Michael Stamp and Marcus Plank stood in a Manhattan courtroom on August 4 and said two words: not guilty. If that sounds like breaking news, it isn’t. A not-guilty plea at arraignment is closer to a formality than a declaration of innocence, and everyone in that courtroom already knew it. The more interesting story wasn’t spoken out loud. It was sitting in the court file, written down before either man ever walked in.
The Auto Wire covered the underlying case last month: two Volkswagen engineers on temporary assignment from Germany, working out of San Jose, allegedly used confidential details of a joint venture between Volkswagen and Rivian Automotive to trade Rivian stock and options before the deal became public in June 2024. Volkswagen, which had already become Rivian’s largest shareholder the year before, announced the multibillion-dollar partnership that June, and Rivian shares jumped 23% in a single day. According to the U.S. Attorney’s Office for the Southern District of New York, Stamp walked away with roughly $250,000 in profit, Plank with about $50,000, and a close family member of Plank’s picked up another $12,000 riding the same information. Both men were indicted, arrested, and, on August 4, formally arraigned before U.S. District Judge Katherine Polk Failla. Both pleaded not guilty.
That’s the update. Here’s what it actually reveals.
A not-guilty plea at arraignment isn’t a claim of innocence so much as a procedural reflex. It preserves a defendant’s rights, starts the discovery clock, and buys time to negotiate. It says nothing about what either man believes happened in the spring of 2024. In federal court, “not guilty” doesn’t mean innocent. It means not yet.
Ten days before either man said a word in that courtroom, Judge Failla had already signed an order scheduling the arraignment and, in the same order, excluded that stretch of time from the Speedy Trial Act clock. Her stated reason, taken directly from the docket, was to “permit the parties to discuss a potential pretrial resolution in this matter.” Translated out of legal language: the court had already cleared room for a plea negotiation before either man had pleaded anything at all. That’s not unusual in a federal white-collar case. It is, however, the detail that gets lost every time a headline says “pleaded not guilty” and stops there. The plea entered on the record and the negotiation happening quietly around it aren’t in conflict. They’re running on separate tracks toward what is very often the same station.
The more revealing consequence of this hearing isn’t the plea. It’s what happens to Stamp and Plank between now and whatever comes next, and neither man spent a single night in a cell over it. Both walked out of the Thurgood Marshall Courthouse on personal recognizance bonds of $500,000 each, a fraction of which is secured by cash and property put up by family members the court’s own paperwork calls “Financially Responsible Persons.” Plank’s bail package goes a step further: his wife had to sign the bond herself, not strictly as a financial backstop, but, in the docket’s own language, “for moral suasion.” That’s a real term of art in federal pretrial practice, and it means the government is leaning on family obligation, not a jail cell, to keep a defendant showing up to court.
Both men surrendered their passports. In Plank’s case, so did his wife and children, none of whom are charged with anything. Travel for both defendants is now restricted to a narrow corridor covering the Southern and Eastern Districts of New York, the Northern District of California, and New Jersey, which is, not coincidentally, roughly the flight path between a Bay Area office and a Manhattan courtroom. Stamp and Plank are also barred from contacting each other outside the presence of counsel, a condition that quietly endorses the government’s underlying theory: this was a partnership, not two unrelated bets.
There’s a second detail worth understanding, because it will keep resurfacing as more of these cross-border corporate partnerships produce their own federal cases. Stamp and Plank live and work in San Jose. They were arrested there and made their first appearance before a magistrate judge in the Northern District of California days before either man ever saw a New York courtroom. But the case itself was never going to be tried in California. Under the federal rules governing out-of-district arrests, a defendant picked up outside the district where charges are filed gets a brief local hearing, then gets transferred to the district actually prosecuting the case. For securities fraud, that district is almost always the Southern District of New York, home to the exchanges the shares trade through and the U.S. Attorney’s Securities and Commodities Fraud Task Force. Neither Stamp nor Plank has ever worked a day on Wall Street. It didn’t matter. The stock moved on a U.S. exchange, and that alone was enough to land the case in Manhattan.
None of this means Stamp and Plank are guilty of anything, and nothing here predicts how a jury, if this ever reaches one, would rule. What it means is that the two words making headlines last week tell you almost nothing about where this case is actually headed. The court’s own paperwork, filed before those words were even spoken, already points toward a negotiated resolution on a clock the judge quietly set in advance.
A not-guilty plea isn’t a verdict. It’s a scheduling device. The passports sitting in a pretrial services file, the wife’s signature backing a bond, and the travel corridor stretched between Silicon Valley and Foley Square: that’s the sentence already being served, months before any trial that, statistically, will probably never happen.