In reply to Rhys.

Because each profile already has a "Company" field available, it didn't seem urgent to add a "sponsored by XYZ company" field to the profile, though I agree with Jeff that it will help with transparency. I commented on the original post that:

I hope to post a proposal for next steps for the Five for the Future pledge program in mid-July, which will include a way to indicate the company sponsoring the contributor’s work that can be confirmed by a company representative (as long as that company has filled out a pledge). I don’t think we’ll need to require a Five for the Future pledge in order to name the sponsoring company, though — it should be possible to indicate via design elements if the cited company is part of the pledge program or not.