People: Steve N. Economou has joined New York City-based Grassi & Co. as a principal in the firm’s Forensic, Litigation and Valuation Services group; he will primarily oversee business valuations and provide transaction advisory services … Brittany Dela Rosa, CPA, CA, CBV, has been named a partner at Calgary-based MNP; she is a member of MNP’s Valuations and Litigation Support Services team and prepares business valuations for a variety of purposes, including tax planning, corporate reorganizations, matrimonial and estate proceedings, and shareholder disputes … Rishi Aswani, CFA, has joined Houlihan Lokey in the firm’s Financial and Valuation Advisory (FVA) business in Mumbai as a managing director in the Portfolio Valuation and Fund Advisory Services practice; he joins from Duff & Phelps in Mumbai.

Firms: Los Angeles-based B. Riley Financial Inc. celebrates its 25th anniversary; starting as a research boutique, the firm added investment banking, appraisal, liquidation, restructuring, forensic accounting, venture capital, lending, merchant banking, and other financial services … Farmington Hills, Mich.-based UHY LLP is adding Stoy, Malone & Co. PC of Towson, Md., which provides a broad range of accounting services to individuals, businesses, business owners, and nonprofit organizations … Winchester, Va.-based YHB CPAs and Consultants is adding Owings Mills, Md.-based Glass Jacobson PA, with its six principals and 54 staff members; the firm provides tax, audit, and consulting services to clients throughout the greater Washington, D.C., metro area … Boston-based WilliamsMarston LLC has acquired tax consulting firm Moffett & Associates of El Segundo, Calif.; earlier this year WilliamsMarston acquired Bay Valuation Advisors, a firm with 24 professionals and offices in California, Massachusetts, New Jersey, and Colorado … Calgary-based MNP is adding Jean Luc Quenneville CPA of Laval, Québec, which has a team of five professionals … Toronto, Ontario-based firms Segal LLP and GCSE LLP are joining forces under the new name of Segal GCSE LLP; Segal provides audit, accounting, tax, and advisory services to a wide range of clients, while GCSE offers accounting, tax, and advisory experience and has long been the go-to Canadian firm for the legal industry … New York City-based Marcum LLP is adding LTSP Inc. of Newport Beach, Calif., which provides accounting and advisory services to closely held businesses and high-net-worth individuals; three partners and 19 associates from LTSP will join Marcum in its new Newport Beach office … Kroll has acquired Crisp, a real-time risk intelligence company that protects brands, assets, and people from reputational damage, security threats, and online harm.

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