Mosaic ATS, LLC has submitted a correcting amendment to its previous SEC filing, which is crucial for maintaining regulatory compliance and operational clarity. The amendment addresses inaccuracies in earlier disclosures and details the operational framework of the alternative trading system (ATS). This update is particularly important as it reflects the company's commitment to transparency and adherence to regulatory standards.

The filing, dated November 2, 2026, serves to correct several items in the previous submission. Notably, it clarifies that Mosaic ATS does not conduct trading outside of its regular hours and specifies that 'Firm Up' orders must be sent with a time-in-force of DAY. Additionally, it corrects citations related to FINRA rules and updates the list of exchanges utilized by the ATS.

Background

Mosaic ATS, LLC operates as an alternative trading system, registered under the SEC Act of 1934. The company is incorporated in Delaware and maintains its business address at 875 Washington Street, New York, NY. The ATS is designed to facilitate trading for U.S.-registered broker-dealers, providing a platform for executing trades while ensuring compliance with regulatory requirements.

Recent filings indicate that Mosaic ATS is actively engaged in maintaining its operational standards, with the latest submission being an ATS-N/CA form. Previous filings include an ATS-N/UA form dated March 26, 2026. The company is part of a competitive landscape that includes other trading technology providers and broker-dealers.

What the Filing Says

The correcting amendment outlines specific changes made to the previous filing, stating, "This Correcting Amendment amends Part II, Item 6(b) and Part III, Items 7(a), 9(a), 11(c), and 23(a)." The filing emphasizes that these corrections are necessary for accurate representation of the ATS's operational capabilities and compliance with regulatory standards.

Impact

This amendment may affect various stakeholders, including subscribers to the Mosaic ATS, regulatory bodies, and technology vendors. The filing mentions several partners, including Instinet, which provides clearance and settlement services, and Nasdaq, which offers trade reporting facilities. These relationships highlight the interconnected nature of trading systems and the importance of compliance in maintaining operational integrity.

What's Next

The filing does not specify what happens next. However, the emphasis on compliance and operational clarity suggests that Mosaic ATS will continue to monitor and update its disclosures as necessary to align with regulatory expectations.