The Securities and Exchange Commission filed an insider trading lawsuit in connection with the recent purchase of U.S. underwater oil services company Global Industries Limited by France’s Technip SA.

One or more unnamed defendants bought 685,840 Global Industries shares on the two trading days immediately before Technip said on September 12 that it would buy the company for $937 million, or $8 per share, a 55 percent premium, the SEC said.

These defendants then realized $1.73 million of illegal profit by selling all their shares, the complaint filed late Friday in the U.S. District Court in Manhattan shows.

According to the SEC, the purchases were made through an account in the name of Austria’s Raiffeisen Bank International AG (RBIV.VI) held at broker-dealer Brown Brothers Harriman & Co.

It said the purchases accounted for about 10 percent of Global Industries’ daily trading volume, though there was no major public news about the Carlyss.,Louisiana-based company.

This “suggests that the information was obtained as a result of breaches of fiduciary duty,” the SEC said.

The complaint seeks to force the defendants to give up their illegal profit and pay civil fines.

Raiffeisen had no immediate comment on the lawsuit. Brown Brothers Harriman and Global Industries did not immediately respond to requests for comment.