  We report the discovery of planetary companions orbiting four low-luminosity
giant stars with M$_\star$ between 1.04 and 1.39 M$_\odot$. All four host stars
have been independently observed by the EXoPlanets aRound Evolved StarS
(EXPRESS) program and the Pan-Pacific Planet Search (PPPS). The companion
signals were revealed by multi-epoch precision radial velocities obtained
during nearly a decade. The planetary companions exhibit orbital periods
between $\sim$ 1.2 and 7.1 years, minimum masses of m$_{\rm p}$sini $\sim$
1.8-3.7 M$_{jup}$ and eccentricities between 0.08 and 0.42. Including these
four new systems, we have detected planetary companions to 11 out of the 37
giant stars that are common targets between the EXPRESS and PPPS. After
excluding four compact binaries from the common sample, we obtained a fraction
of giant planets (m$_{\rm p} \gtrsim$ 1-2 M$\_{jup}$) orbiting within 5 AU from
their parent star of $f = 33.3^{+9.0}_{-7.1} \%$. This fraction is
significantly higher than that previously reported in the literature by
different radial velocity surveys. Similarly, planet formation models under
predict the fraction of gas giant around stars more massive than the Sun.
