One thing's for sure. Drops in sales aren't being attributed to Ms. Rometty. Massive, prolonged drops. Worse than for her predecessor.
September 2012 IBM stock 205.5
September 2013 IBM stock 192.75
September 2014 IBM stock 190
September 2015 IBM stock 145
March 2015 IBM stock 140
If the CEO pay logic even remotely applied this woman would never be employed by anyone again. I'd rather hire a pyromaniac that did 100 million dollar in fire damage to his last employer : it'd be far, far cheaper.
Since she led IBM the stock has lost 11% of it's value every year, but it's not an average : the loss has accelerated over time. For her fifth year she's on track to have IBM stock lose 37% of it's value (trendline Sep 2015 to today, then see where that trendline is on Sep 2016. Where will it be ? 92 dollars). In absolute value, IBM shareholders have lost 62.4 billion dollars, about 1/3 of the total market cap.
If you're right, and the CEO is responsible for this ... Just wondering: I'm not the CEO. Suppose I do something that loses my company 46% of it's total stock price, damage sufficient assets to cause 60 billion dollars in damage. What will happen to me ? 16 million dollars extra pay ? Or something else ...