en.wikipedia.org/wiki/Carlos_Slim

The claim says Carlos Slim Helú is the CEO of Telmex, América Móvil, and Grupo Carso. Official company materials contradict that.

• Grupo Carso identifies Carlos Slim Helú as its "Fundador y Presidente honorario vitalicio" (founder and honorary life chairman), not CEO. The same page lists Carlos Slim Domit as "Presidente - Grupo Carso".
• Telmex lists Carlos Slim Domit as "Presidente" of the board and Héctor Slim Seade as "Director General Telmex" (CEO/general director).
• América Móvil identifies Carlos Slim Domit as "Chairman of the Board" and its management page lists Héctor Slim Seade as Chief Executive Officer.

So the article's wording is inaccurate: Carlos Slim Helú is not the current CEO of Telmex, América Móvil, or Grupo Carso according to the companies' own governance and leadership pages.

The article describes CICSA as a "non-profit" construction and engineering firm. That is incorrect.

Official company information says Carso Infraestructura y Construcción (CICSA) is part of Grupo Carso and specializes in developing projects in strategic sectors such as water, buildings, hydrocarbons and energy, industry, infrastructure, and telecommunications. Its own company description says it works "a fin de asegurar resultados rentables"—that is, to ensure profitable results.

Grupo Carso's annual report likewise treats CICSA as a normal operating business segment, reporting its contribution to revenues and contribution to operating income and describing the services it provides to public and private clients. Those are characteristics of a for-profit operating subsidiary, not a nonprofit organization.

The article says IDEAL is "primarily engaged in not-for-profit infrastructure development." Official IDEAL materials contradict that.

On its own About us page, IDEAL says "The company carries out the design, development, financing and harnessing of the different infrastructure projects, as well as to maintain, for a long term, the management and operation of the concessions in which they participate." That is the description of a commercial infrastructure operator, not a nonprofit.

IDEAL's annual report likewise identifies it as "a leading company in the infrastructure sector in Mexico" whose main activity consists of obtaining concessions and long-term contracts for the design, development, exploitation, and operation of infrastructure projects such as toll highways, water treatment plants, and terminals. A publicly traded company obtaining concessions and long-term contracts is not a not-for-profit entity.

The article calls Slim's New York Times holdings "non-voting shares." SEC filings from The New York Times Company contradict that.

The company's proxy materials state that it has "two classes of outstanding voting securities: Class A common stock ... and Class B common stock." More recent SEC filings also explain that Class A Common Stock has limited voting rights, including the right to elect 30% of the Board of Directors and to vote with Class B holders on certain other matters.

Separate SEC filings about Slim's ownership identify his holdings as Class A Common Stock. So while Slim's shares had limited voting power, they were not non-voting shares.