Kaplan Fox & Kilsheimer LLP announced on September 18, 2026, that a class action lawsuit had been filed against Hyliion Holdings Corp. on behalf of investors who purchased or otherwise acquired Hyliion securities from May 12 through June 23, 2026. The complaint alleges that Hyliion and other defendants made false or misleading statements about a letter of intent with VFG Holdings LLC to provide power modules for data center applications. Hyliion shares rose from $2.68 on May 12 to $4.67 on May 15, according to the notice. On June 23, Pelican Way Research alleged that the agreement was a sham because VFG Holdings, or legally VFG Tech Holdings, LLC, appeared to lack substance. Hyliion shares fell $1.27, or 17.2%, that day and another $1.18, or 19.3%, on June 24, closing at $4.92. Investors with losses may contact Kaplan Fox, while the deadline to seek lead-plaintiff status is October 27, 2026. Investors do not need to become lead plaintiff to participate in any possible recovery.