On Aug 21, 堀越 裕史 and related parties submitted the Change Report to Ministry of Finance. The report shows that 堀越 裕史 and related parties increased their holdings in $Marubun (7537.JP)$, with their joint shareholding ratio up from 5.59% to 6.32%.
Source: Edinet Announcement
What is the 5% shareholding reporting system?
Shareholders with holding ratio exceeding 5% must submit a Large Shareholding Report within five business days from that day. If the holding ratio increases or decreases by 1% or more after submitting a Large Shareholding Report, the holder must submit a Change Report within five business days from that day.