After-hours buzz: Herbalife, GoGo, AT&T & More

Herbalife Formula 1 Nutritional Shake Mix

Source: Herbalife

Check out which companies are making headlines after the bell Monday:

Herbalife - Shares of the company gained in after-hours trade after it posted first-quarter results that topped estimates.

Container Store - The retailer's shares fell in after-hours trade after reporting weaker-than-expected fourth-quarter results.

Buffalo Wild Wings - The restaurant-franchise operator gained in after-hours trade after posting better-than-expected first-quarter results.

GoGo - The provider of in-flight Internet connectivity fell in after-hours trade on an AT&T plan to launch a high-speed, in-flight connectivity network for passengers and airlines.

—By CNBC's Kate Gibson

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