Isaiah Hartenstein returning to OKC Thunder on new three-year contract

The OKC Thunder agreed to a three-year, $75 million contract extension with Isaiah Hartenstein on Friday.OKC had a $28.5 million team option on Hartenstein, but it has instead signed its starting center to a long-term deal that comes with a maximum 15 percent trade kicker and a mutual option that allows both parties to rework the agreement again in 2028 prior to the final season.

ESPN’s Shams Charania first reported the deal.Hartenstein has been an instant contributor to winning since he joined OKC two seasons ago. He helped the Thunder secure its first championship in franchise history in 2025, and he played a key role in the team’s run to the 2026 Western Conference finals.

OKC has been making cost-saving moves this summer. It reduced its luxury tax penalty by $140 million by trading Aaron Wiggins to Atlanta and Isaiah Joe to Detroit for two second-round picks apiece. Now, it has spent to retain its starting center.

The Thunder still has a $17.7 million team option on Lu Dort and a $7.2 million team option on Kenrich Williams.

This article will be updated.NBA DRAFT: OKC Thunder draft picks ready 'to explore their potential' in NBA. Here's what we learned.

Justin Martinez covers the Thunder and NBA for The Oklahoman. Have a story idea for Justin? He can be reached at jmartinez@oklahoman.

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oklahoman.com.This article originally appeared on Oklahoman: Isaiah Hartenstein returning to OKC Thunder on new three-year contract