The announcement of a common share offering typically dilutes existing shareholders' equity, which can lead to a negative short-term impact on the stock price. However, the lack of details on the offering size makes it difficult to predict the exact impact, hence the score is -1 with a high relevance due to the direct involvement of the company. The importance is set at 75, considering that share offerings are significant events but without size details, the full importance cannot be assessed. The confidence level is at 90, acknowledging the general market reaction to such filings while allowing for uncertainty due to missing details.