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CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
CONDENSED CONSOLIDATED STATEMENTS OF INCOME |  |  |  |
Net sales | $ 40,366 | $ 35,887 | $ 80,638 | $ 73,858
Cost of sales | 27,476 | 24,722 | 55,585 | 53,026
Gross margin | 12,890 | 11,165 | 25,053 | 20,832
Selling, general and administrative expense | 6,570 | 6,084 | 12,864 | 12,036
Corporate expense | 3,519 | 4,290 | 6,240 | 6,649
Income from operations | 2,801 | 791 | 5,949 | 2,147
Equity in earnings (losses) of Kronos Worldwide, Inc. | (2,811) | 5,973 | 2,714 | 8,449
Other income (expense): |  |  |  |
Interest and dividend income | 1,504 | 2,678 | 3,542 | 5,229
Marketable equity securities | (108) | 779 | (8,659) | 3,162
Other components of net periodic pension and OPEB cost | (285) | (318) | (570) | (636)
Interest expense | (90) | (148) | (666) | (293)
Income before income taxes | 1,011 | 9,755 | 2,310 | 18,058
Income tax expense (benefit) | (43) | 1,302 | (66) | 2,290
Net income | 1,054 | 8,453 | 2,376 | 15,768
Noncontrolling interest in net income of subsidiary | 699 | 618 | 1,354 | 1,094
Net income attributable to NL stockholders | $ 355 | $ 7,835 | $ 1,022 | $ 14,674
Amounts attributable to NL stockholders: |  |  |  |
Net income per basic share | $ 0.01 | $ 0.16 | $ 0.02 | $ 0.30
Net income per diluted share | $ 0.01 | $ 0.16 | $ 0.02 | $ 0.30
Weighted average shares outstanding - basic | 48,855 | 48,841 | 48,852 | 48,837
Weighted average shares outstanding - diluted | 48,855 | 48,841 | 48,852 | 48,837

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