Is it possible to see a reporting about donations/grants/whatsoever and how they use money? Or these numbers are not public?
It's not polemic, only curiosity

Ok, i do a little research by myself and i find:

In June 2014 the IPD established its Translational Research Center, which is operated with a $1.4 million Opportunity Grant from the Life Sciences Discovery Fund (LSDF). The LSDF funding to the IPD was matched 4-fold by generous contributions from private donors ($3.2 M), UW ($1.4 M), and the Washington Research Foundation ($1 M).
Dr. Pultz was recently awarded a competitive $250K proof of concept matching grant from the LSDF to conduct animal efficacy studies and safety testing of the lead KumaMax variant, an effort which is being matched by an additional $176K in philanthropic donor funding.
In the last update, we mentioned that Governor Jay Inslee’s 2014 Supplemental Budget (4-13-13) included $1 million to support the IPD mission, enabling the UW to recruit a talented computational biologist, Dr. Frank DiMaio
This January, the IPD was awarded $12M in funding by the Bill & Melinda Gates Foundation to support vaccine research.
May 15, 2014. With a very generous $8 M gift from the Washington Research Foundation (WRF), the IPD has launched the WRF-IPD Innovation Fellows Program supporting research partnerships between the IPD and other Seattle-area research institutes or UW departments

Yeap, my 20 dollars are very important.

While those numbers might seem impressive, there's no indication of how many of those donations are earmarked directly to the Rosetta@Home program fund. At the same time, $28.426M is still very much a shoestring budget in the bioinformatics world and the things people are stomping their feet for on these forums may not make the cut in terms of priorities when slicing up this particular pie; All said, the fact remains that your $20 donation may be the loudest voice you have in advocating for something like a server upgrade, etc.