B. Riley analyst Liam Burke raised the firm's price target on NPK International to $21 from $19 and keeps a Buy rating on the shares. NPK International reported Q1 results with revenue and EBITDA beating expectations, driven by strong demand in power transmission and execution strength, while its vertically integrated composite mat rental model and expanding fleet position it to capture long-duration infrastructure demand despite near-term margin pressure from elevated cross-rental costs, the analyst tells investors in a research note.