What Tronox Holdings plc told the SEC could break it.

Tronox's results swing with TiO2 and zircon selling prices and with the cost of feedstock and energy inputs — natural gas, pet coke and electricity (notably rising South African electricity costs); in 2025 net sales fell 6% and gross margin dropped to 9.3% (from 16.8%) primarily on lower TiO2/zircon prices and higher production and freight costs.

“The decrease in gross margin is primarily due to: the unfavorable impact of 4 points due to a decrease in TiO 2 and Zircon selling prices, the unfavorable impact of 3 points due to higher production costs and freight costs”

Tronox's ten largest third-party customers represented 36% of consolidated net sales in 2025 (37% in 2024, 39% in 2023), though no single customer reached 10%; the aggregate concentration among its ~1,200 TiO2 customers means a coatings-industry downturn or loss of several large accounts would still meaningfully pressure revenue. (Group total, no named ≥10% customer, so recorded as concentration risk rather than a named edge.)

“During 2025, 2024 and 2023 our ten largest third-party customers represented 36 %, 37 %, and 39 %, respectively, of our consolidated net sales. During 2025, 2024, and 2023, no single customer accounted for 10 % of our consolidated net sales.”

Tronox operates mines and seven pigment plants across the U.S., Australia, Brazil, UK, France, South Africa and Saudi Arabia, exposing it to sovereign risk, trade restrictions, and rising South African electricity costs; in response to weak demand it shut the Botlek plant (Netherlands), idled the Fuzhou plant (China) and idled a Namakwa smelter furnace (South Africa), underscoring operational/geographic concentration risk.

“shutting down the Botlek pigment plant in the Netherlands, idling the Fuzhou pigment plant in China, and temporarily idling one furnace at the Namakwa smelter.”

Tronox swung to a loss-making year — income from operations fell $472 million (216%) to a $253 million figure driven by lower TiO2/zircon volumes and prices plus $232 million of restructuring and other charges — while interest expense rose $22 million; its ability to service debt, fund capex and continue operations depends on generating positive cash flow, and it is exposed to interest-rate risk on floating-rate facilities.

“decreased by $472 million or 216% compared to income from operations of $219 million for the same period in 2024 which is primarily attributable to lower sales volumes and lower average selling prices of both TiO 2 and zircon as well as restructuring and other charges of $232 million”

Tronox benefits from U.S. anti-dumping duties and Section 301 duties (currently 25%) on Chinese-origin TiO2 that constrain low-priced Chinese imports; these duties are subject to periodic review, legal challenge and executive modification, and if revoked or reduced — or if other countries (Brazil, KSA) protect domestic producers or China expands zircon exports — Tronox's results and competitive position could be materially harmed.

“If these anti-dumping duties and tariffs were to be revoked or reduced in the future, or if they do not adequately combat China's unfair trade practices, our results of operations and financial position could be adversely impacted.”