It is one of the so-called private investment in public equity, or PIPE, transactions regulators have been examining for illegal trading activity.

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Reportedly, Yang wants to structure a PIPE (private investment in public equity) deal that would allow the discounted sale of up to 19.9% of Yahoo!

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The chief executive of mamma.com had gone to Cuban with details of a private investment in public equity deal, which is a way for companies to raise capital.

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And the odds for India startups to fly high are slimmer now that one of the most experienced venture teams in India is shifting to PIPE (private investment in public equity) deals.

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Evercore Partners analyst Ken Sena reduced his rating on Yahoo to Equal Weight from Overweight, despite the potential acquisition of the company, based on his concern about the possibility that the company will choose to do a PIPE (Private Investment in Public Equity) deal.

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