Government filings of Donald Trump’s pick for secretary of state Rex Tillerson show that he has up to half a billion dollars worth of assets distributed across an array of investments.
Tillerson’s interests at Exxon Mobil (xom)—where he was Chairman and CEO until Jan 1—constitute around $300 million of his asset base, the Wall Street Journal reports. A financial disclosure form released by the Office of Government Ethics on Wednesday detailed further assets worth between $50 million and $200 million.
Details on the magnitude of Tillerson’s holdings come at a time of heightened attention on potential conflicts of interest among members of Trump’s incoming cabinet. The ties between Russian President Vladimir Putin and the former-Exxon chief, in particular, have ruffled lawmaker feathers on both sides of the aisle.
Tillerson reportedly mooted strategies for avoiding conflicts of interest in a 9-page letter that accompanied his 38-page financial disclosure. However, scrutiny of his Russia related assets—and his plans for their divestment—is likely to intensify when he appears for Senate confirmation hearings next Wednesday and Thursday.
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According to his disclosure, WSJ reports, Tillerson investments outside of Exxon include shares in the company’s Big Oil rivals Chevron (cvx), Royal Dutch Shell (rds-a), and Total (tot), as well as in blue-chip stocks such as Apple (aapl) and J.P. Morgan Chase @(jpm).
On Thursday, The Associated Press reported that Tillerson is set to receive a $180 million retirement package from Exxon if he is confirmed as Trump’s secretary of state—that’s equivalent to the value of the over 2 million deferred shares he would have received over the next 10 years.