Robbins LLP announced on November 9, 2026, that a securities class action lawsuit has been filed on behalf of investors who purchased or otherwise acquired Tigo Energy (NASDAQ:TYGO) securities between February 24, 2026 and August 4, 2026.

Key Highlights

  • Class period: The lawsuit covers investors who purchased Tigo Energy securities between February 24, 2026 and August 4, 2026, inclusive.
  • Core allegation: The complaint alleges that Tigo defendants overstated the near-term revenue contribution expected from the company's EG4 Electronics partnership.
  • Missed guidance: Tigo reported Q2 2026 revenue of $25.4 million, below its prior guidance of $30-$32 million, according to the filing.
  • Full-year guidance cut: Tigo revised its full-year 2026 revenue guidance from $130-$135 million to $100-$110 million, a midpoint reduction of approximately 20.8%.
  • Stock decline: Tigo's stock price fell from $2.04 on August 4 to $1.29 per share on August 5, a drop of approximately 37%, according to the complaint.
  • Lead plaintiff deadline: Investors who suffered significant losses must contact Robbins LLP before November 23, 2026.

Securities Lawsuit Against Tigo Energy Centers on EG4 Partnership Revenue Projections

According to the announcement from Robbins LLP, the class action complaint alleges that Tigo Energy made materially false and/or misleading statements related to its manufacturing and marketing partnership with EG4 Electronics, announced on August 25, 2025. The partnership was described in Tigo's press release as intended to "produce Tigo optimized inverters and Module Level Power Electronics (MLPE) together with EG4 solar inverters." The complaint alleges that revenue projections issued by Tigo were based on expected contributions from this partnership that would not, in fact, materialize on the stated timeline.

On May 5, 2026, the filing states, Tigo issued its first-quarter 2026 financial results and projected full-year 2026 revenue of $130-$135 million, along with Q2 2026 revenue guidance of $30-$32 million. The complaint alleges these projections lacked a reasonable basis because, according to the filing, "the EG4 partnership would not provide material revenue until Q4 2026 at the earliest." When Tigo reported actual Q2 2026 results on August 4, 2026, revenue came in at $25.4 million, below the guided range.

The filing quotes Tigo's CFO as stating that "[t]he revision to our full-year 2026 outlook reflects our U.S. optimized inverter partner's shift of its go-to-market launch to the fourth quarter, the slower ramp of our new GO Battery, and a more gradual recovery in Europe." Robbins LLP identifies the "optimized inverter partner" referenced in that statement as EG4. The firm represents investors on a contingency fee basis and notes that serving as lead plaintiff is not required to share in any potential recovery.

What Was Disclosed

Robbins LLP disclosed the filing of a securities class action against Tigo Energy alleging overstated revenue projections tied to the EG4 partnership, covering investors who purchased NASDAQ:TYGO securities between February 24, 2026 and August 4, 2026, with a lead plaintiff deadline of November 23, 2026.