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 October 18 through October 22 include:

• Director of Mueller Industries (MLI) Gary Gladstein purchased 11,399 shares of company stock at $47.71 per share for a total transaction amount of $543,846

•  President of HighPeak Energy (HPK) Michael Hollis purchased 45,454 shares of company stock at $10.00 per share for a total transaction amount of $454,540

• Director and Beneficial Owner of Petros Pharmaceuticals (PTPI) John Shulman purchased 1,661,807 shares of company stock at $1.72 per share for a total transaction amount of $2,849,999

•  Beneficial Owner of Safehold (SAFE) iStar purchased 13,185 shares of company stock at $75.84 per share for a total transaction amount of $999,950.

NOTABLE INSIDER SALES: Significant insider sales reported in the prior week from October 18 through October 22 include:

•  Director of Airbnb (ABNB) Belinda Johnson sold 25,000 shares of company stock at $170.06 per share for a total transaction amount of $4,251,500

•  CFO of Baker Hughes (BKR) Brian Worrell sold 29,333 shares of company stock at $24.87 per share for a total transaction amount of $729,512

•  Chairman of DraftKings (DKNG) Jason Robins sold 333,334 shares of company stock at $49.33 per share for a total transaction amount of $16,442,000

•  CFO of Kratos Defense & Security Solutions (KTOS) Deanna Lund sold 11,500 shares of company stock at $22.65 per share for a total transaction amount of $260,432.

NOTABLE PRICE MOVEMENT AFTER INSIDER TRANSACTION: Shares of Mueller Industries are up approximately 8% since director Gary Gladstein purchased 11,399 shares of company stock at $47.71 per share,  while shares of DraftKings are down approximately 8% since chairman Jason Robins sold 333,334 shares of company stock at $49.33 per share.