Bank Regulatory Counsel in 2026: Leans on Banks, Rare on Bank Deals

A general counsel comparing bank regulatory law firms is buying from a practice that depends on banks far more than banks depend on it. Sartori & Partners data show 237 dated deals and matters with financial services regulatory lawyers in the 12 months to October 2026, and banks and financial institutions were on 122 of them, 51.5%, or just over half. Turn the record around and those same 122 deals are 3.6% of the 3,433 bank and financial institution deals on file. This report reads that gap from the bank's chair: what the regulatory practice does, how fast each side of the work is moving, and which firms appear on each adviser list.

The financial services regulatory practice draws on a narrow client base. Banks and financial institutions appear on 51.5% of its deals, digital assets and crypto businesses on 16.0% and fintech and payments companies on 12.2%. One deal can carry several sectors and many carry none, so each share is read on its own and never added to the others. Across the whole deal record, banks appear on 7.1% of dated deals: regulatory lawyers work with banks 7.3 times as often as the market does.

Digital assets appear on 0.6% of all dated deals and fintech on 1.0%, so the practice is tilted toward newer finance as well as toward banks. For a bank, the point is simpler. The regulatory partners it hires work mainly for institutions like it, which makes a bank client a core account rather than a side line. Use that weight: ask for a named partner, a stable team, and a clear answer on whether the same people also act for the crypto and payments businesses that compete with you.

The weights reverse once the bank's whole deal book is in view. Sartori & Partners recorded 3,433 bank and financial institution deals in 12 months, and financial services regulatory lawyers worked on 122 of them, 3.6%. The shape of bank work explains the small figure. Capital markets deals were 48.8% of the sector's deals, disputes and investigations 14.6% and M&A 11.6%. Capital markets lawyers were on 51.0% of bank deals and banking and finance lawyers on 15.8%; one deal can carry several practices, so these shares overlap and are not a split of the work.

The same 122 deals sit behind both readings: 51.5% of the regulatory practice, 3.6% of bank work. For a general counsel that means bank deal volume says little about who can handle a supervisory problem. A firm that appears on many bank capital markets deals tells you about its deal team, not its regulatory bench. Ask for the regulatory partners by name, separately from the people who run your transactions.

Much of what this practice does is contested. Disputes and investigations were 42.6% of financial services regulatory deals, against 25.0% of all dated deals and 14.6% of bank deals. Regulatory and antitrust work added 21.1% of the practice's deals, against 0.4% across the record. Many disputes enter from public court records, so these counts are matters on file, not fees or revenue.

Money figures are scarce on this side of the work. The practice disclosed a value on only 2.5% of its deals, too few to publish a median. Bank deals carry a disclosed value on 24.1%, with a median of US$660 million, but that median covers every kind of bank deal and says nothing about regulatory files. A bank cannot size a regulatory mandate from deal values. Budget it by phase, and agree in the engagement letter who staffs an investigation if one opens.

On settled 12-month windows ending September 2026, financial services regulatory deals rose 37.3%, from 169 to 232. Bank and financial institution deals rose 7.2% over the same windows, from 3,224 to 3,457, and all dated deals rose 10.6%, from 43,590 to 48,216. Regulatory work therefore grew 5.2 times as fast as bank deal work.

Work and hiring rose together: in the Sartori & Partners lateral database, partners joining another firm in financial services regulatory practice rose 40.2%, 115 in the settled 12 months against 82 a year earlier. For a bank, the reading is narrow: regulatory matters rose faster than bank deals. Before you appoint, ask each firm how many live matters the proposed partner carries.

The two firm lists measure different things. The first ranks firms by financial services regulatory deals for all clients, banks or not; Troutman Pepper Locke heads it, in the 11-20 band of deals advised. The second ranks firms on all bank and financial institution deals of any kind, regulatory or not; Davis Polk & Wardwell heads it, in the 151-250 band. No firm list exists for regulatory work done for banks alone.

Three firms sit on both lists: Sidley Austin, Davis Polk & Wardwell and Jones Day. The bands show the difference in scale: the regulatory list starts at the 11-20 band, while the tenth firm on the bank list sits in the 61-100 band. The lists show deal volume, not capability. Use the overlap to open a panel review, and ask each firm which regulatory partners worked on bank matters in the past year.

Treat regulatory counsel as its own appointment. Banks are on 51.5% of the regulatory practice's deals, so a bank client carries weight with that team. Regulatory lawyers are on 3.6% of bank deals, so the firm running your capital markets or M&A work may not field them on the same matter. Put both questions to every panel firm: who runs the deal, and who answers the regulator.

Expect contested work, and hire for it. With disputes and investigations at 42.6% of the practice's deals, the partner you choose should be able to run an investigation as well as give advice. Look where the agencies are: 13.7% of the sector's deals were handled with lawyers in Washington, DC. Regulatory deals rose 37.3% while bank deals rose 7.2%, so put one more question to each firm: how many live matters does the proposed partner carry today?