important that investors understand the intentions and motivations of our senior executives regarding purchases and sales of the Company's common stock. To that end, the Company is providing the comments below, which are posted following stock ownership-related SEC filings by key executives.

This page contains pertinent information regarding updates to stock transactions by senior executives of The Medicines Company and is intended to supplement information contained in the executives' filings with the SEC. A link to actual SEC filings is provided above.

Following are some of the stock ownership-related terms that may be discussed on this page:

10b5-1 Plan: prearranged trading plan: allows corporate insiders to establish prearranged plans to sell or purchase a number or dollar amount of shares of company stock over a predetermined period of time. 10b5-1 plans may be adopted to, among other things, allay concerns about initiating stock transactions while in possession of material nonpublic information.

Form 144: proposed sale: provides the number of shares of Company common stock that the officer intends to sell during the three-month period beginning on the date on which the Form 144 is filed.

Form 4: transaction has been completed: discloses an actual sale or purchase of stock by an insider by reporting a change in his or her beneficial ownership of the Company's securities.

The Medicines Company provides this information as background only and, in doing so, does not undertake to update the postings, nor provide postings for every insider stock transaction. Information contained in this Investor Relations section of our Web site is for informational purposes only, and this information shall not constitute an offer to sell these securities by the Company or any such officer in any jurisdiction.

We hope that this information provides additional transparency to the actions of our senior executives and affirms the trust and confidence that investors have placed in The Medicines Company.

Stock transaction information provided by EDGAR Online. The Medicines Company makes no representation or warranty with respect to any of the information contained herein, takes no responsibility for supplementing, updating or correcting any such information and shall have no liability with respect to any such information. This listing does not include derivatives, such as stock option grants or shares purchased through an employee stock purchase plan. For recent transactions, including derivative transactions, see our Section 16 SEC filings page.