A federal judge in San Francisco has denied Elon Musk's motion to overturn a jury verdict that found him liable for securities fraud in connection with his 2022 acquisition of Twitter, leaving the billionaire on the hook for roughly $150 million in damages owed to former shareholders.
U.S. District Judge Charles Breyer issued the ruling on Sunday, rejecting Musk's post-trial bid to set aside the verdict or, in the alternative, to order a new trial. The decision caps a years-long legal fight over whether Musk illegally concealed his growing stake in Twitter before launching his takeover bid, a delay that plaintiffs argued let him buy shares at artificially low prices while ordinary investors sold too cheaply.
The case centered on Musk's purchases of Twitter stock in early 2022, months before he offered to buy the company outright for $44 billion. Under federal securities law, any investor who crosses the 5 percent ownership threshold in a public company must file a disclosure with the SEC within 10 calendar days. Musk crossed that line on March 14, 2022, but did not file the required Schedule 13D until April 4, a gap of roughly three weeks.
During that window, Musk continued buying shares. Plaintiffs argued that the delayed disclosure kept Twitter's stock price artificially low, because the market did not know a high-profile buyer was accumulating a major position. Shareholders who sold during those three weeks claimed they received less for their shares than they would have if Musk had disclosed on time.
A jury in May found Musk liable for fraud under Section 10(b) of the Securities Exchange Act and awarded approximately $150 million in damages to a certified class of former Twitter shareholders. The verdict marked one of the largest individual securities-fraud judgments tied to a disclosure violation in recent years, as the New York Post reported.
Musk's legal team moved for judgment as a matter of law under Federal Rule of Civil Procedure 50(b), arguing that the evidence at trial was insufficient to support the jury's finding of scienter, the legal term for a defendant's intent to deceive or reckless disregard for the truth. His attorneys contended that the late filing was an administrative oversight, not a deliberate scheme to manipulate the stock price.
The defense also argued that plaintiffs failed to prove loss causation, the required link between Musk's alleged fraud and the financial harm shareholders suffered. Musk's team maintained that any price movement in Twitter stock during the relevant window was driven by broader market forces and unrelated news, not by the delayed disclosure.
In the alternative, Musk sought a new trial under Rule 59, contending that certain evidentiary rulings and jury instructions were prejudicial. His lawyers pointed to the admission of testimony about Musk's general attitude toward regulatory compliance, which they characterized as inflammatory and irrelevant to the narrow disclosure question.
That legal setback follows a pattern for Musk in federal courtrooms. Earlier this year, Musk settled a separate SEC lawsuit over the same delayed Twitter stock disclosure for $1.5 million, admitting no wrongdoing in that case but paying the penalty to resolve the regulatory action.
Judge Breyer rejected each of Musk's arguments in a written order. On scienter, the judge found that the jury had sufficient evidence to conclude that Musk acted with at least reckless disregard for his disclosure obligations. Breyer pointed to trial testimony showing that Musk's own advisors had flagged the 5 percent threshold and the filing deadline before the deadline passed.
The judge noted internal communications presented at trial in which Musk's financial team discussed the approaching disclosure requirement. Breyer wrote that a reasonable jury could infer from those communications that Musk was aware of the obligation and chose not to prioritize timely compliance.
On loss causation, Breyer found that plaintiffs' expert testimony established a reasonable basis for calculating damages. The expert used an event-study methodology, a standard tool in securities litigation that isolates the stock-price impact of a specific event by controlling for market-wide movements. The judge concluded that the jury was entitled to credit that analysis over the defense's competing expert.
Breyer also declined to order a new trial, finding that the evidentiary rulings Musk challenged fell within the court's discretion and did not, individually or collectively, deprive him of a fair trial.
The ruling lands at a moment when Musk is engaged in legal battles on multiple fronts. In a separate federal proceeding, a judge dismissed Musk's xAI trade secrets case against OpenAI, calling further litigation "futile." That decision added to a string of courtroom outcomes that have not gone Musk's way.
Plaintiffs' attorneys framed the verdict as a straightforward application of disclosure rules that apply to every investor, regardless of wealth or profile. Lead class counsel Marc Gross of Pomerantz LLP said the jury's verdict "sends a clear message that the disclosure rules exist for a reason and that no one is above them."
