  We briefly discuss a possible cosmological implication of the observed binary
black hole mergings detected by LIGO-Virgo-Kagra collaboration (GWTC-3
catalogue) for the primordial black hole (PBH) formation in the early Universe.
We show that the bumpy chirp mass distribution of the LVK BH+BH binaries can be
fit with two distinct and almost equal populations: (1) astrophysical mergings
from BH+BH formed in the modern Universe from evolution of massive binaries and
(2) mergings of binary PBHs with initial log-normal mass distribution. We find
that the PBH central mass ($M_c\simeq 30 M_\odot$) and distribution width
derived from the observed LVK chirp masses are almost insensitive to the
assumed double PBH formation model. To comply with the observed LVK BH+BH
merging rate, the CDM PBH mass fraction should be $f_{pbh}\sim 10^{-3}$ but can
be higher if PBH clustering is taken into account.
