Mersana Therapeutics Inc (NASDAQ:MRSN) major shareholder M James Barrett acquired 1,000,000 shares of the stock in a transaction dated Monday, July 3rd. The shares were purchased at an average cost of $15.00 per share, with a total value of $15,000,000.00. The purchase was disclosed in a document filed with the Securities & Exchange Commission, which is available at this hyperlink. Major shareholders that own 10% or more of a company’s stock are required to disclose their sales and purchases with the SEC.

Shares of Mersana Therapeutics Inc (MRSN) traded down 4.57% during trading on Thursday, hitting $13.35. 146,968 shares of the company traded hands. Mersana Therapeutics Inc has a 52 week low of $12.71 and a 52 week high of $14.70. The stock’s market cap is $302.32 million.

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About Mersana Therapeutics

Mersana Therapeutics, Inc is a United States-based biotechnology company focused on discovering and developing a pipeline of antibody drug conjugates (ADCs). The Company focuses on advancing a pipeline of targeted oncology therapeutics leveraging its Fleximer immunoconjugate technology. The Fleximer platform allows it to design ADCs with specific properties and manage the drug’s chances of attacking cancers.

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