BDO adds Biegel Waller; Brown Edwards expands in Virginia; Prager Metis combines with Shine & Company; Hoffman Eells merges with Abbott, Frenyea & Russell; and Mariner Wealth Advisors acquires the tax practices of David G. Miller & Associates and G.M. Bremer & Associates.

WithumSmith+Brown combined with KSJG CPA LLP; Wipfli LLP added Stratagem; and McHale, Caruso, Scullion & Knox joined CliftonLarsonAllen LLP.

The Top 100 Firm is merging Keelsra Business Services into its Springfield office.

The deal expands the Top 100 Firm's presence in North Carolina.

The Top 100 Firm is growing its tax group by bringing on Thrasher & Associates.

The Top 100 Firm is acquiring Alexandria, Virginia-based Halt, Buzas & Powell.

The Top 100 Firm is expanding its presence in Houston with the M&A deal.

The Top 25 Firm has merged in Mejia & Kaplan, which specializes in serving entertainers and performing artist clients.

Mergers take numerous forms.

The total amount of goodwill impairment recorded by U.S. public companies reached $78.9 billion in 2018, up a staggering 125 percent from the prior year, according to a new report.