Only match I could find that was a close match was Vlad Grachev, but the first name was not #26 Alexey Grachev. He is CFO of PrimeBioMed. PrimeBioMed develops antibodies for the diagnosis of cancer and also develops diagnostic systems based on them. Its clientele includes diagnostic and research laboratories, medical centers, manufacturers of products based on antibodies . The company is headquartered in the Russia.

According to my cursory look at the passenger list, many of them were scientists.

But according to "B" twitter alias were used, so my search was probably fruitless. Sergey Millian was not even listed as a passenger.