Welcome to "Fly Insider," The Fly's weekly recap of notable insider stock transactions.

NOTABLE INSIDER PURCHASES: Significant insider purchases reported in the prior week from January 27 through January 31 include:

• Chairman of Adaptimmune Therapeutics (ADAP) David Mott purchased 1,250,000 shares of company stock at $4.00 per share for a total transaction value of  $5,000,250

• CEO of Anthem (ANTM) Gail Boudreaux purchased 7,600 shares of company stock at $263.70 per share for a total transaction value of$2,004,152

• Chairman of Vaccinex (VCNX) Albert Friedberg purchased 982,318 shares of company stock at $5.09 per share for a total transaction value of $4,999,999

• Beneficial owner of Northern Oil & Gas (NOG) Robert Rowling purchased 3,364,000 shares of company stock at $1.67 per share for a total transaction value of $5,632,345

• CEO of Discover Financial Services (DFS) Roger Hochschild purchased 15,000 shares of company stock at $74.12 per share for a total transaction value of $1,111,821

NOTABLE INSIDER SALES: Significant insider sales reported in the prior week from January 27 through January 31 include:

• Chairman of BlackRock (BLK) Laurence Fink sold 46,730 shares of company stock at $536.74 per share for a total transaction value of $25,081,921

• Officer of Lennar (LEN) David Collins sold 20,000 shares of company stock at $67.22 per share for a total transaction value of $1,344,400

• Chairman of Texas Instruments (TXN) Richard Templeton sold 212,576 shares of company stock at $124.22 per share for a total transaction value of $26,406,76

• VP of Adobe (ADBE) Dana Rao sold 2,919 shares of company stock at $353.66 per share for a total transaction value of $1,032,332

• VP of Lockheed Martin (LMT) Michele Evans sold 9,629 shares of company stock at $432.22 per share for a total transaction value of $4,161,823

NOTABLE PRICE MOVEMENT AFTER INSIDER TRANSACTION: Shares of  Vaccinex are up approximately 70% since the insider purchase, while shares of Texas Instruments are down approximately 6% since the insider sale.