** TPG Inc's TPG.O shares down 4.7% in extended trading to $47.55 on secondary offering news
** Private equity firm says DB Holdings, vehicle for benefit of the estate of David Bonderman, to offload 21 mln shares
** JP Morgan sole underwriter for offering
** Co has ~363 total shares outstanding for ~$18 bln market cap
** Shares on Tues closed down 1.8% at $49.90, down ~21% YTD
** TPG, founded in 1992 by the late David Bonderman and James Coulter, went public in Jan 2022 IPO at $29.50
(Lance Tupper is a Reuters market analyst. The views expressed are his own)
((lance.tupper@tr.com 1-646-279-6380))