Stockholders' equity

3 Months Ended

Mar. 31, 2026

Stockholders' equity

Stockholders' equity

Note 13 – Stockholders’ equity:

Accumulated other comprehensive loss - Changes in accumulated other comprehensive loss attributable to NL stockholders, including amounts resulting from our investment in Kronos Worldwide (see Note 6), are presented in the table below.

	Three months ended
	March 31,
	2025		2026
	(In thousands)
Accumulated other comprehensive loss, (net of tax and noncontrolling interest):
Currency translation:
Balance at beginning of period	$	(185,423)	$	(177,512)
Other comprehensive income		4,185		1,015
Balance at end of period	$	(181,238)	$	(176,497)
Defined benefit pension plans:
Balance at beginning of period	$	(36,666)	$	(17,359)
Other comprehensive income -
Amortization of prior service cost and net losses included in net periodic pension cost		317		86
Balance at end of period	$	(36,349)	$	(17,273)
OPEB plans:
Balance at beginning of period	$	(1,267)	$	(1,196)
Other comprehensive loss -
Amortization of net gain included in net periodic OPEB cost		(33)		1
Balance at end of period	$	(1,300)	$	(1,195)
Total accumulated other comprehensive loss:
Balance at beginning of period	$	(223,356)	$	(196,067)
Other comprehensive income		4,469		1,102
Balance at end of period	$	(218,887)	$	(194,965)