Activity Companies Alerts About

Adam D. Portnoy owns 2.25% of RMR Group

723,126 shares as of the September 17, 2026 filing, worth $13.2M at the latest close.

RMR · $588M market cap · Founder-led
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Free.
The stake
2.25%
worth $13.2M at the latest close
Stake rank
#1,533
by dollar value of the stake
Last sale
None
no sales since 2016
Last buy
None
no purchases since 2016

Adam D. Portnoy owns 2.25% of RMR GROUP INC.: 723,126 of 32,080,226 shares, worth about $13.2M at the 2026-10-16 close. The stake has moved from 1.80% in 2016 to 2.25% on 2026-09-17.

How the stake is held

each class as its filings last stated it
SHARES
OF THE STAKE
CLASS B · stated Nov 16, 2015 · Form 4 ↗
450,000
62.2%
HELD INDIRECTLY · By Trust · last stated Nov 2015
450,000
62.2%
CLASS A · stated Sep 17, 2026 · Form 4 ↗
273,126
37.8%
HELD DIRECTLY
182,562
25.2%
HELD INDIRECTLY · By Trust
90,564
12.5%
THE STAKE
723,126
2.25%