Brazilian private-equity firm 3G Capital Partners LP's leadership will remain at the helm of a combined Kraft-Heinz packaged food giant, as the company announced 10 leadership positions Monday, with 3G executives filling eight of the spots.

In addition to Heinz's Bernardo Hees retaining the chief executive post of the combined company, which had previously been disclosed, Paulo Basilio will be chief financial officer.

Meanwhile, Kraft's CFO James Kehoe—who had returned to the company less than two months after leaving it to take on a similar post at apparel company Gildan Activewear Inc.—is among those who will depart the company after the merger is complete.

Among other moves, Heinz's Michael Mullen was appointed senior vice president of corporate and government affairs and Eduardo Pelleissone was appointed senior vice president of global operations.

Meanwhile, Kraft executive Jim Savina was promoted to senior vice president, general counsel and corporate secretary; and George Zoghbi, Kraft's chief operating officer, becomes chief operating officer of the combined company's more than $19 billion U.S. commercial business.

The Kraft-Heinz merger was announced in March. The companies haven't disclosed the value of the deal, but investors have pegged it at around $49 billion.

Kraft Food Group Co. shareholders are to vote on July 1 on the proposed merger, which is subject to regulatory approval.

Write to Maria Armental at maria.armental@wsj.com and Annie Gasparro at annie.gasparro@wsj.com

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