SG Blocks, INC.: management transactions · United States · SEC (Form 4)

About SG Blocks, INC.

SG Blocks, Inc., now operating under the corporate name Safe & Green Holdings Corp. and trading on the NASDAQ under ticker SGBX, is a U.S.-based small-cap company focused on modular construction and prefabricated building solutions. The company is organized in the United States, with its corporate headquarters in Jacksonville, Florida, while SEC filings also reference a business address in Brooklyn, New York. Founded in 2007, SG Blocks was built around the idea of converting shipping containers into code-engineered building modules, positioning itself early as a sustainability-oriented construction platform. Its business model centers on the design, engineering, fabrication, and, in some cases, on-site delivery of modular structures for residential and commercial applications. The company offers several product and service layers: container-based structural cores and shells, partially finished prefabricated modules, and more complete ready-to-occupy buildings. Through SG Echo, it also produces wood-framed prefabricated modules, which broadens the platform beyond steel container conversion. Historically, the company has targeted single-family and multifamily housing, restaurants and quick-service restaurants, military installations, education, healthcare, office/commercial buildings, and certain industrial applications. Management consistently emphasizes speed-to-market, reduced site disturbance, lower material waste, and environmental benefits, aligning the business with green-building narratives and LEED-related advantages. From a competitive standpoint, SG Blocks operates in a fragmented market that includes modular builders, prefab manufacturers, and niche real estate/development players. Its differentiation rests on a blend of proprietary technology, fabrication know-how, sustainability positioning, and the ability to tailor modules to multiple end markets. The company has also highlighted ICC-ES recognition for its structural building materials, which it believes supports code compliance and regulatory acceptance. Even so, the business remains exposed to execution risk, project timing, input costs, and the ability to convert its pipeline into repeatable revenue. Recent developments suggest a company still in transition. In 2025, an SEC filing disclosed a listing-related issue involving failure to satisfy a continued listing standard, which is an important signal for equity investors. The 2024 annual report, filed in 2025, shows ongoing construction-services revenue and a continuing emphasis on modular production capacity and industrial assets. For investors in France, Belgium, and Switzerland, SG Blocks is therefore best viewed as a highly speculative NASDAQ-listed U.S. construction-tech name with a sustainability angle, niche market exposure, and elevated financial and market risk.