Investors who bought Tigo Energy securities between February 24, 2026 and August 4, 2026 may be covered by a proposed class action alleging Tigo Energy told investors its EG4 inverter partnership would add revenue in mid-2026 when the launch had been delayed. No class has been certified and there is nothing to file yet.
Allegations Only · No Settlement Yet
This article describes a class action complaint. The statements below are unproven allegations. Tigo Energy, Inc. and the individual defendants have not been found liable, there is no certified class, and nothing to claim at this time. This page is informational and is not legal advice.
What Is the Tigo Energy Lawsuit About?
Shim v. Tigo Energy, No. 5:26-cv-10888, was filed September 24, 2026 in the U.S. District Court for the Northern District of California. Tigo Energy, based in Los Gatos, California, sells solar and energy storage products and earns most of its income from module-level power electronics, small devices that attach to solar panels to raise each panel’s output. Its common stock trades on the Nasdaq as TYGO.The complaint alleges that Tigo told investors its partnership with EG4 Electronics would start contributing revenue in the second quarter of 2026 and built its 2026 revenue guidance on that timeline, while the partnership had in fact been delayed. The case follows a sharp drop in the stock after Tigo cut its 2026 guidance in August. No court has ruled on any of the allegations.
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What the Complaint Says Investors Were Told
Tigo announced its manufacturing and marketing partnership with EG4 Electronics on August 25, 2025, to produce Tigo-optimized inverters and module-level power electronics together with EG4’s inverters. The complaint challenges two later statements:- February 24, 2026: On Tigo’s fourth-quarter 2025 earnings call, the chief financial officer told an analyst that initial EG4 deliveries would begin in May, with some benefit in the second quarter and a full benefit beginning in the third quarter. The complaint alleges the partnership was not on track to deliver either.
- May 5, 2026: Tigo’s first-quarter release projected 2026 revenue of $130 million to $135 million and second-quarter revenue of $30 million to $32 million. The complaint alleges those projections depended on the EG4 launch, that the partnership would not produce material revenue until the fourth quarter of 2026 at the earliest, and that the projections therefore had no reasonable basis.
The August 2026 Disclosure and Stock Drop
After the market closed on August 4, 2026, Tigo reported second-quarter revenue of $25.4 million, below its $30 million to $32 million guidance, and lowered its full-year 2026 revenue outlook from $130 million to $135 million to $100 million to $110 million. As quoted in the complaint, the chief financial officer attributed the revision in part to its U.S. optimized inverter partner shifting its launch to the fourth quarter, which the complaint identifies as EG4. On the earnings call that day, the chief executive said the earlier guidance had relied predominantly on the EG4 partnership and that the delays would leave the company roughly flat with the prior year.The complaint says the stock fell from $2.04 on August 4 to $1.29 on August 5, 2026, a drop of about 37%.
Claims and Who Is in the Proposed Class
The complaint claims violations of Section 10(b) of the Securities Exchange Act of 1934 and SEC Rule 10b-5, and controlling-person liability under Section 20(a). The defendants are Tigo Energy, Inc., its chief executive officer and board chair Zvi Alon, and its chief financial officer Bill Roeschlein. The proposed class is everyone who purchased or otherwise acquired publicly traded Tigo securities between February 24, 2026 and August 4, 2026, inclusive. A court has not certified the class.What Happens Next
Under the Private Securities Litigation Reform Act, investors who want to be appointed lead plaintiff must ask the court by November 23, 2026. The court then picks a lead plaintiff and lead counsel, a consolidated or amended complaint usually follows, and defendants in securities cases commonly move to dismiss, which pauses discovery while the motion is pending.There is nothing to claim in the Tigo Energy case now. If it settles, investors in the settlement class would normally receive a notice and a claim form that asks for their trading records. Other solar and energy storage companies facing investor suits include Fluence Energy and First Solar.
Questions
Is there a Tigo Energy settlement?
There is no settlement. Shim v. Tigo Energy, No. 5:26-cv-10888, was filed September 24, 2026 in the U.S. District Court for the Northern District of California and is at the complaint stage. No class has been certified and there is nothing to claim.
Who is covered by the Tigo Energy securities lawsuit?
The proposed class is investors who purchased or otherwise acquired publicly traded Tigo Energy, Inc. securities between February 24, 2026 and August 4, 2026, inclusive. Tigo’s common stock trades on the Nasdaq as TYGO. A court has not certified the class.
What is the lead plaintiff deadline in the Tigo Energy case?
November 23, 2026. Under the Private Securities Litigation Reform Act, investors who want to be appointed lead plaintiff must ask the court by that date. The court generally presumes the movant with the largest financial interest is the most adequate plaintiff. Class members do not need to seek that role to remain part of the proposed class.
What is the EG4 partnership at the center of the Tigo case?
Tigo announced a manufacturing and marketing partnership with EG4 Electronics, a solar equipment maker, on August 25, 2025, to produce Tigo-optimized inverters and module-level power electronics together with EG4 inverters. The complaint alleges Tigo told investors the partnership would begin contributing revenue in mid-2026 when its launch had in fact been delayed.
