Bleichmar Fonti & Auld LLP, also known as BFA Law, is investigating whether Cardinal Infrastructure Group, Inc. (NASDAQ:CDNL) misled investors about the performance of its A.L. Grading Contractors acquisition. Cardinal, a heavy construction infrastructure services company that went public in December 2025 and expanded through acquisitions, reported Q2 2026 results on Aug. 11, 2026. Although revenue increased year over year, its adjusted EBITDA margin was 12.4%, below the 20%+ margin investors had been told to expect, amid increased costs and scalability issues at least partially related to A.L. Grading Contractors. Cardinal shares fell $21.73, or more than 36%, from $60.00 at the Aug. 10 close to $38.27 on Aug. 11. Investors are encouraged to contact BFA about their rights and may submit information through the firm's case website. Representation is on a contingency fee basis, with no cost to investors, who are not responsible for court costs or litigation expenses; any fees and expenses would require court approval.