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Activist investor Starboard takes stake in Shake Shack, source says

By Thomson Reuters Aug 5, 2026 | 11:42 AM

Aug 5 (Reuters) – Activist investor Starboard Value has built a new stake in Shake Shack, a ​source familiar with the ‌matter told Reuters on Wednesday, sending the company’s shares up 11%.

Earlier in the day, the burger chain had reported second-quarter ‌sales ​and profit above ⁠Wall Street estimates, ⁠driven by strong demand for value meals as consumers face rising costs of living.

The results were a ​contrast to its prior quarter when its shares cratered 30% ⁠after it reported ⁠a quarterly loss and warned ​of weak consumer spending. The company, ​which has a market capitalization of $2.83 ‌billion, at the time also named its new financial head.

Starboard Value previously made investments in other ⁠restaurant companies such as french fry supplier Lamb Weston as well as coffee chain ⁠Starbucks.

Bloomberg ‌was the first to ⁠report that Starboard has taken ​a ‌position of several hundred ​million dollars ⁠in Shake Shack.

Starboard and Shake Shack did not immediately respond to a request for comment.

(Reporting by Koyena Das and Svea Herbst-Bayliss; Editing by ​Shailesh Kuber)