Grassi Expands Leadership Team

Accounting firm with Long Island presence adds new executives and promotes from within.

Mar. 30, 2026 at 4:34pm

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A minimalist studio still life photograph featuring a stack of accounting ledgers, a pen, and a calculator arranged elegantly on a clean white background, conceptually representing the core business of the expanding accounting firm Grassi.Grassi's leadership changes signal the accounting firm's commitment to growth and strengthening its presence on Long Island.Jericho Today

Grassi, an accounting firm with offices in Jericho, New York, has expanded its leadership team by appointing Brian McCuller and Gabe Shurek to new roles and promoting William Rust to a senior position.

Why it matters

The moves at Grassi reflect the firm's growth and commitment to strengthening its presence on Long Island, a key market for the company. Accounting firms often restructure leadership to better serve clients and position the business for future success.

The details

Grassi has appointed Brian McCuller as the new Chief Operating Officer and Gabe Shurek as the Chief Strategy Officer. The firm also promoted William Rust to the role of Managing Partner. These changes are intended to enhance Grassi's operational efficiency, strategic planning, and overall leadership as it continues to expand its services and client base on Long Island.

  • Grassi announced the leadership changes on March 30, 2026.

The players

Grassi

An accounting firm with offices in Jericho, New York and a strong presence on Long Island.

Brian McCuller

The new Chief Operating Officer at Grassi.

Gabe Shurek

The new Chief Strategy Officer at Grassi.

William Rust

The newly promoted Managing Partner at Grassi.

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The takeaway

Grassi's leadership changes demonstrate the firm's commitment to growth and strengthening its position on Long Island, a key market for the accounting business. The new executive roles and internal promotion aim to enhance the firm's operational efficiency, strategic planning, and overall leadership as it continues to expand its services and client base.