Cardinal Infrastructure Investigation Overview
BFA is investigating whether Cardinal Infrastructure Group, Inc. committed securities fraud by misleading investors about the performance of A.L. Grading Contractors. Investors may be able to file a class action to potentially recover losses.
If you lost money on your Cardinal Infrastructure investment, you are encouraged to submit your information using the form on this page. You may also email adam@bfalaw.com or call 212.789.3619.
Why is Cardinal Infrastructure being investigated for Securities Fraud?
Cardinal Infrastructure is being investigated for securities fraud following a significant stock drop. The decline in Cardinal Infrastructure’s stock price caused significant losses to investors.
Cardinal Infrastructure is a heavy construction infrastructure services company that went public in December 2025 and has grown through acquisitions.
BFA is investigating whether Cardinal misled investors about the performance of one of its acquired business named A.L. Grading Contractors.
Why did Cardinal Infrastructure’s Stock Drop?
On August 11, 2026, Cardinal reported Q2 2026 results. Although revenues increased year over year, the company reported adjusted EBITDA margin of only 12.4%, far below the 20%+ margin it had told investors to expect, due to increased costs and scalability issues at least partially related to ALGC.
This news caused the price of Cardinal Infrastructure stock to drop $21.73 per share, or over 36%, from a closing price of $60.00 per share on August 10, 2026, to $38.27 per share on August 11, 2026.
Cardinal Infrastructure Group ($CDNL) Stock Chart

Image Caption: NASDAQ stock chart showing Cardinal Infrastructure’s stock drop following the August 11, 2026 disclosure.
How Do I Submit My Information?
If you lost money when Cardinal Infrastructure securities dropped in price, you are encouraged to submit your information using the form on this page to speak with an attorney about your rights.
You can also contact:
Adam McCall
adam@bfalaw.com
212.789.3619
All representation is on a contingency fee basis; there is no cost to you. Shareholders are not responsible for any court costs or expenses of the class action lawsuit. The firm will seek court approval for any potential fees and expenses.
Why Bleichmar Fonti & Auld LLP?
BFA is a leading international law firm representing plaintiffs in securities class actions and shareholder litigation. It has been named a top plaintiff law firm by Chambers USA, The Legal 500, and ISS SCAS.
BFA attorneys have been named “Elite Trial Lawyers” by the National Law Journal, “Litigation Stars” by Benchmark Litigation, among the top “500 Leading Plaintiff Financial Lawyers” by Lawdragon, “Titans of the Plaintiffs’ Bar” by Law360, and “SuperLawyers” by Thomson Reuters.
Most recently, The Legal 500 awarded BFA the most client satisfaction accolades of any plaintiff’s securities litigation law firm, with clients noting: “[t]here is no better service provider in the practice area,” “[t]he interest of the client is always front and center,” and “[t]here isn’t a better firm in this space.” One testimonial described the firm as “nimble and entrepreneurial,” with a “relentless focus on adding value for clients.”
Among its recent notable successes, BFA recovered over $900 million in value from Tesla, Inc.’s Board of Directors, as well as $420 million from Teva Pharmaceutical Ind. Ltd.
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