Goldman Sachs President and Chief Operating Officer John Waldron has sold 18,244 shares in the bank, according to a regulatory filing.

The sale is valued at approximately $13.6 million, based on Goldman’s closing price of $745.25 per share. Waldron, who is viewed as a leading contender to succeed CEO David Solomon, still holds approximately 300,000 shares in the company, according to filings.

Both Solomon and Waldron were awarded share retention bonuses worth $80 million earlier this year.

Waldron, who joined Goldman in 2000, became co-head of investment banking in 2014 before being promoted to president and COO in 2018. He also joined the bank’s board in February. In his current role, he oversees Goldman’s three main business divisions.