This was a straight cash purchase of your 100 shares and there is absolutely no reason I can see that would make this transaction a bit different, from a tax perspective, than any other sale of your stock for cash. That is I believe you may simply report this sale in the usual fashion, indicating proceeds of $2,100, a basis of $3,895.95 and a loss of $1,795.95.
The "Definitive proxy statement relating to merger or acquisition" issued 6/27/2016 said as much (emphasis added):
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Treatment of Holders of Common Stock who are U.S. Persons
The receipt of cash pursuant to the merger will be a taxable transaction to U.S. persons. Generally, this means that a Company shareholder that is a U.S. person will recognize capital gain or loss equal to the difference between (1) the amount of cash the shareholder receives in the merger and (2) the shareholder’s adjusted tax basis in the common stock surrendered therefor. This gain or loss will be long-term if the holder has held the Company’s common stock for more than one year as of the date of the merger. Any long-term capital gain recognized by a non-corporate Company shareholder (including an individual) that is a U.S. person will generally be eligible for a reduced rate of U.S. federal income taxation. The deductibility of capital losses is subject to limitations. If a U.S. person acquired different blocks of Company common stock at different times or at different prices, such U.S. person must determine its tax basis, holding period, and gain or loss separately with respect to each block of Company common stock.
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I'd love to see that 1099-B to see what you're missing or I'm missing, or maybe you need to pick up the phone and talk to the broker to see what's being communicated here, (and I'd love to hear the results of that conversation), but at this point I'd say you have a deductible loss.
Tom Young
