It looks like WFC started their purchasing of GRZ in Sept09. Here is what I got from the 13D's filed and what they purchased at. It seems they did a bit of either buying the stock up or they were just chasing the market.

Sept09 - 7% ownership and bought $.81-$1.05

Oct09 - 12% ownership and bought at $.90

Nov09 - 13% ownership and bought $1.11-$1.37

Jan10 - 14.4% ownership and bought $1.25-$1.55

Feb10 - 15..4% ownership and bought $1.29-$1.41

Mar10 - 16.5% ownership and bought $.97-$1.15

Apr10 - 17.6% ownership and bought $1.03-$1.21

Jun10 - 19.12% ownership and bought $.82-.$.89

And now today a new holding in KRY of 5.2%, this filing is different than GRZ's in that they don't list the purchase dates nor the price accumulated at as they have been doing in the GRZ filings.