Bert Hochfield's holdings

Does anyone know how to find out what Bert’s current holdings are?

He did a deep dive in a company I’m interested in, Veeva, and disclosed at that time (June 2016) that he might initiate a position in it in the following 72 hours. How can I find out whether he did buy shares?

To be clear, my intent is not to buy shares only if Bert bought some; I’m just interested in knowing.

Thanks.