Possesives: FCC's officers or FCC officers

[Lucero]

Which one is correct or are they both?

FCC's officers or FCC officers

Telmex's shares or Telmex shares?

Please someone help us quickly!!!!

[Yankee]

Hi Lucero

Context might influence my choice of one or the other. However, without any context, I would say that FCC officers and Telmex shares would be the most likely choices.
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[Molly]

Telmex' shares
FCC officers/First Christian Church's officers

IMO

[Lucero]

Dear Amy,

Thank you so very much for your quick reply.
This is on a legal letter a lawyer is writing...would that make a difference ?

Best regards,

Lucero

[Yankee]

Hi Lucero

I would need to see the entire sentence(s) in order to decide if the possessive form(s) might be more appropriate.
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