Russ Savage, founder of Rockstar Energy, says he has built a stake in Celsius Holdings and is pushing for changes at the company’s leadership. Savage tells CNBC that he controls about 12 million shares of Celsius, which he estimates represent roughly 4.7% of the energy drink maker. Quartz similarly reports that Savage holds around 4.7% of Celsius stock and argues the company should replace its chief executive following a recent earnings miss. Both outlets link Savage’s current push to the period after Celsius reports weaker-than-expected results, framing it as an effort to influence management and strategy rather than a passive investment. Savage is also described as the founder who previously sold Rockstar Energy to PepsiCo for more than $4 billion, establishing his background and financial stake that now positions him as a significant outside investor. The reports indicate Savage is not only holding shares but actively seeking to remove the current CEO, using his ownership stake and public statements to press his case. Celsius’s response to the proposal is not detailed in the provided excerpts.