SCHEDULE 13D/A

LSB INDUSTRIES INC

Common Stock, Par Value $.10 Per Share · CUSIP: 502160104

Event date: 2025-12-19

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• ROBOTTI ROBERTReported CIK 0001105838

  Shares: 3,528,347 · Class: 4.9%

• Robotti & Company, Incorporated

  Shares: 3,515,347 · Class: 4.9%

• Robotti & Company Advisors, LLC

  Shares: 3,502,093 · Class: 4.9%

• Robotti Securities, LLC

  Shares: 13,254 · Class: 0%

• Suzanne Robotti

  Shares: 13,000 · Class: 0%

• Ravenswood Management Company, LLC

  Shares: 2,580,649 · Class: 3.6%

• The Ravenswood Investment Company L.P.

  Shares: 1,497,508 · Class: 2.1%

• Ravenswood Investments III, L.P.

  Shares: 1,083,141 · Class: 1.5%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.