Check out which companies are making headlines after the bell Monday:
Hertz Global Holdings - Shares of the car-rental company popped more than 3 percent after it announced that its board had adopted a shareholder rights plan.
FedEx - New York City filed suit against the package-delivery company, accusing it of illegally delivering millions of contraband cigarettes to residences and violating a 2006 settlement. Shares of FedEx edged lower in after-hours trading.
Twitter - Shares of the social media company were off in extended-hours trading, continuing a slide from last week.
Lowe's Companies - The home-improvement retailer's shares slid after a report showed pending home sales came in below expectations.
—By CNBC's Kate Gibson.
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