A partner at the McKinsey consulting firm was criminally charged on Wednesday with insider trading ahead of Goldman Sachs Group Inc’s agreement to buy fintech lender GreenSky Inc for $2.24 billion, U.S. prosecutors said on Wednesday.

Puneet Dikshit, 40, of Manhattan, faces two securities fraud counts after allegedly generating about $450,000 of profit from 2,500 GreenSky call options that he bought in the two days before the merger was announced on Sept. 15.

Authorities said Dikshit led McKinsey’s unsecured lending practice in North America and had been a lead partner advising Goldman. Related civil charges were filed by the U.S. Securities and Exchange Commission.

Lawyers for Dikshit did not immediately respond to requests for comment following the defendant’s arrest on Wednesday.

McKinsey said it has fired Dikshit for “a gross violation of our policies and code of conduct. We have zero tolerance for the appalling behavior described in the complaint and we will continue cooperating with the authorities.”

GreenSky, a specialty lender, arranges consumer loans to large purchases such as home renovations and cosmetic surgery.

Its share price rose 53% the day of the announcement. It was volatile on the three previous trading days, when options trading had been particularly busy.

Prosecutors said Dikshit bought his call options, a bet the stock price would rise, without receiving pre-clearance from McKinsey, and sold them shortly after the merger was announced.

They also said that following media reports of suspicious trading in the options, Dikshit sought permission to trade in GreenSky, and was denied.

Goldman wasn’t charged or accused of wrongdoing.

The charges were announced nine years after former McKinsey chief and Goldman director Rajat Gupta was convicted of insider trading for passing tips about the bank, including a pending investment from Warren Buffett’s Berkshire Hathaway Inc .

Prosecutors said Dikshit ran Google searches related to Gupta’s conviction about three weeks after Goldman agreed to buy GreenSky.

The cases are U.S. v. Dikshit, U.S. District Court, Southern District of New York, No. 21 mag-10772; and SEC v Dikshit in the same court, No. 21-09289