The 25 Biggest Insider Purchases in October

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11. Arvinas Inc. (NYSE:ARVN)

Who Bought Shares: President and CEO John G. Houston

How Many Shares Were Bought: 30,000 @ $16.00 per share

Date of the Transaction(s): October 1

Arvinas Inc. (NYSE:ARVN) President and CEO John G. Houston purchased 30,000 shares during his company’s initial public offering, which kicked off on September 27, raising his position to 772,860 shares. The early-stage biopharmaceutical company is focused on developing protein degradation treatments that could be used to combat challenging forms of cancer and other diseases.

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