What happened

Shares of Unilever (NYSE:UL) were up 12.1% as of 11:45 a.m. EST Friday after Kraft Heinz (NASDAQ:KHC) offered to acquire the multinational consumer goods company.

So what

Kraft offered to buy Unilever in a cash and stock deal worth roughly $50.00 per share -- or more specifically, $30.23 per share in cash, and 0.222 Kraft Heinz shares for each existing Unilever share. That offer valued Unilever at a total equity value of roughly $143 billion, and represented an 18% premium to Unilever's closing price on Thursday.

This morning, however, Unilever issued a statement (opens PDF) insisting Kraft's initial offer "fundamentally undervalues Unilever." As such, the company rejected Kraft's proposal "as it sees no merit, either financial or strategic, for Unilever's shareholders, [and] does not see the basis for any further discussions."

Sign with Unilever logo

Image source: Unilever.

Now what

Nonetheless, Kraft Heinz has already acknowledged its offer has been declined, but hinted that it looks forward to "working to reach agreement on the terms of a transaction."

From an investor's perspective, such a deal would provide obvious synergies of scale, combining Unilever's enviable stable of brands from Dove to Lipton, Hellmann's, Korr, Vaseline, and Axe (to name only a few) with Kraft Heinz's equally monstrous product portfolio including not only its namesake products, but also Oscar Meyer, Classico, Velveeta, Kool-Aid, Jell-O, Planters, and Grey Poupon, and dozens of others.

But while it seems clear Kraft Heinz is ready to negotiate, it remains to be seen whether Unilever will be receptive to a sweetened offer. For now, investors in both companies will need to hurry up and wait for more details on this potential megamerger.

Steve Symington has no position in any stocks mentioned. The Motley Fool recommends Unilever. The Motley Fool has a disclosure policy.