Are we talking about cases where someone at the company explicitly asked/ordered a kill, or including *wink* "handlings" of people? For example in 2012 the (EU) ECCHR said Nestle was responsible for the 2005 death of Luciano Romero in 2005. What about when in the case of the Banana Massacre you had Chiquita Banana making payments to the United Self-Defense Forces of Colombia, who caused the deaths?
Looking at Nestle's historic stock performance I see no (significant) change around 2005 or 2012.
[0] - https://www.dw.com/en/nestle-under-fire-over-colombian-murde...