NextDecade Corp emerged as a public company through a business combination with Harmony Merger Corp, the blank-check vehicle that traded on Nasdaq under the ticker HRMN. Harmony Merger Corp priced its initial public offering in 2016, targeting the energy sector, and completed its merger with NextDecade — a developer focused on liquefied natural gas infrastructure — the following year. The company filed an 8-K with the Securities and Exchange Commission on June 5, 2025, reflecting its continuing public reporting obligations as a post-combination energy company anchored by its Rio Grande LNG export project on the Texas Gulf Coast. For full filing history, deal analytics, and sponsor data on this and hundreds of other SPAC transactions, sign up for SpacDesk.