Musk's attorney Alex Spiro pushed back, calling the verdict "fundamentally flawed" and signaling that Musk intends to appeal. Spiro told reporters that the defense believes the Ninth Circuit will view the evidence differently and that the damages figure is not supported by the trial record.
If Musk appeals to the U.S. Court of Appeals for the Ninth Circuit, the appellate panel would review Judge Breyer's legal rulings de novo, meaning from scratch, while giving substantial deference to the jury's factual findings. Overturning a jury verdict on appeal is a steep climb. The appellant must show that no reasonable jury could have reached the same conclusion on the evidence presented, or that a legal error at trial was both wrong and prejudicial.
Musk's strongest appellate argument may center on the scienter question. Securities-fraud cases under Section 10(b) require proof of a "strong inference" of intent to deceive, a standard the Supreme Court tightened in its 2007 decision in Tellabs v. Makor Issues & Rights. The defense is expected to argue that a late filing, even a knowing one, does not automatically satisfy that heightened intent requirement.
The damages calculation could also face scrutiny. Event-study models are widely accepted in securities litigation, but appellate courts have occasionally found that a particular expert's methodology was unreliable or that the study failed to isolate the fraud-related price impact from other market noise. Musk's team previewed this line of attack during post-trial briefing.
Musk has been no stranger to the witness stand in recent months. He testified in a separate federal trial accusing OpenAI of abandoning its nonprofit mission, a case that put his credibility and business judgment under direct examination.
The certified class includes all persons and entities that sold Twitter common stock between March 25 and April 1, 2022, the period after Musk's disclosure was due but before it was actually filed. The class excludes Musk, his affiliates, and Twitter's officers and directors during the relevant period.
The $150 million damages figure represents the aggregate loss the jury attributed to the class. Individual payouts will depend on how many shares each class member sold during the window and at what price. Distribution will not begin until all post-trial motions and any appeal are resolved, a process that could stretch well into 2027 or beyond if the Ninth Circuit takes the case.
No bond amount has been set yet for any appeal. Plaintiffs may seek to require Musk to post a supersedeas bond covering the full judgment plus interest, which would ensure the money is available if the verdict survives appellate review. Given Musk's net worth, the bond requirement is unlikely to pose a practical obstacle, but the procedural step remains part of the appellate timeline.
The case has drawn attention from securities-law scholars and market regulators because it tests how aggressively courts will enforce the Schedule 13D filing deadline. The 10-day window was established decades ago, and critics have long argued it is too generous in an era of electronic trading where large positions can be assembled in hours. The SEC proposed shortening the deadline to five business days in 2023, but that rulemaking remains pending.
Supporters of stricter enforcement argue that delayed disclosure allows wealthy buyers to accumulate shares at prices that do not reflect the true demand, effectively transferring value from selling shareholders to the buyer. That is precisely what the jury found happened here.
Defenders of Musk's position counter that the late filing caused no real harm because the stock price rose sharply once the disclosure was made, and that the damages model overstates the price impact by assuming the market would have reacted instantly and fully to an on-time filing. That debate will likely continue on appeal.
The outcome also intersects with broader questions about how courts handle high-profile defendants. In a related proceeding, Sam Altman took the witness stand as Musk's lawyers challenged his credibility in the OpenAI trial, a reminder that these courtroom fights often pit powerful figures against each other with billions at stake.
Musk's team has 30 days from the entry of Judge Breyer's order to file a notice of appeal with the Ninth Circuit. Briefing in the appellate court typically takes several months, and oral argument, if granted, would likely not occur until 2027. The Ninth Circuit's securities-law docket is active, and the panel assigned to the case could shape how disclosure violations are treated across the western United States.
For now, the $150 million verdict stands. The ruling reinforces a principle that conservative legal thinkers have long endorsed: markets work best when the rules apply equally, and courts exist to hold participants accountable when they do not follow them.
Disclosure laws are not bureaucratic busywork. They are the guardrails that keep capital markets honest, and a jury of ordinary citizens just reminded one of the world's richest men that the guardrails apply to him, too.
