Allen & Overy partner Heath Tarbert, who led the firm's U.S. bank regulatory team from Washington, was confirmed Wednesday to a top post at the U.S. Treasury Department.

The Trump administration in April picked Tarbert for assistant secretary overseeing international markets and development. The Senate voted 87-8 to confirm Tarbert.

Tarbert is leaving Allen & Overy, one of the largest firms based in the U.K., at a time the firm is posting record numbers for several key metrics, including profit per equity partner. Profits per equity partner at the firm last year were about £1.5 million, or roughly $2.05 million. Tarbert's financial disclosure said his partner compensation was £860,000, which he converted to U.S. dollars.

Diego M. Radzinschi/ ALM Media

Tarbert said he expects to receive a refund of his Allen & Overy capital account—he placed the value at between $250,000 and $500,000—calculated as of the date of his withdrawal and under the partnership agreement. Tarbert also said he anticipated receiving between $500,000 and $1 million in his final partnership share.

Tarbert's financial disclosure shows he provided legal services last year to major financial institutions, including JPMorgan Chase & Co., Goldman Sachs Group Inc., Bank of America Corp., Citigroup Inc., HSBC Holdings, Royal Bank of Scotland Group and Morgan Stanley & Co. The disclosure also reveals Tarbert provided legal services to J. Christopher Giancarlo, who was then a member of the U.S. Commodity Futures Trading Commission. Giancarlo was confirmed in August as chairman of the agency. Tarbert's disclosure did not reveal what work he did for Giancarlo.

“We are proud that one of our partners has been asked to assume such an important international position at the Treasury Department,” Barbara Stettner, managing partner of the Washington office, said in a statement. “We encourage public service in our firm and have had numerous colleagues take on key positions in government over the years.”

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At Treasury, Tarbert will be responsible for operating the unit that reviews investment by foreign companies in the U.S. for national security risks, the Committee on Foreign Investment in the United States, and for representing the U.S. at the Financial Stability Board and G20 working groups on regulatory policies and coordination. He will also be responsible for developing positions at the World Bank and other multilateral development banks.

In his ethics agreement with the Treasury Department, Tarbert said he would withdraw from the partnership of Allen & Overy upon his confirmation. He also said he would resign from positions with Harvard Law School; the Bloomberg BNA Banking Report; the Review of Banking & Financial Services; the Review of Securities & Commodities Regulation and The Banking Law Journal, and not participate in any matter involving them for a year after his resignation unless he was first authorized to participate.

Until he receives all the amounts due, Tarbert said he would not participate in any matter “that to my knowledge has a direct and predictable effect on the willingness of the firm to pay amounts owed me until I first receive a written waiver,” or participate in any matters in which the firm is a part, “unless I am first authorized to participate.”

Tarbert said he is also owed a $5,849 refund of his partner capital account with a former firm, Weil, Gotshal & Manges, and also wouldn't participate in any matter concerning that firm unless he obtained a written waiver first.

Chief Global Correspondent Chris Johnson contributed to this report.